Detailed Programme Booklet

Monday 6th

09:00 – 10:00 Plenary Lecture

Multiscale Modelling of Damage and Failure in

Woven Composite and Ceramic Materials: Finite,

Boundary and Meshless Methods

M. H. Aliabadi

10:30 – 19:00 Lectures

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16

10:30-10:50

10:50-11:10

11:10-11:30

11:30-11:50

Yellow RoomWeldings

Chair: F. Balle

Effect of Residual Stress on FractureParameters of through Cracks in WeldedPlatesR. SeifiStress intensity factor and J-integral are path dependentparameters due to existing residual stress. We used themodified relations to take into account the effects of theresidual stress and to remain path independent. Resultshave good agreement with data from weight function methodfor cracked butt weld specimens.(2852)

On the residual stresses in multi-passwelds: coupling of welding simulationand fatigue analysisA. Krasovskyy, S. SöNnichsen, D. BachmannThis paper presents a fatigue assessment for multi-passwelds based on the on the simulation of a welding process,a post-weld heat treatment (PWHT) and a cyclic loading.Welding induced residual stresses and the information aboutthe material state can then be used in the fatigueanalysis.This approach was able to predict the differentcrack initiation for specimens with and without PWHT.(2859)

Estimating the fatigue behaviour ofwelded jointsM.D. Chapetti, L. F. Jaureguizahar(2861)

Fatigue Properties of Spot Welded andSpot Weld-Bonded Joints of Steel SheetT. Fujii et al.Fatigue tests are carried out on spot welded and spot weld-bonded joints. The fatigue strength of the spot weld-bondedjoints is higher than that of the spot welded joints. Thefatigue strength is improved because the stressconcentration of the nugget edge is considerably reduced inlarge part of fatigue life.(2907)

Orange RoomLight Alloys 1

Chair: H. Jahed

Effect of Film Elastic Modulus onFatigue Behaviour of DLC-Coated WroughtMagnesium Alloy AZ61T. Kakiuichi et al.Plane bending fatigue tests and FEM stress analysis wereconducted using DLC-coated magnesium alloy AZ61 with twodifferent kinds of film elastic modulus and the effect offilm elastic modulus on fatigue behaviour is clarified.(2986)

Investigations into stress corrosioncracking behaviour of AZ91D magnesiumalloy in physiological environmentL.Choudhary et al.Stress corrosion cracking (SCC) susceptibility of AZ91Dmagnesium alloy was established using slow strain ratetesting (SSRT) in physiological environment and air atdifferent strain rates. Fracture surfaces of testedspecimens were analysed using scanning electron microscopy(SEM) in order to examine the features of SCC. The alloywas found to be susceptible to SCC.(3017)

Effect of Soft Surface Layer on FatigueStrength of Age-Hardened Al-Cu AlloyT.Kanadani et al.Fatigue strength of Al-Cu alloy was examined by a repeatedtensile mode when the specimens were aged and reversionannealed. The existence of soft surface layer was thoughtto increase the fatigue strength, at least in the repeatedtensile mode of the aged Al-Cu alloy as well as Al-Znalloy.(3052)

Characteristic of threshold stressintensity factor range for small crackon magnesium alloysT.Ishina et al.In order to evaluate the threshold stress intensity factorrange for magnesium alloys with a small crack, rotatingbending fatigue tests were carried out. In addition, aprediction expression was proposed by modifying Murakami'sprediction expression which can predict the thresholdstress intensity factor range by applying the HV and aninitial crack size.(3101)

Red RoomFracture Mechanics

Chair: M. Ayatollahi

A Micromechanics-Based Fatigue DamageProcess ZoneG.M. Owolabi, L. Shi, H. A. WhitworthIn this paper, a new nonlocal fatigue damge process zonebased on the distribution of fatigue indicator parametersis proposed and used along with a probabilisticmeosmechanics approach to obtain a new microstructure-sensitive fatigue notch sensitivity index, therebyextending notch sensitivity to explicitly incorporatemicrostructure sensitivity and attendant size effects viaprobabilistic arguments.(2657)

Dynamic fracture of piezoelectric solidswith defectsR. Mueller et al.The main aim is to develop, validate and apply in intensivesimulations a BIEM for solution of dynamic fractureproblems for piezoelectric solids with defects like cracksand holes. The modelling approach is in the frame ofcontinuum mechanics, wave propagation theory and linearfracture mechanics.(2799)

Influence of heat treatment on thefracture toughness and crack propagationin 5% Cr martensitic steelI.Souki, D.Delagnes, P.LoursFracture toughness and fatigue crack propagation arestudied for various heat treatments. It is shown thatchanging the austenitizing temperature, i.e. the grain sizeand primary carbides, does not change the fracturecharacteristics. However, modifications of tempering,impacting the alloy hardness, result in drastic changes oftoughness and crack propagation.(3904)

A Hybrid Approach To Determine DuctileFracture ResistanceX. Qian, W. YangThis article describes a hybrid approach to determine theJ-R curve for for metallic fracture specimens. This methodcomputes the P-LLD curves from multiple finite element (FE)models, each with a different crack depth. The experimentalprocedure measures the P-LLD curve from a fracture specimenwith a growing crack.The validation procedure shows veryaccurate prediction of the J-R curve for SE(B) specimen.(2890)

Green RoomModeling and simulation

Chair: M. Madia

Micromechanical and phenomenologicalapproaches of the sheet folding processM. Almansba, M. Ould Ouali, N. E. Hannachiwe present a comparison of predictions of two damage modelsapplied to metal forming. The first one is the Saanouni'smodel developed in the framework of phenomenologicalapproach of damage mechanics. The second model in the GTN(Gurson-Tveergaard-Needleman) law describing the threemicromechanisms of ductile fracture: nucleation, growth andcoalescence of cavities. These two models have beenimplemented in code Abaqus using the VUmat(4054)

Elastic-Plastic FEM Investigation ofThickness Effect on Fatigue Crack GrowthA. Materna, V. OlivaA 3D elastic-plastic FEM model for prediction of planarfatigue crack growth is presented. A local crack frontadvance is modelled by the successive release of finiteelement mesh nodes in the plane of propagation. The releaseof the nodes is controlled by the value of the Smith-Watson-Topper fatigue damage parameter. The effect of thethickness on the fatigue crack front shape is investigated.(3141)

Analysis of Defects in ViscoelasticSolids by a Transformed Boundary ElementMethodC. Hwu, Y. C. ChenThrough the use of correspondence principle, theviscoelastic solids can be effectively treated in Laplacedomain. To take advantage of the available fundamentalsolutions for the defects in anisotropic elastic materials,a transformed BEM is developed to treat problems ofviscoelastic solids containing defects such as holes,cracks, or inclusions.(2966)

Approximation of mean stress relaxationby numerical simulation using the Jiangmodel and extrapolation of resultsV. Landersheim, T. Bruder, H. HanselkaIn this paper an approach combining mean stress relaxationanalyses using Jiang’s material model with simpleextrapolation functions is presented. According to thisapproach only the first loading cycles are simulatedthrough elastic-plastic FE analyses. The result of thissimulation is extrapolated using equations according towell-chosen empirical estimation methods.(3083)

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Light Blue RoomNew perspectives in numerical modelingof mechanical behavior of materials 1(organized by S. Forest)

Chair: S. Forest

Influence of local friction coefficientand strain hardening on the scratchresistance of polymeric surfacesinvestigated by finite element modelingH. Pelletier, J. Krier, C. Gauthier(3746)

Efficient Dynamic Simulation Based onCross Section of Elastic ObjectK. SugaThe present study proposes an efficient dynamic simulationmethod for elastic objects using finite element method. Anobject is discretized into characteristic finite elementsand derives a recurrence formula for unknown vector, andthen solves the formula efficiently. Dynamic simulationsfor the Hopkinson bar test for anisotropic materials arepresented.(3021)

Equivalent Young’s Modulus of theSpiral Accumulating Motor Core IncludingMany Slits and Embossing InterlockingsN.-A. Noda, Y. Takase, H. TakadaIn this study, equivalent Young’s modulus of spiralaccumulating core used for permanent magnet motor isdiscussed by the application of the FEM. The convenientmethod of calculation based on the rule of mixture is newlyproposed to estimate the Young’s modulus of the realspiral accumulating core efficiently.(3096)

Material model proposal forbiodegradable materialsA. C. Vieira et al.(3170)

Navy Blue RoomCyclic stress-strain response andfatigue fracture of materials (organizedby J. Polak and Y. Murakami)

Chair: J. Polak

Collapse of a coal loadout structurefrom fatigue caused by wind-inducedvibrationI. Le MayA coal loading stage collapsed without warning after oneyear of use. The paper describes the investigation whichled to the conclusion that failure was due to fatigue thathad not been foreseen and occurred under specific windconditions.(2844)

Change of stress-strain hysteresis loopand its links with microstructuralevolution of AISI 316L stainless steelduring cyclic loadingM.-S. Pham, S. R. HoldsworthAISI 316L steel exhibits cyclic hardening and softening,followed by a stable stress response, as a consequence ofstrain-controlled LCF loading at room temperature. Theaccompanying changes in dislocation density, distributionand substructure are responsible for changes to elasticmoduli, loop shape parameter, effective stress and backstress.(2877)

Fatigue behavior and phasetransformation in austenitic steels inthe temperature range -60°C = T = 25°CM. Smaga, D. EiflerFatigue behavior and phase transformation in the metastableaustenitic steels AISI 304, 321 and 348 were investigatedin the temperature range from -60°C to 25°C by means ofstress-strain hysteresis, electrical resistance andmagnetic measurements. The steels show differences inaustenite stability, which lead to significant changes indeformation induced martensite formation and fatiguebehavior.(2878)

Fatigue of Zr-based bulk metallic glassunder cyclic-torsionY. Nakai, K. Nakagawa, K. MikamiFor cyclic torsion of specimens with rectangular cross-section, crack initiation site must be determined by theratio of specimen width to specimen thickness, and fatiguestrength of metallic glass depends on the ratio.Therefore, the criteria for fatigue limit under combinedstress should be constructed considering the crackinitiation site.(2860)

Violet RoomModels of behaviour of materials 1

Chair: K. Eberhard

Fatigue modeling of a notched geometryunder spectrum block loading supportedon elastoplastic FEAH. F.S. G. Pereira, A. M.P. De Jesus´This paper presents an assessment of variable amplitudedata, which has been derived by authors for a notchedgeometry made of P355NL1 steel, within the local approachesto fatigue and linear damage summation. Alternativepredictions based on both simplified Glinka’s analysisand elastoplastic (Chaboche’s model) finite elementanalyses are compared.(3463)

Wave response of the solids bymechanical loading: overall modelL.B.ZuevPlastic flow evolution was investigated for various metalsand alloys, which differed in chemical bond and crystallattice type (BCC/FCC/HCP), structural state (single-crystal/polycrystalline) and deformation mechanisms(dislocation glide/twinning). On the base of conclusiveevidence it is attempted to explain the phenomenon ofplastic flow localization by invoking a fundamentalprinciple of quantum mechanics.(2971)

The Analytical Solution of the ContactProblem for the Functionally GradedLayer of Complicate StructureI.S. Trubchik, L.N. Evich, B.I. MitrinThe contact problem for the layer is investigated for thecase when elastic properties of the medium are arbitrarycontinuously differentiable functions of its thickness.Effective numerical method is described for the kerneltransform construction for the dual integral equations thisproblem is reduced to. This method permits to obtain theproblem solution for the wide class of the inhomogeneitylaws.(3727)

Prediction of the Mechanical Propertiesof PE/PP Blends Using Artificial NeuralNetworksB. F. Yousef, A.-H. I. MouradThis paper investigates using Artificial Neural Networks topredict the tensile curves and mechanical properties ofpure polyethylene, pure propylene and their blends. Thestudy indicates that an ANN can simulate the effect of thepolymer blending ratio on the mechanical behavioraccurately and that ANN approach is an effective analyticaltool that can reduce cost and time.(3486)

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11:50-12:10

12:10-12:30

12:30-12:50

12:50-13:10

Yellow RoomWeldings

Chair: F. Balle

Effects of TIG Welding Parameters onMorphology and Mechanical Properties ofWelded Joint of Ni-base SuperalloyQ. Wang et al.(2920)

Crack growth study of dissimilar steels(Stainless - Structural) butt-weldedunions under cyclic loadsA. L. García-Fuentes et al.Mechanisms of emergence and propagation of fatigue crackscaused by mechanical tension stress fluctuations indissimilar steels butt-welded joints; (structural -stainless), through GMAW without pre and post thermaltreatment. Results showed proper mechanical steel behavior.Pre-cracked test evidence faster growth of crack in fusionline between structural and stainless.(2934)

Corrosion Fatigue Behavior of ResistanceSpot Welded Dissimilar Metal Weldsbetween Carbon Steel and AusteniticStainless Steel with Different ThicknessJamasri et al.Corrosion fatigue behavior of resistance spot-weldeddissimilar metals has been studied. The corrosion fatiguestrength in sea water is lower than that performed in theair. It seems that the hydrogen enhanced plasticity thattends to ease the generation of dislocations mechanism isthe cause of corrosion fatigue strength weakening.(2987)

Effect of Welding Methods on the Low-Cycle Fatigue Properties of Welded DP780SteelsJ.H. Lee et al.In this study, the effect of three different weldingmethods (MAG-, Laser- and TIG-welding) on the LCFproperties of HAZ in DP780 steels was investigated. LCFproperties of all welded materials were inferior to that ofbase material. Among those, MAG-welded specimen revealedthe worst fatigue life.(2990)


Chair: H. Jahed

Process metallurgy design for high-formability aluminum alloy sheet metalgeneration by using two-scale FEMH. Kuramae et al.We improved the formability of an aluminum alloy sheetmetal A6022 by process metallurgical approach. In thisstudy, multi-scale FE analyses of 2-stage asymmetricrolling process was applied in the sheet metal generation,and rolling parameters was optimized by using the discreteoptimization algorithm. The Lankford value of theoptimized sheet improved by comparison with commercialA6022-T43.(3102)

Cyclic behaviour and microstructuralstability of an ultrafine-grained Al-Mg-Si alloyK. Hockauf et al.The low-cycle fatigue behaviour of an Al-Mg-Si alloyprocessed by ECAP (in two as-processed conditions and heattreated for optimisation of ductility) is investigated,supplemented by scanning transmission electron microscopy(STEM) at characteristic stages of the fatigue process. Ourcontribution will provide an insight into the actingmechanisms during cyclic degradation of an ultrafine-grained material.(3122)

Hardening and softening in selectedmagnesium alloysZ. Trojanová, P.L. Luká(3136)

Microstructure evaluation andcrackinitiation crack for AZ31 sheet underbiaxial stressJ. G. Wang, D. Y. Ju, F. X. Yin(3259)


Chair: M. Ayatollahi

Stability of austenitic 316L steelagainst martensite formation duringcyclic strainingJ. Man et al.Solution-annealed 316L steel was fatigued with constantplastic strain amplitudes at room temperature and undervarious conditions at depressed temperatures to reveal itsstability against deformation-induced martensite formation.For quantitative analysis neutron diffraction and magneticinduction method were adopted; microstructural featureswere characterized by TEM, ECCI and EBSD techniques.(3100)

Measurement of Effective StressIntensity Factor Range of Mode IIFatigue Crack PropagationM.Liu, S. HamadaMode II crack propagation was carried out using a doublecantilever specimen. The friction between the crack facesis to be derived from the loading-strain curve obtainedfrom the strain gauges straddling the crack and theeffective Mode II stress intensity factor range will becalculated with numerical method in the future.(3121)

Grain Boundary Engineering for Controlof Fatigue Crack Propagation inAustenitic Stainless SteelS. Kobayashi et al.The roles of grain boundary microstructure in fatigue crackpropagation were investigated to evidence the utility ofgrain boundary engineering for controlling fatigue crackpropagation in austenitic stainless steel, paying attentionto the effects of grain boundary character distribution onthe path and the local propagation rate of fatigue crack.(3123)

A fracture mechanics approach to fatigueof heavily drawn steel wiresK. Lambrighs et al.High cycle fatigue failure in heavily drawn steel wires isinitiated by either surface defects or internal non-metallic inclusions. The SIF’s of the non-metallicinclusions were compared to the threshold value for longcrack growth. A bi-linear Paris law has been proposed,enabling to predict the fatigue life of heavily drawn steelwires containing any size of inclusions.(3922)


Chair: M. Madia

FE analysis of a Notched Bar UnderThermomechanical Fatigue Using a UnifiedViscoplasticity ModelD. W. J. Tanner, W. Sun, T. H. HydeZ-mat software is used to implement the multiaxial form ofthe Chaboche unified viscoplastic constitutive equationsinto the Abaqus finite element (FE) code. Complex transientstress fields within a grade P91 steel notched bar specimenare investigated in detail for different thermomechanicalfatigue (TMF) loading conditions.(2923)

Computationally Efficient Multiscale`Stack' Model of a PolycrystallineMaterialM. A. Kumar, S. Mahesh, P. VenkitanarayananThe efficient `stack' model of a rate-independent rigid-plastic poly-crystalline material is developed based onlinear programming technique with newly derived flow lawand consistency conditions. The model is applied to studythe effect of grain interactions in the macroscopic andmicroscopic responses of 1024-grains polycrystallineaggregate under tension and simple-shear deformation.(4578)

The influence of holes in the mechanicalproperties of EWT solar cellsJ. Barredo et al.This paper presents a study of the influence of the holesin the mechanical properties of mono-crystalline siliconwafers prepared for EWT back contact solar cells. FiniteElement models have been developed employing the sub-modeling technique to estimate the stress intensity factorand comparing results with those obtained through differenttests(3624)

Effective behavior of compositestructures made of thermoelasticconstituents with cylindricalperiodicityN. Charalambakis et al.In this paper, an extension of the asymptotic expansionhomogenization technique is proposed for predicting theeffective behavior of composites exhibiting periodicitywith respect to cylindrical coordinates. The compositesunder consideration are made of thermoelastic highlyheterogeneous constituents. One example of a two-directional fiber-reinforced polymer tube is presented todemostrate the use of the proposed methodology.(4529)

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12:30-12:50

12:50-13:10


Chair: S. Forest

Dispersion Curves Computation forWaveguides Buried in Infinite Space bySemi-Analytical Finite Element MethodZ. Lin, A. Kasai, Y. ItohWe present a method to compute dispersion curves of planewaves propagating in waveguides buried in infinite-space.The waveguide and surrounding are modeled separately byconventional finite elements in the field of complexnumbers and analytical interactions of bulk waves,respectively. We obtained the dispersion curves finallyfrom an eigenproblem.(3218)

In situ Atomic-Force MicroscopyApplication for Multiscale Modeling ofDeformation ProcessesV. V. LepovThe new multiscale evolution modeling approach for damageaccumulation and fracture processes is proved byexperimental results for steel on nanoscale. Parameters ofthe model estimated by atomic-force microscopy during thedeformation. The evolution in new approach means takinginto account the non-Marcovian processes on certainmicrostructure scales.(3235)

Generalized “grid” continuumdescription as a tool for proposingmulti-scale material modelsJ. Vychytil, M. HolecekWe propose a generalization of the classical continuumdescription in which a generally discontinuous or highlyoscillating field is attached to each continuum point.Illustrated on a two-scale hyperelastic material model, ourtheory provides for a non-trivial character of the overallmechanical response.(3327)

Towards a distribution-based formulationof FEM for micro-scale componentsJ. Lütjens et al.The down-scaling of components has revealed limitations ofthe classical finite element method (FEM) in the sub-millimeter domain. Micro-scale FEM simulations should usedistributed material parameters. Pre-calculation of asufficient number of load cases in representative volumeelements (RVE) for a material data base is proposed. Inthis study, characterizations of DC01 sheets and theirapplication to numerical simulations of bulge-tests arepresented.(3357)


Chair: J. Polak

Influence of Austenite Stability onPredicted Cyclic Stress-Strain Responseof Metastable Austenitic SteelsGr. R. Lehnhoff, K. O. FindleyA model for strain induced martensite formation duringcyclic loading that captures the strain amplitudedependence of the transformation kinetics while retainingphysical significance is proposed. The kinetic model isinput into a mechanical model that predicts the influenceof martensite on cyclic stress-strain response. Modelpredictions are in good agreement with experimentalresults.(3013)

Cyclic softening behaviour of a P91steel under low cycle fatigue at hightemperatureA. A. Saad et al.This paper describes a viscoplasticity model used torepresent the cyclic mechanical behaviour of P91 steel at600C. The microstructure of the steel at different lifefractions of the tests was investigated using SEM and TEM.The viscoplasticity model, with two stages of softeningperiod, has resulted in better prediction capability forthe cyclic behaviour of the material prior to crackinitiation.(3043)

Deformation behavior during thermo-mechanical fatigue of a nickel-basedsingle crystal superalloyH. U. Hong et al.The deformation behavior of CMSX-4 has been investigatedduring out-of-phase thermo-mechanical fatigue. Thedeformation was highly localized to area near crack tip,where multiple groups of twin plates formed by partialdislocation movement with {111}<112> slip during hightemperature-compressive half cycle. The twins provided apreferential path for crack propagation.(3055)

Mechanical properties of metal matrixcomposites based on TRIP steel and ZrO2ceramic foamsA. Glage et al.This study presents the mechanical behaviour of newlydeveloped metal matrix composites (MMCs) in terms ofcompression and fatigue properties. The matrix of the MMCsconsists of a high-alloyed metastable austenitic caststeel, which shows the TRIP-effect (TRIP-TRansformationInduced Plasticity). As reinforcing phase MgO partiallystabilized ZrO2 is used which can also undergo amartensitic phase transformation.(3077)


Chair: K. Eberhard

Modelling of crack propagation in Nickelbase single crystal superalloys usinganisotropic damage mechanicsP. A. Sabnis et al.A regularised model coupling single crystal plasticity andanisotropic damage mechanics is presented. Single crystalcrack propagation simulations under different kinds ofloading are presented and discussed.(3041)

Generalized Plasticity Theory for PhaseTransformationsV. P. Panoskaltsis, D. Soldatos, S. P. TriantafyllouIn this work we derive a new version of generalizedplasticity theory, suitable to describe phasetransformations. In particular, we present a general multi-surface formulation of non-isothermal generalizedplasticity capable of describing the multiple andinteracting loading mechanisms, which occur during phasetransformations. Our formulation has a geometric basis andtakes place within the context of tensor analysis inEuclidean spaces.(4149)

Evaluation of Deformation Behavior ofSilica Filled RubberY. Tomita, M. Naito, T. MochizukiWe developed a viscoelastic constitutive equation forrubber and a computational model of the monotonic andcyclic deformation behavior of Silica-filled rubber by thehomogenization method and the proposed constitutiveequation. A series of simulations revealed the typicalcharacteristic deformation behavior of rubber and themechanism of the enhancement of the characteristicmechanical behavior of Silica-filled rubber.(3825)

Effects of Coupled Fields on theMechanical Response of ElectricallyConductive CompositesA. Barakati, O. I. Zhupanska(3582)

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14:20-14:40

14:40-15:00

Yellow RoomWeldings

Chair: A. L. García-Fuentes

Stress Relief Cracking on the Weld ofT/P 23 SteelJ.C. Chang, B.S. Kim, N.H. HeoT/P 23 weld failures were investigated and possible causeswere considered. First, susceptibility of stress reliefcracking was tested through mechanical properties varyingheat treatment conditions. Second, intrinsic stress levelin pipe system was calculated by FEM using displacementdata. Finally, we investigated what elements in the fillercomposition affected stress relief cracking.(3062)

Mechanical and MicrostructuralCharacterization of Al-5083/St-12 lapjoints made by friction stir weldingM. Movahedi et al.Al-5083 and St-12 alloys sheets were friction stir lapwelded. Microscopic examinations indicate that the jointstrength is due to the macroscopic and microscopicmechanical lockings and also atomic diffusion. The fractureloads show that the joint strength improves significantlyby decreasing the travel speed of the tool.(3846)

Damage Monitoring of UltrasonicallyWelded Aluminum/CFRP-Joints duringCyclic Loading by Electrical ResistivityMeasurementsF. Balle et al.Ultrasonic welding was used to realize aluminumalloy/carbon fiber reinforced polymer (CFRP) – joints.Beside the monotonic properties the cyclic deformationbehavior of ultrasonically welded hybrid joints wasinvestigated. Additional to standard mechanical data thechange in the electrical resistance is used tomonitor the actual damage status in detail.(2866)


Chair: Z. Trojanova

Strength of adhesive aided SPR joint forAM50 magnesium alloy sheetsY. Miyashita et al.SPR (Self Piercing Rivet) joining was carried out with AM50magnesium alloy sheets. Cracking easily occurred at thelower sheet due to poor formability of the alloy. As apractical way to solve the problem, adhesive aided SPRjoining was proposed. Static and fatigue strength of thejoint was evaluated under shear tensile loading condition.(3309)

Scientific advances enabling nextgeneration management of corrosioninduced fatigueJ.T. Burns et al.Low water-vapor pressure (PH2O) and temperatureenvironments strongly influence the aluminum fatigueprocess. This work shows that enhanced fatigue resistancewith decreasing temperature is governed by lower externalPH2O coupled with decreased rate to form H from H2Oreaction with Al and/or H diffusion into the crack tipprocess zone.(3503)

Microstructure and Evaluation of Wire-brushed Mg SheetsH.Kitahara et al.The wire-brushing with different conditions was applied tothe AZ31B Mg sheets, and the microstructure, mechanicalproperties and corrosion resistance were investigated. Ananocrystalline surface layer, which consists of equiaxednano-crystals, can be obtained after the wire-brushing.Thewire-brushing can improve mechanical properties andcorrosion resistance of Mg sheets.(3511)


Chair: M. Zakeri

Stress distribution and crackpropagation under biaxial low cyclicloadingJ. G. Wang, Z. C. Wang, D. Y. Ju(3257)

Fatigue behaviour and surface relief inODS steelsT. Kruml, I. Kubena,J. PoláKLow cycle fatigue behaviour of two 14Cr ferritic steelswith ultrafine grains and strengthened by fine oxidedispersion is studied. The rough surface relief is formedin grains bigger than 1 micrometer only. Nucleation andearly growth of fatigue cracks is facilitated by thesurface relief which leads to important reduction of thefatigue life.(3285)

Fatigue Limit Evaluation of Blunt-Notched Specimen Using Kth Value ofSmall CrackT.Matsueda, Y.Aono, H. NoguchiAuthors proposed the method of evaluating the crackinitiation limit σw1 of the notch specimen using thethreshold stress intensity factor range ΔKth. Inaddition to it, it was confirmed that the σw1 valuepredicted from this method is within 18% error in annealed0.35% carbon steels.(3289)


Chair: J. Barredo

Numerical multiscale simulations of themechanical behavior of beta-metastabletitanium alloys Ti5553 and Ti17G. Martin, L. Nazé, G. Cailletaud(3813)

Experimental and numericalcharacterization of anisotropic damageevolution of forged Al6061-T6 alloyY. Shen et al.An anisotropic fracture behavior has been observed inforged Al6061-T6 alloy by smooth and notched tensile tests.2D and 3D microstructural studies have shown a presence ofanisotropic distributed precipitates. A damage scenario ofanisotropic coalescence of voids is proposed and simulatedby GTN damage model to explain this behavior associatedwith the distribution of precipitates.(3610)

Basic Analysis of MicrostructuralFracture Behaviour in StructuralMaterials by Using FEM with InterfaceElementH. Serizawa et al.A new finite element method with the interface element wasdeveloped for examing the microstructural fracturebehaviorhe. As the result of numerical researches using twodimensional virtual polycrystalline models obtained throughVoronoi tessellations, the slipping at grain boudary wasdemonstrated and the computed results have good agreementswith the experimental result.(2930)

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Chair: V. Lepov

Damage Modeling of Metallic Fiber-Reinforced ConcreteR. Hameed et al.Numerical model for fiber-reinforced concrete (FRC) ispresented. Considering FRC as two phase-composite,constitutive behavior laws of plain concrete and fiberswere described first and then they were combined accordingto anisotropic damage theory. The proposed model for FRC iseasy to implement in most of the finite element codes basedon displacement formulation.(3361)

Fracture mechanics of porous ceramicsusing discrete element simulationsX. Liu, D. Jauffres, C. L. MartinThe fracture behavior of highly porous ceramics issimulated using the discrete element method. A realisticbond fracture criterion is introduced and we compute theeffective strength of typical microstructures of porousceramics in tension as a function of the residual porosity.Furthermore, the introduction of a pre-crack in a samplesubjected to a remote tensile stress allows the fracturetoughness to be calculated.(3489)

Homogenization of periodic auxeticmaterialsJ. Dirrenberger et al.Negative Poisson’s ratio materials (auxetics) have drawnattention for the past two decades. Studies have shown thatauxeticity may result in higher shear modulus, fracturetoughness and acoustic damping. Three auxetic periodiclattices are considered here, including a new one. FEMcombined with homogenization is used to compute elasticmoduli and characterize anisotropy.(3516)


Chair: Y. Murakami

Low-Cycle Fatigue Deformation Behaviorand Evaluation of Fatigue Life onExtruded Magnesium AlloysK. Shiozawa et al.Total strain- and stress-controlled low-cycle fatigue testof three extruded magnesium alloys, AZ31, AZ61 and AZ80,were performed in ambient atmosphere using smooth round barspecimen. Fatigue life prediction was discussed with anenergy-based model taken into account of mean stress and/ormean strain which was occurred during fatigue cycling.(3087)

Resistivity – a characteristicfingerprint of fatigue induced changesin the microstructure of metallicmaterialsP. Starke, D. EiflerThis paper presents results of the cyclic deformationbehaviour of the quenched and tempered steel SAE 4140 andthe cast iron ASTM 80-55-06 based on stress-strainhysteresis, temperature and electrical resistance data. Theelectrical resistance offers additional information aboutthe cyclic deformation behaviour also in the range of lowloading amplitudes.(3237)

An investigation of the failuremechanisms in high temperature materialssubjected to isothermal and anisothermalfatigue and creep conditions.C.J. Hyde, W. Sun, T.H. Hyde(3282)


Chair: C. Colombo

A new model of localized plastic flowand failure of solidsL. B. Zuev, S. A. BarannikovaThe localized plastic flow auto-waves observed for thestages of easy glide and linear work hardening in a numberof metals are considered. The propagation rates weredetermined for the auto-waves in question with the aid offocused-image holography. The dispersion relation ofquadratic form derived for localized plastic flow auto-waves is discussed.(2936)

Micromechanical modeling of the cyclicsoftening of EUROFER 97 steelM.F.Giordana et al.Micromechanical modeling of the cyclic softening of EUROFER97 steel. The quenched and tempered ferritic/martensiticsteel EUROFER 97 is a candidate for structural componentsof fusion reactors. Under LCF tests this steel shows apronounced cyclic softening accompanied by the decrease ofdislocation density and the vanishing of LABs. Based on theidentified mechanisms of softening a polycrystalline modelis proposed.(2978)

Critical condition for shearlocalization of thermo-visco-plasticsingle crystalsM. ArulkumarA novel methodology is developed to estimate the criticalcondition for shear localization that accounts both micro-scale crystallography and macro-scale mechanical andthermo-dynamical properties of thermo-visco-plastic singlecrystal. Under simple shear loading, this methodology isapplied to map out regions of shear localization in thelattice orientation space.(3104)

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Yellow RoomWeldings

Chair: A. L. García-Fuentes

Weld Metal Composition and LiquationCracks during High Current Arc Weldingof Aluminum Alloy 5083C.H. Park et al.Welding of Al alloy (~60mm thickness) is required toachieve a full penetration for the LNG tank exploring polararea. The goal of this study is to investigate ametallurgical phenomenon for Al 5083 alloys during the highcurrent arc welding. Specifically, cracks and weld metalcomposition were investigated with respect to the currentof arc welding.(3484)

Experimental investigations on weldeddouble lap joints composed of timberB. Hahn et al.For this paper, experimental investigations on wood-weldeddouble-lap joints were carried out, in which a set ofparameters, including overlap length and member thicknesshas been varied. Subsequently, the mechanical resistance ofthe welded connection was experimentally investigated usingan adapted off-axis test which allowed characterizing afailure criterion for welded connections.(3302)

Mechanical Behaviour of SS 316 (N) Weldafter Long Term Exposure to ServiceTemperaturesB. Shashankdutt et al.Ambient temperature tensile, charpy-impact and fracturetest results on SS 316 L(N) welds (with ~5.5 FN delta-ferrite) in as-welded and thermally aged ( 643-823K,1000-20000 h) conditions indicate a decrease in toughnesswith ageing, while tensile properties are only marginallyinfluenced. The results are correlated with themicrostructural changes, mainly the alpha prime formationin the delta-ferrite.(3493)


Chair: Z. Trojanova

Tensile properties of AA6061 indifferent designated precipitationhardening and cold workingB. Mirzakhani,M. MansourinejadIn this study different designated precipitation hardeningand cold working were employed to study tensile propertiesof AA6061. Different precipitation hardening cyclesconducted after first and/or second cold rolling. Theresults indicated that improvement in mechanical propertiesand negative or positive effect of pre-aging mainly dependon the amount of cold work.(3515)

Influence of Twin Roll Casting andDifferential Speed Rolling onMicrostructure and Tensile Properties inMagnesium Alloy SheetsS.B.Kang et al.It is of great interest to combine twin roll casting (TRC)and differential speed rolling (DSR) technique for moreefficient production of magnesium alloy sheet with improvedductility. The present paper reports the comparison ofmicrostructure and mechanical properties of AM31 alloysfabricated by TRC/DSR and conventional processed ones.(3574)

Effect of Porosity on the High CycleFatigue Behavior of Casting AM60BMagnesium AlloyK. A. Lee et al.(3641)


Chair: M. Zakeri

Fatigue limit evaluation consideringcrack initiation for lamellar pearliticsteelS. Hamada et al.On the point of fatigue fracture origin of lamellarpearlite steel smooth surface specimen, a flat face with asize of tens of microns appears. By clarifying theinitiating mechanism of this flat face, the authordiscusses the "initial defect" which initiated in smoothsurface specimen, and predict the fatigue limit of thematerial considering the flat face.(3373)

Experimental characterization of shortfatigue crack kinetics in an austeno-ferritic duplex steelI. Alvarez-Armas et al.The present work reports the damage evolution during LCFand HCF behavior in an embrittled duplex stainless steel.For LCF, the results have shown microcracks nucleatingmainly along the favorable oriented slip planes regardingthe Schmid factor in the ferrite During HCF, cracksinitiate at grain or at phase boundaries and propagat inthe neighbor grain.(3405)

Notch Radius and Specimen Size Effectson Fracture Toughness of Low Alloy SteelA.-H. I. Mourad, A. El-DomiatyThe present work is amid to investigate the effect of notchroot radius and specimen size on the apparent fracturetoughness. Series of fracture tests on non standard CTspecimen of AISI 4340 low alloy steel with different valuesof notch root radius and ligament size have been conductedto measure the apparent fracture toughness.(3427)


Chair: J. Barredo

Fully Dynamic Numerical Simulation ofthe Hammer Peening Fatigue LifeImprovement TechniqueR.Baptista, V.Infante,C.BrancoThis paper presents the results of the development processfor a FEA of the Hammer Peening Fatigue ImprovementTechnique. A fully dynamic model was used, combined withthe Chaboche Kinematic-hardening material model. Thepredicted Fatigue Life using the FEA model where comparedwith the experimental results, showing a very goodagreement between them.(3098)

Numerical study of the inter-fibrefailure under biaxial loadsE.Correa, F. ParíS, V. ManticThe influence, at micromechanical scale, of the presence ofa secondary transverse load perpendicular to the transversetension nominally responsible for the matrix failure, isstudied for all phases of the mechanism of damage. TheBoundary Elements Method is employed and InterfacialFracture Mechanics concepts used for the analysis.(3324)

Monte Carlo Model for the Study ofPercolation Thresholds in Compositesfilled with Circular Conductive Nano-DisksA. B. Oskouyi, P. MertinyThe subject of the study described in this paper is thepercolation threshold of composites with conductive nano-scale fillers. A three-dimensional continuous Monte Carloalgorithm was developed to determine the percolationthreshold of polymers filled with two-dimensionalconductive circular nano-disks.(2962)

mon6

23

15:00-15:20

15:20-15:40

15:40-16:00


Chair: V. Lepov

Prediction of the overall behavior of a3D microstructure of austenitic steel byusing FFT numerical schemeA. Belkhabbaz et al.This work investigates the mechanical response of apolycrystalline aggregate by the use of 3D X-raydiffraction contrast tomography and the FFT numericalscheme which allows to use the digital image of themicrostructure as an input to compute the mechanicalresponse of a heterogeneous material. The efficiency ofthe method is emphasized and comparisons are made withestimates delivered by the self-consistent approach.(3585)

Simulation of Deformation Twinning inExtruded AZ31 Mg Alloy Bars using theCrystal Plasticity FEMS.- H. Choi et al.Uniaxial compression tests on extruded AZ31 Mg alloy barswere carried out to investigate the evolution ofdeformation twins and deformation texture during plasticdeformation. Electron back-scattered diffraction (EBSD)analysis was used to examine the orientation of parentgrains and twin bands in AZ31 Mg alloy under uniaxialcompression.(3654)

Homogenization of Linear ViscoelasticThree Phase Media: Internal VariableFormulation versus Full-fieldComputationV.Blanc et al.Homogenization of linear viscoelastic heterogeneous mediais here extended from two phase media to three phaseinclusion-matrix media. Using the classical Hashin-Shtrikman scheme, the overall stress-strain behaviour givesan exact internal variable formulation. Results aresuccessfully compared to full-field computations onrepresentative volume elements.(3678)


Chair: Y. Murakami

Influence of Microstructure on theQuasistatic and Low Cycle FatigueBehaviour of an AA2618 Aluminium AlloyO.Khalil, K.-H. LangThe aluminium alloy AA2618 is a typical material tomanufacture compressor wheels of turbochargers. Dependingon the size of the forging slugs locally differentmicrostructure may arise. It turns out that the yieldstrength depends on the grain size. The reduction in thelifetime correlates with the number of subgrains.(3401)

Experimental investigation of thebehaviour and the low cycle fatigue lifeof a welded structureA. Benoit et al.The behaviour of butt welded joints is studied in ferriticstainless steel plates to simulate junctions in exhaustmanifolds. Tension and low cycle fatigue tests arecompleted on base material and welded specimens. Usinglocal strain analysis and computation, the influence ofgeometry and microstructure is observed. Implications fordesign are discussed.(3684)

Evaluation of fatigue crack initiationin a notched single-crystal superalloycomponentD. Leidermark et al.The fatigue crack initiation in a notched single-crystalnickel-base superalloy component at 500°C has beeninvestigated and analysed. A critical plane approach incombination with a critical distance method has beenadopted. A good correlation between experiments andsimulations were seen, both regarding initiation planes andnumber of cycles to initiation.(3707)


Chair: C. Colombo

Stress Analysis of Functionally GradedDsic under Thermal and Mechanical LoadsA.Kursun, M.TopçU, T.TetikThe elastic stress analysis of annular discs made offunctionally graded materials subjected to both uniformpressures on the inner surface and linearly decreasingtemperature distribution has been carried out. The changeof the stresses, displacements, elasticity modulus andthermal expansion coefficient according to gradientparameters were investigated and presented.(4235)

A qualitative comparison of stresses ataircraft bolted joint holes underinitial clamping forceA. Atas et al.The stress state around the middle (skin) plate hole ofdouble-lap bolted joints are investigated under an initialclamping force for a quasi-isotropic CFRP compositelaminate and an aluminum alloy 7075-T6 plate. Thenoncommercial FE code ANSYS v12.0 is used for theanalyses.The stress analysis results are used to explainthe phenomena behind the different clamping forceresponses.(3763)

Softwood fracture characterisation atthe mesoscopic scaleL. Bigorgne et al.As a highly anisotropic and heterogeneous material,softwood mechanical characterisation is complex to analyseand deals with multiple variables. A mesoscopic model ofsoftwood is presented and validated in the elastic rangewith the use of DIC. A mechanical model is computed withthe material point method (MPM) and specific fracturecriteria are revealed based of experimental results.(3485)

mon6

24

16:30-16:50

16:50-17:10

17:10-17:30

Yellow RoomFatigue 1

Chair: I. Fernandez Pariente

Fatigue life prediction by the surfacerelief sensorS. Ignatovich, M. Karuskevich, T. MaslakNew fatigue sensor based on surface extrusion/intrusionpattern has been developed. Carried out investigations ofnew fatigue sensor at the wide range of cyclic loadsconditions show the ability for the sensor application inStructural Health Monitoring systems of planes, bridges,ships, and other structures.(4084)

Effect of inclusions on very high cyclebehaviour in a ferritic corrosionresisting steelF. Novy et al.The paper is devoted to an experimental examination of thefatigue behaviour of X12Cr13 corrosion resisting steel inthe HCF and UHCF region. The obtained S-N curve revealed acontinuous downward slope without any indication forplateau region, whereby surface and subsurface fatiguecrack initiation occurs in the used range of loadingamplitudes.(3925)

Effects of dissolved oxygen on fatiguecharacteristics of austenitic stainlesssteel in 0.9wt% sodium chloridesolutionsY.Otsuka, S.Nagaoka,Y.MutohFatigue strength becomes higher in low dissolved O2 NaClaq. at stress ratio R=0.1.However, fatigue strength did notchange in low dissolved O2 NaCl aq. at stress ratio R=0.5because of the effect of work hardening. Cycles to crackinitiations became longer and crack growth rates becamelower.(3359)


Chair: T. Ishina

Cavitation behavior of fine grained AZ31alloy sheet during hot blow formingY.-N. Kwon, Y.S.LeeCavitation behaviors of fine grained AZ31 alloy sheetduring blow forming have been investigated in terms ofdeformation and microstructure evolution. Especially,effect of hydrostatic stress has been investigated byexamining cavitation behavior. It was found thathydrostatic stress was not effective to prevent evolutionof cavities during blow forming.(3677)

A Continuum-Based Cyclic PlasticityModel for AZ31B Magnesium Alloy underProportional loadingM. Noban et al.The cyclic plasticity behaviour of AZ31B extrusion underaxial and shear loading, and a continuum-based cyclicplasticity model for the anisotropic behaviour of magnesiumis presented. Two different loading and unloadingconditions were considered to address the asymmetry ofyield. The plasticity of AZ31B under multiaxial loading ismodelled successfully.(3704)

The Effect of Chromate Primer onCorrosion Fatigue in AA7075-T651S.E. Galyon Dorman, Y.LeeAs greener corrosion mitigation systems replace legacycoatings, a loss in fatigue life may occur if the effect ofchromate on small scale fatigue damage is not understood.CAStLE at the USAF Academy has produced a fatigue testmethod to determine the effect of corrosion mitigationsystems on corrosion fatigue.(3723)


Chair: M. Guagliano

Effect of pore morphology on elastic,heat conduction and thermal shockfracture behaviors of porous ceramicsW.J. Lee et al.Four different porous microstructures were modeled andsimulated using a 3D finite element method. The effect ofpore morphology on the elastic and thermal properties ofthe porous ceramic was investigated. Their thermal shockbehaviors were discussed with results of finite elementsimulations in terms of pore shape and morphology.(3269)

Stress Corrosion Cracking of Novel Steelfor Automotive ApplicationsM. Khalissi, R.K. Singh Raman, S. KhoddamSusceptibility to SCC in 3.5% solution, of TWIP steels wasinvestigated using slow strain rate tests (SSRT), constant-load tests and fractography.The specimens tested in airrevealed a ductile type of failure, whereas those tested inthe corrosive solution exhibited a brittle feature that isattributed to stress corrosion cracking. SCC was observedat a relatively low strain rate.(4154)

Determination of Plane-Strain FractureToughness Using Cracked Round BarSpecimens and their Applicability forReliability Assessment CalculationsJ. LukáCsThe paper presents the role of the reinforcing on the steelpipeline integrity, based on experimental investigations.External and internal reinforcement technologies weredeveloped. Fatigue and burst tests were performed on largepipeline sections, containing different defects. Theapplicability of the hybrid structure was demonstrated bymeans of “safety factor”.(3299)

Green RoomCrack propagation assessment

Chair: L. Vergani

Dynamic modeling of cleavage crackpropagation and arrest with a localapproachA. Dahl, C. Berdin, D.MoinereauA local crack arrest criterion based on critical stress hasbeen recently proposed by some of the authors, for cleavagecrack propagating in a low alloy bainitic steel. Theapplication of this criterion on isothermal crack arrestexperiments shows that the crack propagation versus timeleads to a good prediction of the crack speed and of thecrack length.(3577)

Deterministic Analysis of Crack GrowthRates in Carburized SteelsK.O. Findley et al.Bending fatigue tests and fatigue modeling were conductedon carburized 4320 steel. The effective stress intensityreduction due to mechanically induced transformation ofaustenite to martensite in front of the crack tip wasmodeled to predict crack growth rates. The modelpredictions are in the experimental fatigue life datarange.(3557)

Numerical simulation of crack growththrough particulate clusters in brittlematrix using the XFEM techniqueZ.W. Wang, L. Ma, L.Z. WuThis paper presents a numerical method for crack growthmodeling in particle reinforced composite materials. Crackdeflection mechanisms and the associated energy releaserate variations are investigated. By this method, expensivemeshing strategies can be avoided and considerableflexibility is obtained.(2869)

mon6

25

16:30-16:50

16:50-17:10

17:10-17:30


Chair: T. Pirling

A Numerical Model for TransformationInduced Plasticity Bridging the Gapbetween the Macro- and the Meso-ScaleM. Fischlschweiger, G. Cailletaud, T. AntretterA certain amount of transformation induced plasticity showsreversible behavior when the loading direction is reversed.The approach presented in this paper therefore introduces atransformation related backstress term into atransformation potential. The model also accounts for thedifference in the phase stresses using a stress scalingconcept.(3748)

Post-buckling Delamination PropagationAnalysis using Interface Element withDe-cohesive Constitutive LawB. MohammadiIn the present study, the cohesive zone constitutive law isimplemented at interface between delaminated layers tosimulate buckling driven delamination propagation in thelaminates. The influence of single and multi delaminationson post-buckling behaviour of laminated are investigated.It is shown that post-buckling delamination propagation canbe predicted well, by utilizing a damageable interfaceelement.(3805)

Fretting Fatigue Life Estimations Basedon the Critical Distance Stress TheoryT.Hattori et al.Generally fretting fatigue S-N curve have two stages, oneis high cycle (low stress) region and second is low cycle(high stress) region. In previous paper we introduced thefretting fatigue life estimation methods in high cycleregion by considering the wear process. And in thisestimation method the fretting fatigue limit can beestimated as the crack initiation limit at contact edge. Inthis paper we estimated the low cycle fretting fatigue lifebased on new critical(2885)

Navy Blue RoomCyclic stress-strain response andfatigue fracture of materials

Chair: S. Beretta

Fatigue behavior of Pure Titanium SingleCrystals by Bending MethodS. Ando , M. Tsushida, H. KitaharaTo investigate fatigue fracture behavior of small titaniumsingle crystals, plain bending fatigue test method for thinsheet specimens was developed. S-N plots of each specimenshowed strong orientation dependence.(3739)

Stability of ultrafine-grained structureof copper under fatigue loadingL. Kunz et al.Changes of microstructure due to load-controlled andstrain-controlled fatigue, localization of cyclicplasticity into cyclic slip bands and microstructure intheir vicinity were experimentally studied on ultrafine-grained copper prepared by equal channel angular pressing.(3770)

Microstructurally small fatigue crackgrowth in thin, aluminum-alloy, pressurevessel linerA.D. Spear, A.R. IngraffeaIn this work, we design a study that includes bothexperimental and computational aspects to gain a three-dimensional understanding of the microstructure-dependentmechanisms governing fatigue crack initiation and small-crack propagation. The application of the study is forthin, aluminum 6061- T6 liner used in composite-overwrappedpressure vessels (COPVs). Preliminary results includematerial characterization using SEM and EBSD.(3795)

Violet RoomThermal treatments

Chair: S. Bagherifard

Manufacturing influences on the fatigueproperties of quenched and tempered SAE4140 specimensM. Klein, D. EiflerAccording to the specific process chain the surfaceintegrity and consequently the fatigue behaviour isinfluenced. The cyclic deformation behaviour can bebenchmarked with strain, high-precision temperature andelectrical resistance measurements. Electrical resistancemeasurements enable the monitoring of proceeding fatiguedamage during scheduled maintenances. The physically basedfatigue life calculation method “PHYBAL” was modifiedto calculate the lifetime.(3532)

Boundaries for increasing the fatiguelimit of the bearing steel SAE 52100 bythermomechanical treatmentsE. Kerscher, K.-H. Lang, D. LöHeOur thermomechanical treatment increases the fatigue limitof a high strength materials state only in cases in whichnon-metallic inclusions are the starting points of fatiguecracks. The reasons for this behaviour will be explainedand the border of the fatigue limit of high strength steelswill be discussed.(3256)

The effect of thermomechanical treatmenton the interface microstructure andlocal mechanical properties of rollbonded pure Ti/439 stainless steelmultilayered materialsK. S. Lee et al.The influence of different thermomechanical treatmentprocesses upon Interface microstructure and localmechanical properties of a Ti/STS clad metals aresystematically investigated. A stron dependence betweensecondary roll bonding process condition and a kind ofdiffusion hardening was detected by increasing interfacehardness.(3668)

mon6

26

17:30-17:50

17:50-18:10

18:10-18:30

18:30-18:50

Yellow RoomFatigue 1

Chair: I. Fernandez Pariente

Effect of Quantity of MartensiticTransformation on Fatigue Behavior inType 304 Stainless SteelM. Nakajima et al.The effects of martensitic transformation on the fatiguebehavior of type 304 stainless steel were studied. Thespecimens subjected to the same prestrains at ambienttemperature and 248K exhibited similar fatigue strength inspite of the different amount of martensite, but in 3%NaClsolution the fatigue strength of specimens prestrained at248K decreased significantly compared to those inlaboratory air.(2963)

Effect of alloying elements on thethermal fatigue properties of theferritic stainless steel weld HAZD. Oh et al.The effects of the addition of Nb, W, and V alloyingelements on the thermal fatigue properties of the ferriticstainless steel weld heat affected zone (HAZ) wereinvestigated. The fatigue life during cyclic heating andcooling in the temperature range of 200 to 900 °C wasstrongly related to precipitation, coarsening Laves phase,solid solution and grain coarsening.(3669)

Variation of Fatigue Threshold of SpringSteel with PrestressingN. Gubeljak et al.Life time of spring material subjected to applied stressamplitude from microstructural threshold up to criticalcrack length of high strength steel has been determine, bycombining fracture mechanics parameters, fracturetoughness, fatigue propagation Paris range parameters C andm, and considering inclusion size as crack's initiationarea.(3957)

Estimation of the fatigue life accordingto lap joint weld profiles for ferriticstainless steelJ.S. Kim, K. M. Lee, B. Y. LeeIn this study, fatigue strength was evaluated according tothe lap length and gap size in the overlapping area by atensile stress FEM analysis and fatigue test. The gap sizeis more effect than the lap length to the fatigue life. Andthe result of analysis and test were consistent.(3200)


Chair: T. Ishina

An investigation on warm deformationbehaviour of AZ80 magnesium alloy usingthe ring compression test andconstitutive modelsF. Fereshteh-Saniee, S.M. Pezeshki-NajafabadiThe stress-strain response of the AZ80 magnesium alloy fromring compression tests over a range of temperatures,strains and strain rates were obtained. Material behaviourwas characterized through two different constitutivemodels. The variation of peak stress and activation energyof hot deformation (Q) with temperature, strain and strainrate were assessed.(3835)

Deformation behavior and mechanicalproperties of Mg-Zn-Ca alloysD.-W. Kim et al.Tension twins present in RE containing alloys promote theformation of recrystallized grains with random texture,resulting in improved formability of Mg-RE alloys. Mg-Zn-Ca(ZX) alloy is non-rare earth alloy, in spite of that, Italso shows that Mg-Zn-Ca (ZX) alloys has weaker basaltexture than the other Mg alloys.(3068)

Finite Element Analysis of Drilling ofTitanium AlloyO. Isbilir, E. GhassemiehA 3D model of drilling of Ti6Al4V is developed. The modeltakes into account of the damage initiation and evolutionof work piece, a contact model between drill bit and workpiece and the process parameters. The results of thesimulations demonstrate the effects of machining parameterson drilling. The results also confirm the capability andadvantage of FE simulation of the drilling process.(3870)

Deformation Behavior under a BiaxialLoading of AZ31 Magnesium Alloy SheetsH. L. Kim, W. Bang, Y. W. ChangDeformation behavior of an AZ31 under a biaxial loading hasbeen studied in relation to initial texture developedduring rolling process. Different twin modes were observedunder a biaxial loading, viz. double twin and compressiontwin modes in a RD-TD specimen and extension twins mainlyin a ND-TD specimen(3069)


Chair: M. Guagliano

Cracking Phenomenon Occurring during HotRolling of Bi-containing Free-CuttingSteel RodsY. Kim et al.The increased carbon contents and the appropriate controlof the hot-rolling processes including minimization ofrolling ratio, temperature variation, and cooling waterwere suggested in order to prevent or minimize the hot-rolling cracking.(3544)

Micromechanisms of Fracture in SomeDuctile Iron Casts and Structural SteelsI.Ferreira et al.(3175)

An in-situ experimental-numericalapproach for interface delaminationcharacterizationJ. Hoefnagels, M. Kolluri, M. Geers(4100)

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Green RoomCrack propagation assessment

Chair: L. Vergani

Fatigue strength properties ofprecipitation strengthening stainlesssteel A286 focused attention on smallfatigue crack behaviourH. Wu et al.Different from the common steels, the fatigue failuresoccur even after 10^7 cycles on precipitation strengtheningstainless steel A286. In order to investigate the reason,the author paid attention to the behaviour of small fatiguecracks behaviour and finally found the reason.(3199)

Monitoring of Fatigue Crack Stages inHigh Carbon Steel Rotating Shaft UsingVibration MethodA.A. Mohamed et al.This paper describes experimental tests to examine thevibration characteristics in two different types of cracksin a long rotor shaft, a notch to varying depths and actualcrack growth from a pre-crack. The approach was to set upexperimental apparatus develop a vibration detectionsystem. Fatigue crack initiation and propagation in a pre-cracked shaft was experimentally evaluated.(4155)

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mon6

27

17:30-17:50

17:50-18:10

18:10-18:30

18:30-18:50


Chair: T. Pirling

Implementation of strain-life fatigueparameters estimation methods in a web-based systemR. Basan et al.In the framework of the presented work, a web-basedinformation system consisting of material propertiesdatabase and expert system for the estimation of cyclic andfatigue material parameters has been established. Materialproperties database is user-expandable and draws mainly onexisting, published literature sources and results ofrelevant research.(3194)

Comparative study and application of acoupled nonlinear kinematic hardeningmodel for structural metallic materialbehaviourJ.Guo, K.Xin, M.HeComparative study and application of a coupled nonlinearkinematic hardening model for structural metallic materialbehaviour is presented.(3949)

Macro and micro process modeling of thecutting of carbon fiber reinforcedplastics using FEMR. Rentsch, O. Pecat, R. BrinksmeierFor the simulation of cutting CFRP a macro model withcontinuous but anisotropic properties and a micro modelwith explicit fiber / matrix representation have beendeveloped using ABAQUS. Results show good agreement toexperiments regarding the material removal mechanism andthe trend of forces, unlike the force values.(4010)

Topology optimisation of a bulkheadcomponent used in aircrafts using anevolutionary algorithmR. Das, R. JonesThe paper demonstrates the application of a modifiedEvolutionary Structural Optimisation (ESO) algorithm foroptimal topology design of a bulkhead used in an aircraft.The ESO based topology optimisation resulted inconsiderable reduction in the weight of a structure and anoptimum material utilisation by generating a uniformlystressed structure.(3861)

Navy Blue RoomCyclic stress-strain response andfatigue fracture of materials

Chair: S. Beretta

The Influence of the Load Variation onFatigue Strength of the Spot WeldedJoint using the High Strength SteelR.Tanegashima et al.In this study, three dimensional observation of the fatiguecrack propagation in the spot welded joints was carried outusing the high strength steel. Then, it was cleared itenabled to evaluate fatigue characteristics of the jointsusing the same criterion nevertheless the stress level.Moreover, fatigue properties under variable loadingconditions were also considered for practical applications.(3554)

Contribution to the fatigue assessmentof laser welded jointsM. Stoschka et al.A contribution to the fatigue behaviour of laser weldedjoints with different process parameters andsimilar/dissimilar material combinations as often used inautomotive industry is given. Accompanying fatigue analysisand weld simulation was done to achieve local tendencies.The notch stress approach using an effective radius of0.05mm is used to assess the fatigue life.(3767)

A study on the prediction of frettingfatigue behaviorK. Shin, G. W. KimThis study was to characterize the fretting fatigue crackinitiation behavior in the presence of plasticity. Toachieve this aim, experimental tests were performed usingpad configurations involving elastic-plastic deformations.And to calculate stress distributions under elastic-plasticfretting fatigue conditions, FEA was also performed.(3135)

Discussion of models for LCF small crackgrowthS. Beretta, S. Foletti, L. PatriarcaThe life assessment for a component subjected to highstrain concentration in critical regions can be treated asa crack growth estimation. This work is focused on theanalysis of LCF tests carried out by the aim of specimenswith semi-circular notches. A new analytical model able topredict the crack growth rates is presented.(6006)

Violet RoomThermal treatments

Chair: S. Bagherifard

Effect of Post-Heat Treatment on BondingInterfaces in Ti / Mild Steel / Ti CladMaterialsD.S. Bae et al.The effect of post heat treatment on the bonding interfaceproperties in Ti/Mild steel/Ti clad materials wasinvestigated. Microstructure of Ti/MS interfaces wasobserved and the micro Knoop hardness was measured atdiffusion layer. The bonding forces of Ti/Mild steelinterfaces were measured by the peel test.(3081)

Influence of intermetallic precipitatesand heat treatment on the mechanicalproperties of high-temperature corrosionresistant ferritic steelsN. Nabiran, S. Weber, W. Theisen(3300)

Fatigue Strength of X45CrSi93 stainlesssteel applied as internal combustionengine valvesH. J. C. Voorwald, R. C. Coisse, M. O. H. CioffiThe objective of this research is to study the influence onthe axial fatigue strength of the resulting microstructureafter heat treatment at the martensitic X45CrSi93 steel,combined with different surface treatments as hard chrome-plating, nitride and grinding.It was verified a significantincrease on the fatigue strength of the martensitic steelafter nitriding, compared with results from the chrome-plating specimens.(2942)

Simulation of cyclic stress-strainresponse during residual stressrelaxation under cyclic loadingS. KwofieInteraction of residual stress and cyclic stress wouldresult in biased cyclic loading conditions. When the sum ofresidual stress and cyclic stress exceeds the local yieldstress, cyclic plasticity would occur, resulting inrelaxation of residual stress. A model is presented for thedescription, simulation and evaluation of residual stressrelaxation occurring under constant amplitude loading.(2939)

Tuesday 7th


A perspective on hydrogen embrittlement in

fatigue

Y. Murakami

9:30 – 18:30 Lectures

tue7

30

09:30-09:50

09:50-10:10

10:10-10:30

Yellow RoomCombined high- and low-cycle fatigue(organized by M. Filippini)

Chair: M. Filippini

Fatigue crack growth behaviour ofInconel 718 – the concept of a damagedzone caused by high temperature holdtimesD. Gustafsson et al.Fatigue crack growth testing of Inconel 718 has beencarried out. The tests were conducted using a mix of holdtimes and pure cyclic loading, referred to as block tests.From the test results, the existence of a damaged zone inthe vicinity of the crack tip has been revealed.(3703)

Effect of combined cycle fatigue onTi6242 fatigue strengthL. Mendia et al.Gas turbine blades are subjected to high levels of stressand temperature during each operating cycle (LCF).Superimposed upon this condition, blades also endurevibrational stresses (HCF). The aim of the study is todetermine the influence of combined cycle fatigue (CCF) onthe expected fatigue strength of blade-like specimens.(3827)

Cyclic plastic response and fatigue lifein symmetric and asymmetric cyclicloadingJ. Polák et al.The response of materials to cyclic strain- andstress-controlled loading with mean stress isexperimentally investigated. Hysteresis loops were analyzedfor the contribution of the effective and internalstresses. Plastic strain amplitude and cyclic creep rateswere evaluated and their contribution to the fatigue damagehas been analyzed.(2950)

Orange RoomModels of behaviour of materials 2

Chair: K. Ohguchi

Notch Stress Intensity Factors Appliedto U and V-Shaped Radiused Notches underIn-plane Shear LoadingM. Zappalorto, F. Berto, P. LazzarinThe present work provides an application of the mode IIGeneralised Notch Stress Intensity Factor for U-shaped andV-shaped radiused notches. In the absence of an exact modeII stress field solution for this kind of notches, theNSIFs are determined using a solution recently developedfor V-notches with end-holes.(3115)

Atomic Scale Studies of Spall Behaviorin Single Crystal CuA M. Rajendran, A. M. Dongare, B. LamattinaTo develop a fundamental understanding of the yieldbehaviors of a void containing single crystal copper, weemployed the embedded atom method potential based moleculardynamics (MD) simulations. In addition, the spallphenomena in nanocrystalline and polycrystalline copperspecimens were numerically analyzed through MD and finiteelement simulations under one-dimensional strain states.(3892)

The (G'/G) expansion method for thecoupled Boussinesq equationR. AbazariIn this work, the (G'/G)-expansion method is applied toconstruct the exact solutions of the coupled Boussinesqequations, where the French scientist Joseph ValentinBoussinesq (1842-1929) described in the 1870’s modelequations for the propagation of long waves on the surfaceof water with a small amplitude. Each of the obtained so-lutions, namely hyperbolic, trigonometric and rationalfunction solutions contain an explicit linear function ofthe variables in the considered equation.(3779)

Red RoomFundamentals of cohesive zone models(organized by M. Alfano)

Chair: M. Alfano, M. D. Thouless

The Influence of Cohesive-Zone FractureParameters and Traction-Separation Lawson Mixed-Mode FractureM. D. Thouless, R. B. Sills(3561)

A Mixed Cohesive Law IncorporatingInterface Roughness Effects under (near)Pure Mode II CrackingB. F. SøRensen, S. GoutianosUnder Mode II cracking, a fracture process zone can inducea displacement normal to the cracking plane. A potentialfunction based mixed mode cohesive law is developed todescribe this behaviour and implemented in a finite elementprogram. The model is validated against experimentalresults under various mode mixities.(3875)

Novel approach for the treatment ofcyclic loading using a potential-basedcohesive zone modelI. Scheider, J. MoslerA thermodynamically consistent cohesive zone model suitablefor the analysis of low cycle fatigue is elaborated in thepresent contribution. Therein, a plasticity-based cohesivelaw including isotropic hardening is supplemented by adamage model. First results of this new approach to cyclicloading will be presented illustrating the applicability tolow cycle fatigue.(3838)

Green RoomLight alloys 2

Chair: J. Burns

Differing microstructural properties of7075-T6 sheet and 7075-T651 extrudedaluminium alloyT. J. Harrison et al.This paper details an investigation of the microstructureof 7075-T6 sheet and 7075-T651 extruded aluminium todetermine the possibility of any differece in the corrosionbehaviours of the two manufacturing processes. It was foundthat the extrusion had a more laminar grain structurewhereas the sheet formed more of a network of grainboundaries, leading to the possibility of differentcorrosion behaviours.(4083)

Structural durability of automotiveforged aluminium chassis componentssubmitted to corrosion and spectrumloadingN. HäGele, C.M. SonsinoFor safety components the structural durability design hasto be carried out under consideration of service spectrumloading inclusive special events and corrosion resultingfrom salty roads in winter. By the example of forgedaluminium tension struts of a BMW of the 3-series it isdemonstrated how the design must be carried out andverified.(4156)

Corrosion and fatigue behavior of new AlalloysJ. A. Moreto et al.Fatigue life of two new Al alloys AA2198–T851 andAA7081–T73511 was evaluated considering the effect of asaline environment. The alloys presented similar corrosionresistance and it was possible to evaluate the deleteriouseffect of pits formation on fatigue life of pre-corrodedspecimens, with cracks initiating from many nucleationsites.(3768)

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10:10-10:30

Light Blue RoomFracture mechanics in defect assessmentprocedures (organized by C. Ruggieri)

Chair: C. Ruggieri

Comparison Between Fully-PlasticSolutions and the Reference StressApproach to Evaluate J in Circum-ferentially Cracked Pipes Under BendingC.RuggieriThis work addresses a comparison between fully plasticsolutions and the reference stress approach which areapplicable to determine J in circumferentially crackedcylinders under pure bending. The results derived from 3-Danalyses provide representative functions relating theelastic-plastic crack-tip driving forces with the applied(remote) bending moment for both J estimation procedures.(3293)

The Influence of the Lode Parameter onDuctile Failure Strain in SteelI. Barsoum, J. FaleskogAn experimental investigation was conducted on tensileround circumferentially notched bar specimens, which werecompared to the experimental result on double notched tubespecimens subjected to tension and torsion conducted in [5]with the objective to assess the influence of the Lodeparameter on the ductile failure strain. The influence ofthe Lode parameter was remarkable for the high strengthsteel.(4132)

Variation of Material Failure Curve withConstraintM. Hadj Meliani, Y.G. Matvienko, G. PluvinageA two-parameter fracture criterion has been proposed topredict fracture conditions of notched components. Theseparameters were derived from the volumetric method. Thematerial failure curve Kρ,c =f(A3,ef ) has beenestablished to predict fracture conditions was demonstratedon gas pipes with the longitudinal surface notch.(3464)

Navy Blue RoomNew perspectives in numerical modelingof mechanical behavior of materials 2(organized by S. Forest)

Chair: F. De Angelis

Modeling of Failure Mechanisms Using theTrue Stress-Strain Response of PolymericFoam MaterialsB.-H. Choi, A. Chudnovsky, K. Sahanobish(3203)

Numerical modeling of uneventhermoplastic polymers behaviour usingexperimental stress-strain data andpressure dependent von Mises yieldcriteria to improve design practices.G. H. Bolognesi, D. M. BianchiThis work addresses the effects of pressure dependent Misescriteria (parabolic and conic models) on design practicesfor polymeric materials that present uneven yield strengthunder tension and compression. Four polymers wereuniaxially tested and analytical and numerical models weredeveloped to accommodate the different criteria looking formass reduction while keeping safety.(3843)

The macroscopic elastic anisotropy intough ceramics from the single crystalelastic behavior.M. A. Caravaca, R. A. Casali, C. A. PonceTheoretical calculations of elastics constants and theanisotropy in the Young modulus are applied to toughceramics and their dependence of hydrostatic pressuresand axial stress into the crystal are given. These resultscould be useful in the interpretations of experimentalresults obtained by the method known as diffraction elasticconstant (DEC).(3879)

Violet RoomHydrogen Embrittlement

Chair: F. Bolzoni

Investigation of Hydrogen EmbrittlementBehavior in API X65 Pipeline Steel underPressurized Gas Exposure Using SmallPunch TestH.-S. Shin et al.In this study, in order to find out the possibility ofsimple test method using a small-size specimen, theevaluation of hydrogen embrittlement induced by exposure toAPI X65 pipeline steel under highly pressurized gasconditions using small-punch test (SPT) was tried. Theresults revealed that SP test is possible to use underhighly pressurized gas conditions.(3726)

Low Cycle Fatigue Life and CyclicDeformation Behavior of NormalizedMedium Carbon Steel with Hydrogen-ChargingY. Tsuchida et al.(3483)

The Effect of Hydrogen on the MaterialFailure Curve of APL 5L Gas Pipe SteelsM. Hadj Meliani et al.The effect of hydrogen on the material failure curves ofAPL 5L gas pipe steels was analysed from viewpoint of thenotch fracture mechanics. The material failure curves basedon two-parameter fracture criterion have been determinedfor API 5L X52, X70 and X100 gas pipe steels.(3487)

Pink RoomNatural Fiber Composites

Chair: Z. Xia

Tensile strength of polyester resinreinforced sugarcane bagasse fibersmodified by estherificationE. F. Rodrigues, T. F. Maia, D. R. MulinariIn this work, chemical modification of the sugarcanebagasse fibers by estherification to use as reinforcementin polyester matrix was studied. Fibers were mixed toresin, compression molding, it was left to cure andmachined into specimens of according to ASTM D-3039.Results relieved that composites presented bettermechanical strength compared to resin.(3168)

Mechanical behavior of natural fiberscompositesA. C. Milanese, M. O. H. Cioffi, H. J. C. VoorwaldPolymers composites reinforced with sisal woven fabricswere characterized by tensile tests using castor-oil basedpolyurethane (PU) and phenolic as resins. Influences ofsisal moisture content on the mechanical behaviors werestudied. Four composites: dry sisal/PU, humid sisal/PU, drysisal/phenolic and humid sisal/phenolic were tested and itsfractures analyzed by SEM.(3118)

Mechanical characterization andmodelling of interfacial lamella withina flax bundleK. Charlet, A. BéAkouThe modelling of natural fibre based composites behaviorrequires to know the mechanical properties of itsconstituents, especially those of the interfaces. Whereasfibre/matrix interfaces are already relatively welldescribed, properties of fibre/fibre interfaces are stillmissing. Here, they have been characterized, which enabledthe estimation and modelling of their shear behavior withina bundle.(3033)

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11:40-12:00


Chair: M. Filippini

High-temperature fatigue crack growth inAlloy 718 – Effects of tensile hold-timesM. HöRnqvist, T. MåNsson, D. GustafssonThe mechanisms behind hold-time fatigue crack growth inAlloy 718 was investigated and an attempt was made tomodel the crack growth rate using a superposition modelwhere the cyclic and hold-time crack growth increments wereadded. Predictions of the total crack growth rate aregenerally adequate, but predictions of the individualcontributions do not correlate with the physical reality.(3560)

Evaluation of Factors Affecting CyclicSoftening Behaviors of Mod. 9Cr-1MoSteelD. W. Kim, W.-S. RyuFatigue tests were conducted at RT-600¡ÆC and cyclicsoftening was evaluated with temperature, strain range,heat treatment, aging, and welding. Amount of cyclicsoftening increased with temperature, was the lowest forweldment, increased with yield stress. Cell structureformation, the increase of lath width,recovery wereimportant at high temperature.(3089)

Deformation and Damage Mechanisms inIN792 during Thermo Mechanical FatigueJ. Kanesund, J. Moverare, S. JohanssonThe deformation and damage mechanisms arising duringthermomechanical fatigue (TMF) of the polycrystallinesuperalloy IN792 have been investigated. The TMF cyclesused in this study are in-phase (IP) and out-of-phase (OP).The temperature is cycled between 100-750°C in the IP TMF-tests and between 100-850° and100-950°C in the OP TMF-tests.(3912)


Chair: K. Ohguchi

Constitutive Modeling for SAC Lead-FreeSolder based on Cyclic Loading Testsusing Stepped Ramp WavesK.-I. Ohguchi, K. SasakiAn elastic-plastic-creep constitutive model for Sn-Ag-Cu(SAC) lead-free solder subjected to cyclic loading wasproposed. The model was constructed based on theexperimental information of the development behavior ofboth the plastic and creep strains during cyclic loadinginvestigated by conducting cyclic loading tests usingstepped ramp waves.(3232)

An application of Chaboche model topredict uniaxial and multiaxialratchetingA. H. Mahmoudi, H. Badnava, S.M. Pezeshki-NajafabadiApplication of an optimization procedure can improve theprediction of Chaboche model. In this research, Chabochekinematic hardening model with five decomposed rules wasused and a multi objective Genetic Algorithm was employedto determine the model parameters.(2956)

The Mechanism and Constitutive Equationof a Transformation Plasticity andMetallo-thermo-mechanical ProcessSimulationsT. Inoue(3552)



Cohesive zone model simulation offatigue debonding along interfacesF. Moroni, F.Carta, A. PirondiA cohesive zone model is developed to simulate fatiguecrack propagation along bonded interfaces. The model isimplemented by means of the USDFLD-subroutine in thecommercial software Abaqus. In particular, the crack growthincrement is translated into a damage increment per cyclein the cohesive elements ahead of the crack tip. Thecomputation of the strain energy release rate wasspecifically implemented.(4033)

Influence of hydrogen coverage on theparameters of a cohesive zone modeldedicated to fatigue crack propagationC. Moriconi, G.Henaff, D.HalmA cohesive zone model with a specific traction-separationlaw accounting for damage accumulation under fatigueloading has been implemented in ABAQUS using subroutineUEL. The parameters of the traction-separation law alsodepend on local hydrogen concentration. In the bulkmaterial, hydrogen diffusion is modelled using ABAQUScoupled temperature-displacement step.(3421)

Cohesive modeling of bone fracture atmultiple scalesA. UralBone is a hierarchical material that involves fracturemechanisms at multiple scales. This paper presents theapplication of cohesive modeling to the assessment ofmacro- and microscale fracture mechanisms in bone to helpdevelop robust bone fracture risk assessment tools.(3720)


Chair: J. Burns

Study of friction stir processing (FSP)and high pressure torsion (HPT) andtheir effect on mechanical propertiesK. H. Raj et al.In the present study an improvised Vertical Milling Machineis designed to perform FSP on thin metallic sheets ofAl6061 and their microstructure and hardness are studied.Also Finite element (FE) modelling of HPT of a circulardisc of commercially pure aluminium (Al99) is attempted toevaluate mechanical properties prior to experimentation.(4583)

The post-repair performance of Ti-6Al-4Vafter foreign object damageN. Orchowski, R. Mohammed, G. Clark, M. Brandt(2849)

Damage accumulation model for aluminumclosed cell foamsH.Pinto, S. ArwadeA model to obtain the damage accumulation, directly as afunction of the number of cycles applied, the strainamplitude, and the initial value of damage is presented. Tothis end the statistical Weibull model for modeling thefatigue behavior of metal foams and the failure criteriaprovide by Ingraham et al. were considered.(3164)

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11:40-12:00


Chair: C. Ruggieri

Effect of Internal Pressure on TensileStrain Capacity of X80 PipelineS. Igi, T. SakimotoPipe tension tests were conducted to investigate thetensile strain capacity of pressurized pipe with girt weld.SENT tests and FEA were also performed to predict thestrain limit of the pipe tests using R-curve and crackdriving force curve. The predicted strain limit showed goodagreement with that obtained in the pipe tests.(3465)

Propagation of Anti-plane Shear Waves ina Cracked Graded Strip with ViscousDampingS.M. Mousavi, S.J. FariborzThe dislocation-distributed technique is utilized to studythe elastodynamic fracture behavior of a graded isotropiclayer with viscous damping. The familiar Cauchy singularityis detected at the location of dislocation. Then thedislocation is utilized for the formation of cracks in thestrip. The resulting equations results in the stressintensity factors (SIF) for the crack configuration in thestrip.(3428)

Constraint Assessment of BrittleFracture of Steel Components, ISO 27306vs. FITNET FFSF. Minami, M. OhataISO 27306 and FITNET FFS have been developed recently forcorrection of constraint loss in structural components.Both methods employ the Weibull stress as a driving forceof brittle fracture. Nevertheless, the dissimilarity isfound between the two methods. This paper compares ISO27306 with FITNET FFS in terms of the constraint correctionratio.(2989)



Influence of vacancy defects on themechanical behavior and properties ofcarbon nanotubesM. ChwalIn the numerical analysis pristine and defective carbonnanotubes are taken into account in order to find how thepresence of defects affects on the mechanical properties ofthe analyzed structures. The imperfect carbon nanotube ismodeled as the structure with one missing carbon atom.(3154)

Experimental and Numerical Investigationof High Strain Rate Mechanical Behaviorof a [0/45/90/- 45] QuadriaxialE-Glass/Polyester CompositeA. Tasdemirci et al.Quasi-static and high strain rate compression behavior ofan E-Glass / Polyester composite was investigated. In bothdirections, modulus and failure strength increased withincreasing rate. Higher strain rate sensitivity for bothelastic modulus and failure strength was observed in thein-plane direction. A numerical model was developed usingLS-DYNA. Excellent agreement was demonstrated.(2985)

Implicit integration scheme for porousviscoplastic potential-basedconstitutive equationsS. Msolli, O. Dalverny, M. KaramaIn this paper, an implicit integration method is applied toan viscoplasticity model based on a Duva and Hutchinsonporous potential. The potential is applied usually for nonhardening matrix material containing dilute concentrationof spherical voids. The model is integrated and implementedto the finite element code Abaqus as a subroutine UMAT forvalidation purposes.(3088)


Chair: F. Bolzoni

The Influence of Hydrogen on ThermalDesorption Processes in StructuralMaterialsR. Bar et al.(4209)

Influence of Irreversible Hydrogen andStress Cycle Frequency on the FatigueCrack Growth Property in High-strengthSteel and Hydrogen VisualizationM. Nakatani et al.In this study, the influence of irreversible hydrogen onthe fatigue crack growth in cold-drawn high-strength steelwas investigated to clarify the mechanism of fatiguestrength degradation by irreversible hydrogen. Moreover,the behavior of irreversible hydrogen near the crack tipunder cyclic loading was visualized using a hydrogenmicroprint technique.(3221)

Hydrogen Embrittlement Type StressCorrosion Cracking Behavior of WroughtMagnesium Alloy AZ31Y. Uematsu, T. Kakiuichi, M. NakajimaSCC behavior of wrought magnesium alloy was investigated.SCC tests were performed using CT specimens in 3%NaClsolution under hydrogen charged conditions, where thecathodic potentials were -1.4 to -3.0V. Under the immunitycondition, hydrogen embrittlement type SCC occurred whereKIscc value was higher than that of corrosion type SCC.(3024)


Chair: Z. Xia

Mechanical Behaviour of Polyurethanefrom Castor oil Reinforced SugarcaneStraw Cellulose CompositesP.C. Miléo et al.Ecological concerns have resulted in a renewed interest innatural, renewable resources-based and compostablematerials. For this reason, material components such asnatural fibres and biodegradable polymers can beconsidered as interesting alternatives for the developmentof new biodegradable composites.The aim of this work wasthe obtainment of castor oil polyurethane reinforced withcellulose fibres from sugarcane straw(3435)

The effects of polypropylene fibers andrubber particles on mechanicalproperties of cement compositecontaining rice husk ashA. Sadrmomtazi, R. Z. Zanoosh(4559)

Fracture Behavior and MechanicalProperties of Bamboo Reinforced ConcreteMembersM. Terai, K. MinamiRecently, in the attention in response to global warmingissues and sustainable society, the manufacturing usingnatural materials has become actively. Bamboo is expectedto contribute significantly to some problems in developingcountries. The authors have been studied for understandingthe mechanical behavior of bamboo RC and clarifying thedifferences of structural properties from steel RC andbamboo RC.(3729)

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13:00-13:20


Chair: M. Filippini

Creep-Fatigue Life Evaluation forMaterials Subjected to NonproportionallyCombined Tension and TorsionK. TokimasaThe results of the in-phase and out-of-phase strainingaxial-torsional creep-fatigue tests conducted on thin-walled tubular specimens of SUS304, 316LC and 2.25Cr-1Mosteels are summarized, and the applicability of theproposed creep-fatigue life estimation method based on thestrain range partitioning for materials subjected tononproportional loading is examined.(3222)

Thermal fatigue testing of bulkfunctionally graded materialsM. Fazarinc et al.The aim of the present study was to determine thesuitability of using the functionally graded materials inapplications subjected to thermal fatigue (TF). A speciallydesigned TF test was utilized for testing the FGM samples.The test results show that the silicon distribution hassubstantial effect on TF resistance.(3588)

Creep-Fatigue Crack Growth Behavior ofPb-Contained and Pb-Free Solders at Roomand Elevated TemperaturesK. Fakpan et al.Fatigue crack growth tests of lead-contained (Sn-37Pb) andlead-free (Sn-3.0Ag-0.5Cu) solders were conducted underfrequencies ranged from 10 to 0.1 Hz and a stress ratio of0.1 at room temperature and 70°C. J-integral range andmodified J-integral were used for discussing about cycle-dependent and time-dependent crack growth behavior for boththe solders.(3960)

(0)


Chair: K. Ohguchi

On stress singularities at plane bi- andtrimaterial junctions - A way to derivesome closed-form analytical solutionsC. Sator, W. BeckerStress singularities at 2D bi- and tri-material junctions,consisting of dissimilar, homogeneous, isotropic andlinear-elastic wedges under a plane strain state are areanalyzed by the complex variable method. With the help of anovel approach it is demonstrated how to derive somesolutions for the orders of the stress singularities in aclosed-form analytical manner.(3693)

Modelling damage to real surfaces incontact within a unified frameworkK. Zhou et al.we present a unified framework to model various surfacedamage patterns (including chipping wear, gradual wear, andparticle pull-out), competition between them, and surfaceevolution due to them. The frame work is based on a generalsolution for multiple 3D arbitrarily-shaped inhomogeneousinclusions near surfaces under contact loading.(3147)

Modeling and properties of inclusionsimmersed in carrier fluid subjected toexternal fieldM.BarskiThe subject of the present work is to determine theeffective magnetic permeability of magneto-rheologicalfluids subjected to the action of an external magneticfield. In the case of an ordered structure inside therepresentative volume element the evident anisotropy ofmagnetic properties is obtained.(3157)

Meso-scale analysis of angle-plylaminatesF. Ellyin, Y. Zhang, Z. XiaA meso-scale unit cell model for a general

θ]mn angle-ply laminate is proposed.

Appropriate periodic boundary conditions, a nonlinearviscoelastic model and a damage model describing the matrixmaterial are presented. The stress-strain response and thedamage for laminates with different values of θ arepredicted.(3591)



Fracture simulation based on EA-cohesivemodel with natural fracture/decohesionmechanismM. He, K. Xin, J. GuoEA-cohesive model with natural fracture decohesionmechanism is discussed and numerical results are presented.(3950)

Tensile Behaviour of Anti-symmetric CFRPCompositeK. J. Wong et al.A 17-ply anti-symmetric carbon/epoxy composite undertensile loading is studied. Hashin ply damage model isadopted to describe the damage behaviour of the plies,whereas the interfaces are characterised by mixed-modecohesive damage model. The damage contours exhibit anti-symmetric behaviour. Near tab regions are more susceptibleto failure.(3674)

Simulation of debonding in Al/epoxyT-peel joints using a potential-basedcohesive zone modelM.Alfano et al.The aim of this work is the analysis of toughness ofAl/epoxy joints with laser treated substrates. A potential-based cohesive zone model of fracture is employed tosimulate crack propagation. In turn, the bond toughness ofthe joints is determined and a comparison among numericaland experimental quantities, such as deformed shapes,loads-displacements curves of the joints, is made.(3732)

Numerical studies of crack propagationalong patterned bimaterial interfacesP. Zavattieri et al.(3834)


Chair: J. Burns

Elastic Bending Behavior of AluminumAlloy FoamF. Triawan et al.The elastic bending behavior of aluminum alloy foam isstudied by experimental investigations and theoreticalanalysis. The measured flexural moduli are found to besignificantly larger than the corresponding Young’smoduli. From the theoretical analysis, the different incell local-deformation under uniaxial loading and bendingconditions was found to play a prominent role in thediscrepancy.(3543)

Heat treatment of a friction-stir-weldedand spin-formed Al-Li alloyS. J. H. Wesley, A. TayonPrototype end domes for cryogenic tanks were fabricatedusing friction stir welding and spin forming. Subsequentheat treatment to a high strength temper resulted inweldment properties which were below specifications. Themicrostructural reason for this was identified and amodified heat treatment procedure was developed toalleviate the problem.(3291)

Effect of small temperature variationson the tensile behaviour of Ti-6Al-4VJ. Galán López et al.Ti-6Al-4V tensile behaviour is highly dependent on strainrate and temperature. In this work, the effect of smalltemperature increments and moderate strain rates isstudied. The results will show that only very lowdeformation speeds can be considered quasi-static and willbe applied to the determination of the parameters of theJohnson-Cook plasticity model.(3151)

Grain size and solute effects on thedeformation behaviour of extruded Mg-ZnalloysE. Meza-GarcíA, R. GonzáLez-MartíNez, P. Beaven(3306)

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13:00-13:20


Chair: C. Ruggieri

Implementation of the GTN Damage Modelto Simulate the Small Punch Test on Pre-Cracked SpecimensJ. M. Alegre, I. I. Cuesta, P.M. BravoThe main objective of this work is to apply the Gurson-Tvergaard damage model to simulate the load-displacementcurve obtained from the P-SPT, and to establish amethodology for obtaining the constitutive parameters ofthe material from the stages observed in the P-SPT. Thismodel simulates the material behaviour from the initialelastic behaviour until its failure considering thenucleation, growth and coalescence of microvoids.(3326)

Biparametric fracture toughnesscharacterization of Eurofer steel platesC. Rodríguez et al.The room temperature fracture toughness behaviour (criticalJ integral, JQ) of an hot rolled and heat treated Eurofersteel was determined using standard elastoplastic fracturemechanics tests. The constraint effect on its fracturebehaviour was also obtained using fracture specimenssubjected to different triaxialities in order to define theEurofer fracture toughness evolution against triaxialityconditions.(3174)

Effect of Material Combinations andRelative Crack Size on the StressIntensity Factors of Edge InterfaceCracksX. Lan et al.The stress intensity factors (SIFs) of a single edgeinterface crack in the bi-material bonded strip subjectedto in-plane tension and bending moment are investigatedsystematically. The SIFs are computed for arbitrarymaterial combinations with varying the relative crack sizea/W.(3095)

The Dominant Role of the Crack-tipMechanical Environment into the CyclicResponseY. Katz(2856)



Estimation of the compressive and shearresponses of three- dimensional micro-lattice structuresK. Ushijima, W.J. Cantwell, D.H. ChenThis paper presents a theoretical analysis for predictingthe initial stiffness and plastic collapse strength formicro-lattice structures under uniaxial compression ortransverse shear loading. This theoretical analysis isbased on the observed deformation mechanisms by numericalanalysis, FEM, and can, in principle, be developed topredict the elastic properties of other micro-latticestructures(3265)

Roles of mechanical heterogeneities anddamage on the overall mechanicalbehaviour of hollow-tube stackingsV. Marcadon et al.The present work explores the influence of the constitutivematerial behaviour of cellular materials on their effectivemechanical properties. To address this issue, sandwichstructures consisting of brazed hollow tubes have beentested under compression and simulated thanks to FEM.Different mechanical behaviours have been considered forthe constitutive materials, with or without damage.(3675)

Effective behaviour of viscoelasticpolycrystals and associated local fieldsinferred from homogenization:incremental collocation approachQ. H. Vu, R. Brenner, O. CastelnauAn incremental homogenization method, based on theequivalence between the collocation method and an internalvariables approach, has been developed to estimate theeffective behaviour of linear viscoelastic anisotropicheterogeneous media. The new formulation is thenillustrated for polycristalline materials. The derivedestimates coincide with reference ones obtained by FFT.(3931)

Analysis of Interaction betweenDislocation and Grain Boundary by usinga Lattice Defect ModelA. NakataniA generalized grain boundary (GB) energy of GB-dislocationsystem is evaluated by using the extended finite elementmethod with solving the problem of dislocation-disclinationsystem. First, the comparison between the results ofdisclination model and atomistic model is discussed. Then,the strain energy of the GB-dislocation system is studiedto evaluate the driving force of the dislocation motion.(3243)


Chair: F. Bolzoni

Hydrogen delayed fracture behavior ofcaliber rolled high Mn steelsY. S. Chun et al.Caliber rolling was conducted to TWIP steel at roomtemperature up to 82% reduction of area, resulting in thetensile strength to 2287 MPa. Hydrogen delayed fractureresistance of TWIP steels, though of its higher strength,was much higher than that of cold heading quality boltsteel.(2912)

Modeling of Hydrogen Damage in Materialsusing Phase-field MethodS.Q. ShiDetrimental effects of hydrogen have been observed for manyconventional and advanced materials. Small amount ofhydrogen can result in loss of ductility and brittlecracking. Higher hydrogen content may cause nucleation ofgas bubbles, blisters or brittle hydride precipitates. Thispaper presents recent progresses of computational modelingbased on the phase-field method in predicting hydrogendamage in materials.(3886)

Influence of Hydrogen and LowTemperature on Pipeline SteelsMechanical BehaviourP. Fassina et al.In low temperature environments, the risk of brittlefailure of gas transporting pipes can be increased in thepresence of high H2S content. Two pipeline materials, F22low alloy and X65 micro-alloyed steels, electrochemicallycharged with hydrogen, showed fracture toughness reductionin J integral tests, from room temperature to T=-120°C.Results were confirmed by fracture surface examination.(3981)

Utilizing acoustic emission testing todetect high-temperature hydrogen attack(HTHA) in Cr-Mo reformer reactors andpiping during thermal gradientsC. AllevatoAET is a NDT technique used to detect/locate damagemechanisms. HTHA is a concern since vintage C-Mo steelsremain in operation. For AET to succeed, HTHA damage mustbe stressed to levels beyond normally seen during normaloperations. Thermal gradients offer such an opportunity.These cause micro-fissures to propagate and be detectableby AET.(2953)


Chair: Z. Xia

Mechanical properties of HIPS/sugarcanebagasse fiber composites afteraccelerated weatheringK. C. C.C. Benini, M. O. H. Cioffi, H. J. C. VoorwaldHigh impact polystyrene (HIPS) as well as HIPS reinforcedwith mercerized and bleached sugarcane bagasse fiberscomposites are investigated. After accelerated weatheringperiod of 900 h, under UV-B radiation and moisture regularcycles, changes in mechanical properties are investigatedby tensile tests. Materials fracture surfaces areinvestigated by scanning electron microscopy (SEM).(3550)

The Influence of Ageing on the ImpactDamage of Carbon Epoxy CompositesH. Mokhtar, O. Sicot, J. RousseauThis study is on the influence of ageing on the carbonepoxy composite when impact is applied. Three differentstacking sequences were aged up to 2100h at a temperatureof 70°C and relative humidity of 85%. The mass wasmeasured regularly. The specimens were impacted and damagewas evaluated via ultrasonic analysis (C-scan).(3377)

The Influence of Ageing on the ImpactDamage of Carbon Epoxy CompositesH. Mokhtar, O. Sicot, J. RousseauThis study is on the influence of ageing on the carbonepoxy composite when impact is applied. Three differentstacking sequences were aged up to 2100h at a temperatureof 70°C and relative humidity of 85%. The mass wasmeasured regularly. The specimens were impacted and damagewas evaluated via ultrasonic analysis (C-scan).(3377)

Processing and mechanical properties of3Y-TZP/Ta compositesA. Smirnov et al.The first attempt to produce a matrix of zirconia (3Y-TZP)strengthened with Ta metal particles (20%. vol) withlamellar shape has been presented. These new cermets wereobtained by a wet-processing route of commercial powdersand sintered by different methods at 1400°C. Themechanical properties and microstructure were investigated.(3382)

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Yellow RoomApplications 1

Chair: K. Hans Raj

The Role of the External and InternalReinforcing on the Structural Integrityof Damaged Steel PipelinesJ. LukáCs, G. Nagy, I. TöRöKThe paper presents the role of the reinforcing on the steelpipeline integrity, based on experimental investigations.External and internal reinforcement technologies weredeveloped. Fatigue and burst tests were performed on largepipeline sections, containing different defects. Theapplicability of the hybrid structure was demonstrated bymeans of “safety factor”.(3298)

Isothermal, Thermo-Mechanical andBithermal Fatigue Life of Ni Base AlloyHR6W for Piping in 700oC USC PowerPlantsY.Noguchi et al.Three types of high temperature fatigue tests are carriedout for HR6W, which is one of the candidate materials forpiping in an advanced USC power boiler. The relationsbetween the partitioned inelastic strain range determinedby the strain range partitioning method and the life inthose tests show good agreement.(3050)

Experimental and Numerical Study ofExpanded alluminum and Steel TubesA. C. Seibi, I. Barsoum, A. MolkiThis paper presents experimental and numerical results ofexpanding aluminum and steel tubes using conical mandrels.Effect of the expansion ratio and mandrel angle on thetubes structural response was studied. It was found thatthe drawing force and stress levels in expanded steel tubesare much higher than the ones in aluminum tubes; thereby,require more power to conduct the expansion process.(3116)

Orange RoomMechanics of Short Fiber ReinforcedPolymers 1 (organized by A. Bernasconiand F. Meraghni)

Chair: F. Meraghni

Constitutive behavior of injectionmolded short glass fiber reinforcedthermoplastics: a phenomenologicalapproachA. Launay et al.SGFR thermoplastics exhibit a highly non-linear mechanicalbehavior under complex mechanical loadings, for varioustemperature and humidity conditions. A phenomenologicalconstitutive model is proposed, describing several physicalmechanisms such as viscoelasticity, thresholdlessviscoplasticity and cyclic softening. The anisotropicmicrostructure resulting from the injection process istaken into account through orientation tensors.(2976)

Evaluation of a Simulation Process forFatigue Life Calculation of Short FibreReinforced Plastic ComponentsC. Guster et al.In this article the influence of fibre orientation andtemperature on the fatigue behaviour of a short glass fibrereinforced (sgfr) polyamide is presented in terms ofS/N-curves. These results are the basis for fatigue lifecalculation with FEMFAT. For evaluation of a new simulationprocess component tests and fatigue life calculations wereperformed and results are shown in this article.(3812)

Variable amplitude loading withcomponents made of short fibrereinforced polyamide 6.6J. Hartmann et al.Based on experiments with flat specimens made of shortglass fibre reinforced polyamide the damage accumulationunder variable amplitude loading was investigated.Furthermore, fatigue tests with components made of the samematerial were performed. Concluding, the transferability ofthe determined results obtained with specimens tocomponents was investigated by applying local concepts.(3030)

Red RoomFatigue 2

Chair: A. Pirondi

Damage Accumulation Due to SequentialLoading EffectL. Reis et al.Damage accumulation is a well known concept in multiaxialfatigue but the achievement of damage quantification andassociate it to fatigue life estimation is still a bigchallenge. The aim of this work is to study the damageaccumulation generated in 42CrMo4 steel due to differentsequential biaxial loadings.(3785)

Fatigue of Constructional Steel S460under Complex Cyclic Stress and StrainSequencesM. VormwaldConstruction steel S460 in a non-welded condition has agood fatigue resistance. The present paper outlines indetails both the cyclic deformation behaviour and also thefailure behaviour in the case of fatigue. The experimentalresults are juxtaposed consistently with the calculationresult by applying the current model. Thereby the range ofissues extends from the simple uniaxial load to the complexmultiaxial non-proportional load.(2981)

From generic towards a micromechanicalfatigue modelE. AltusThis paper describes two generalizations of the basicGeneric Fatigue Model: a.) Two-level loading, in which ahistory dependent microdamage evolution law is proposed,b.) Multiaxial fatigue response by a simple 2D truss.Emphasize is on minimal parameters and analyticalpredictions. Material constants have physical ormicrogeometrical meanings. Predictions are coherent withmain experimental features.(3166)


Chair: C. M. Sonsino

The effect of a heat treatment onimproving the fatigue properties ofaluminium alloy 7075-T6 coated with TiNby PVDR. H. Oskouei, R. N. IbrahimAl 7075-T6 coated with TiN using a PVD process showed aconsiderable reduction of 94% in the fatigue strength afterexperiencing the high deposition temperature. However, thefatigue tests results after applying T6 cycle (as a postheat treatment) revealed large improvements in the fatiguestrength of the coated material.(2994)

Localized deformation during fracture ofhigh-strength aluminum alloyH. Toda et al.X-ray microtomography has been utilized for the observationof fracture behaviors in an aluminium alloy. Local crack-driving forces have been obtained to evaluate complicatedcrack initiation and growth behaviour. Micro-crackingoccurs far beyond the large strain region that has beendetermined in the conventional fracture mechanics. Shearbanding ahead of a crack-tip has also been visualised andquantified.(3341)

Characterization of Selectively LaserMelted Ti-6Al-4V Micro-lattice StrutR. Hasan, R. Mines, P. FoxCharacterization works on SLM Ti-6Al-4V micro-lattice strutin this paper includes geometrical and microstructurestudies on the material. The microstructure wasinvestigated to understand the materials behaviour andperformance. Suggestions to improve mechanical behaviourwith the introduction of heat treatment after manufacturingprocess will then be identified.(3001)

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Light Blue RoomFracture mechanics in defect assessmentprocedures

Chair: J. Belzunce Varela

Asymptotic solutions and estimations ofsome three-dimensional problems forbodies weakened by plane crack systemsB. V. SobolAnalytical solutions of three-dimensional problems relatingto the elastic space, half-space and layer equilibrium,containing systems of plane cracks were constructed. Wehave established some features of mutual interactionbetween the cracks and the borders on the stress-intensityfactor in the contour vicinity for each particular case.(3009)

Statistical evaluation of fracturetoughness with stable crack extensionT. Tagawa, M. Ohata, F. MinamiThe scatter of fracture toughness in ductile-brittletransition temperature region was experimentally examinedon low carbon steel. The bi-linear Weibull slope wasdiscussed according to the Weibull stress criterion at thestably extending crack tip. The modification of the mastercurve was also discussed considering the stable crackextension.(3059)

Effect of micro voids on stresstriaxiality-plastic strain states ofnotched steelsZ.G. Zhou, A. NishidaRound bars with different type of notches were modeled tostudy the stress triaxiality-plastic strain states ofnotched steels. Two material models with voids (Gurson-Tvergaard-Needleman model) and without voids(Mises model)were used to do the analyses and investigate the effect ofmicro voids.(3416)

Navy Blue RoomMixed mode fracture mechanics

Chair: A. De Jesus

Surface Crack Growth Simulation underMixed Mode Cyclic Loading ConditionM. Kikuchi, Y. WadaSurface crack growth process by fatigue is simulated usingS-version FEM. Complicated crack growth process in3-dimensional field under mixed mode loading condition canbe modelled easily by this method. Simulation results arecompared with experimental ones and discussed.(2898)

Fracture Assessment of Blunt V-NotchesUnder Prevalent Mode II Loading by Meansof Local EnergyF. Berto, M.R. Ayatollahi, P. LazzarinThe main purpose of this research is to re-analyseexperimental results of fracture loads for blunt V-notchedsamples under mixed mode (I+II) loading consideringdifferent combinations of mode mixity ranging from puremode I to pure mode II. The suitability of fracturecriterion based on the Strain Energy Density (SED) ischecked in the paper.(3112)

Numerical and experimental study ofmixed-mode cracks in non-uniform stressfieldD.Camas, P.Lopez-Crespo, A.Gonzalez-HerreraThe shape of the plastic zone of a hole-in-a-plate sampleunder mixed-mode conditions are studied by means of 2D and3D numerical models. Seven mixed-mode cases are achieved byapplying a constant load and varying the loading angle. Thedigital image correlating technique was used to validatethe numerical results.(3335)

Violet RoomMultitechnique approach to residualstress measurements (organized by A.Wojtas)

Chair: A. Wojtas

Residual stress measurement in thinfilms using the semi-X. Song et al.Residual stress evaluation in thin films was achieved usinga semi-destructive trench-cutting method. FIB was employedto mill the trenches, while SEM imaging was used to recordimages for strain change evaluation by DIC. A mathematicaldescription of the strain relief curve as a function ofmilling depth was proposed.(2922)

Experimental investigation of theinfluence of residual stress due tocuring shrinkage on the interphaseformation in adhesively bonded jointsM. Presser, P. L. GeissResidual stresses in adhesively bonded joints due toshrinkage (chemical reaction) or thermal movement of theadherents are likely to reduce load capacity of anassembly. In this paper rheometric measurements are used toevaluate the change of viscoelastic properties of theadhesive while curing as well as to determine theperpendicular forces developing in the adhesive jointduring the curing process.(3570)

Coupled multi-disciplinary methods forstructural reliability and affordabilityC.C. ChamisA method is presented for Non-DeterministicMultidisciplinary Optimization of engine compositematerials and structures. An engine duct made with ceramicmatrix composites (CMC) is evaluated probabilisticallyunder combined thermo-mechanical loading. The uncertaintiesare in all relevant design variables (fabrication, materialproperties, and loading parameters). Results are presentedfor lower bounds of 0.001 and upper bounds of 0.999.(3590)

Pink RoomComposites 1

Chair: A. Ferreira

Applicability of Scaled Models inPrediction Flutter of DelaminatedComposite Beam-PlateA. Yazdi1 , J. Rezaeepazhand(3682)

Damage and energy absorption in GFRPlaminates impacted at low-velocity:indentation modelV. Lopresto, C. Leone, G. CaprinoImpact tests were performed on glass fibre-reinforcedplastics, varying the impact energy, thickness, and tupdiameter. A previous model, for the prediction ofindentation as a function of impact energy was modified toestablish a correlation with absorbed energy. A comparisonwith data from literature concerning carbon-fibre-laminateswas presented.(3132)

A statistical analysis for the apparentresponse of random linear compositesM. Salmi et al.(3696)

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Chair: K. Hans Raj

Design, development, testing anddeployment of the world’s first fullyautomated individual body armor x-rayinspection systemL.J. D’AriesWith the onset of conflict and troop deployments into SouthWest Asia in 2003 during Operation Iraqi Freedom, theRadiography Laboratory at the US Army ARDEC was approachedto investigate the feasibility of designing an automatedinspection system to examine the integrity of all the SmallArms Protective Insert (SAPI) ceramic body armor platescurrently in service.(3917)

Optimization of Tube HydroformingProcess Using Simulated annealingAlgorithmM. Mirz et al.In this paper, forming parameters of tube hydroformingprocess are investigated and optimized using SimulatedAnnealing optimization algorithm linked with a finiteelement commercial code. The goal of this research is toobtain the maximum form-ability of tubes under a failurecriteria based on material’s forming limit diagram.Besides, comparison with experimental investigations areperformed.(3162)

Effect of Alloying Elements on Ductile-to-Brittle Transition Behaviour of High-Interstitial-Alloyed 18Cr-10MnAustenitic SteelsB. Hwang, T.-H. Lee, S.-J. KimThe ductile-to-brittle transition behavior of high-interstitial-alloyed austenitic steels containing similaramount of N + C was affected by austenite stability. At thesame content of alloying elements, the N + C alloyed steelhad a lower DBTT than the N alloyed steel, presumablybecause the combined addition of N + C enhances themetallic component of interatomic bonds.(2901)


Chair: F. Meraghni

Investigation of damage evolution inshort glass fibres reinforced polyamide6,6 under tensile loading using infraredthermographyA. Ghorbel et al.(4006)

Multiaxial fatigue life assessment forreinforced polymersS. Castagnet et al.(4009)

Effect of Chemical Treatment on theFlexure Properties of Natural Fibre-Reinforced Polyester CompositeM. Rokbi et al.The aim of this work is to study the influence of alkalinetreatments on the flexural properties. The alkalinetreatment conditions were optimized. The obtained resultsshowed that alkali treatment of Alfa fibers improves thequality of the fiber/matrix interface leading to a bendingproperties improvement.(3725)

Red RoomFatigue 2

Chair: A. Pirondi

The cyclic elasto-viscoplastic behaviorof a high-speed steel under forgingconditions - experiments and simulationsA. Ishmurzin et al.The presented model of the cyclic behavior of a toolincorporates nonlinear isotropic, nonlinear and thresholdnonlinear kinematic hardening mechanisms. The tension-compression asymmetry is modeled by a term proportional tothe third stress invariant. A finite element simulation ofa forging tool using this model illustrates itscapabilities.(3273)

Fatigue behaviour of high chromium steelfor rollsM.Drobne, P.GöNcz, S.GlodežFatigue behaviour of high chromium steel (HCS) for rolls ispresented. Due to compression loading of rolls, where slabsare reduced to the long stripes, special specimens havebeen used and tested under compression loading conditions.The experimental results determined in this study can serveas a basis for the further determination of service life ofrolls using stress-life approach.(3636)

Cyclic plasticity of structural elementsmade of materials which exhibit theyield-point phenomenonA. Zerovnik, R.Kunc, I. PrebilTaking account of the yield-point phenomenon inconstitutive models of cyclic plasticity affects thestress-strain response during the entire lifetime ofstructural elements which are subject to cyclic plasticity.The emphasis is placed on detailed determination of thebenefit as well as the functionality and necessity oftaking account of the yield-point phenomenon in simulatonsof cyclic plasticity.(3321)


Chair: C. M. Sonsino

Dynamic shear localization in Ti6Al4VJ.Peirs et al.SEM and TEM techniques are used to study the localmicrostructure and composition in adiabatic shear bands(ASB) and as such the driving mechanism for the ASBformation in Ti6Al4V. The shear bands are formed duringdynamic tests with planar, torsion or hat-shapedcompression specimens.(3161)

Cyclic plasticity and strainlocalization in cast gamma-TiAl basedalloyM. Petrenec, J. PoláK, P. BucekCyclic strain localization and surface evolution of surfacerelief in nearly lamellar cast gamma-TiAl based alloysTi–48Al–2Nb–2Cr–0.82B (all in at. %) cycled instrain control were experimentally studied. Hysteresis looparea, the cyclic hardening curves, the cyclic stress-straincurve and loop shape parameter were measured. Persistentslip markings are formed along interlamellar interfacesgamma/alpha2 and gamma/gamma.(3771)

Fatigue crack propagation law measuredfrom integrated digital imagecorrelation: the example of Ti35 thinsheetsF. Mathieu, F. Hild, S. RouxIn this study, a crack in commercially-pure Titanium (CP-Ti) is observed with optical means during its propagationin fatigue. Digital image correlation is then used toextract directly, with no post-processing step, the cracktip location and the corresponding stress intensity factoramplitude to evaluate the parameters of Paris’ law andother fracture parameters.(3000)

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Chair: J. Belzunce Varela

Fracture Assessment of U-notches underMode I Loading by means of criticalvalue of the J-integralE. Barati, F. BetoIn this paper, two practical linear-elastic equations forthe evaluation of the critical value of the J-integral inplates with U-notches under Mode I loading are presentedand applied to brittle and quasi-brittle materials. Theresults show that the Rc/ρ and the Poisson's ratiosaffect the Jcr.(2999)

Objective Assessment of Scatter and SizeEffects in the Euro Fracture ToughnessData SetK. WallinAn improvement of the statistical distribution comparisonmethod has been achieved by combining the Rank probabilityestimates with Binomial probability estimates. Thecombination of Rank and Binomial probability estimatesdouble the number of independent individual pointestimates, making the overall estimate more accurate withrespect to the true value. The strength in this statisticalanalysis method lies in the objectiveness of the result.(2899)

An assessment of the mechanicalcharacteristics and optimum weldingcondition of Ni-based super alloyY. S. Park, J. S. Ryu, D. H. BaeIn this study, the TIG welding process for the super alloy(Alloy 617), which is a heat- and corrosion-resistantmaterial, was optimized. The mechanical properties of theweld of Alloy 617 also were assessed on the basis ofreliability.(3410)

Navy Blue RoomMixed mode fracture mechanics

Chair: A. De Jesus

Crack Growth Behavior and SparkEmissions Observed in Fatigue of Zr-based Bulk Amorphous Alloy in AirY. Nakasone, Y. Kimura, N.A.JopriHigh speed camera revealed sparks were emitted from growingfatigue cracks in a Zr-based bulk amorphous alloy justbefore fracture. Scanning electron microscopy indicatedsparks occurred along shear lips. Shear tests were made anda deformation visualization method revealed that sparksoccurred along highly strained regions due to frictionbetween fracture surfaces.(3541)

Damage evolution during cross wedgerolling of steel DIN 38MnSiVS5M.L. N. Da Silva, G. H. Pires, S. T.ButtonDamage modelling can be useful for the study of criticalconditions in hot forming processes like Cross WedgeRolling. Using the Hansel-Spittel’s equation andexperimental tests, it was studied the behavior of steelDIN 38MnSiVS5 simulated with the finite element method. Forthis microalloyed steel the high sulfur content associatedwith high working temperature determined the formation ofcentral cavities.(2903)

Evaluation of Intensity of StressSingularity for 3D Dissimilar MaterialJoints Based on Mesh Free MethodT.Kurahashi, A.Ishikawa, H.KoguchiWe report that results of evaluation of intensity of stresssingularity for 3D dissimilar material joints based on meshfree method. In addition, results by mesh free method arecompared with that by the boundary element method.(2855)

Violet RoomMultitechnique approach to residualstress measurements (organized by A.Wojtas)

Chair: A. Wojtas

Effects of manufacturing-inducedresidual stresses and strains onhydrogen embrittlement of cold drawnsteelsJ. Toribio et al.Cold drawn wires, used in prestressed concrete structures,usually work in cathodic environments. This paper analyzesthe influence of the residual stress-strain profiles aftercold drawing on the hydrogen embrittlement susceptibilityof prestressing steels. Results show the relevant role ofthese profiles in hydrogen diffusion for different exposuretimes.(4103)

Residual stress analysis of shot-peenedaluminum alloy by fine increment hole-drilling and X-ray diffraction methodsE. Valentini, C. Santus, M. BandiniThis paper proposes an analysis of the fine-increment hole-drilling and of the x-ray diffraction methods for residualstress measurement. This analysis was carried out on someshot-peened aluminum alloy samples, with particularattention to the surface. The results obtained with the twomethods are discussed, to check the effectiveness of thetwo methods for the study of this class of materials.(3944)

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Chair: A. Ferreira

Investigation of influence of tab typeson tensile strength of E-glass/epoxyfiber reinforced composite materialsG. Belingardi, D. Paolinob, E. G. KorichoMechanical response of E-glass/epoxy fiber reinforcedcomposite was investigated in tensile loading. Differenttypes of tabs were considered to evaluate their effects onthe tensile strength of material. The influence of grippingpressures on failure mode and on tensile strength was alsoconsidered in the analysis. The experimental results showedthat the tabs configuration affected the tensile strengthof the specimens.(3528)

Finite Element Simulation ofThermomechanical Spinning ProcessY. Tadi Beni(8018)

Influence of voids on the flexuralresistance of the NCF/RTM6 compositesS. R. Montoro et al.In aeronautical applications, controlling the volumefraction of fibers, resins and empty the components ofcomposite is very hard. In this work, epoxy matrixcomposites reinforced with RMT6/NCF processed by RTM werecharacterized for porosity. The mechanical properties ofprocessed composites was evaluated by testing on theperforming flexural and the results were correlated withthe porosity value.(3851)

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Chair: A. Tasdemirci

Inspection and Evaluation of Corrosionin the Multi-layered Structure of AgingAircraftJ. Lee et al.(3477)

Weld-induced residual stresses in a T-butt welding of high strength steelpipes and comparison with design codeR. Seifi, V. AzarifarThis paper presents the three-dimensional FE simulation ofT butt welding residual stresses of steel pipes. Thethermo- mechanical model used as well as the simulationmethodology in detailed. In addition, parametric studieswith outside radius to wall thickness ratio have beenpresented to investigate the effects of pipe diameter onresidual stresses.(3844)

Using the Taguchi Method and FiniteElement Method to Analyze a Robust NewDesign for Titanium Alloy Prick HoleExtrusionD.C. Chen et al.We systematically examined the influence of the semi-coneangle on the prick hole die, the diameter of prick holedie, the factor of friction, the velocity of the ram andthe temperature of the billet, under various extrusionconditions. We analyzed the strain, stress and damagefactor distribution in the extrusion process.We used theTaguchi method to determine optimum design parameters.(2863)


Chair: F. Meraghni

Parameters Identification of FatigueDamage Model for Short Glass FibreReinforced Polyamide (PA6-GF30) usingDigital Image CorrelationF. Meraghni, N. Bourgeois, P. LoryThe paper focuses on the identification of a fatigue damagemodel. Damage parameters governing the shear induced damageare identified using homgeneous and heterogeneous fatiguetests carried out on a specific configuration. The in-planestrain components, measured by DIC technique, are coupledto numerical computations through an inverse method todetermine the parameters set governing the damageparameters.(4002)

Multi-scale experimental analysis of thetension-tension fatigue behavior of ashort glass fiber reinforced polyamidecompositeB. Esmaeillou et al.(4005)

A micro-mechanical model of the elasticproperties of a short fibre reinforcedpolyamideF. CosmiThe elastic moduli of short fibre polyamide reinforced withdifferent contents of glass fibres were computed by meansof a numerical model were based on the internal fibrestructure micro-tomography reconstructions. Changes instiffness, due to local variations in the fibre pattern,were detected even in the absence of notches.(4031)

Red RoomFatigue 2

Chair: H. Pinto

Controlling Factors for Sliding Wear ofMetallic Materials Undergoing PlasticDeformation during the WearN. Yoon et al.Dry sliding wear behaviour of plain low carbon steel, highcarbon steel, and STS304 stainless steel were studied atroom temperature. Correlation between microstructure(morphology and volume fraction of constituting phases) andthe wear rate were explored, and dynamic subsurface-strain-hardening was found to be the most important controllingfactor for the wear of the steel.(3028)

Influence of presetting on fatiguelifetime of torsion barsV. Mocilnik, N. Gubeljak, J. PredanThe analysis of different presetting twist-angle effect tofatigue lifetime under different applied strains has beenperformed. The experimentally obtained results show thatfatigue lifetime strongly depends on the ratio betweenloading presetting loading and the fatigue loading range.An empirical model has been proposed for fatigue life timeprediction.(3847)

A Direct Method for Calculation of Lowerand Upper Bound Ratchet LimitsJ. Ure et al.This work describes the lower bound ratchet analysis of theLinear Matching Method, which has the ability to analysecomponents with complex loading histories and temperaturedependent material properties. Implementation of the lowerbound is described and demonstrated using a pipeintersection example and is verified by full elastic-plastic FEA.(2932)

Green RoomCreep and temperature behaviour

Chair: M. Kvapilova

Thermal fatigue testing devices forfusion-related projectsO. Zlámal et al.Paper introduces thermal fatigue testing devices, developedand operated under fusion-related projects with focus ontesting of ITER First Wall (FW) mock-ups. Two devices arepresented: one in Centrum Výzkumu Řež, Ltd. (CVŘež), Czech Republic, and one in ForsungszentrumJülich (FZJ), Germany.(3471)

Creep behaviour and microstructurechanges of model cast Ni-Cr-W-C alloysM.Kvapilova et al.The creep behaviour, microstructural changes and creepdamage of four model cast Ni-Cr-W-C alloys with differentcontent of Cr, W and Fe were investigated (1023-1273 K,20-250 MPa). The creep characteristics of the alloys showsthat solid solution strengthening is strongly dependent ontungsten content for temperatures up to 1173 K.(2931)

Mathematical Modeling of Creep Inducedby Machining Residual StressesT. W. Spence, M. M. Makhlouf(2888)

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Chair: K. Findley

Numerical simulation and experimentalinvestigation of the damage behavior onelectron beam welded jointsH. Y. Tu et al.Experimental and numerical investigations of crackpropagation on S355NL steel electron beam welded joints arepresented. The Rousselier model is applied to study thecrack propagation of C(T) specimens under differentconfigurations. Force vs. Crack Opening Displacement (COD)and fracture resistance (JR) curves derived fromsimulations are found in good agreement with theexperimental observations.(4611)

Corrosion fatigue crack propagation ofhigh-strength steel HSB800 in a seawaterenvironmentD.-H. Kang, J.-K. Lee, T.-W. KimCorrosion fatigue crack propagation (CFCP) of high-strengthsteel, HSB800, was investigated in air and seawaterenvironments. A mechanisms-based model enabling predictionof CFCP is presented. The CFCP rates in a seawaterenvironment were higher than those in air. The results wereconsidered possibly by hydrogen embrittlement and anodicdissolution mechanisms.(3452)

Assessment of fatigue crack growth dataavailable for materials from Portuguesebridges based on UniGrow modelN. N. Abdullah et al.A crack propagation model based on a local strain approach– the UniGrow model – was assessed using availableexperimental fatigue crack growth data available for twomaterials from Portuguese bridgesThe performance of theanalytical procedure originally proposed in the UniGrowmodel to compute the residual stresses was checked by meansof an alternative finite element analysis.(3144)

Navy Blue RoomDynamic behaviour

Chair: G. Previati

Reliability achievement of the drivingsystem parts through development ofvibration-fatigue evaluation methodD.H. Jung, A.Gafurov(3706)

Structure and Stability of NonlinearVibration Mode in Graphene SheetY. Doi, A. NakataniEnergy localization due to nonlinearity of atomicinteractions in a graphene sheet is investigated. Byiteration method, long-alive vibrational modes areobtained. Some characteristics of the localized mode suchas spatial structure, amplitude and vibrational frequencyare discussed. Adding to this, we investigate the linearstability of the modes by numerical analysis based onFloquet theory of periodic solutions.(3689)

Spectral-analysis-surface-waves-methodin ground characterizationJ. Fernández et al.Prediction models for vibrations require an accuratecharacterization of the propagation medium i.e. the soillayers. To this end the spectral analysis of surface waves(SASW) method has been chosen. In the paper tests carriedout at the Segovia railway station as well as the influenceof several parameters on the estimated soil profile will bedetailed.(3751)

Violet RoomSurface engineering 1 (organized by M.Guagliano and C. Rodopoulos)

Chair: M. Guagliano

Mechanics of High Strength and HighDuctility MaterialsJ.Lu et al.(2983)

A simplified approach for predictingplain and notch fatigueM. Benedetti, V. Fontanari, M. BandiniA simplified analytical approach was developed forcomputing residual stress relaxation and surface residualstress field in plain and notched samples of shot peenedAl-7075-T651. The predicted residual stress distributionwas incorporated into a multiaxial fatigue criterion basedon the critical distance theory for fatigue strengthcalculation.(2933)

Finite Element Simulation of ShotPeening Coverage with the SpecialAttention on Surface NanocrystallizationS. M. Hassani-Gangaraj, M. Guagliano, G. H. FarrahiA challenge of the existing shot peening finite elementmodels shows that they could not reflect the realisticcoverage. A variable dimension symmetry cell is developedin order to acquire full coverage and at the same time notincreasing the computational cost. This model cansuccessfully simulate the surface nanocrystallization.(3271)


Chair: M. Quaresimin

Dynamic Debonding Strength of FiberGlass CompositeF. E. GunawanA laminated composite may fail by various mechanisms:debonding, delamination, fiber fracture, matrix cracking,and fiber buckling. The experiment for the purpose is oftendifficult particularly in a high-strain rate case. Wepresent an experimental technique to obtain the mechanicalproperties of the debonding in the high-strain rate case.(3499)

Mechanical Behaviour of PolypropyleneReinforced Palm Fibers CompositesS. A. S. Goulart et al.In this work, the effect of coupling agent in the palmfibers/ PP composites was evaluated on mechanicalbehaviour. Palm fibers were mixed with the polymeric matrix(PP) in a thermokinetic mixer with 5 wt% in thecomposition. Results showed that, the addition of couplingagent in the composites improved significantly the flexiblestrength and modulus when compared to the pure polymer.(3167)

Effect of Residual Stresses on theSurface Fatigue of TiC-based CarbideCompositesF. Sergejev, H. Klaasen, J. KüBarseppXRD studies shown that “plasticity” of carbide grainsis very much the case for fatigue mechanisms description ofthe carbide composites. The TiC carbide grains betterabsorb plastic deformation during cyclic loading (fatigue)and have lower fatigue sensitivity if compared toconventional WC-based hardmetal. The aim is to investigatethe effect of residual stresses on surface fatigue of TiC-based cermets.(3889)

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Chair: A. Tasdemirci

Failure analysis of curved compositepanels based on first-ply and bucklingfailuresS. Adali, I. U. CagdasFailure of curved panels by buckling or excessive stress isan important design consideration. In the present studyeffect of fiber orientation is studied on the failure loadof a laminated panel subject to uniaxial compression. Thepanel is taken as an angle-ply plate and the failure loadis maximized to determine the optimal stacking sequence.(3169)

Fatigue characteristics of small radiuspipe fabricated by pipe bending withinduction local heatingY.S. Lee et al.To verify confidence of bended pipe, fatigue propertieswere investigated for the bended pipes with small radius ofcurvature of 1.5~2.0R. Two bended sections, which wereextrados and intrados region, were compared with as-received section about microstructure, hardness, high cyclefatigue. Carbon steel showed better fatigue characteristicsat bended section than at as-received pipe.(3956)

Electric properties of Holmiumsubstituted SrBi4Ti4O15 ceramic for HighTemperature Piezoelectric ApplicationsP SarahSrBi4-xHoxTi4O15 (x=0.00, 0.02, 0.04 and 0.06) (SHBT-x) areprepared. Studies of electromechanical coupling factor,dielectric constant and dielectric loss with temperature atdifferent frequencies have been carried out. Introductionof Holmium increased the Curie temperature of SrBi4Ti4O15thus making this ceramic suitable for sensor applicationsat higher temperatures.(3466)


Chair: A. Bernasconi

Mechanical Behaviour of PolypropyleneReinforced with Sugarcane Bagasse FibersCompositesE. F. Cerqueira, C. A. R. P. Baptista, D. R. MulinariIn this paper was evaluated the effect of chemicalmodification on mechanical properties of sugarcane bagassefiber/PP composites. These fibers were mixed with thepolypropylene in a thermokinetic mixer, and compositionswith 5 to 20 wt% of fibers were obtained. The mechanicalproperties were evaluated by means of tensile, 3-pointbending and impact tests.(3185)

Effect of chemical Modification onMechanical Behaviour of PolypropyleneReinforced Pineapple Crown FibersCompositesB. L. S. Sipião et al.In this work the effect of treatment in the pineapplefibers from crown reinforced with polypropylene wasinvestigated. Furthermore, it was evaluated theperformance of modified pineapple fibers from crown asreinforcement in polypropylene for impact tests. Resultsrevealed that the treatment proposed on fibers surfaceimproved the impact strength of composites.(3158)

An inverse problem for thecharacterization of dynamic materialmodel parameters from a single SHPB testC. Hernandez et al.This paper presents the formulation and solution of a firstclass inverse problem for the determination of the Cowper-Symonds material model parameters from a single SHPB test.The inverse problem is formulated as an optimizationprocedure in which a real coded genetic algorithmdetermines the optimal set of material constants.(3193)

Red RoomFatigue 2

Chair: H. Pinto

Influence of casting defects on fatiguecrack initiation and fatigue limit ofductile cast ironL. Collini et al.The fatigue behaviour of a highly defected ductile iron isexperimentally studied on a set of specimens extracted fromcastings. Specimens are non-standard in order to maximisethe volume, promoting the crack initiation from a defect.Fracture surfaces are examined and initiation sitescharacterized. The fatigue crack propagation is simulatedusing with the VCCT, to assess whether the fatigue strengthis dominated by the propagation phase.(4234)

Fatigue life prediction of notchedcomponents: a comparison between thetheory of critical distance and theclassical stress- gradient approachD. Castagnetti et al.The paper correlates the classical stress-gradient approach(Siebel, Neuber and Petersen) with the modern theory ofcritical distance (Tanaka and Taylor). A relationshipbetween the material parameter rho* and the criticaldistance L of the TCD is provided and used to compare themethods on three case studies.(3576)

Fatigue behavior of notched Ti-6Al-4V inair and corrosive environmentS. Baragetti et al.The fatigue behavior (R = 0.1) in air and NaCl solution ofnotched Ti-6Al-4V flat samples was studied. Different Ktvalues up to more than 13 were investigated. A step-loadingmethod was used to generate data points on alternatingstress vs. Kt diagrams for a constant life of 200,000cycles.(3261)

Green RoomCreep and temperature behaviour

Chair: M. Kvapilova

Effect of Boron on Microstructure andCreep Strength of Advanced FerriticPower Plant SteelsF. AbeBoundary and sub-boundary hardening is shown to be the mostimportant strengthening mechanism in creep of 9% Cr steelat 650 oC. The enhancement of boundary and sub-boundaryhardening by fine precipitates retards the onset ofacceleration creep, which decreases the minimum creep rateand improves the creep life.(2862)

Magnetic testing of creep deteriorationI. Meszaros, J. GinsztlerThe creep damage of ferritic power plant steel(1Cr-0.5Mo-0.25V) was studied by magnetic measuringtechnique. A novel data evaluation technique was presentedwhich is based on the hyperbolic model of magnetization.The variation of magnetization curves due to creep wasmeasured and the relation between creep damage and themagnetic property changes were discussed.(2977)

Creep Damage Evaluation for HAZ of Mod.9Cr-1Mo Steels under Multi-Axial StressConditionsK. Yoshida, M. YatomiIn this study, circumferentially notched bar creep rupturetests have been conducted using simulated HAZ specimens of9Cr steels in order to examine the effect of multiaxialstress state on creep rupture and damage. Finite elementpredictions based on ductility exhaustion approach has beenapplied to predict the creep rupture and the creep damagein notched specimens.(3850)

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18:10-18:30


Chair: K. Findley

Modelling the Growth of LT and TL-Oriented Fatigue Cracks inLongitudinally and Transversely pre-strained Al 2524-T3 alloyL.P. Maduro et al.The fatigue crack growth behavior of 2524-T3 alloy wasinvestigated and modeled with an exponential equation,regarding the influence of load ratio, pre-strain and crackplane orientation. Tests were performed at three distinctload ratios. Tested material conditions were: as received,pre strained longitudinally and transversally in relationto rolling direction.(3694)

Mixed Mode I/II Brittle FractureEvaluation of Marble Using SCB SpecimenM.R. Ayatollahi, M.R.M. AlihaMixed mode fracture tests were conducted on Harsin marbleusing cracked semi circular bend (SCB) specimens. Theexperimental results were not consistent with the classicalmixed mode brittle fracture criteria. It was demonstratedthat the low fracture resistance of the tested rock wasmainly due to the influence of large positive T-stressesthat exist in the SCB specimen.(3183)

Mixed Mode 3D Stress Fields and CrackFront Singularities for Surface FlawV.N.Shlyannikov, A.V. TumanovThe elastic-plastic stress fields for semi-ellipticalsurface cracks on biaxial loaded plates have beeninvestigated using detailed three-dimensional finiteelement calculations. Combining analytical solutions and3D finite element calculations, the elastic crack tipsingularity for a surface semi-elliptical crack have beenobtained along the crack front for three main cases ofmixed-mode loading.(3476)

Navy Blue RoomDynamic behaviour

Chair: G. Previati

Accurate Formula for Determination ofNatural Frequencies of FGM Plates Basingon Frequencies of Isotropic PlatesE. EfraimAn empiric formula that gives accurate correlation betweennatural frequencies of plate made of functionally gradedmaterial and those of isotropic ones made of containingmaterials with different Poisson ratios is derived basingon investigation of tendencies in frequency variation dueto different volume fraction of constituent materials andconsidering types of vibrational modes.(3778)

Fatigue damage identification by meansof modal parametersF. Curà, A.E. GallinattiObject of the paper is an experimental investigation abouthigh cycles fatigue damage and corresponding variation ofmodal parameters (internal damping and resonance frequency,measured by a modal analysis technique) in steel specimens.Moreover, infrared thermography has been used to emphasizethe specimen thermal emission and the related damagephenomena.(3349)

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Violet RoomSurface engineering 1 (organized by M.Guagliano and C. Rodopoulos)

Chair: M. Guagliano

A fracture mechanics based approach topredict fatigue life of scratch damagedshot peened componentsR.A. Claudio et al.This work presents a methodology to predict the fatiguelife and non-propagating cracks of scratch damaged shotpeened components. The total fatigue life is obtained byadding initiation life, with crack propagation life. Themethod is quite reliable for predicting both fatigue lifeand non-propagating cracks of scratch damaged shot peenedcomponents.(3448)

Eigenstrain modelling of residualstresses generated by laser shockpeeningM. AchinthaAn eigenstrain analysis of residual stresses (RS) generatedby laser shock peening is presented. The RS distribution isobtained by incorporating the stabilised plastic straindistribution extracted from an explicit finite element (FE)analysis as a misfit strain distribution in a quasi-staticFE model.(3331)

The effect of residual stress on the SCCusing ANSYSJ.-y. Nam et al.SCC is a key issue in the nuclear industry. When weldingthe pipe, heat-input occurs to the trend of thermal stress.And heat input affected residual-stress to the pipe. Inthis study, the effect of residual-stress for the SCC inthe piping was determined. Experimental method is fourkinds of specimens are produced to SCC. ANSYS analyze theresidual-stress for the specimen. so Ascertain the effectof residual-stress to SCC(3371)



Mechanical Characterization of SilicaReinforced-PTFE Matrix CompositesS.A. Martins et al.The objective of this work is to characterize apolytetrafluoroethylene (PTFE) matrix composite with silicaparticle inclusions. The methodology consists ofinvestigating its mechanical behavior and correlating theexperimental results with a viscoelastic model. Thebehavior of PTFE-silica composite is compared with thebehavior of the PTFE without silica particles.(3413)

Evaluation of stitched fabric compositeprocessed by RTM in quasi-static testM.Y. Shiino, M. O. H. Cioffi, H. J. C. VoorwaldStitched fabrics have been widely studied for potentialapplication in aircraft structures. The dry stitched carbonfabric preform has mainly been used in the Resin TransferMolding (RTM) process. The purpose of this research workfocused on testing in quasi-static mechanical mode (in-plane tension). The evaluation consisted in comparing thescatter of the quasi-static test with the attenuation ofultrasonic maps.(3368)

Analysis of Damage Events in Quasi-isotropic Laminates Using A GeneralizedMicromechanics ApproachH. Hosseini-Toudeshky, A. Farrokhabadi, B. MohammadiIn this paper, the developed micromechanics approach isemployed for the parametric analyses of four quasiisotropic laminates with under axial loadings to calculatethe energy release rate due to the transverse cracking andinduced delamination and to examine the order of damagehappening in each laminate separately. The obtained resultswill be compared with available experimental results.(3810)

Wednesday 8th


Bio-Inspired Lightweight Structural Materials

R. O. Ritchie

9:00 – 13:00 Lectures

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09:00-09:20

09:20-09:40

09:40-10:00

10:00-10:20

Yellow RoomMechanics of Short Fiber ReinforcedPolymers 2 (organized by A. Bernasconiand F. Meraghni)

Chair: F. Meraghni

Viscoelastic material behaviour of PBT-GF30 under thermo-mechanical cyclicloadingM. Pierantoni et al.This paper deals with the simulation of the behaviour of ashort glass fibre reinforced polybutylene terephthalate(PBT-GF30) under thermo-mechanical cyclic loading. The maingoal of the work is to model the stress during TMF cyclesand assess the performance of a linear viscoelasticmaterial model. The stress-time trend during TMF tests isdiscussed, comparing the simulated versus the experimentalstress results.(4247)

Discontinuous FE and lattice models todescribe cracking behaviour in fibre-reinforced brittle materialsR. Brighenti et al.The behaviour of quasi-brittle materials is computationallydifficult due to the nonlinear behaviour produced byfracture failure. Reinforcing fibres allows to overcome theabove drawback. Fibre-Reinforced materials are analysed bya discontinuous FE and a physically-based lattice model.The main phenomena (crack formation-propagation, fibrebridging, debonding) are simulated by the above models.(3804)

Analysis of the dependence of thetensile behaviour of a short fibrereinforced polyamide upon fibre volumefraction and orientationA. Bernasconi, F. CosmiDifferent grades of short fibre reinforced polyamides wereanalyzed, having different content of glass fibres. Basedon fibre length distributions the tensile behaviour of thedifferent materials was modelled. The effect of the fibrecontent on the fibre orientation distribution was discussedon the basis of the analysis of the reconstructions of theinternal fibre structure by micro tomography.(4030)

Model of the mechanical response ofshort flax fiber reinforced polymermatrix compositesJ. Modniks, J. Andersons(3074)

Orange RoomElastomeric materials: structuralstudies and mechanical aspects(organized by C. Prisacariu)

Chair: C. Prisacariu

Keynote - New Developments inThermoplastic Polyurethanes of VariableCrystallinity: Sensitivity of CyclicStress-Strain Response to ChemicalStructureC. Prisacariu, E. ScortanuA study was made of how aspects of the mechanical responsesof thermoplastic polyurethane elastomers vary withcomposition. Materials consisted of hard segments based onhard segments of variable geometries. The physicalstructures were characterized by dynamic mechanicalanalysis and by X-ray scattering (SAXS and WAXS).(2867)

Characterization of Carbon-blackReinforcing Network According toElectrical Conductivity of CompositesI. Chodak, J. KrajciElectrical conductivity was measured on line duringmechanical deformation of composites SBR orpolycaprolactone filled with conductive carbon blacks. Theobtained values were compared with mechanical stress straincurve. Observed changes of electrical current correspond tocertain features on stress strain curve such as Hookeanreversible deformation or yield point.(3670)

Identification of local constitutivemodel from micro-indentation testingV. Le Saux et al.In this paper, load/displacement curves obtained at amicro-scale are used to identify the parameters of anhyper-elastic model. The protocol proposed is coupling FEsimulations achieved with Abaqus with optimizationprocedures using specific software. The identifiedparameters are finally used to simulate macroscopic testsand successfully compared to the experimental data.(3037)

A visco-hyperelastic constitutivedescription o elastomer behaviour athigh strain rateH. Pouriayevali, Y.B. Guo, V.P.W. ShimA visco-hyperelastic constitutive model is established todescribe the large deformation response of incompressibleelastomeric materials at high strain rates. Instead ofemploying constant relaxation-times, the relaxation-time isdefined by a deformation-dependent function. The model isused to describe the stress-strain responses of SHA60rubber and Nylon-6 over a range of strain rates.(3117)

Red RoomBiomimetic and biomaterials (organizedby F. Cosmi)

Chair: F. Cosmi

Finite Element Analysis of MechanicalBehaviors of Coronary StentN. Eshghi et al.The aim of the present work is to investigate the expansioncharacteristics of a certain stent as it is deployed andimplanted in an artery containing a plaque. This modelincludes the internal pressure of blood. Stressdistribution, outer diameter changes, and bending areinvestigated using a commercially available software.(3015)

In-plane elastic properties ofhierarchical cellular solidsQ. Chen, N. M. PugnoIn this paper, we analytically calculate the in-planelinear-elastic properties of a new class of bio-inspirednano-honeycomb materials possessing a hierarchicalarchitecture. Incorporating the surface tension, peculiarof the nano-scale, modifications of the classical resultsfor macroscopic and nonhierarchical honeycombs areproposed. Finally, a parametrical analysis reveals theinfluences of relative density and of two key geometricalparameters on the overall elastic properties.(2874)

Impact of the dynamic culture conditionin the RCCS bioreactor on a three-dimensional model of bone formationN. Steimberg et al.The dynamic RCCS™ bioreactor is a new efficient systemdevised to perform long-term 3D culture of cells and tissueexplants. Here we evaluated the impact of theRCCS™-produced hydrodynamic condition on an innovative 3Din vitro model of bone morphogenesis, obtained by couplingprimary human osteoblasts with BCP ceramic particles.(3916)

Failure of Mineralized CollagenMicrofibrils Using Finite ElementSimulation Coupled to Mechanical Quasi-brittle DamageA. Barkaoui, A. Bettamer, R. HambliBone is a materiel of which principal function is tosupport the body structure and to resist mechanical loadingand fractures. Bone strength does not depend only on thequantity and quality of bone which is characterized by thegeometry and the shape of bones but also on the mechanicalproprieties of its compounds,which have a significantinfluence on its failure.(3640)

Green RoomComposites 2

Chair: J. Vina

Fatigue Properties of Borosilicate GlassCoated with Ceramics and Effect of Prooftesting on Life DistributionT. Hoshide,M. TanakaBorosilicate glass was coated with alumina or siliconcarbide thin films by sputtering method. Fatigue tests ofcoated glass revealed that the fatigue strength wasimproved by coating ceramic thin films. Although largescatter was observed in life distributions, the prooftesting was effective as a screening procedure.(2894)

Damage Progress in Metal/Fiber-Reinforced Polymer Structures withdifferent viscoelastic interfacegeometriesN. Konchakova, R. Mueller, F.J. BarthThe damage progression in lightweight engineeringstructures, like aluminum/fiber-reinforced polymer joints,is studied. The contact area is computed by means of aninterface material. A viscoelastic model with the Lemaitre-type damage is applied. The present work contains thenumerical analysis of fracture and damage resistance ofspecimens with square, circle and moon-like geometry of thejoint.(2951)

Off-Axis Properties of Cross-Ply MetalMatrix Composites at Quasi-Static andHigh Strain RatesI. W. Hall, A. Tasdemirci, A. KaraCross-ply metal matrix composite were tested at quasi-static and high strain rates over a range of angles. High-speed photography and a numerical model based on thecommercial finite element code LS-DYNA were used toinvestigate the fracture behavior. Experimental results arecompared with those of the theoretical model.(3014)

Aluminium Based High Thermal ConductiveComposites Containing CNT and VGCF -Deformation Dependence of ThermalConductivityK. Fukuchi et al.This paper treats aluminium (Al) based compositescontaining vapor-grown carbon fibers (VGCF) and carbonnanotubes (CNT) having high thermal conductivity. Thedependence of the deformation on the thermal conductivityand the strength of the composite at several temperaturesare clarified both experimentally and theoretically.Simulations reasonably explain the deformation dependencesof the thermal conductivity of composites.(3056)

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10:00-10:20

Light Blue RoomExperimental mechanics 1

Chair: I. Cerny

Damage monitoring in pressure vesselsand pipelines based on wireless sensornetworksW. Hufenbach et al.This article discusses the scientific-technical issues thatarise during the development of intelligent damagemonitoring systems for pressure vessels and pipelines madeof GFPR composites. This includes the sensor networkdesign, the sensor integration during manufacturing and thecorrelation between the relevant damage mechanisms and thesensor signals.(2870)

Observation of Magnetic Flux DensityDistribution around Fatigue Crack andApplication to Non-DestructiveEvaluation of Stress Intensity FactorH. Tanabe et al.The changes in the magnetic flux density around fatiguecracks during their propagation process were observed. Astrong correlation between the movements of the magneticflux density distribution and stress intensity factor wasrecognized, regardless of the loading conditions. Thisresult suggests that non-destructive evaluation of thestress intensity factor of fatigue cracks would be possibleusing this relationship.(3214)

A New Technique for Evaluation of StressIntensity Factor Based on ThermoelasticStress MeasurementY.Izumi et al.(3245)

Observation of Fatigue Crack PropagationBehavior under Torsional Loading byUsing Synchrotron Radiation Micro-CTImagingD. Shiozawa et al.Synchrotron radiation computed tomography imaging ofSPring-8 was applied to the observation of the torsionfatigue crack propagation behavior. The torsion fatiguetests and measurements of SR micro-CT were carried outalternately. The shape of torsion fatigue cracks could beevaluated quantitatively and nondestructively. Thecondition of transition of crack propagation was discussedby using three-dimensional shape of cracks.(3394)

Navy Blue RoomUncertainty and statistical methods inmechanical behaviour of materials(organized by J. Evans)

Chair: L. Trilling

Variability in the Mechanical Propertiesand Processing Conditions of a HighStrength Low Alloy SteelG. W. Bright et al.Variability in the mechanical properties of strip steel maybe due to numerous factors, including changes in chemistryand rolling conditions. By using tree based classificationmodels, the statistical distribution of mechanicalproperties could be determined and predicted by identifyingkey input criteria.(2948)

Mesoscopic Variance of DislocationDisplacements in Crystalline MaterialsB. V. PetukhovIt is shown that large variance of dislocationdisplacements found experimentally and its long relaxationto steady value in crystals can be explained by stochasticnature of dislocation-kink formation. This stochasticnature results in development of dislocation-line roughnessdescribed by scaling relations, including mesoscopic timeand space scales.(2969)

Determination of System StructuralReliability Considering Uncertainty inCharacterization of Component StrengthDistributionsL. H. TrillingWhen using structural reliability methods, strengthdistributions are usually derived from limited coupontesting. This paper presents a methodology for developingparameters for a coupon test program that will demonstratecompliance with allocated probability of failure andconfidence level requirements for a structure with a largenumber of bonded joints.(3058)

Extreme value statistical analysis todetermine the endurance limit of a 1045induction hardened steel alloyA. B. Nissan, K. O. FindleyThe effect of inclusion populations on fatigue performanceof induction hardened steel was examined. Extreme valuestatistical analysis was used to estimate the largestinclusion in an area, then a fracture mechanics-based modelwas used to estimate the endurance limit. The predictedand experimentally measured endurance limits were found tobe closely correlated.(3061)

Violet RoomNanocomposites

Chair: B. Stronge

Fabrication and mechanical properties ofmagnesium matrix composite reinforcedwith Si coated carbon nanotubesY.-H. Park et al.In this study, it is investigate magnesium matrixcomposites reinforced with multi-wall carbon nanotubes thathave been coated with Si in order to improve thewettability. Silicon powder has been effectively coated onthe surface of MWNTs and well covered and continuous.(3113)

The Microstructural Effects on theMechanical and Thermal Properties ofPulsed Electric Current Sintered Cu-Al2O3 CompositeR. Ritasalo et al.The influences of the microstructure on the mechanical andthermal properties of pulsed electric current sintered(PECS) Cu-Al2O3 composites were investigated. Thedifference in hardness and thermal stability wereattributed to distribution and size of Al2O3-particles. Theresults show that by PECS dense high quality Cu-Al2O3composites can be produced.(3156)

New generation of ecological silicatebindersI. Izdebska-Szanda, A. BalinskiThe article presents the structural, technological andecological feature of the new kind of the silicate binders.The results of comparative chromatography research of thethermal emission of harmfull gases and odors emanating fromthe moulding sands with new silicate binders and organicbinders, was also characterized.(3290)

Dynamic-Mechanical Behavior andMorphology of Polystyrene/PerovskiteComposites: Effects of Filler SizeP. Russo et al.Melt blended composites based on a commercial gradepolystyrene resin containing 5 wt% of non commercialperovskite particles were analyzed by dynamic-mechanicaltests and electron microscopy. Results showed betterperformance for nanofilled systems with respect to onescontaining microparticles. A satisfactory level of fillerdispersion was revealed for all investigated compounds.(3409)

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11:20-11:40

11:40-12:00

12:00-12:20


Chair: A. Bernasconi

Innovative Sandwiches for CivilApplicationsV. Lopresto et al.Physics and mechanical tests were carried out on innovativesandwiches. The core was obtained by embedding shortmineral fibre, in different percentages, in polyurethanematrix. The results of the experimental tests were comparedto what obtained on sandwiches made without anyreinforcement: better behaviors were found in terms ofmechanical properties and thermal conductivity too.(3266)

An Integral Design and ManufacturingConcept for Crash Resistant Textile andLong-Fibre Reinforced PolypropyleneStructural ComponentsW. Hufenbach et al.An efficient and reliable structural combination ofcontinuous and long glass fibre reinforced thermoplasticcomposite material is of high interest especially forautomotive crash applications. A seat pan is chosen as anexemplary structure to illustrate the main aspects of anintegrated design and manufacturing concept.(3619)

Fatigue damage modelling of PEEK shortfibre compositesA. Avanzini, G. Donzella, D. GallinaFatigue damage evolution of a PEEK based composite wasstudied by carrying out fatigue tests in load control atdifferent stress level. Different fatigue damage kineticsexperimentally observed as a function of applied stresswere reproduced by means of a fatigue damage model whichwas implemented into a finite element code by means ofcustomized user subroutine.(3247)

Static Mechanical Properties of GFRPlaminates with wasted GFRP interleafY. Aono, S. Murae, T. KuboWaste GFRP was divided into short glass fibers and resinfragments by milling. We examined the aptitude of the chipsof waste GFRP for interleaf materials of unidirectionalcomposite laminates. Shear support and fiber bridging bythe interleaf seemed to improve the tensile strength ofcomposite laminates.(3598)



Stress-based formulation non-linearbending analysis of anisotropic sectorplatesR.A.Alashti, S.Saadati, A.PaknahadIn this paper non-linear bending analysis of anisotropicsector plate is extended by developing stress-basedformulation. The governing equations include a system ofthirteen partial differential equations that are in termsof stress resultants. Forces and moments with assumingshear stress relations have parabolic distribution.(3191)

Environmental considerations of plasticbehaviors for automobile applicationsY. K. KimMechanical properties of thermoplastic materials underenvironmental effects were investigated by experimentalapproaches. Samples were treated under temperature andhumidity variations, and the properties such as Young'smodulus, Poisson's ratio, coefficient of thermal expansionand dynamic properties were periodically measured. Thetrends of the property changes were studied to analyze thevariation effects.(3239)

Rheological Characterization of Clay-Polyester CompositesB.Abu-Jdayil et al.In this study, the rheological behaviour of bentonitedispersed in polyester was investigated. Herschel-Bulkleymodel and Structural Kinetic model were used to describethe dependence of the apparent viscosity of the compositeon shear rate and shearing time, respectively. The effectsof the filler/polyester ratio and filler size on therheological properties of the composite were studied.(3547)

Compressive Creep Behaviour of AsphaltMixturesH. TaherkhaniThe steady-state deformation behaviour of two types ofasphaltic mixtures have been studied. Uniaxial creep andconstant strain rate tests have been conducted over a rangeof stress levels, strain rates and temperatures, andtriaxial creep tests have been conducted over a range ofdeviatoric stress levels and confining pressures.(3563)


Chair: F. Cosmi

Fiber-reinforced Polymer Composites withEnhanced BioactivityY.E. Greish, A.-H. I. Mourad(3699)

Superelasticity and Self-Healing ofProteinaceous BiomaterialsR. Kazakeviciute-Makovska, H. SteebA theory to describe the mechanical behavior ofproteinaceous biomaterials such as the whelk egg capsulebiopolymer (WECB) is proposed. It provides a relationshipbetween macroscopically observed mechanical properties ofWECB and physical mechanisms of the α-helix -β-sheet phase transition. This theory models thecomplete recovery of deformation (superelasticity) andcomplete recovery of stiffness (self-healing) observed forWECB.(3355)

Analysis of Dilatation in a MultilayeredSpherical HydrogelM.S. Wu, D. WangThe stresses and displacements in a dual-layer sphericalhydrogel subjected to a constant dilatation in the outerlayer are derived analytically using a second-ordernonlinear elasticity model. The results show theimportance of nonlinearity, and suggest that the swellingand the interfacial radial or tangential stresses can besignificantly moderated by a judicious choice of theelastic constants of the two layers.(3236)

Development of dense and cellular solidsin crcomo alloy for orthopaedicapplicationsS. Rivera, M. Panera, F. J. Belzunce(3622)


Chair: T. Hoshide

Fatigue Design Optimization of SafetyComponents Made of SMCJ. Fleckenstein, K. Jaschek, A. Bueter. N. StoessWhich influences have different fibre orientations andfibre contents on fatigue strength behaviour of SheetMoulding Compound? Results of fatigue cycle tests andhysteresis measurement with flat specimens made of long-fibre reinforced thermosetting SMC, a concept for fatiguedesign optimization and estimation of the service life forcyclically loaded components will be shown.(3097)

Damage analysis and monitoring ofcomposite materials and structures undercyclic loadsA. Muc, P.Kedziora, Z. KrawiecThe fatigue damage progress is analyzed both theoretically(FE modeling) and experimentally . Since the cyclic loadingcauses damage, reducing the strength until the material canno longer sustain even the service loading, the theoreticalanalysis is associated with the definition of the damageparameter corresponding to the stress criterion in the formproposed by Tsai and Wu.(3278)

Numerical and experimentalinvestigations of the global and localbehaviour of an Al(6061)/Al2O3 metalmatrix composite er low cycle fatigueY. Schneider et al.The deformation behaviour of an Al(6061)/Al2O3 compositewas experimentally and numerically investigated under LCF.The fatigue damage initiation and development are studiedon the specimen surface and in the bulk material. Thethree-dimensional FE model based on microtomographic datais loaded up to 100 cycles, where the matrix behaviour isdescribed by a Chaboche-type model.(3521)

Damage development of Al/SiC metalmatrix composite under fatigue, creepand monotonic loading conditionsA. Rutecka et al.A consolidation of powders using the KOBO method waselaborated for production of Al/SiC (MMC). The forcecontrolled high cycle fatigue tests, tensile creep tests,monotonic tensile tests and microstructural observationswere carried out. An initial rate of fatigue damageparameter increase becomes greater and magnitudes of themean strain decrease for higher content of the SiCparticles.(3688)

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Chair: H. Palkowski

Strain fluctuations from DIC techniqueapplied on paper under fatigue or creepA. Miksic et al.We study the evolution of deformation during fatigue andcreep experiments on quasi 2D samples of standard copymachine paper. The main tools of investigation are acousticemission (AE) -based analysis and digital image correlation(DIC). The issue is to predict the break by looking at thesample-to-sample variation and by comparing experiments.(3455)

Fields of Energy Storage Rate in Area ofPlastic Strain Localization duringTensionW. Oliferuk, M. MajThe work is devoted to the new method of determination ofthe energy storage rate distribution on the surface of thedeformed specimen. The method is based on the experimentalprocedure for the simultaneous measurements of temperature,and displacement distributions. This procedure involves twoimaging techniques: infrared thermography and CCD in therange of visible light.(3603)

T-WiEYE: An early-age concrete strengthdevelopment monitoring and miniaturizedwireless impedance sensing systemC. P. Providakis, E.V. LiarakosThis paper presents the development of a new activewireless USB sensing system that consists of a miniaturizedelectromechanical impedance measuring chip and a reusablepiezoelectric transducer appropriately installed in aTeflon-based enclosure to monitor the concrete strengthdevelopment at early ages and initial hydration states.(3690)

Study of Plastic Strain LocalizationUsing CCD and IR Thermography TechniquesM. Maj, W. OliferukThe paper is devoted to study of the evolution of plasticstrain localization during uniaxial tension using CCD andIR thermography techniques. As indicators of the onset ofplastic strain localization both non-uniform strain fieldand non-uniform distribution of the surface temperature ofthe specimen were used.(3738)


Chair: L. Trilling

Numerical modelling and strengthprediction of welded double lap jointsmade of timberT. Vallée et al.This paper summarizes experimental and numerical results onwood-welded joints, suggesting an experimental method tocharacterize the strength of the welded interface, in theform of a strength prediction method. Lastly, experimentaland numerical results are compared, which allows for avalidation of the suggested approach.(3272)

Comparison of Artificial Neural Networkand Multiple Regression AnalysisTechniques in Predicting the MechanicalProperties of A356 AlloyD. Emadi, M. MahfoudThe mechanical properties of aluminum alloys are controlledby alloy’s composition, melt treatment, casting and heattreatment variables. Multiple Regression analysis andArtificial Neural Network (ANN) models were developed topredict the casting properties. It was shown that theproperty predictions by ANN model were more accurate thanregression models.(3510)

Reliability analysis of slope Stabilityusing stochastic finite element methodK. Farah ,M.Ltifi, H.HassisThis paper deals with the reliability analysis of slopestability with spatial variability of soil properties.Using SFEM (Stochastic Finite Element Method) and the limitequilibrium method , an optimization strategy is performedto look for critical slip surface of the slope.(3872)

Statistic Characteristics of FatigueProperties in Magnesium AlloyS.Mohd et al.Scatter characteristics of fatigue limit, fatigue life andtensile strength for magnesium alloy were investigated.From the results, it can be concluded that scatter offatigue limit is small and almost coincides with that oftensile strength, while scatter of fatigue life issignificantly large compared to those of fatiguelimit and tensile strength.(3939)


Chair: M. Zappalorto

Percolation and Film Formation Behaviorsof MWNT/PS NanocompositesS.Ugur, O.Yargi, O.PekcanWe have reported the film formation and conductivity ofPS/MWNT composites. Below 10 wt% MWNT content, two distinctfilm formation stages were observed. The conductivity ofcomposite films increased dramatically above a certainfraction of MWNT (4 wt%) following the percolation theory.The conductivity scales with the fraction of MWNT as apower law predicted by percolation theory.(3488)

Synthetic Growth Concept: an algorithmicmethod for modeling the structure andproperties of inherently nano-structuredmaterialsG. Gueorguiev, S. StafströM, L. HultmanWe propose an original DFT-based concept for predictivesimulations of nanostructured materials – the SyntheticGrowth Concept (SGC) understood as structural evolution bysequential steps of atomic rearrangement where each step isassigned according to previous relaxed states. By SGC wedeveloped a new class of carbon-based materials -Fullerene-Like C:N:P:F:S:Se compounds.(3548)

Thermoresistant Nano-filled Glass-ceramicsV.P. Maslov, Y. M. Rodichev, N.F.TregubovIt is known that replacing micropartical by nanopartical ina composit formulation results in improved physicalproperties. The authors investigated the possibility addingof nanoparticles SiO2 and TiO2 in an amount of 10-30% inthe slurry to produce glass-ceramics. As a result of theresearch found that the adding of nanoparticles in theslurry increases the density of the structure, improves thephysical properties and provides high stability of glass-ceramics.(3623)

In-situ SEM micropillar compression -Room temperature ductile to brittletransition in InPR.Ghisleni, J.Michler(3612)

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Chair: F. Meraghni, A. Bernasconi

Symposium final discussion

(101010)

Symposium final discussion

(101010)

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Study of mechanical behavior oflightweight aggregates concrete ofTunisian clayN.Salem ,M.Ltifi, H.HassisWe treated the mechanical behavior of lightweight concretewith Tunisian clay aggregates, shaped and expanded in thelaboratory. For current cement content, we determined thecompressive strength at 3, 28 and 90 days. The obtainingconcrete is a structure concrete according to the AFNORnorms and the ACI Guide.(3781)

Experimental study of the effect ofaddition of nano-silica on the behaviorof pastes and cement mortarsM. Ltifi et al.The properties of cement mortars with nano-SiO2 wereexperimentally studied. The amorphous or glassysilica,which is the major component of a pozzolan, reacts withcalcium hydroxide formed from calcium silicate hydration.The rate of the pozzolanic reaction is proportional to theamount of surface area available for reaction. Therefore,it is plausible to add nano-SiO2 particles in order to makehighperformance concrete.(3867)

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Chair: F. Cosmi

The Damage and Healing of Bone in theDisuse State Under Mechanical andElectro-magnetic LoadingsC. Y. Qu, S.W. YuAbstract: We establish a mechanism-based damage model torationalize the damage evolution law of bone undersimultaneously applied mechanical and electromagneticfields. The bone damage and healing under disuse status aresimulated based on the new damage model. Then the numericalexamples of the influences of mechanical and electro-magnetic fields on damage and porosity of bone arecalculated.(4128)

Geometry and size effects in the designof biomimetic materials: Modeling andexperimentsP.Zavattieri, H.Espinosa(3926)

Wrinkling instability and itsapplications: From biomimetic tiltedpillars to optics gratingM. W. Moon, A. VaziriWe will present several novel techniques for polymersurface engineering, including creation of controlledhierarchical patterns and wrinkles with highamplitude/wavelength aspect ratio. The applications ofthese techniques in microfluidics, optics, and also indevelopment of biomimetic surfaces will be discussed.(4138)

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Chair: T. Hoshide

Investigation of the wear behavior ofB4C reinforced Fe/Co matrix compositesproduced by hot pressK. E. Oksuz, M. Simsir, Y. SahinDiamond tools are widely used for sawing, drilling andgrinding materials. In this experimental study, diamondimpregnated in Fe-Co matrix are processed by powdermetallurgy method using hot pressing technique. The effectsof Fe and boron carbide (B4C) additions on characteristicof diamond impregnated Co matrix composites have beeninvestigated.(3766)

Multi-scale constitutive model for awood-inspired compositeE.I. Saavedra Flores et al.This paper proposes a fully coupled multi-scale finiteelement model for the mechanical description of a newcomposite material inspired in wood cell-walls. Theconstitutive response of the composite is described bymeans of a RVE in which the fibre is represented as aperiodic alternation of rigid and soft portions ofmaterial. Numerical tests demonstrate substantial gains inresistance to failure, toughness and in the control of theflexibility/stiffness balance in the material.(4607)

A bio-inspired design criterion fordamage-resistant multilayered materialsO. Kolednik et al.A composite with thin, soft or compliant layers can havemuch higher fracture resistance than the homogeneousbrittle material. The basic mechanism is the strongdecrease of the crack driving force when the crack entersthe soft layer. The improvement in fracture strength by thesoft layers is assessed, and a simple criterion is derivedfor the design of defect-tolerant resistant man-madematerials.(2921)

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12:20-12:40

12:40-13:00

13:00-13:20

13:20-13:40


Chair: H. Palkowski

Experimental analysis of crack tipfields in rubber materials by 3D DigitalImage MethodH. Song, Y. Kang, X. XiaoThis paper presents the application of 3d digital imagecorrelation to determine the crack tip fields in rubbermaterials under Mode I loading. According to the out-of-plane deformation measured by 3d digital image correlationand the in-plane displacement measured by digital moirémethod, a three-nested-deformation model is proposed todescribe crack-tip fields in rubber-like materials withlarge deformation.(4135)

Influence of the mode mixity ratio andtest procedures on the total energyrelease rate in carbon-epoxy laminatesV. Mollón et al.The fracture behaviour under modes I, II and different modeI/II ratios has been studied for a AS4/3501-6 carbon fibreepoxy resin laminate. FEM was used in order to analyzemodes I, II and mixed I/II and to compare the experimentaland numerical results.(3025)

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Chair: L. Trilling

An iterative method to obtain thespecimen-independent three-parameterWeibull distribution of strength frombending testsC.Przybilla, A.Fernandez-Canteli, E.CastilloA method to estimate the three-parameter Weibulldistribution function of fracture stress for a uni-axially,uniformly tensioned material element is proposed. Thevariable stress state present in bending tests is accountedfor, whereas discriminating between edge and surfacefailure results based on experimental observation is alsoconsidered in the assessment.(3959)

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Energy absorption capability ofnanomodified glass/epoxy laminatesF.Aymerich, M.QuaresiminThe paper illustrates the experimental investigation on thelow-velocity impact response of conventional and clay-modified glass/epoxy laminates produced by vacuum infusion.Results indicate a significant improvement in the energyabsorption due to nanomodification (up to 30%), incombination with a reduction of the peak force (10-15%).(3769)

Impact response of polyethylenenanocompositesI. Mohaghegian, G.J. Mcshane, W.J. StrongeThe quasi-static and dynamic behaviour of Linear LowDensity Polyethylene (LLDPE) and two LLDPE nanocompositeswere studied. Nanocomposites consisting of LLDPE filledwith 1% carbon black and 0.5% nanoclay fillers, by weight,were considered. Under quasi-static tensile loading, animprovement in the energy absorbing capability wasachieved by adding 1% carbon black fillers.(3874)

Plastic Yielding Around NanovoidsM. Salviato, M. Zappalorto, M. QuaresiminIn the present work, a model to assess the nanocompositetoughening due to plastic yielding of nanovoids ispresented. The model accounts for the emergence of aninterphase, created by the inter- and supra-molecularinteractions arising at the nanoscale, with mechanicalproperties different from those of the matrix.(3914)

Hardening of Alumina/W NanocompositesT. Rodriguez-Suarez et al.Diamond like hardening can be achieved on ceramic/metalnanocomposites by employing SPS as sintering technique(being the metal Ni or W). But, when SPSing W basedmaterials, problems arise concerning homogeneity inmaterials density, C diffusion and carbides formation. Apossible solution to avoid carbon diffusion is alsodiscussed in the present work.(3250)

Wednesday 8th

14:15 – 15:15 Plenary Lectures

Ethics in publications

K. H. Schwalbe

Nano-mechanics: Elasticity and Friction in Nano

Objects

E. Riedo

15.15 – 17:15 Poster session

Wednesday 8th

19.00 Gala Dinner in Villa Erba

Thursday 9th

08:30 – 16:50 Lectures

17:00 – 17:15 Closing Ceremony

Thu9

58

08:30-08:50

08:50-09:10

09:10-09:30

Yellow RoomNon-destructive evaluation of strainstress in material science

Chair: A. Carradò

Keynote - Non-destructive evaluation ofstrain-stress and texture in materialsscience by neutrons and hard X-raysH.-G.BrokmeierNon-destructive evaluations need experimental methods goingdeep inside compact samples. Both, neutron-radiation andhigh-energy X-rays (about 100keV) have a high penetrationpower in the cm-range to fulfil requirements for non-destructive investigations of residual stresses andcrystallographic textures. Newly installed materialsscience diffractometers are available for combinedanalysis.(3328)

Immersion ultrasonic technique forinvestigation of total welding residualstressF. Uzun, A. N. BilgeObjective of this study is the prediction of total residualstress and fusion boundary in three pass welded stainlesssteel plates. Immersion ultrasonic technique is used. Therelation between thermal stress and ultrasonic wavevelocity variations are investigated by using ultrasonicwave velocity measurements. This method provides apractical approach for residual stress measurements.(2879)

Measurement of applied strains in thinfilms deposited onto polymer bysynchrotron X-ray diffractionP.O. Renault et al.The paper will present the interest of combiningsynchrotron X-ray diffraction and digital image correlationtechniques to measure applied biaxial strains inpolycrystalline thin films. The measurements are performedin situ during biaxial deformation of W/Cu nanocomposites200 nm thick deposited on polyimide substrate.(3473)

Orange RoomSurface engineering 2

Chair: G. Donzella

High Strength Engineered Alumina-SiliconCarbide Laminated Composites by SparkPlasma SinteringV.M. Sglavo, F. De GenuaSpark Plasma Sintering was used to produce two engineeredlaminates in the SiC-Al2O3 system. These laminates aresensible stronger than parent monolithic composite and showlimited strength variability which can be associated to thestable growth of surface defects before final failure as itis predicted by the apparent fracture toughness curve.(3393)

Effects of processing parameters oncharacteristics of surface modifiedlayers generated by atmosphericcontrolled IH-FPP systemT. Fukuoka et al.We developed an atmospheric controlled IH-FPP treatmentsystem and examined the effect of processing parameters oncharacteristics of a modified layer by introducing thedesign of experiment. Moreover, in order to evaluate thecorrosion resistance of the treated surface,potentiodynamic polarization measurements were carried out.(3506)

Surface conditions and the fatiguebehavior of nodular cast ironR. Konecna, M. Kokavec, G. NicolettoSince fatigue life is largely a surface-controlledphenomenon, the use of as-cast specimen surfaces isexpected to give different fatigue strength from thatobserved for smooth specimens. The fatigue behavior ofpearlite/ferrite NCI specimens having different surfaceconditions, namely i) as-cast, ii) shot-blast and iii)fine-ground is discussed.(3313)

Red RoomComposites 3

Chair: A. Muc

Effects of fiber orientation of adjacentplies on the mode I crack propagation ina carbon-epoxy laminatesM. S. Mohamed Rehan, J. Rousseau, X.J. GongThis paper presents a study on the effects of variation ofply orientations at the crack surface, which utilizedmultidirectional DCB specimens that are designed so as toobtain an uncoupled quasi isotropic and quasi-homogeneouselastic behavior.(3639)

Evaluation of interfacial fracturetoughness and friction coefficient inthe single fiber fragmentation testE. Graciani et al.A novel technique is proposed for evaluating fracturetoughness and friction coefficient at the fiber/matrixinterface in glass/epoxy single fiber fragmentationsamples. Energy released during debond growth is determinedfrom the measurements of the debond and fragment lengthsusing numerical simulations in which the frictioncoefficient is parametrically varied.(3281)

Computational Modeling of CompositeInterfacesY.Li et al.The integrity of composites' adhesion depends on theinteractions associated with the chemical units. Themorphological structure at the interface and thecorresponding properties are investigated using MDsimulations, the morphology depends on the chemicalinteractions at the interface. This study is carried out tounderstand the structural parameters such as cross-linksand repeat units, density variation at the interface.(3948)

Green RoomMetallurgical processes

Chair: W. Bose Filho

Effects of k-carbides on MechanicalProperties in Ferritic C-Mn-Al Light-Weight SteelsS. Y. Han et al.Many efforts to reduce the weight of steel plates inautomotive industries have been conducted in order toincrease fuel efficiency and to decrease CO2 emissions.Recently, about 10 wt.% of Mn and Al has been added toautomotive steels to achieve the light-weight effect aswell as excellent strength and ductility.(3581)

Microstructural Changes of High-ChromiumFerritic Stainless Steel Subjected toCyclic Loading in 475C EmbrittlementRegionM. Akita, T. Kakiuchi, Y. UematsuThis study focuses on the microstructural changes of high-chromium ferrtic stainless steel subjected to cyclicloading in the 475°C embrittlement region. Type 447 wasaged at 520°C under both static and cyclic loadingconditions and the microstructure was analyzed using atransmission microscope (TEM).(2897)

Analysis of microstructural andmechanical properties of different boronand non-boron alloyed steels after beinghot stampedM. Naderi et al.In this research four high strength non-boron alloyedsteels as well as five boron alloyed steels were hotstamped using water and nitrogen cooling media.Microstructural analyses as well as tensile tests of hotstamped samples were performed and the results werecompared.(3700)

Thu9

59

08:30-08:50

08:50-09:10

09:10-09:30

Light Blue RoomPolymers

Chair: K. Jacob

Flexural Test On Recycled PolystyreneP. N. S. Schmidt et al.In socio-environmental scenario increased the natureresources concern. Recycling allows the reduction ofgarbage volume dumped in environment, saving energy anddecreasing the natural resources use. The recycling theexpanded polystyrene avoids that it is deposited sanitarylandfills or garbage dumps without control, their misuseand the obtainment from petroleum is reduced.(2943)

Ductile-Brittle Transition in Mechanismsof Slow Crack Growth in EngineeringThermoplasticsA. Chudnovsky, Z. Zhou, H. ZhangA transition in the mechanism and kinetics of slow crackgrowth (SCG) is observed at a temperature range much higherthan conventional Ductile-Brittle Transition Temperature.Such transition imposes certain limitations forextrapolation of elevated temperature SCG data acrosstransition temperature to ambient conditions commonly usedin accelerated testing.(3392)

Ageing Effect on the Properties of Tri-Layer Polyethylene Film Used asGreenhouse RoofA. Dehbi, A. Bouaza, A.-H. I. MouradThis work aims at studying the degradable effect of naturaland artificial ageing on tri-layer polyethylene films usedas greenhouse cover. The simultaneous effect of temperatureand UVA radiation induced the most significant degradationon the film surface and consequently a reduction in thelifetime of the material(3645)

Navy Blue RoomExperimental mechanics 2

Chair: M. Carboni

Fracture Toughness Evaluation of 3Cr-1MoSteel from Vickers Indentation andTensile Test DataA.H. Mohammadi, M. Naderi, M. Iranmanesha theoretical model is proposed to estimate the fracturetoughness of 3Cr-1Mo steel from Vickers indentation andtensile test data using the indentation energy to fracture(IEF) model and substituting ball indenter for Vickersindenter. These predicted values were compared with KIcvalues obtained from Rolfe-Barsom equations based on CharpyV-Notch impact test results.(3798)

Quantitative Characterization ofMechanical Properties using InstrumentedIndentationYoung-Cheon Kim et al.(3880)

Interfacial Strength EvaluationTechnique for Thermal Barrier CoatedComponents by Using Indentation MethodY. Yamazaki S. KugaThe interfacial strength of TBC components was evaluated byan instrumented indentation machine. The microstructuralinvestigation was also performed after the thermal cyclefatigue. In addition, the residual stresses in the ceramictop-coat and in the thermal grown oxide layer were measuredas a function of the thermal cycles.(2876)

Violet RoomImpact behaviour

Chair: A. Manes

A Numerical and Experimental Study onthe Impact Behavior of Box StructuresF. Ince et al.In this study, the crash tests are performed. The crashtest is modeled using the finite element method. Thedeformations and impact force are compared with thenumerical results. The hybrid crash box is also constructedand optimized based on the deformations to obtain theminimum weight.(3527)

Multi Scale Behavior of Short-FiberReinforced Cementitious Material UnderBallistic ImpactN. A. Nordendale, W. F. Heard, P.K. BasuFiber reinforced cementitious material is optimized forimproved ballistic impact resistance with respect to typeand size of fiber, interfacial bond behavior, andvolumetric ratio of fiber. Apart from laboratory testing, amultiscale modeling scheme is developed based on a seriesof problems devised for the purpose.(3728)

Mechanical Behaviour of Normal ModulusCarbon Fibre Reinforced Polymer (CFRP)and Epoxy under Impact Tensile LoadsH.A. Al-Zubaidy, X.-L. Zhao, R. Al-MihaidiThis paper is concerned with experimental investigations ofthe mechanical properties of unidirectional normal moduluscarbon fibre reinforced polymer (CFRP) sheet and Araldite420 epoxy under quasi-static and medium impact tensileloads. Both the CFRP sheet and Araldite resin were strainrate dependent.(3268)

Thu9

60

09:30-09:50

09:50-10:10

10:10-10:30

10:30-10:50


Chair: A. Carradò

Emphasizing the accuracy of theuncertainty of residual stressdetermination using neutron diffractionR.C.Wimpory, M. BoinThe execution of residual strain measurements using neutrondiffraction to determine the residual stress state is now awell-established method. Uncertainties could be simulatedusing a model that closely represents the experimental set-up and sample that is being measured. A suggested formcould be the use of a finite element model within one ofthe many neutron scattering simulation programs.(3249)

Precise analysis of near surface NeutronStrain Imaging measurementsT. PirlingThe lateral resolution of Neutron Strain ImagingInstrumentation is normally restricted to 0.5 mm. Byentering the gauge volume only partially into the materialresolution can be improved near interfaces. But thisintroduces measuring errors. This paper describes a fullyanalytical model for the correction of such errors,allowing analysis of stresses up to 40 micrometes to asurface.(3437)

Residual stress distribution in seamlesstubes determined experimentally and byFEMT. Pirling et al.Cold drawn tubes show typical inhomogeneous deviations ingeometry causing a gradient in residual stresses (RS). A3D-FEA model was developed to calculate the geometricalchanges and RS. It can also predict the material flow andtolerances to be expected under different processconditions. Simulation was validated by RS measurements.(2882)

High Energy X-ray Diffraction at ESRF -A non destructive Tool for MaterialsScienceT. Buslaps et al.(3933)


Chair: G. Donzella

Cr2O3 Sealing of Anodized AluminiumAlloy by Heat TreatmentJ. Lee et al.Sealing of anodized aluminium alloy was carried out byrepeating dipping in hexavalent chromium oxide solution andheat treatment. By heat treatment after dipping inhexavalent chromium oxide solution, Cr2O3 was formed and itfills pores in the porous layer of anodized film. Thus, thehardness of anodized film was increased and moreover thecorrosion resistance was improved.(3657)

Life extension of FPSO’s structuraldetails using ultrasonic peeningL. Lopez-MartinezFatigue life extension has been achieved by the applicationof ultrasonic peening to high stressed areas on a FPSOinstallation. High stressed welds showed too short fatiguelives in as-welded condition. The aim with the treatmentwas to avoid any further weld repair during the remainingservice life. Fatigue results showed four to six timesenhancement.(2857)

Role of Grain Boundaries in diffusionalPhenomena during Gas Nitriding of PureIronE. Brescia et al.(3906)

The Effect of Process Parameters on theProperties of Ni-based Thermal SprayedCoatingsK. T. Kim et al.The present study investigates the effects of main factorson the flame structure and the heat transfer usingnumerical analysis. And, the effects of main factors on thesplat formations are investigated through experiments.Finally, the interrelationships between the flamestructures, the splat formation, and the surface propertiesare studied.(3656)


Chair: A. Muc

Failure Criteria for Fiber ReinforcedMaterials based on the InterfaceStrengthC. MarotzkeThe interface strength is determined on a microscopicalscale using transversely loaded single fiber specimens.Debonding is monitored under a microscope. The energyrelease rate is calculated by FEM. In addition, failure ofmultifiber specimens is studied showing that the energyrelease rate strongly depends on the fiber volume fraction.(3644)

Characterization and performanceoptimization of a cementitious compositefor quasi-static and dynamic loadsW.F. Heard et al.The U.S. Army Engineer Research and Development Center hasconducted multi-scale material research directed towardsenhancing the response of a rapid-set, high-strengthgeopolymer cement under quasi-static and dynamic loads.Four unique tensile experiments were conducted tocharacterize and optimize material response of the fiber,matrix and interface.(3775)

Finite element analysis of Carboncomposite sandwich material withagglomerated Cork coreS. Sathis Kumar et al.Thin composite sandwich structures with biaxial carbonfabric/epoxy skin and agglomerated cork core were testedthrough four point bending test and numerical methods tocharacterize and analyse their flexural behaviour. Theresults showed compressive yielding of core material causestransition from linear elastic to non-linear elastic-plastic behaviour and also the indentation in the beam.(3774)

Carbon fiber composite lattice structurefilled with silicon rubberS.Yin, L.-Z. Wu, L. MaComposite pyramidal lattice structures were filled withsilicon rubber in their gas phase, to enhance the energyabsorption capacity. Out-of-plane compression tests werecarried out to evaluate the properties and an excitingstress increasing tread was appeared which definitelybenefited to energy absorption.(3800)



Martensitic transformation and texturein novel bcc Fe-Mn-Al-Ni-E.P.Kwon et al.Evolutions of martensitic transformation and texture duringcold rolling in novel bcc Fe-Mn-Al-Ni-Cr alloys werestudied. X-ray diffraction (XRD) and electronbackscattering diffraction (EBSD) analyses revealed thatthis alloy undergoes martensitic transformation duringdeformation.(3034)

Theoretical and experimental study ofmechanical systems with multi-wellenergy landscapeI. Benichou, S. GivliWe study a chain of bi-stable elements connected in series.We propose a simple representation for the bi-stableelements which consists from a linear elastic spring inseries with an ideal snapping element. This new approachprovides important insights and enables simple experimentalstudying of the behaviour of multi-stable systems.(2854)

The Mechanism of Temper EmbrittlementObserved in AISI-4340 SteelsN. S. Lim et al.(3760)

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Thu9

61

09:30-09:50

09:50-10:10

10:10-10:30

10:30-10:50

Light Blue RoomPolymers

Chair: K. Jacob

A study for evaluation method ofviscoelastic materials under dynamicloadingT.Tamaogi, Y.Sogabe, Z. Q. WuThe method for simply deciding the characteristic values ofviscoelastic materials in the elastic region was newlyproposed. The analysis of considering the reflection andthe transmission using the elementary theory in thefrequency domain was also presented.(3241)

Micro-mechanical analysis of theconfined amorphous phase in semi-crystalline polymersJ. Pinto et al.In order to better understand the strain mechanisms in theconfined amorphous phase of the semi-crystalline polymers,a micromechanical model is developed and displacementfields are measured at the micro scale in the LLDPE.(3662)

Modelling of thermal ageing effect onelastic-viscoplastic behaviour of semi-cristallin polymers by D.N.L.R approachR. Ferhoum, M. Aberkane, M. Ould OualiThis work is devoted to the numerical and experimentalstudy of thermal ageing effect on microstructure andmechanical properties of HDPE. Uniaxiale tension tests wereconducted at 25 0C in order to characterize the largedeformation response of HDPE(3903)

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Chair: M. Carboni

Monitoring of fatigue crack growth incomposite adhesively bonded joints usingFibre Bragg GratingsA. Bernasconi, M. Carboni, L. ComolliFatigue crack growth in adhesively bonded joints of thickcomposite laminates was experimentally investigated usingFiber Bragg Gratings (FBG). A good correlation between thecrack tip position and the variation of the signal providedby the FBGs indicated that the proposed configuration ofFBG array can detect and monitor a fatigue crack in theadhesive joint.(4035)

Indentation based life assessment forboiler tubes of fossil power plantsW. Choi et al.X20CrMoV12 (12%Cr) steel has been widely used forsuperheater and reheater tubes of power plants. Long-termservice at the elevated temperature causes deterioration ofmechanical properties. In this paper, material propertiesof X20 steel tubes were experimentally evaluated byportable indentation tester. Also damage evolution modelsare modified to determine remaining life of boiler tubes.(3007)

An Innovative Method to DetermineBonding Strength Envelope Based onTheory of Bi-Material InterfaceMechanicsM.A.K Chowdhuri, Z. XiaThis paper presents a new test method to determine theinterface normal-shear bonding strength criterion(envelope). The design of specimen geometry is based on anaxi-symmetric asymptotic analysis on the stress field nearthe free edge of the bi-material interface, through whichappropriate interface bonding angle is determined foreliminating the stress singularity.(2958)

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Violet RoomImpact behaviour

Chair: A. Manes

Experimental and Numerical Investigationon the High Velocity Impact Response ofGLARE with Different Thickness RatioH. Ahmadi et al.Some 2/1 GLARE laminates are manufactured and impacted byblunt cylinder projectiles at energies up to that requiredto achieve complete perforation of the target using ahelium gas gun. The effect of changing thickness ofaluminum or composite layers on the ballistic performanceof GLARE is investigated.(2945)

Mechanical properties and energyabsorption of heterogeneous andfunctionally graded cellular structuresA. Ajdari, S. Babaee, A. VaziriThe crushing behavior and energy absorption of 2Dhoneycombs made of a linear elastic-perfectly plasticmaterial with constant and functionally graded density werestudied up to large crushing strains using finite elementsimulation. We also developed detailed finite elementmodels of a three-dimensional closed-cell rhombicdodecahedron structure subjected to dynamic crushing.(4139)

Elasto-Plastic Response of ImpactedModeratly Thick Rectangular Plates withDifferent Boundary ConditionsK. KhorshidiThis paper introduces semi-analytically solution for theelasto-plastic analysis of the isotropic Mindlinrectangular plates subjected to impact of a small mass. Thefree vibration is calculated by using the exact solution.Finally, the influence of plate's dimensions and boundaryconditions and the impactor’s radius and velocity on theimpact parameters are examined and discussed in detail.(3539)

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Thu9

62

11:00-11:20

11:20-11:40

11:40-12:00


Chair: A. Carradò

Micro Stress-Strain-Analysis of Polymer-Metal-Interphases in Adhesively BondedJointsP. L. Geiss, M. PresserEpoxide adhesives form interphases in adhesive joints dueto adhesive-surface interaction between adhesive andsubstrate. The properties of these interphases play animportant role concerning the performance and durability ofstructural adhesive joints under service conditions. A newapproach is presented to conduct micromechanical shearstress-strain analysis under ambient conditions using microshear specimen in combination with high resolution digitalmicroscopy.(3572)

Precise strain measurement in complexmaterials using Digital VolumetricCorrelation and time lapse micro-CT dataI.Jandejsek, O.Jirousek, D.VavrikDigital volumetric correlation (DVC) method can be employedfor evaluation of full-volume displacement and strainfields in deformed material with clearly recognizablemicrostructure. The displacement fields were measured inset of control points by DVC utilizing vertices of atetrahedral FE mesh. Problems of accuracy, especially inevaluation of the strain field from the noisy measureddisplacements and problems of computational efficiency ofthe method are discussed.(3431)

Identification, using nanoindentationtests, of mechanical behaviour of a 2C22steel presenting a residual stress stateJ. Breuils et al.Thanks to nanoindentation tests, performed with twodifferent sharp indenters, and 3D finite elementsimulations, the mechanical behaviour and the residualstress state of a 2C22 steel sample, in which a residualstress state has been introduced, was determined. Resultsare validated using X-ray diffraction.(3697)


Chair: R. Konecna

Evaluation of the residual stressesinduced by shot peening on some sinteredsteelsR. Gerosa et al.Two high performance PM steels were considered fromdiffusion bonded and pre-alloyed powders (6.9 and 7.1g/cm3). The steels were submitted to different shot-peeningcycles. The residual stresses were measured by holedrilling technique and the data were related with theresults coming from X-ray diffraction, metallographicanalysis and mechanical tests.(4146)

Vacuum Oxy-nitrocarburization of UltraFine Electrolytic IronM. P. Nikolova et al.Samples of Armco iron with electrolytic Fe coating werehardened by vacuum oxy-nitrocarburizing at lowtemperature.The influence of the structural difference onthe depth profile, hardness distribution and X-raydiffraction pattern of the oxy-nitrocarburized specimenswere performed.(3267)

Investigation of the electrochemicalcharacteristics for casted AC7AValuminum alloy in natural seawaterJ.-C.Park, S.-J.Kim(3348)


Chair: E. Graciani

Mechanical behaviors of carbon fiberreinforced composite truss core sandwichstructuresL. Ma et al.Analytical and experimental investigations are presented tostudy the response and failure of pyramidal truss coresandwich panel made of carbon fiber composite under out-of-plane, axial compression and three-point-bending. Pyramidaltruss core sandwich panels were fabricated using a hot-press technique. The responses of the sandwich panels weremeasured up to failure.(3138)

Numerical simulations of the mechanicalbehaviour of various periodic cellularcores for sandwich panelsM. N. Velea, S. LacheThis paper aims to numerically investigate the bending andshear stiffness of a sandwich beam containing a novel coreand to determine its relative position on a performancescale, in comparison to the most known used cellulartopologies: honeycomb, corrugated and pyramidal latticetruss, investigated in the same loading conditions.(3555)

Fatigue propagation of induced cracks bystiffeners in repaired panels withcomposite patchesH. Hosseini-Toudeshky, M.A. Ghaffari, B. MohammadiIn this study, composite patch repair of cracks in generalmixed-mode conditions are considered in practical skin-stiffener panels under a cyclic loading. The crack isconsidered to be near the stiffener around a rivet. Life ofthe repaired panels with various composite patch lay-upsand effects of size and distance of rivets on the crackgrowth life will be investigated.(3809)



The effect of magnetism on strength andstructural stability in ferromagneticmetalsM. Sob, M. Zeleny, M. FriakWe report on the effect of magnetism on ideal tensilestrength and structural stability of iron, cobalt andnickel at high-strain deformation. The anisotropy oftensile strength is explained in terms of higher-symmetrystructures encountered along the deformation paths. Phaseboundaries are used to predict the lattice parameters andmagnetic states of iron, cobalt and nickel overlayers onvarious (001) and (111) substrates.(2911)

Forming of C45 Steel at CriticalTemperatureD. Hauserová(6000)

Effect of laser remelting on themechanical behaviour of Inconel 625cold-sprayed coatingsP. Poza(7004)

Thu9

63

11:00-11:20

11:20-11:40

11:40-12:00

Light Blue RoomMechanical properties of sprayedcoatings (organized by S. Vezzù)

Chair: S. Vezzù

Fractographic study of adhesion testedthermal barrier coatings subjected toisothermal and cyclic heat treatmentR. Eriksson et al.Thermal barrier coatings are commonly used in gas turbines.In the present study adhesion tests have been conducted oncoated specimens subjected to different heat treatments:isothermal oxidation, thermal cycling fatigue and burnerrig test. The fracture surfaces resulting from the adhesiontest have been investigated and the fracture behavior hasbeen characterized.(3721)

Nanomechanical characterization of thinhard coating using indentation, scratchand tribological testingF. Ecarla, G. Favaro(8030)

Characteristics evaluation of cavitationbehavior on Al-Zn-Zr thermal spraycoating and sealingK.Seong-Jong, L.Seung-Jun(3352)


Chair: M. Carboni

An Innovative Method for MeasuringYoung's Modulus of Multi-LayeredMaterials Using Postbuckling BehaviorA.OhtsukiThe method is based on a nonlinear deformation theory. Bymeasuring the vertical displacement and the deflectionangle, each Young’s modulus can be easily obtained forvarious multi-layered materials. Measurements were carriedout on a two-layered material consisting of a thin pianowire and a copper electrodeposition layer.(2974)

A computational estimation of cyclicmaterial properties using ArtificialNeural NetworksA. Tomasella et al.The structural durability design of components requires theknowledge of cyclic material properties. These parametersrequire many experimental tests to be correctly determined.These tests need a big effort in terms of time and costs.In order to reduce this effort Artificial Neural Networkcan be implemented, allowing an estimation of the cyclicmaterial properties from the static parameters.(2871)

Application of PVDF Film Sensor toDetect Early Damage in Wind TurbineBlade ComponentsY.-H. Huh et al.Monitoring technique for detection of early damage in thewind turbine blade has been investigated using PVDF filmsensor and strain gages. From the trailing edge componentwith shear web, optimal location for detecting theoccurrence of damage with static loading was investigatedand sensitivity of the PVDF sensors location to the damagewas examined.(3854)

Violet RoomFilm coatings

Chair: R. Claudio

Mechanical Properties of Copper ThinFilms Used in Electronic DevicesS.Zhang et al.This paper presents tensile and low cycle fatigueproperties of copper films used in electronic devices.Copper films tested were rolled copper, electrolyticcopper, direct current plated copper and pulse platedcopper. Tensile and 4-point bending fatigue tests wereperformed and cycles to crack initiation and those forpropagation were obtained.(3500)

Tribological Behaviour of CompositeCoatingsM. Pazderová, M. BradáC, M. ValešIn this paper tribological behaviour and wear resistance ofcomposite coatings based on zinc with PTFE particles areinvestigated. The coating types included in this papercover a broad range of coatings composition, depositionconditions, and measurements. Test results show thatincorporation of PTFE particles into zinc coatingpositively effects friction coefficient, self-lubrication,etc.(3608)

Fatigue Behavior of ElectrodepositedNanocrystalline Nickel FilmsS.-B. Lee, D.-C. BaekA new micro fatigue testing machine was developed to obtainthe high cycles fatigue behavior of thin films for the longterm reliability of MEMS/nano structures. Electrodepositednanocrystalline nickel thin films exhibited significantrate dependency on tensile and fatigue behavior even inroom temperature due to the grain size related behavior.(3613)

Thu9

64

12:00-12:20

12:20-12:40

12:40-13:00

13:00-13:20


Chair: A. Carradò

Analysis of the Elastic-plasticProperties of Metallic Materials byInstrumented Spherical IndentationTestingM. Beghini et al.The existence of materials having different constitutivelaws but indistinguishable L-h curves is discussed andtheir responses are examined via experimental and numericalanalyses, probing that the materials constitutiveproperties can be distinguished accounting for the strainprocesses promoted by indenters. A reverse analysisensuring the uniqueness between the L-h and the stress-strain curves is proposed.(3391)

A study on integrity assessment of theresistance spot weld by InfraredThermographyS.-Y. Lee et al.The scope of the present study was to find out the mosteffective approach to non-destructive evaluation ofresistance spot welding. Three different techniques such asPhoto infrared thermography, Ultrasound-infraredthermography and Lock-in methods were used to acquireinformation for evaluation of weld soundness.(3546)

The Effects of Ordering Reaction on HighTemperature Mechanical Behavior in Alloy600S.S. Kim,Y. S. KimAlloy 600 has a ordering reaction under 520 Deg C. Orderingreaction affects on the hightemperaure mechancalproperties. Serration and plateau of tensile strength areidentical to the ordering reaction region.(3571)

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Chair: R. Konecna

Growth and retardation of physicallyshort fatigue cracks in an aircraft Al-alloy after shot peeningI. CernýThe paper contains results of an investigation of an effectof shot peening on initiation and growth of physicallyshort fatigue crack in an aircraft V-95 (7075) Al-alloy.Crack growth after shot peening was measured and comparedwith crack growth in specimens without shot peening.Retardation of crack growth was significant particularlyfor cracks shorter than 2 mm.(3556)

Characterisation of the Thermal Damagein a Martensitic Steel SubstrateConsequent to Laser Cladding ProcessB. Valsecchi et al.The paper deals with the study of the thermal damage ofmartensitic stainless steel during fiberlaser claddingwith Co-based powder. Two different process conditions weretested, thus two different inputs of energy wereinvestigated. The substrate damage was characterized bothin terms of microstructure and microhardness values as wellas temperature heating and cooling during the laserprocess.(3831)

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Chair: E. Graciani

Quasi-static compressive and low-impactresponse of multilayer carbon fibresandwich panels with pyramidal trusscoresJ. Xiong , L. Wu , L. MaA new method for fabricating multilayer carbon fibercomposite Pyramidal truss cores was developed based on themolding hot-press technique. The quasi-static compressiveand low-velocity impact response of multilayer carbon fiberpyramidal truss cores were investigated. Buckling,delamination, fracture and debonding were observed andfailure modes are different with different relativedensities.(3148)

Performance of RC and FRC Wall PanelsReinforced with Mild Steel and GFRPComposites in Blast EventsT. T. Garfield et al.This paper presents experimental data generated forcalibrating simulation models that predict the performance(crack patterns) of reinforced concrete wall panels with awide range of construction details under blast loading.Panels with fiber reinforced concrete or with externalbidirectional glass fiber reinforced polymer overlays hadthe best performance.(3709)

Influence of the mode mixity ratio andtest procedures on the total energyrelease rate in carbon-epoxy laminatesV. Mollón et al.The fracture behaviour under modes I, II and different modeI/II ratios has been studied for a AS4/3501-6 carbon fibreepoxy resin laminate. FEM was used in order to analyzemodes I, II and mixed I/II and to compare the experimentaland numerical results.(3025)

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Effects of carbon on the strain-inducedphase transformation and mechanicalproperties of the low-carbon steelscontaining 17 wt.% MnJ.Seol, S.Lee, C.Park(3856)

State of steel products in industrialproduction processesT. Wuest, D. Klein, K.-D. ThobenDescribing a product by its state ideally provides allnecessary information to all stakeholders (process owners)at any time before, during and after an industrialproduction process in order to increase the overallquality. After a first definition of the terms productstate and relevant state characteristics, a short examplewill be given to make it more feasible.(3042)

Deformation Behavior of Ferrite-baseLightweight Fe-Mn-Al-C SteelC-H Seo et al.(3054)

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Thu9

65

12:00-12:20

12:20-12:40

12:40-13:00

13:00-13:20

Light Blue RoomMechanical properties of sprayedcoatings (organized by S. Vezzù)

Chair: S. Vezzù

Indentation Fracture Toughness ofNanostructured Alumina – 13% TitaniaCoatings Deposited by Atmospheric PlasmaSprayÁ. Rico, E. Otero, J. RodriguezIndentation fracture toughness of plasma sprayedAl2O3–TiO2 nanostructured coatings was studied.Increments close to 40% in fracture toughness weremeasured. Toughening mechanisms such as compressiveresidual stresses fields are thought to be responsible forthe observed behaviour. A theoretical model describingthese phenomena was applied and a reasonable agreement withexperiments was achieved.(3718)

Computer simulation of cold sprayeddeposition using smoothed particlehydrodynamicsA.N. Manap et al.The smoothed particle hydrodynamics (SPH) method is appliedto simulate the cold spray (CS) process. The adhesiveinteraction between the contacting surfaces is described byintersurface forces using the cohesive zone model. Thesimulated deformed particle shape evolution and estimatedcritical velocity from other sources were compared and goodagreement was obtained.(3242)

Coating thickness and roughness effecton stress distribution of A356.0 underthermo-mechanical loadingsA. Moridi, M. Azadi, G.H. FarrahiCast aluminium-silicon alloy, A356.0, is widely used inautomotive components such as diesel engine cylinder heads.The purpose of the present work is to simulate stressdistribution of A356.0 under thermo-mechanical cyclicloadings. Different thicknesses from 300 to 800 microns oftop coat and also roughness of the interfaces are simulatedto get best stress gradient.(3713)

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Chair: M. Carboni

Visualization of high-speed fracturephenomena of glass container foreffective glass recycling technologydevelopmentH.Sakamoto et al.A new effective “Cullet” generation technique by usingunderwater shock wave was proposed for recycling. The glasscontainers crushing process by using underwater shockwavewas observed with high-speed video camera and Thebehaviors of the shockwaves generated by explosive energyand the fracture phenomena of glass bottle were clarified.(3274)

Evaluation of strength model parametersfrom Taylor impact testsJ. Nussbaum, N.FaderlThis paper provides a method to extract sets of parametersfrom Taylor impact tests. Iteratively, the algorithmsearches the set of constants that best fits thesimulations to the experiments by minimizing the errorbetween the data. We focus our study on the Johnson-Cookmodel. First tests on the 6061-T6 aluminum and 4340 steelhave shown good agreements. Improvements are proposed.(3655)

Influence of the Resin Layer Thicknessat the Interface of Hybrid Metal-composite Co-cured JointsA. Russo, B. Zuccarello(8020)

Real Time Inspection and Evaluation ofFatigue Cracks on Aluminum Alloy usingthe Sheet Type Induced Current andMatrix Type Hall SensorsJ.Jun et al.(3073)

Violet RoomFilm coatings

Chair: R. Claudio

Effect of Al and Al-Si diffusion coatingon the low cycle fatigue behavior ofInconel 713LCK. Obrtlík et al.Cylindrical specimens of Inconel 713LC in untreatedcondition and surface treated with Al and Al-Si diffusioncoating were cyclically strained at 800 °C in air. Thestructural and hardness characteristics of the hardenedsurface layer are determined. Cyclic hardening/softeningcurves, cyclic stress-strain curves, and fatigue lifecurves are obtained.(3611)

Fatigue behavior of foreign objectdamaged 7075 heat treated aluminum alloycoated with PVD WC/CS. Baragetti et al.The effect of a PVD WC/C coating on the fatigue behaviourof as produced and foreign object damaged (FOD) 7075aluminum alloy is investigated. Rotating bending tests werecarried out on damaged and smooth samples in coated anduncoated conditions. The results were related with SEManalysis and with the outcomes coming from numericalcalculations.(4145)

Grain-size effect on fatigue propertiesof nanocrystalline nickel films made byelectrodepositionK. Tanaka , M. Sakakibara, H. KimachiThe grain-size effect on fatigue properties was studiedusing nickel nanocrystalline thin films with sizes rangingfrom 67 to 9 nm produced by electrodeposition. The fatiguestrength increases with decreasing grain size followingHall-Petch relations. Scanning electron microscopicobservation shows two different features depending on thegrain-size region.(2935)

Size-effects in time-dependent mechanicsin metallic MEMSJ. Hoefnagels, L. Bergers, M. Geers(4101)

Thu9

66

14:10-14:30

14:30-14:50

14:50-15:10

15:10-15:30


Chair: H. Palkowski

Non-Destructive Evaluation of Fatigue byThermal, Acoustic and ElectromagneticTechniquesE. MatsumotoThis paper considers non-destructive evaluation techniquesfor integrity of metal components of nuclear power plants.To ensure long operating time, the degradation of eachcomponent should be estimated including earlier stagebefore crack initiation. This paper proposes new non-destructive evaluation techniques using acoustic,electromagnetic and thermal properties of materials.(3855)

Inspection of Inclusions in the ColdRolled SteelJ.W. Jun et al.(3480)

A Neural Networks approach tocharacterize material properties usingthe spherical indentation testA.H. Mahmoudi, S.H. NourbakhshThe purpose of the present work is to determine threeparameters of the LUDWIG’s equation using the sphericalindentation test and Neural Networks.(2955)

Residual stress distribution inceramic/metal systems by non-destructivetechniquesA. CarradòBioceramic coatings on metallic implants are proposed to bea solution for combining mechanical properties of the metalwith bioactive character of ceramic layer, leading to abetter integration of the implant. Residual stressesdetermination by nondestructive methods is presented for amock-up of an implant constituted by two differentbiomedical ceramic/metal systems: titanium dental implantsand porcelain crown.(2883)


Chair: B. Rivolta

Effect of voltage on diamond-like carbonthin film using linear ion sourceK.w.Ryeol et al.Diamond-like carbon films were deposited by linear ionsource-PVD method changing the anode voltages from 800 to1800V, bias voltages from earth to -200V andcharacteristics of the films were investigated usingNanoindentation, Micro raman spectroscopy, FM-SEM and XPS.The optimal voltages are considered to be around 1400V and-100V respectively.(3744)

Effect of current step-down on thegrowth and hardness of PEO coatings onAl6061 alloyY.Kim et al.A new modified-current regime, with a current step-downafter the high current process, was applied to PEOtreatment of Al6061 alloy. This method was conducive tosecure remarkably good mechanical properties, such asmicrohardness and wear resistance, without any degradationduring PEO process for thick coating.(3658)

Assessment of Heat Affected Zone ofSubmerged Arc Welding Process throughDigital Image ProcessingA.GhoshThe most intriguing issue is about HAZ softening thatimparts some uncertainties in the welded quality. Itincreases the probability of fatigue failures at theweakest zones caused by the heating and cooling cycle ofthe weld zone. An attempt has been made in this paper toassess the heat affected zone of saw of structural steelplates through the analysis of the grain structure(3647)

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Red RoomModels of behaviour of materials 3

Chair: S. Ando

Identification of cyclic and anisotropicbehaviour of ODS steels tubesE. Vanegas, K. Mocellin, R. LogéCyclic behaviour of oxide dispersion strengthened (ODS)steels was modeled. An identification process was proposedusing an inverse analysis for only one specimen. Moreover,ODS steels tubes usually reveal an anisotropic strength inthe radial, ortho-radial and longitudinal directions.Identification of 3 Hill’s parameters is done usingcompression tests of cylindrical specimens combined with aninverse analysis.(3646)

Multi-Scale Characterization for Micro-ArchitecturesD.R. Raymont, L. Hao, P.G. YoungLarge multi-scale inhomogeneous micro-architectures arechallenging to model computationally due to theircomplexity and the length-scales involved. A novel approachis taken to multi-scale characterisation for the ultimategoal of producing approximate macro-scale models ofirregular domains. By considering independent sub-volumelarge problems can be addressed with moderate hardwarerequirements.(3691)

Dynamic modeling of cleavage crackpropagation and arrest with a localapproachA. Dahl, C. Berdin, D.MoinereauA local crack arrest criterion based on critical stress hasbeen recently proposed by some of the authors, for cleavagecrack propagating in a low alloy bainitic steel. Theapplication of this criterion on isothermal crack arrestexperiments shows that the crack propagation versus timeleads to a good prediction of the crack speed and of thecrack length.(3577)

Identification of GTN model parametersby application of response surfacemethodologyM. Abbasi et al.One major issue is the accurate identification of GTN modelparameters, which it is not possible to perform experimentsfor their evaluation. In the present research a novelinverse procedure aimed to estimate the material parametersof the GTN porosity-based plastic damage model by means ofresponse surface methodology is represented.(3626)

Green RoomRolling contact fatigue

Chair: S. Baragetti

Vibration based diagnostics on rollingcontact fatigue test benchL. Solazzi, C. Petrogalli, M. LanciniThe paper presents the first results of a study made toevaluate the possibility to detect and quantify the damageevolution on components subjected to rolling contactfatigue thanks to vibration analysis supported by staticand modal fem analyses of the test bench and contactsurfaces damage digital images.(3671)

A Numerical Method to Predict the RCFBehaviour of PVD-coated TransmissionGears and Experimental ResultsS. Baragetti, S. Cavalleri, F. TordiniThe RCF behavior of case hardened uncoated and WC/C-coatedspur gears was studied experimentally under both dry andlubricated condition. A numerical procedure was implementedto foresee the RCF life of the gears. Both the actualmaterial and Ti-6Al-4V titanium alloy were analyzed withfinite element models.(3403)

Application of a Failure AssessmentDiagram under Rolling Contact toComponents with Hardness Variable alongthe DepthG.Donzella, A.Mazzu', C.PetrogalliFailure assessment diagrams are applied to surface hardenedcomponents subjected to rolling contact, consideringinherent defects as equivalent subsurface cracks, andassessing defect-free fatigue by the Dang Van model.Failure occurence and location is predicted. A generalsafety map, depending on material, inclusion content andworking condition, is obtained.(2941)

Influence of the contact pressure onrolling contact fatigue initiation of1070 steelL. Lu, X. Wang, Z. GaoRolling contact fatigue initiation of 1070 steel waspredicted by the FE method with an advanced cyclicstress–strain plasticity model and a general multiaxialfatigue criterion. Initiation life, initiation location andcrack growth direction were predicted with differentratio, which ranges from 6.0, 7.0 to 8.0.(3549)

Thu9

67

14:10-14:30

14:30-14:50

14:50-15:10

15:10-15:30

Light Blue RoomShape Memory Alloys: Present and FuturePerspectives (organized by F Furgiueleand C. Maletta)

Chair: A. Tuissi

Thermo-mechanical description of phasetransformationA. Maynadier et al.(2996)

Functional fatigue of shape memory alloywires under constant-stress andconstant-strain loading conditionsG. Scirè Mammano, E. DragoniThe designer of SMA actuators needs reliable data on thefatigue strength of the alloy under thermomechanicalcycling (functional fatigue). This paper defines fourcharacteristic tests to retrieve those data: constant-stress, constant-strain, constant-stress with controlledmaximum strain and cyclic-stress with controlled maximumstrain. Results under constant-stress and constant-strainconditions are obtained and discussed.(3523)

Crack tip martensitic transformation inNiTi alloys with non-constanttransformation stressF.Furgiuele, C.MalettaThe high values of local stresses arising near the cracktip of Nickel-Titanium based Shape Memory Alloys causes aStress-Induced Martensitic transformation. A novelanalytical model is proposed which allows to predict boththe crack tip stress distribution and extent of thetransformation region. Furthermore, the model has been usedto analyze the effects of thermo-mechanical parameters andloading conditions on the crack tip transformation region.(3884)

Effect of electrical heating conditionson functional fatigue of thin NiTi wirefor shape memory actuatorsR. Casati, S. Arnaboldi,A. TuissiThermo-mechanical cycling was carried out to study thechange of functional properties of thin SMA wires foractuators in using condition (functional fatigue). The twocurrent impulses (step and ramp) adopted to heat up thespecimens induced different alterations in shape memoryproperties after cycling.(3586)

Navy Blue RoomApplications 2

Chair: M. Benedetti

Fatigue life assessment of an exhaustsystem for naval gas turbinesR. F. Martins, J. C. Viegas, H. J. CruzPropagation of cracks was detected in an exhaust systemthat is manufactured with an austenitic stainless steel. Astrain spectrum was collected with a high-temperature spot-welded strain gauge and temperature distribution wasmonitored with thermocouples spot-welded on the criticalregion of the exhaust system. A redesigned geometry of thestructure was analysed by FEM and its fatigue lifeassessed.(3322)

Investigation of Application-specificPhenomena to Improve the LifetimeAssessment for Turbine Housings ofTurbochargersF. Laengler, T. Mao, A. ScholzThe turbine housing of a turbocharger is exposed toextensive cyclic thermo-mechanical loading. A lifetimeapproach, in conjunction with a constitutive material modelapplied in a preceding Finite-Element analysis, wasdeveloped and validated to improve the structural analysis.The focus of the following step discussed was the adaptionfor turbine housing design by considering application-specific phenomena.(3434)

Fatigue Life Evaluation for TurbineRotoUsing Green’s FunctionG.Song, B.Kim, W.ChoiThe purpose of this paper is to carry out fatigue analysesreflecting the results of the thermal stress simulationduring start up. The simple and quick simulation duringturbine start up is developed with Green's Function. Andtemperature and stress transfer Green’s functions appliedto critical locations of rotor.(3130)

Fracture Mechanics Analysis of Defectsin Pipeline Seam WeldsR. D. Caligiuri, R. A. SireThis paper presents an approach to estimating the timerequired for indications detected in pipeline seam welds togrow in fatigue to a size such that rupture can occur. Theapproach relies upon rainfall analysis of historicalpressure cycling data, defect sizes, K-solutions, crackgrowth data, and fracture toughness data to estimate timeto rupture and to set appropriate inspection intervals.(2926)

Violet RoomNanoengineering and nanotailoredcomposites

Chair: E. Riedo

Nanofiller Aggregation as ReinforcingMechanism in NanocompositesA. Dorigato , Y. Dzenis, A. PegorettiA new approach is proposed to model the elastic propertiesof polymer nanocomposites taking into account agglomerationeffects. In particular, the stiffening effect provided byrigid nanoparticles forming primary aggregates is modelledon the hypothesis that part of the polymer matrix ismechanically constrained within the aggregates. The model,has been experimentally validated on fumedsilica/polyethylene nanocomposites.(3832)

The mechanics of single crystal Cumachining at nanoscaleS. Islam, R. Ibrahim, N. KhandokerThe objective of this study is to identify the mechanics ofmachining at nano scale on single crystal Cu with differentcrystallographic orientations. A nano indenter was used formachining operations by varying the depth of cut. Thepresence of the ploughing and cutting mechanisms wasdetermined based on the pile up volume and the cuttingvolume respectively.(3209)

Mechanical and electrical properties ofmulti-walled carbon nanotubes by nano-manipulatorH. S. Jang et al.The mechanical strain was applied to the MWCNT by atungsten tip controlled by a nano-manipulator in the SEM.The elastic modulus was calculated at 0.98 TPa. Inaddition, the electrical resistance was significantlychanged during the elongation process and corresponded withthe nanotube strain.(4590)

Higher-order surface stress effects onbuckling of nanowires under uniaxialcompressionM.-S. Chiu,T. ChenA mathematical framework of higher-order surface stressesis adopted to simulate the surface stress effects resultingfrom the nonuniform surface stress across the layerthickness. To illustrate this effect, we consider thecritical force of axial buckling of a nanowire byaccounting various degrees of surface stresses.(3339)

Thu9

68

15:30-15:50

15:50-16:10

16:10-16:30

16:30-16:50

Red RoomModels of behaviour of materials 3

Chair: S. Ando

Hyperelastic modelling of post-bucklingresponse in single wall carbon nanotubesunder axial compressionE. I. Saavedra Flores et al.This paper presents a hyperelastic finite element-basedlattice approach for the description of post-bucklingresponse in SWCNTs. A one-term incompressible Ogden-typehyperelastic model is adopted to describe the mechanicalresponse of SWCNTs under axial compression. Numericalresults are compared to atomistic simulations,demonstrating the predictive capabilities of the presentmodel in capturing post-buckling behaviour under largecompressive deformations.(3103)

An Analytical Formulation for thePlastic Deformation at the Tip of ShortCracksF. Caputo, G. Lamanna, A. SopranoPlastic zone size at the tip of a crack strictly dependsupon many variables but an exact analytical solution is notyet available mainly because of the difficulties incomputing the stress-strain field ahead of the tip of agrowing crack. By using a parametric 3DFE model, numericalanalyses have been developed with the aim to derive ananalytical relationship between the PZS and the aforesaidparameters.(4140)

Identification of cyclic and anisotropicbehaviour of ODS steels tubesE. Vanegas, K. Mocellin, R. LogéCyclic behaviour of oxide dispersion strengthened (ODS)steels was modeled. An identification process was proposedusing an inverse analysis for only one specimen. Moreover,ODS steels tubes usually reveal an anisotropic strength inthe radial, ortho-radial and longitudinal directions.Identification of 3 Hill’s parameters is done usingcompression tests of cylindrical specimens combined with aninverse analysis.(3646)

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Green RoomRolling contact fatigue

Chair: S. Baragetti

Influence of the steel grades on rollingcontact fatigue of railway wheelsA. Langueh et al.The aim of this work is to develop a numerical approachwhich is able to include the inelastic material behavior inorder to compare the different steel grades influence onrolling contact fatigue of railways wheels.Results showthat the local stress-strain and the fatigue stress pathdiffer depending on the steel grades and consequently therisk of damage can be affected.(3396)

Effects of surface defects on rollingcontact fatigue of railJ. Seo, S.Kwon, D.LeeRolling contact fatigue damages on surface of rail such ashead check, squats are one of growing problems. Anotherform of rail surface damage, known as "Ballast imprint" hasbecome apparent. This damage is associated with ballastparticles. We have investigated whether ballast imprint isinitiator of crack using twin disc test and finite elementanalysis.(3064)

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Thu9

69

15:30-15:50

15:50-16:10

16:10-16:30

16:30-16:50

Light Blue RoomShape Memory Alloys: Present and FuturePerspectives (organized by F Furgiueleand C. Maletta)

Chair: A. Tuissi

Impact of the choice of a 3Dthermomechanical model for shape memoryalloys on the fracture and thedelamination predictionsC. Lexcellent ,R. L. V. TaillebotThe aim of this presentation is to examine the impact ofthe choice of the thermomechanical model in the shape ofphase transformation domains prediction. A comparison ismade between Huber Von Mises based model and anotherintegrating the asymmetry between tension and compressionin its formulation. In this aim, three situations areobserved.(3090)

Cyclic behaviour of NiTi shape memoryalloyT. Kruml et al.Degradation of mechanical properties due to the cyclicloading at RT in the regime of reversible deformation ofNiTi shape memory alloy was studied. The changes ofmechanical properties during cycling including theirkinetics are described. A very significant influence of thestrain rate on cyclic behaviour is also observed.(3332)

Finite Element and experimentalinvestigations on the influence ofinclusions during thermal cycling ofNiTi Shape Memory AlloysM.F.Urbano, A.Coda(3687)

Recent developments on the 3D modelingof SMAF. Auricchio et al.The employment of shape memory alloys (SMA) in a largenumber of engineering applications, among which biomedicalapplications, has been the motivation for an increasinginterest toward a correct and exhaustive modeling of SMAmacroscopic behavior in order to construct reliablesimulation tools, which can be successfully used in thedesign procedures of SMA devices.(3885)

Navy Blue RoomApplications 2

Chair: M. Benedetti

Failure Analysis of the Tower CraneCounterjibN. D. Zrnic et al.The paper discusses causes that led to the failure of thetower crane counterjib. The counterjib collapse resultedfrom a gusset plate failure and caused significant damageof the whole crane structure. The analysis showed that theprincipal reasons behind the gusset plate failureoriginated from design and fabrication faults.(3093)

Evaluation on the Post-buckling ResidualStrength of H-shaped Steel ColumnH. M. Park, J. H. Seo, J. H. Choi(3836)

A study on fatigue life and strength ofa GFRP composite bogie frame for urbansubway trainsK. W. Jeon, K. B. Shin, J. S. KimIn this study, we evaluated the fatigue life and strengthof a GFRP composite bogie frame for urban subway train. TheGFRP composite bogie frame has a good fatigue performancein comparison with conventional metal bogie frame based onSM490A, considering its weight.(3230)

Methodological Approaches for KinematicCoupling of non-matching Finite ElementmeshesA. Sellitto et al.This paper addresses the issue of connecting non matchingFE global and local models by introducing appropriatekinematic constraints at the interfaces. The aim is toinvestigate and to discuss the capability of the mostcommon FE based tools to deal with global-local Analysis. Asensitivity analysis on simple specimen is presented.(4175)

Violet RoomNanoengineering and nanotailoredcomposites

Chair: E. Riedo

Exfoliated graphite nanoplates-nylon 12nanocomposited made by selective lasersinteringK. Kalaitzidou et al.(3793)

A new power series solution on theelectrostatic pull-in instability ofnano cantilever actuatorsA. NoghrehabadiA closed form power series solution basis on symboliccomputation is introduced to obtain a semi analyticalsolution for the distributed parameter model. The presentmethod is capable of determining stress distribution of thenano beam actuator at the onset of instability. It is seenthat the Casimir effect significantly reduce the maximumvalue of stress resultants at the onset of instability.(8010)

Tensile Strength of Spinnable MultiwallCarbon NanotubesN. Khandoker et al.Individual Multi Wall Carbon Nanotubes (MWNTs) exhibitexceptional strength and stiffness. However, large scaleconstructs of MWNTs has reached only a few percent of theirpotential. To improve their performances in such scale, itis important to understand their strength characteristicsand failure modes. This paper reports the experimentaltensile strength of spinnable MWNTs.(3330)

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Poster session

Wed8

72

Poster SessionAdvances in Unified Strength Theory andits GeneralizationM. H. Yu, V. A. Kolupaev, Y. M. Li(3297)

A finite element modeling of thermo-hydro-mechanical behavior and numericalsimulations of progressing spallingfrontM.T. Phan et al.This paper presents a coupled thermo-hydro-mechanical modelenriched with a buckling-type criterion for progressivespalling. A general fully coupled multi-phase THM modeldescribing the behaviour of concrete at moderate and hightemperatures is presented. Then the spalling criterion andits numerical implementation in the framework of the finiteelement method are presented.(3642)

A numerical investigation on significantparameters influencing the flatwisecompressive behaviour of a NomexTMHoneycombM. Giglio, A. Gilioli, A. ManesStarting from an experimental-numerical experience, basedon “virtual test” approach of a flatwise compressivetest on a Nomex Honeycomb core, a parametrical analysis ofthe most significant parameters is carried on by means ofFinite Element models.(3617)

Notch sensitivity of fracture toughnessin thermoset resinsD. Torres et al.(3379)

3-D Simulation of shock waves generatedby dense explosive in shell structuresM.Buonsanti, G.Leonardi, F.ScopellitiIn this paper we want to analyse the behaviour of spatialshell structures subjected to fire and pressure wave of anexplosion. The structural problem was tackled analysing thestress field to the effect of temperature-pressuregenerated by the fire and by the instantaneous pressurewave generated by the blast.(3107)

A Neural Networks approach tocharacterize material properties usingthe spherical indentation testA.H. Mahmoudi, S.H. NourbakhshThe purpose of the present work is to determine threeparameters of the LUDWIG’s equation using the sphericalindentation test and Neural Networks.(2955)

Fracture parameter Analysis on a doubleedge crack problem by the method ofElectronic Speckle patternInterferometry (ESPI)N.Tajik, K.Sedighiani, N.SoltaniIn the present study, speckle interferometry was used toanalyze a double edge crack in a finite plate undertension. For validating the results, several finite elementanalyses were performed and also the results are comparedwith those from available empirical formulas.(3596)

A study on the accelerated vibrationendurance tests for battery fixingbracket in electrically driven vehiclesY.ChoiThe acceleration delivered to the bracket are measured onthe expressway, national highway, local road, city street,and unpaved road. For the accelerated vibration test, theacceleration test of six degrees of freedom (DOF) in thetime domain using MAST and the acceleration test of single-DOF in the frequency domain using single axis equipment areperformed.(2916)

A constitutive equation for thebehaviour of a mountaineering rope understretching during a climber's fallA. Manes, G. Signoretti, G. BressanThe present paper proposes a constitutive model describingthe behavior of a PA rope for climbing activities. Modelsparameters (accounting for strain and strain rate) havebeen calibrated on experimental laboratory tests. Acalibrated analytical model can support furtherinvestigations on different solutions of mountaineeringequipment in order to increase safety.(3999)

A new solution for natural convectionabout a vertical cone embedded in porousmedia prescribed wall temperature usingpower series - PadéM. GhalambazThis study apply an integrated Power series- Padéapproximants technique (PS - Padé) to solve a system ofnonlinear differential equations arising from thesimilarity solution for the natural convection of Darcianfluid about a vertical full cone embedded in porous mediaprescribed wall temperature. Finally, the obtained resultsare compared with numerical results.(8014)

A phase field modelling for multi-scaledeformation mechanics of polycrystallinemetalsT.UeharaStress distribution in polycrystalline microstructures iscalculated using coupling equations between microstructureand stress using a multi-phase-field model. Microstructuremorphology revealed to vary by considering the effect ofstress. A tensile-test simulation is also demonstrated, andit revealed that microstructure rearrangement is induced byan external macroscopic loading.(3756)

A study on the effect of dynamicbehavior of external fuel tankhorizontal fin on fatigue lifeG. W. Kim, K. S. Shin, J. Y. LeeThis study presents work of numerical simulation toevaluate the effect of dynamic behaviour of externalfuel tank horizontal fin. To achieve this aim, fatigueanalysis in both time and frequency domain based on FEMhave conducted by utilizing the dynamic load history ofspeed brake.(3134)

A Deflection of Nano-Cantilevers UsingMonotone SolutionM. GhalambazA positive monotone solution base on Green’s function inthe form of a nonlinear iterative integral is introduced,to obtain a solution for deflection of nano cantileverbeams. The results of present work are useful to prove thestability and convergence of Green’s function to dealwith deflection of nano cantilever switches in future worksand simplifications.(8011)

A new solution on the buckling andstable length of multi wall carbonnanotube probes near graphite sheetsA. YekrangiA power series solution basis on symbolic computation isused to study effect of intermolecular forces on theinstability of multi walled carbon nanotube (MWCNT)probes/actuators in the vicinity of thin and thickgraphite. The stable length of MWCNT is determined as afunction of its geometrical and material characteristics,initial gap and number of graphene layers.(8012)

A study on life prediction of low cyclefatigue in superalloy for gas turbinebladesJ. H. Kim, H. Y. Yang, K. B. YooThe relations between plastic and total strain energydensities and number of cycles to failure are examined inorder to predict the low cycle fatigue life of superalloyat different temperatures. The fatigue lives that arepredicted by Coffin-Manson method and strain energy methodsare compared with the measured fatigue lives.(3275)

A thermomechanical analysis of thelocalization process at themicrostructure scale of a 316L stainlesssteelR.Seghir et al.Local plasticity triggers a heterogeneous thermaldissipation. Some original experimental works enabling thesimultaneous determination of thermal and strain fields, inthe same area, at grain scale have already been realized inhouse on a A316L steel. This paper introduces on one hand,some numerical treatments in order to access experimentaldissipations and on an other hand, the development of afully coupled crystalline plasticity constitutive model.(3524)

Wed8

73

Poster SessionAn Approximate Solution for a SimplePendulum beyond the Small Angles RegimesUsing Hybrid Artificial Neural Networkand Particle Swarm OptimizationAlgorithmA. YekrangiThis study presents a new method by using hybrid neuralnetworks and particle swarm optimization algorithm, inorder to find a simple approximate solution for motion of anonlinear pendulum beyond the small angles regime. Thepresent method is expandable to solve complex pendulums.(8013)

Analytical model for identification offrequency response of a centrallyclamped diskE. Tarallo, G. Mastinu, M. GobbiEvaluation of the frequency response of a centrally clampedspinning disk. The disk has been modelled as a thin plate,considering only the out of plane displacements. Theanalytical model of the stationary disk have beenidentified by fitting to a FE model of a real disk(8000)

Assessment of Debonding-InducedToughening in NanocompositesM. Zappalorto, M. Salviato, M. QuaresiminIn the present work, a model for the assessment of theextension and the shape of the debonding region (DBR) andthe toughness improvement due to nanoparticle debonding ispresented. The model takes into account the emergence of aninterphase surrounding the nanoparticle.(3913)

Characterization and prediction of someengineering properties of polymer -Clay/Silica hybrid nanocompositesthrough ANN and regression modelsD. Lingaraju et al.The effect of reinforcing polymer with nanoclay/silica onsome important properties like hardness, storage modulus,glass transition temperature, wear, damping and postunderwater shock properties from the bulk of the presentstudy. RBF network and regression models have been employedfor theoretical prediction. ANN, have been found to be invery good agreement with the actual results.(4131)

Analysis of strain rate behavior of anAl 6061 T6 alloyA. Manes et al.A combined experimental and numerical technique, based onan inverse approach, for material model identification wasapplied to the Al 6061 T6 alloy. The attention was focusedon the strain rate sensitivity identification since thematerial finds several applications in ballistic impactscenario.(3702)

Anelasticity in Some Liquid CrystallineElastomersA. C. Griffin et al.Polydomain smectic C main-chain liquid crystallineelastomer films have been uniaxiallly stretched (roomtemperature) to give a monodomain. Upon removal of load, asignificant level of strain is retained - anelasticresponse. We will show strain recovery as a function oftime after removal of load; stress/strain behavior of thepartially recovered films, and the temperature profile ofthe strain recovery process.(3381)

Automatic detection of welding defectsusing radiography with a neural approachN.B.Yahia, T.Belhadj, S.B.A.ZghalIn this work, the automatic control and inspection ofwelding defects is made by edge detection method ofradiographic images, based essentially on the use of aPerceptron Multilayer (PCM). This paper describes an originmethod to detect welding defects existing in the weldradiography based in the use of the artificial neuralnetworks, aim the classification and the increase of thesuccessful recognition default percentage.(3607)

Characterization of the behavior of aturbine rotor steel by inverse analysison the small punch testS. Foletti et al.The present work focuses on the application of the inversemethods on the small punch test. A numerical framework hasbeen implemented in which the small punch test has beensimulated by means of finite element analyses and comparedwith the experimental results in order to assess thematerial parameters.(6005)

Analysis of the compressive behaviour ofthermosets by models used in glassythermoplastic polymersD. Torres et al.Here we show that the elastic viscoplasic frameworkdeveloped for thermoplastic can be relevant for thermosets.We present an analysis and modeling which borrowed BPAformulated. Uniaxial compressive tests are preformed understrain conditions where isothermal and adiabatic conditionsprevail. The response is well predicted by the BPA modelprovided that the network is not affected by temperaturevariations.(3376)

Anisotropic Mechanical Behaviour of Ni-base Alloy Weld Metal ConsideringCrystal Orientation DistributionY. Mikami et al.Microscopic stress distribution in cladded weld metal ofNi-base alloy was calculated. Simulation model of acolumnar grain aggregate was generated based on a crystalorientation measurement result by electron backscatterdiffraction method. Microscopic stress much higher thanapplied macroscopic stress was observed when load wasapplied along transverse direction of columnar grain growthdirection.(3219)

Cavitation and electrochemicalcharacteristics of thermal spray coatingwith sealing materialS.-J. Kim, S.-J.Lee(3353)

Characterization of the interfacebetween composites and embedded FiberOptic sensors or NiTiNOL wiresP. Bettini et al.Interfaces between constitutive elements always play acrucial role on the performances of composites. FO havingpoly-acrylate and poly-imide coating were embedded in epoxyresin and their interface was characterized adopting aPull-Out tests. The adhesion between resin and NiTiNOLwires was also evaluated both in austenite and martensitephase.(7001)

Analytical Approach to Compute theInternal Stress Field of NEMSConsidering Casimir ForcesJ. AbdiAn analytical closed-form solution has been obtained interms of convergent series using homotopy analysis method.The shear force, bending moment and stress distributionalong the cantilevers at the onset of instability, whichare important parameters for designing electromechanicalsystems are computed and compared with numerical solution.The results computed by HPM method agree with numericalsolutions and those from the literature.(8016)

Application of small punch creep testfor Inconel 617 alloy weldmentB. J. Kim et al.In this work, SP creep tests were applied to the Inconel617 alloy and its weldment. To find the creepcharacteristics of the weakest local part in Inconel 617alloy weldment, test specimens were machined at threedifferent locations: weld metal, base metal, and HAZ. Thetest results of different microstructures were compared toone another.(3333)

Characteristic microstructure ofpolycrystalline Fe-Mn-C alloys deformedby tensile testS. Suzuki et al.Electron backscatter diffraction and X-ray diffractionmeasurements using synchrotron radiation were carried outto characterize the microstructure and crystallographicorientation of polycrystalline Fe-Mn-C alloys. Deformationtwins formed preferentially in grains with large Schmidfactors, and dislocation slip was also observed in theinterior of grains and near grain boundaries.(2873)

Closed-form Approximations of the Pull-in Parameters and Stress Field ofElectrostatic Cantilever Nano-actuatorsConsidering van der Waals AttractionA. NoghrehabadiHerein, homotopy perturbation method is used to investigatethe effect of van der Waals force on the pull-in parametersand stress distribution and the instability ofelectrostatic actuators at nano-scale separations. Theshear force, bending moment and stress distribution alongthe cantilevers at the onset of instability, which areimportant parameters for designing and manufacturing nano-actuators, are computed.(8015)

Wed8

74

Poster SessionComplex behavior using the hybrid methodof cavitation and electrochemicalcorrosion for casted Al bronzeS.-J. Kim, J.-C.Park(3354)

Correlation of the microstructuraldegradation and mechanical strength ofNi-based superalloy after thermalexposureK.B. Yoo et al.In this work, we survey the effect of long-term thermalexposure on microstructure and mechanical properties. Thedegradation of mechanical properties due to the exposuretemperature and time has been examined and correlated withthe microstructural changes during the long-term thermalexposure.(3287)

Damage and plasticity of adhesivelayers: an experimental studyA. Biel, U. StighNovel experiments have been performed in order to evaluatethe inelastic properties of epoxy adhesives. An initialload creates a zone of inelastically deformed adhesive.During a final loading phase, the properties of this zoneare analysed. Major differences due to the loadingdirection have been observed.(3119)

Design of an ankle prosthesis forswimming and walkingC. Colombo et al.This work presents a prosthetic ankle for lower limbamputees, designed for swimming and walking. Experimentalstatic tests are carried out for compliance according tostandard, in configuration for walking,. A FE model iscreated and validated by comparison with experimental test:this validated model is then used for optimization.(6002)

Compressive strength and splittingtensile strength of Zr-based metallicglassH. Date et al.When Zr based metallic glass is fractured, the lightemission is observed. It is found that the light emissionis controlled by the heat treatment and it is clarified byXRD and DSC that the light emission is not observed at atemperature of the glass transition temperature or more.(3019)

Critical Analysis of ConfoundedParameters of SAW ProcessA.Ghosh, S.Chattopadhyaya,P.K.SarkarThe main objectives of the study being the identificationof main factors,there way of affecting the welding beadparameters, influence of the interactions among the mainfactors and finally to determine the optimum settings ofthe main factors. The interactions will depict the level ofconfounded character of the major input process parameteri.e. the main factors, with respect to the significantyield parameters of the process.(3648)

Damage mechanism related to localizationof plastic deformation of Waspaloy:effect of grain sizeH.S.Ho et al.This paper focus on the effect of grain size on the damagemechanism of Waspaloy related to the localization ofplastic deformation by fatigue. Such effect is examinedfrom nano- to meso-scale by investigating the cyclicbehavior of damaged specimens related to theirreversibility of plastic strain.(2924)

Determination of the constants of damagemodelsG.H. Majzoobi, F. Rahimi Dehgolan(2887)

Contact fatigue limits of gears, railwaywheels and rails determined by means ofmultiaxial fatigue criteriaE. Conrado, C. GorlaThe Dang-Van and the Liu-Zenner multiaxial fatigue criteriaare applied to gear and wheel/rail contacts in order todetermine contact fatigue limits. The results of thisanalysis are summarized in maps, here called contactfatigue maps, similar to the well-known shakedown maps, butdrawn to provide fatigue limits.(4022)

Cyclic behavior of 316L steel predictedby means of finite element computationsJ. Liu, M. SauzayCyclic behaviour of 316L steels is predicted based oncrystalline elasto-plastic constitutive laws.(3295)

Deformation Behavior and MechanicalProperties of High Mn Steels at LowTemperaturesK.Choi et al.The objective of the present study is to investigate theeffect of austenite stability on the microstructure andmechanical properties of high Mn steels at lowtemperatures. Two steels with different austenite phasestability, Fe-14Mn-0.9C-0.5Si-1Mo and Fe-18Mn-1.5Al-0.6C-0.1Si, have been subjected to tensile andChary impact tests and their deformation behavior have beenstudied by TEM.(2988)

Development of a fatigue test machinefor high frequency applicationsC. Ghielmetti et al.In this research, a complete system of a force control unitimplemented on a home-built electro-mechanical fatigue testmachine is proposed. The entire system includes an electro-mechanical shaker, a load cell, a controller, dedicatedsoftware, and an external metallic structure to constrainthe specimen. The system has been validated performingbending tests on flat coating specimens at constantfrequency.(4233)

Cork composites and their role insustainable developmentB. Soares, L. Reis, L. SousaConcerning the environmental impact sustainable materialsare being studied to replace oil based products. Tounderstand the mechanical behaviour of these naturalmaterials is a key issue. In this paper Cork is subjectedto bending and compression tests in order to ascertain itsproperties and see how they compare to oil-based foams.(3786)

Damage Analysis of Brick-to-MortarInterfacesA. Alberto,P. Antonaci, S. ValenteA laboratory procedure aimed at generating a progressivedeterioration of the interface between brick and mortarlayers in controlled experimental conditions is presented.In order to characterize the mechanical behavior of theinterface between historical masonry buildings and repairmortar the results are interpreted through the cohesivecrack model. Experimental and numerical results are in goodagreement.(3264)

Deformation-Induced Crystallization inFatigue of a Zr-based Bulk AmorphousAlloyY. Nakasone, Y. Kimura, N. A. JopriFatigue tests were made on a Zr-based bulk amorphous alloyand revealed frequent crack branching, crack deflection andnon-propagating branches. The resultant crack growth datafluctuated widely. X-ray diffraction and EBSD analysesdetected possibility of localized crystallization in theform of Zr2Cu in fatigued specimens. The indication ofcrystallization was completely different from that inartificially crystallized samples.(3540)

Effect of mechanical surface damage onSilicon wafer strengthD. Echizenya, H.Sakamoto, K. SasakiIn this paper, bending strength of polycrystalline siliconwafers were measured, and evaluation regarding the cause ofdifferent strength values. Residual stress measurementsusing Raman spectroscopic and observation with TEM werealso conducted. The results clarified the existence ofnumerous cracks on the wafer surface that are assumed to begenerated during slicing process.(3022)

Wed8

75

Poster SessionEffect of the experimental techniqueonto R dependence of Delta-KM. Carboni, D. RegazziAn experimental study on two structural steels wasconducted to determine the influence of the adoptedtechnique onto the threshold SIF value. The standardapproach used to pre-crack the specimens showed to have aninfluence on the determined thresholds. This observationcan have a huge effect on both life prediction andinspection intervals for a real structure.(4620)

Effects of HIPS on the mechanical,thermal and morphological properties ofSEBS and SIS type elastomersM. Tasdemir, E. UlugThe effect of PS on the mechanical, thermal andmorphological properties of SEBS and SIS type elastomerswas investigated in flow directions. The structure andproperties of the composites are characterized using a SEM,DSC and EDS. Furthermore, Polymer blends were subjected toexaminations to obtain their mechanical properties, MFI,vicat softening point and HDT.(2910)

Energy Approach Vibration Analysis ofNonlocal Timoshenko Beam TheoryB. Mohammadi, S.A.M. Ghannadpour, S. BeheshtiThe aim of this paper is to present the vibration behaviorof nano beams based on Eringen’s nonlocal elasticityusing the theorem of minimum total potential energy. Theproposed approach provides efficient and extremely accurateresults for a variety of some micro- and nano-beams withvarious boundary conditions. Obtained results will becompared with the available results in the literature.(3740)

Fabrication of Ni, Pt, Pt/Ni nanopowders using wire explosion process andcharacterizationT.K. Jung et al.Spherical typed Pt, Ni and Pt/Ni nanoparticles less than 50nm in particle size were successfully obtained by pulsedwire explosion in D.I. water. The Pt nanoparticlesexhibited high purity, but the Ni nanoparticles exhibited apartial and very thin oxide layer. The obtained Pt/Ninanoparticles consisted of Pt, Ni and PtNi compositenanoparticles.(3667)

Effect of wave-front width on micro-jetfrom a shocked aluminum surfaceP. Wang, J. L. ShaoWe calculate the formation of micro-jet from the metalsurface by smoothed particle hydrodynamics. The effect ofwave-front width on micro-jet is discussed. Both the massand the maximal velocity will decrease with the increasingof the width of wave fron which compare well withthe experiments.(3924)

Effects of impurity segregation to grainboundary on intergranular cracking in 2.25Cr-1W steelK.B. Yoo et al.The phosphorus segregation at the carbide interfaces of thealloy containing the higher bulk content of phosphorus ismainly replaced by the segregation of nitrogen, tin andtellurium in the alloy containing a lower bulk content ofphosphorus. These results suggest that the intergranularcracking follows the sequence from the crater interface tothe carbide-free grain boundaries.(3284)

Evaluation of the influence of suppliedoil quantity and contact bulktemperature on micro-pitting lifetimefor gear surface strengthS. M. Moon, T. W. Kim, Y. J. Cho(3829)

Failure analysis of a shaft of a carlift systemD. Crivelli, R. Ghelichi, M. GuaglianoIn this work the failure of the shaft of a car lift systemused in an automated parking is analyzed. The possiblecauses of the failure through design, material andfractographical inspections were investigated, and possiblesolutions to avoid these cases in the future are suggested.(8004)

Effects of Coupled Fields on theMechanical Response of ElectricallyConductive CompositesA. Barakati, O. I. Zhupanska(3582)

Effects of sodium tripolyphosphateaddition on early-age physico-chemicalproperties of cement pastesM. Ltifi et al.Sodium tripolyphosphate (STPP) is generally employed as adispersing agent in ceramic processing and could be a low-cost plasticizer for cement-based materials. The aim of thepresent work was to evaluate the effect of STPP on theearly-age behaviour of cementitious matrices. Differentconcentrations of STPP were considered (0 g/L to 50 g/L).(3868)

Experimental study of the influence ofstrain rate on fracture of Ti6Al4VJ. Peirs, P.Verleysen, J.DegrieckStatic and dynamic shear, tensile and plain strainexperiments on Ti6Al4V are carried out. The occurance ofvoids leading to fracture is studied by microscopicanalysis. The fracture characteristics between differentstress states and strain rates are compared.(3160)

Failure Analysis of the Stacker CrawlerChain LinkS. M. Bošnjak et al.Based on the results of the numerical-experimentalanalysis, it can be concluded that chain link breakdown ispredominantly caused by (a) substantial deviation of themechanical properties of the material with respect to thoseprescribed by the standard and (b) the existence of macroand microcracks in the material structure.(3094)

Effects of flow velocity and time inpotentiostatic experiment in seawaterfor 5083-H116 Al alloyS.-J.Kim, S.-J.Lee, M.-S.Han(3351)

Electrochemical characteristics of 5000and 6000 series materials for Al alloyship in sea waterS.-J.Kim, S.-J.Lee, K.-H.Kim(3350)

Expulsion Reduction in Resistance SpotWelding by Controlling of weldingCurrent WaveformI. Hwang, D. Kim, M. KangThere is a welding problem such as expulsion in resistancespot welding of high strength steel. We tried to achieveexpulsion reduction through controlling welding current.Steel sheets coated by Al-Si that have strength of 1500MPawas welded. The variation of the heating and cooling bypulse current waveform control has an effect on expulsion.(3627)

Failure Analysis of the Upper Mount of aCar SuspensionG. Previati, M. Gobbi, G. MastinuThe failure of the upper mount of a suspension is veryrare. From a metallographic analysis of the damagedcomponent, no crack propagation can be observed. The loadacting on the suspension have been investigated bothnumerically and experimentally. The analysis has shown thatthe failure is due to a very high impulsive load notrelated to the normal use of the vehicle.(4628)

Wed8

76

Poster SessionFatigue Behavior Of Pipeline Steel UnderHydrogen Environment And Low TemperatureP. Fassina et al.In this paper the influence of hydrogen and low temperatureon mechanical properties of two pipeline materials, X65micro-alloyed and F22 low alloy steels, is studied.Anelectrochemical hydrogen charging method has been setup.Fatigue propagation tests were carried out on charged anduncharged specimens, by varying the test temperature andthe frequency of the load application cycle.(3982)

Fatigue properties of a low alloy 42SiCrsteel heat treated by quenching andpartitioning processI. Cerný et al.Fatigue properties of the 42SiCr steel treated usingquenching and partitioning process were investigated.Results of fatigue experiments are presented with respectto basic material state and after traditional heattreatment – quenching and tempering. Fatigue damageinitiation mechanisms, analysed particularly from fracturesurfaces, and connections between fatigue properties andmicrostructure are discussed.(3902)

Fracture Strength and Mechanism ofDental Ceramic Crown with ZirconiaThicknessG. W. Jang et al.As the development of zirconia crown using CAD/CAMtechnology, the usage of full zirconia crown is graduallyincreased. Single load-to-fracture was applied on thelingual aspect of the disto-facial cusp at a rate of1mm/min. The specimens were thoroughly evaluated for cracksand/or bulk fracture with SEM and fractography.(3125)

Impact of Scaling on Fracture Strengthof Adhesively Bonded Fibre-ReinforcedPolymer PipingA. Parashar, P. MertinyThe application of fibre-reinforced polymer (FRP) piping islimited due to, in part, unsatisfactory methods for joiningcomposite subcomponents and inadequate knowledge of failuremechanism under different loading conditions. Aim of thepresent paper is to study the effect of pipe scaling on thestrength of adhesively bonded FRP pipes using finiteelement analysis.(3181)

Fatigue behaviour of a GFRP laminate bythermographic measurementsC. Colombo et al.This work aims to study the fatigue behaviour in the finitelife region of a GFRP (glass fibre-reinforced plastic)laminate by means of two Infrared-Thermography basedtechniques; also, a traditional fatigue characterization isperformed. The results are fitted with different literaturemodels to give a final comparison.(6004)

Fatigue Properties of High StrengthBoltsA. L. Marcelo et al.(3172)

Interfacial Bonding and FracturePhenomena between Porcelain and MetalCopingJ. S. Park et al.The aim of this study is to identify fracture phenomena andto measure bonding strength between porcelain and metalcoping. This study evaluated the porcelain-metal bondingcharacteristics through three point bending test. Castmetal surface was sandblasted with 50μm, and100μm aluminum oxide.(3127)

Increased accuracy of SHPB testapparatus to better evaluate navalsteelsA.E. Nolting, R. Arsenault, M. BolducTo increase the accuracy of a Split Hopkinson Pressure Bartesting apparatus, a systematic error analysis isconducted. Sources of error are eliminated, minimized orcompensate for in the data analysis. Three high strengthnaval steels are then tested with the system and comparedto quasi-static tensile results.(3110)

Fatigue Fracture of Implant System UsingTiN and WC Coated Abutment ScrewH. C. Choe et al.In this study, fatigue test was performed to estimate thefatigue fracture of coated abutment screw for implantsystem. The fatigue life of implant system used TiN and WCcoated abutment screw was found to be relatively longercompared to non-coated abutment screw. Fatigue striationswere showed on the fractured surface.(3049)

Finite strain gradient plasticity theoryfor high speed machiningR. Royer et al.The aim of this paper is to present the choices maderegarding the behaviour law in the context of machiningprocess modeling. This study develops a large deformationstrain-gradient theoretical framework. The emphasis of thetheory is placed on the existence of high shear phenomenacreating a texture in the primary shear band.(3133)

High Temperature Tensile DeformationBehavior of New Heat Resistant AluminumAlloyS. H. Choi et al.(3666)

Influence of Hydrogen on Hot DeformationBehavior and Microstructure of PureTitaniumD.L. Sun et al.(2919)

Fatigue performance of cold drawnprestressing steel: the effect of suddenload changesJ. Toribio et al.This paper analyzes the effect produced by sudden loadchanges on the fatigue of cold drawn prestressing steel,observing: (i) that da/dN obeys mainly to the DeltaK-parameter; (ii) the appearance of a transient state whenthe product KmaxDeltaK suddenly decreases; (iii) the micro-roughness of ductile micro-tearing patterns depending ofKmax.(4104)

Formation of Surface Roughness on theTi-35Nb-xZr Alloy Using FemtosecondLaser for BiocompatibilityY. H. Jeong, W. G. Kim, H. C. ChoeThe aim of this study was to investigate the formation ofsurface roughness on the Ti-35Nb-xZr alloy usingfemtosecond laser for biocompatibility. Ti-35Nb-xZr alloysexhibited equiaxed structure of β phase. Thefemtosecond laser textured surface showed higher of Rp andRa than non treated surface. The femtosecond laser texturedsurface showed lower contact angle than non-treatedsurface.(3224)

Impact of microstructure on hightemperature wear resistanceM. Varga, H. Winkelmann, E. BadischThe wear behaviour of two hard facings was investigated atambient and elevated temperatures: a Ni-based alloy withtungsten carbide reinforcement and a carbide rich Fe-basedcomplex alloy. The wear resistance was investigated inimpacting and abrasive environment in specially developedtest equipment and additionally the hot hardness wasmeasured.(3152)

Influence of mesh parameters on FEsimulation of severe shot peening (SSP)aimed at generating nanocrystallizedsurface layerS. Bagherifard, M. GuaglianoThis study focuses on numerical simulation of severe shotpeening aimed at surface nanocrystallization. Mesh sizeeffects have been particularly studied by considering theaccumulated equivalent plastic strain, recognized as a keyparameter in grain refinement. A practical method issuggested to estimate the equivalent plastic strain valueindependent from element size to be employed for assessingthe generation of refined grains.(4600)

Wed8

77

Poster SessionInfluence of the soft segment nature onthe tensile properties and ageing ofpolyurethane films derived from hardsegments of variable geometriesC. Prisacariu, E. Scortanu(3816)

Investigation of elastic boundarycondition on the pull-in instability ofbeam-type NEMS under van der WaalsattractionY. Tadi Beni, M.R. Abadyan, A. NoghrehabadiIn nano-scale, many essential phenomena appear which arenot important at macro scales. In this paper, van der Waalsattraction and real boundary condition effects aredemonstrated for simulation of pull-in instability of beam-type nano-actuator. The obtained results agree well withnumerical solution and other models in the literature.(2906)

Load capacity of a three-row rollerslewing bearing racewayP. GöNcz, R. Potocnik, S. GlodežIn this paper a calculation model for fatigue lifetimedetermination of a three-row roller slewing bearing racewayis presented. The subsurface stress distribution in theroller slewing raceway is numerically determined for twotypes of rollers. These results are then used in thefatigue lifetime determination according to the stress-lifeapproach.(3583)

Mechanical and creep properties of Mg-4Y-3RE and Mg-3Nd-1Gd magnesium alloyA. Kielbus, T. RzychonThe relationship between the ageing parameters,microstructure, mechanical and creep properties of twomagnesium alloys Mg-4Y-3RE and Mg-3Nd-1Gd was specified.Structure investigations showed that the mechanicalproperties maximum during the ageing resulted from theformation of fine β’ precipitates. The creep testsof the Mg-3Nd-1Gd alloy show the larger creep strain andsteady-state creep rate than the alloy Mg-4Y-3RE.(4116)

Influence of water absorption on creepbehaviour of carbon fiber/epoxylaminatesH. Kim, K. TakemuraThe mechanical properties of polymer composites are changedin various environmental factor such as humid condition,low and high temperatures, water vapor and long-termphysical chemical stability. Carbon fiber/epoxy laminatesare fabricated to investigate the influence of the waterabsorption on flexural and creep behavior at 3-ponitbending.(3501)

Investigation of size effect on thepull-in instability of beam-type NEMSunder van der Waals attractionY. Tadi Beni, M.R. Abadyan, A. NoghrehabadiIn nano-scale, many essential phenomena appear which arenot important at macro scales. In this paper, van der Waalsattraction and size dependency of material characteristicsare demonstrated for simulation of pull-in instability ofbeam-type nano-actuator. The obtained results agree wellwith numerical solution and other models in the literature.(2905)

Macroscopic structural behavior on thesmall-scale PHE prototype under high-temperature test conditionK.-N. Song, H.-Y. ParkPHE is a key component to transfer the high-temperatureheat generated from VHTR to the chemical reaction formassive production of hydrogen. To investigate themacroscopic structural behavior of the PHE prototype, wecarried out high-temperature elastic/elastic-plasticstructural analysis for it as a precedent study prior tothe performance test.(3491)

Mechanical Behavior of Alpha, Beta, andGamma PlutoniumA.M. Farrow et al.(3597)

Internal Friction in CommercialAluminium Alloy AW - 2007P.Palcek et al.Amplitude dependence internal friction was examined onsamples made of extruded commercial aluminium alloy afterannealing at the different temperatures. Annealing at theincreased temperature has significant effect on dislocationstructure. All slip systems are activated in material andthermally activated dislocation transport also occurs.(3921)

Key role for the Change of HAZ width,Weld Bead Geometry & Macrostructurefor Submerged Arc Welding Process - HeatA. Ghosh,S. Chattopadhyaya,R.K. DasAn analytical solution is derived from the transient three-dimensional heat conduction equation.The electric arc isassumed to be a moving double central conicoidal heatsource with a close proximity to a Gaussian distribution.It is observed that the predicted values are in goodagreement with the experimental results. HAZ widthcalculation is also done with the help of the analyticalsolution(3650)

Mapping the local elastic properties ofpharmaceutical solids using atomic forcemicroscopyB.Govedarica et al.Elastic modulus of microcrystalline cellulose (MCC) andclarithromycin has been measured by atomic forcemicroscopy. Wide distributions of the elastic modulus implyon heterogeneous surface properties of the samples. Thiscould be explained by polycrystalline attributes ofclarithromycin and coarse structure of MCC agglomerates.AFM-based nanoindentation method was compared to apermanent indentation technique performed by nanoindenter.(3853)

Mechanical Behaviour of C45 Grade SteelDeformed in Semi-Solid StateM. Hojny, M. GlowackiThe main target of the presented paper is the presentationof possibilities of computer aided strain-stress curveconstruction for semi-solid steels. The paper includes adiscussion concerning the proposed methodology of strain-stress curve definition together with accompanyingproblems. Some example results are presented in the paperas well.(3188)

Investigation of corrosion behavior andmicrostructure characteristics foridentical welding metal of the austenitestainless steel using 18%Cr-8%Nielectrode by GTAWS.-J.Kim, J.-C.Park, M.-S.Han(3356)

Kinking Angle for Interface CracksM.R. Ayatollahi, M. MirsayarFor strong interfaces, cracks sometimes kink out of theinterface of bonded joints and then extend in one of thetwo materials. In this paper, a fracture criterion isdeveloped for predicting the kinking angle in the interfacecracks. The criterion takes into account the effect ofT-stress in addition to the stress intensity factors KI andKII.(3180)

Measuring and modeling of lowtemperature Hopkinson testsL. Berkovic et al.Dynamic tests have been performed on high hardness steel,aluminium and titanium alloy specimens by means of a splitHopkinson pressure bar (SHPB). The impact behavior wasinvestigated for strain rates ranging from 1000 to 2500s-1, and temperatures in the range from -150 °C to roomtemperature. The constitutive behaviors are obtained.(3270)

Mechanical Properties of Coconut FibersReinforced Polyester CompositesD. R. Mulinari et al.In this work, chemical modification of the coconut fibersby alkaline treatment was studied to use them asreinforcement in polyester resin. The composites wereprepared by compression molding technique using 10% wt offibers. The mechanical properties were evaluated by tensileand fatigue tests, which presented a decrease in fatiguelife.(3450)

Wed8

78

Poster SessionMechanical Properties of HDPE/ TextileFibers CompositesP.S. Souza et al.In this work the mechanical properties of high densitypolyethylene/ textile fibers residues composites werestudied in the following composition: 5 and 10 wt% fibers.Specimens were tested in tensile mode and moistureabsorption. Results showed that composites residue presentsgood mechanical compared with pure HDPE.(3178)

Microstructural investigation on an Al6061 T6 alloy subjected to ballisticimpactC. Mapelli et al.Experimental analysis on Al 6061 T6 specimens cut from theedge of a component subjected to ballistic impact has beencarried on in order to investigate on the microstructuralmodifications. The comparison between the texture situationbefore and after the impact can allow making evaluation onlocalized straining and on dissipation efficiency.(3618)

Modeling on spatial block topologicalidentification and their progressivefailure analysis of slope and cavernrock massS.Wang et al.Based on spatial block topological identification, anefficient numerical approach (GeoSMA-3D) is developed topredict deterministic size effects in structures made ofquasi-brittle materials. Jointed rock structures aremodelled to analyse the intersecting lines betweendiscontinuities and surfaces, from which good coincidenceof predicted size effect and site data is achieved.(3518)

Multiparameter Analysis Of The StressField Around A Crack TipM. Guagliano et al.Using the relations of Atluri and Kobayashi, a code wasimplemented to evaluate the characteristic parameters ofthe stress field around a crack tip by photoelasticanalysis. The performed experimental tests allowemphasizing the importance of using multiparameterequations in the study of the stress field around the cracktip.(4602)

Micro-compression testing ofspheroidized cementite structures inhypereutectoid steelsJ. Woo et al.Micro-compression testing was applied to characterize themechanical response of cementite structures inhypereutectoid steel. Through systematic spheroidizationheat treatment, we tailored various cementite structures inthe ferritic matrix. Then, the micro-pillars with differentcementite structures were fabricated by the Focused IonBeam (FIB) and showed significantly different deformationbehaviour during micro-compression testing.(3997)

Microstructure and corrosion resistanceof magnesium alloys with galvaniccoatingsA. Kielbus, G. Moskal, R. CibisThe article presents the technology of obtaining thegalvanic coatings on the ready structural elements made ofMg-Al magnesium alloy. The technology was developed in NTPCIBIS in cooperation with the Silesian University ofTechnology. The influence of the mechanical surfacepreparation and deposition on the basis of sulfamate nickeland copper plating on the layer quality and corrosionresistance were described.(4119)

Modelization and influence of shearretention parameter on the response ofcast iron beam.L.Dahmani,C. Si Hadj MohandThe goal of this work is to study the response of cast ironbeam by taking into account the variation of the shearretention parameter (aggregate interlock). It is also notedthat the best choice of a shear retention factor play asignificant role in the total response of the structure.Key Words: Modelization, cast iron, cracking, shearretention parameter.(3852)

Multi-scale mechanical analysis of thintitanium layer on UHMWPE substrates forbiomedical applicationsH. Pelletier, T. Roland,C. Gauthier(3745)

Micro-Scale Analysis and Simulation onthe behavior of a component in Al-6061during ballistic impact: 3Dacquisition and FE modelA. Manes et al.Although experimental ballistics tests remain fundamental(for military aerospace components), validated numericalanalyses are increasingly significant. Damage shape andsize are the real objective for such a validation.Therefore the paper will focus on the comparison betweenexperimental damage and simulated one using 3D acquisitionof the experimental impacted area.(3614)

Modeling fatigue behavior of quasi-isotropic laminatesM. Abadyan(8017)

Modelling competitive delamination anddebonding phenomena in compositeT-JointsA. Baldi et al.Experimental and numerical studies on the failure mode ofcomposite T-joint specimens, in the presence of adhesiveinterlaminar layers, are presented. A modelling techniquebased on a cohesive zone approach is adopted to simulatedamage propagation both in the adhesive interface and inthe most critical interlaminar layers of laminates.(7000)

Nano-engineered composites: a multiscaleapproach for adding toughness to fibrereinforced composites.L. Gorbatikh, S.V. Lomov, I. VerpoestDifferent ways have been explored to increase the damagethreshold of carbon and glass fibre reinforced compositesby adding carbon nanotubes (CNT’s) to either the matrixor the fibre sizing, or by growing them on the fibresurface. The interfacial shear strength, the interlaminarfracture toughness and the damage initiation thresholdduring tensile loading are strongly increased by addingCNT’s.(3891)

Microscopic Analysis of Fractured DentalImplant Surface after Clinical UseR. W. Kim et al.To investigate how to increase the fatigue life andcorrosion resistance of dental implants, the surfacemorphology of fractured implants were analyzed afterclinical use. Fractured fixture was analysed with cross-sectional fracture surface and longitudinal fracturesurface both. It is possible to predict the life time offractured implants.(3128)

Modeling of Strength Degradation DuringThermal Stability Testing of SiliconCarbide / Cordierite Composite MaterialM. Posarac et al.Composite materials based on SiC and cordierite materialsoffers combination of properties that are desirable forhigh-temperature structural applications. Cordierite wassynthesized from spinel, quartz and alumina and used asstarting material for SiC/cordierite composite with weightratio 70:30. Thermal stability of composite materials wasinvestigated by water quench method.(3773)

Morphological Analysis of surfaceDegradation of Advanced Alumina BasedRefactories Subjected to Thermal ShockM. M. Dimitrijevic et al.Mechanical characteristics such as strength, dynamicmodulus of elasticity resulting from resonance frequencymeasurements were considered. Image analysis was used tomeasure the fiber lengths distribution, homogeneity offiber distribution in the matrix and finally themeasurement and characterization of surface degradation ofspecimens during thermal stability testing.(3841)

Nondestructive assessment of elbow wall-thinning in a pipe systemJ. S. Ryu, Y. S. Park, D. H. BaeIn this study, wall thinning phenomena by erosion-corrosionof a KSD3507 carbon steel curved pipe was nondestructivelyassessed under conditions of 50oC, 3.5wt.% NaCl solution,and a flow rate of 5m/s. Two procedures—vibration method,and direct current potential drop (DCPD) method-- weretested and evaluated.(3404)

Wed8

79

Poster SessionNotched fatigue strength of singlecrystals at high temperatureM. FilippiniThe high temperature notched fatigue strength of the CMSX-4superalloy has been experimentally investigated by tests at950°C in load control in the LCF life regime. A suitablemodel for the assessment of the fatigue life of SXmaterials is proposed for application to the design ofturbine engines components.(8005)

On the use of a new ultrahigh-strengthCr-Mn austenitic stainless steel in gasturbine´s exhaust systemsR. F. Martins, J. B. Matos, C. M. BrancoThe local substitution of AISI 316L stainless steel gradetype by a new ultrahigh-strength Cr-Mn austenitic stainlesssteel was assessed in order to eliminate the hightemperature fatigue crack propagation, mainly due tothermal shock, that has been verified in some exhaustsystems of naval gas turbines.(3323)

Processing and mechanical properties of3Y-TZP/Ta compositesA. Smirnov et al.The first attempt to produce a matrix of zirconia (3Y-TZP)strengthened with Ta metal particles (20%. vol) withlamellar shape has been presented. These new cermets wereobtained by a wet-processing route of commercial powdersand sintered by different methods at 1400°C. Themechanical properties and microstructure were investigated.(3382)

Residual Stresses in TiC-based CermetsMeasured by IndentationF. Sergejev, E. Kimmari, M. ViljusThe core-rim structure of the carbide grains ischaracteristic for TiC-based cermets. The effect of suchstructure on the behaviour of the cermets is poorlyinvestigated. Such a structure is highly dependent of theproduction technology as the difference between thecoefficients of thermal expansion of components is causinghigh residual stresses to appear after sintering of pressedpowder parts. The indentation techniques are used todetermine the residual stresses of TiC-based cermets.(3888)

Numerical Examinations of Relationbetween Restitution Characteristic andEigen FrequenciesZ. Q. Wu et al.Relation between the restitution characteristic and eigenfrequencies is examed numerically. It is found that thenumber of eigen frequencies that should be taken intoaccount increases as the number of dimension increases. Anapproach is proposed for the optimal design of impactproblem. It can also be used to the optimal design of golfclubhead.(3820)

Optimal topologies in structural designof micropolar materialsY.Arimitsu et al.The optimal structures of micropolar materials are stronglyinfluenced by material properties of bending. Though theoptimal topologies of classical elastic solids aregenerally truss frames, those of micropolar materials arerigid frames, which are simple topologies.(3246)

Propagation of Anti-plane Shear Waves ina Cracked Graded Strip with ViscousDampingS.M. Mousavi, S.J. FariborzThe dislocation-distributed technique is utilized to studythe elastodynamic fracture behavior of a graded isotropiclayer with viscous damping. The familiar Cauchy singularityis detected at the location of dislocation. Then thedislocation is utilized for the formation of cracks in thestrip. The resulting equations results in the stressintensity factors (SIF) for the crack configuration in thestrip.(3428)

RTM process monitoring and strainacquisition by fibre opticsA. Grande et al.Fibres optics and Fibres Bragg Gratings are useful tools toinvestigate composite structures during their lifetimeservice. They are employed for the monitoring ofmanufacturing phase and the acquisition of strains duringproduct usage in service. The adopted monitoring procedureallows to follow all the stages of the production.(7002)

Numerical Modelling of Life Predictionof GearsM. Franulovic et al.Material behaviour in low–cycle fatigue regime isdescribed by material model that combines isotropic andkinematic hardening with mechanics of material damage tosimulate elastic-plastic response of the material, as wellas damage nucleation and accumulation. Chosen materialmodel is implemented into finite element code to enablenumerical modeling of materials response in gears toothroot and life prediction.(3085)

Photoelastic analysis of surface-crackedelements in presence of Hertzian contactand interposed fluidG. Vallone, M. GuaglianoThe paper presents an experimental procedure modeling acontact problem between a disk and an edge-cracked semi-plane with interposed fluid: a sandwich photo elastic modelis proposed. The assembly realization is discussed indetail. Experimental SIFs are obtained for differentfluids, using a multi parametric method. Results arereported and future work is proposed.(8001)

Properties of Advanced ExperimentalCMnSiMo Steel Achieved by QP ProcessD. Hauserová et al.(6001)

Shears of helical reinforcement in thedeformed compositeW. M. Musalimov, L. N. Musalimova, E. P. Dudyeva(3080)

Numerical simulation of electro-mechanical behaviour of CNT film coatedon PET substrateJ.-H. Kim et al.A numerical scheme based on finite element method isproposed to analyze electro-mechanical deformation of CNTfilm, and the validity of the scheme is confirmed by thecomparison with electro-mechanical tensile test results ofCNT film. Based on the simulation results and theexperimental evidence, the mechanism for electrical failureof CNT film is analyzed and the failure criterion isdiscussed.(3449)

Prediction of Submerged Arc WeldingYield Parameters through GraphicalTechniqueA. Ghosh et al.In SAW, selecting appropriate values for process variablesare essential in order to control bead size and quality.Also, condition must be selected that will ensure apredictable weld bead, which is critical for obtaining highquality.It this paper,graphical model has been developed topredict the yield parameters of SAW process.Theexperimental results have proved the capability of thedeveloped model.(3651)

Reliability Analysis for DegradationEffects of Pitting Corrosion in CarbonSteel PipesM. Nuhi Faridani et al.A probabilistic-physics-of-failure model for pittingcorrosion of X70-carbon-steels due to H2S-environment wasdeveloped. Temperature and stress dependencies of pit-depths followed an Arrhenius law relation and the pitting-corrosion activation energy was estimated. Pit-densitiesfollowed a lognormal distribution. Bayesian inference wasused to estimate the experimental parameters.(2961)

Ship to shore crane subjected toearthquakeL. SolazziThis paper is concerned the dynamical behavior of thelifting machine and in particular a very big ship to shorecrane (specially designed) subject to the earthquake. Theapplication of specific spectrums of acceleration tosimulate an earthquake (derived from the Italian Standardsin according with Eurocode) shows, in this specific case,that the actions induce by earthquake are very low.(3468)

Wed8

80

Poster SessionShort crack fatigue threshold of anitrided and shot peened low alloy steelI. Fernandez-Pariente et al.Effects of nitriding followed by shot peening areinvestigated on fatigue threshold of a low alloy steel bymeans of rotating bending tests on specimens with micro-holes acting as pre-cracks. Different sizes of micro-holeobtained with different processes were considered to assessthe influence of crack dimension on fatigue strength.(7003)

Strength Analysis for the Adhesive Layeron the Basis of Intensity of SingularStressN.-A. Noda, Y. Zhang, X. Lan. K.-T. TakaisiIn this paper the strength of adhesive joint under tensionand bending is discussed on the basis of intensity ofsingular stress by the application of FEM. A useful methodis presented with focusing on the stress at the edge ofinterface between the adhesive and adherent obtained byFEM.(3659)

Study on the Nano and Micro SurfaceMorphology Effects on InterfacialStrength of Adhesively BondedBimaterialsC. J. Jang et al.Nano & micro scale surface morphology effects onadhesion strength improvement were investigated. Micro-linepatterns were fabricated and anodized to form nano scalesurface morphology. Adhesion strength was investigated bycomparing maximum load. Experimental results showed thatadhesion strength could be enhanced by applying nano &micro scale surface morphology(3340)

Tensile properties of thin-sheet metalsafter cyclic damageJ. Galán López et al.This work studies the effect of previous cyclic damage onthe tensile properties of Ti-6Al-4V in thin-sheet form.Fatigue and tensile experiments are performed and fracturesurfaces are observed with SEM. Special attention is paidto the localization of fatigue damage on the edges of thespecimen during cyclic loading.(3150)

Simulating the damage accumulation inaircraft bleed system ducts joined bylaser and arc welding processesS.M. Carvalho, R. Baptista, M.S.F. LimaFailures in arc welded titanium ducts of aircraft pneumaticsystems lead us to develop a laser welding process. Bestresults were obtained at 200W and speed of 2 m/min. Cyclicpressurization tests were conducted. Microstructure andmechanical properties of the specimens allowed forcomparing the performances of laser beam and arc weldedjoints.(3325)

Strengthening Mechanisms of 27MnSiVS6Microalloyed Steel Deformed by FourDifferent Forging ProcessesC. Caminaga et al.The microstructures and mechanical properties ofmicroalloyed steel 27MnSiVS6 deformed by ausforming, warmforging and hot forging were analyzed. Ausforming productspresented the best mechanical properties. Strengthening byvanadium carbonitride precipitates was the main mechanisminvolved in increasing mechanical properties of ausformedand hot forged products while warm forgings werestrengthened by the higher dislocation density.(2889)

Surface Characteristics and CellProliferation of Mechanical SandblastedTi-30Ta-xNb SurfaceW. G. Kim et al.In this study, surface characteristics and cellproliferation of mechanical sandblasted Ti-30Ta-xNb surfacehave been investigated. Cell growth increased as Nb contentincreased. Ti-30Ta-xNb (x=5, 10, 15wt%) alloys blasted by100um HA particles showed lower dissolution rate than thatby 50um HA particles, Ti-30Ta-15Nb alloy showed lowerdissolution rate.(3225)

Tensile-Shear Fatigue Behavior ofAluminum and Magnesium Lap-Jointsobtained by Ultrasonic Welding andAdhesive BondingM. Carboni, F. MoroniThe research deals with the fatigue behavior of hybrid lap-joints (USMW plus adhesive bonding) made of light alloysthin sheets. Fatigue tests were carried out at differentstress ratios finding a different failure mechanism withthe applied mean stress. The S-N results showed the betterperformance of hybrid joints with respect to USMW alone.(4576)

Static and Dynamic Deformation of FullyAustenitic High Mn SteelsK.-T. Park et al.The mechanical response of two grades of the fullyaustenitic high Mn steel was examined under quasi-staticand dynamic loading, mainly focusing on the effects of Aladdition. The deformation mechanisms were discussed inassociation with the microstructure development affected bythe SFE variation under both loading conditions.(3026)

Structural Behaviors of a GFRP CompositeBogie Frame for Urban Subway Trainsunder Critical Load ConditionsJ. Seok, K. Huk, J. YoonIn order to replace a conventional steel bogie to acomposite one, in this study, a GFRP composite bogie framehas been designed and manufactured to be applied to thebogie of urban subway trains. To evaluate the structuralbehavior, the composite bogie frame was manufactured usingthe autoclave curing method and tested under the criticalload conditions.(3217)

Synthesis and characterization ofdibenzyl based polyurethane blendsobtained via the one shot synthesisrouteC. Prisacariu, E. ScortanuNovel polyurethane blends were synthesized with the modelrigid 4,4-diphenylmethane diisocyanate (MDI) or theflexible 4,4’-dibenzyl diisocyanate (DBDI) . By using the‘one shot’ technique in solution or melt, it obtainedDBDI composites based on two copolymers of variablecomposition. The materials were characterized by means ofdynamic mechanical analysis.(3823)

Textures and Mechanical Properties ofUltrafine-Grained Mg-3Al-1Zn AlloySheetsY.B. Park, W.J. KimIn an ultrafine grained AZ31-Mg alloy with a mean grainsize of 1 μm produced by high-ratio differential speedrolling, the high strength was attributed to grain-size andtexture strengthening, while the high ductility wasresulted from suppression of inhomogeneous twinning andincreased strain-rate-sensitivity.(2995)

Strain monitoring of composite steelgirder bridge using distributed opticalfibre sensor systemH.J. Yoon et al.In this paper, longitudinal strain distribution of thecomposite steel girder bridge is measured directly usingoptical fibre sensor system based on Brillouin scatteringwhen the vertical load is added. This sensor system usesthe BOCDA method to generate the Brillouin scatteringsignal at a selected location.(3315)

Study of an ankle prosthesis forchildren: adaptation of ISO 10328 andexperimental testsC. Colombo et al.Object of study is an ankle prosthesis for transtibialamputees, designed for children. A discussion on theadaptation of the standard to the test case is presented.Experimental results are discussed, considering fourdifferent types of tests: static proof and ultimate tests,fatigue tests and static torsion tests.(6003)

Tensile and high cycle fatigue tests ofNiCo thin filmsJ.H. Park et al.(3228)

The Case study for tension test RRT inKoreaU. B. Baek et al.In this study, several testing organization was RRT testingin Korea to the ability of the tensile test, to thereliability of testing machine and to assessment the skilllevel of a tester. Also propose each institution's problemsand improvements on the basis of RRT test results.(3934)

Wed8

81

Poster SessionThe Effect of Residual Stresses on theFracture Behaviour of a Cracked Bodyunder Mixed Mode Loading ConditionK. Sedighiani et al.Two types of butt welds are assumed and the correspondingresidual stresses are estimated using 3-D numericalanalysis. Then, the effect of residual stresses on thecrack tip parameters are calculated for complete range ofmode mixities from pure mode I to pure mode II and fordifferent crack lengths.(3595)

Thermo-Mechanical Analysis of Hot ShapeRolling of Steel by a Meshless MethodU. Hanoglu, S. Islam, B. SarlerThe numerical modeling of hot shape rolling of steel billetis represented by using a meshless Radial Basis functionCollocation Method (RBFCM). The physical model consists ofcoupled thermal and mechanical models. The material isassumed to behave elastic or ideally plastic. A simplebenchmark solution is compared with FEM based commercialcode DEFORM.(3819)

Transient Temperature Distribution forSAW ProcessA. Ghosh et al.The aim of the paper is to derive an analytical solution topredict the transient temperature distribution on the plateduring the process of Submerged Arc Welding.An analyticalsolution is obtained from the 3D heat conductionequation.It is observed that the predicted temperaturevalues are in good agreement with the observed temperaturevalues.(3649)

Viscoelastic vibration dampingidentification methods. Application tolaminated glass.J. Barredo et al.The objective of this paper is to evaluate the influencethat external factors exert on modal identification oflaminated glass beams. A laser measuring device is used toeliminate accelerometers and their connection cables.Testing is repeated for monolithic glass to take intoaccount the effect of the glass layers.(3735)

The Effect of T-Stress on the BrittleFracture under Mixed Mode LoadingK. Sedighiani et al.In this paper, the conventional fracture criteria, namelyMTS criterion, S-criterion, T- criterion, and M-criterionare modified to take into account the effect of T-stress.The results from various criteria are then compared withthe earlier experimental results for PMMA subjected tomixed mode loading.(3562)

Three-dimensional transient rollingcontact analysis of similar elasticcylindersD.-H. Lee et al.In this paper the steady-state and transient rollingcontact problem of three-dimensional elastic bodies hasbeen studied. The variation of tangential traction andstick-slip region on rolling contact surface were obtainedusing the finite element method. The three-dimensionaldistribution of tangential traction and contact stresses onthe contact surface are investigated.(3397)

Tube Expansion as Impact Energy AbsorberA.Aljehani,A.Aljinaidi(2375)

Evaluation of Interfacial BondingStrength between Laser Textured MetalCoping and PorcelainM. K. Son, H. C. ChoeIn this in-vitro study, to evaluate the effect ofmechanical texturing of cast metal alloy for theinterfacial bonding strength, sandblasting with Al2O3 andlaser surface texturing in two different metal alloys werecompared. After the bonding test, FE-SEM was used toexamine the fracture site and interface between texturedmetal alloys and porcelain.(3129)

The effects of nanoparticles on tensileand compressive behaviour of AZ80magnesium alloy during warm deformation:Experimental study and mathematicalmodellingF. Fereshteh-Saniee et al.The deformation behavior of AZ80 magnesium alloys has beeninvestigated in various temperature and strain rate rangeby means of tension and compression tests. Mathematicalmodel has been developed to predict the stress-straincurves based on a phenomenological representation of theshape of the stress-strain curves and the traditionaltheories for constitutive equations which incorporate thepower low.(3845)Time dependent embrittlement ofpolycrystalline Ag by liquid GaK.Sakai, H. KoizumiTensile tests were performed on polycrystalline Ag incontact with liquid Ga. Fracture stress and strain werereduced, which is an example of the liquid metalembrittlement. The degree of embrittlement depends on thecontact time. This is partly due to penetration of Ga atomsinto grain boundaries of Ag.(3346)

Uncertainty Factors and Method ofReducing Temperature Gradient on theSpecimen in the High Temperature FatigueProterties MeasurementJ.C. Park, J.H. Kim, J.J. LeeThis study introduces the uncertainty factors and themethods to adjust temperature gradient demanding each teststandard using the induction heating system for the hightemperature fatigue test include thermo-mechanical fatiguetest.(3865)

Defect tolerance of a gamma titaniumaluminide alloyM. Filippini et al.The fatigue properties of a Ti-48Al-2Cr-2Nb alloy producedby EBM has been examined by conducting HCF tests and FCGtests. Fatigue tests with artificial defects have been alsoperformed and a model based on the small crack approach isproposed in view of application to design of gas turbineblades.(8003)

The Evaluation of Micro-Pit Life withthe DBR method for Rolling-SlidingContactS. M. Moon, T. W. Kim, Y. J. ChoBy quantifing the failure rate of damaged surfaces ofmicro-pitting occurrence, the DBR(Dark and Bright Ratio)method was effectively implemented to evaluate surfacestrength of micro-pitting growth.(3833)

Transient Analysis of Collinear Cracksunder Anti-Plane Dynamic LoadingK. C. Wu, J. C. ChenA homogeneous linear elastic body containing multiplecollinear cracks under anti-plane dynamic load isconsidered. An integral equation is derived and the dynamicstress intensity factor associated with each crack tip iscalculated. Comparison of the numerical result with theanalytic solution shows that the present method is highlyaccurate.(2992)

Viscoelastic repetitive creep andrecovery in bituminous materialsJ.Stastna, L. Zanzotto, G.PolaccoRepetitive creep and recovery tests in asphalt and asphaltpaving mix are studied. The stretched exponential type ofcontinuous retardation spectrum is defined and used for thecalculation of creep compliance function in repetitiveshear and tensile creep and recovery experiments.(4588)

Change Stability Configurations toEndothelial CellsM.Buonsanti, A.PontariApplying the elastic rod theory, modified for the proteinstructures, a model has been developed considering themacromolecule inside the flexible rod and calculatingequilibrium and stability just over one segment. Supposingthe protein structure as formed by chains with non monotonelaw, deformation states and energy surplus we find.(2997)

Wed8

82

Poster SessionInfluence of fatigue damage on the mech-anical behaviour of 2024-T3 aluminumalloyA. May et al.Our work is devoted to study the influence of cycliqueloading on the mechanical properties of aluminum alloy2024-T3. The evolution of the Young modulus, yield stress,lengthening, micro-hardness, electrical resistivity andmicrostructural investigation in SEM are the principalinvestigated caracteristics. The results obtained showthat, in opposit of electrical resistivity, the mechanicalproperties are not very sensitive to fatigue damage.(3016)

The consequence of different loadingrates in elasto/viscoplasticityF. De Angelis et al.The influence of different loading programs on theinelastic behaviour of rate-sensitive elasto/viscoplasticmaterials is illustrated with specific numerical examples.Different values of the loading rates are considered.Numerical computations and results are reported whichillustrate the significance of the loading program on thenon-linear response of rate-dependent elasto/viscoplasticmaterials.(4589)

Molecular dynamics study on micro-jetfrom metal surface under shock loadingJ. L. Shao, P. WangWe have investigated the dynamical properties of micro-jetfrom a grooved aluminum surface by molecular dynamicssimulations. The variation of micro-jet mass and morphologywith increasing shock pressure is obtained. The occurrenceof release melting can intensify the jetting evidently.(3923)

Fabrication Processing and Evaluation onThermal Shock Damage of Cf/SiC CompositeJ. K. Lee et al.The objective of this paper is to investigate thecharacterization of C/SiC composite containing nano scaleSiC powder. The C/SiC composite was fabricated by a liquidphase sintering (LPS) process with commercial SiC powder ofabout 30 nm. The matrix region for C/SiC composites priorto the sintering were prepared by a slurry infiltrationtechnique.(3216)

Failure Analysis of a Component Due toHydrogen EmbrittlementA. Uehara et al.(3177)

Crack Growth Studies in Railway Axlesunder Corrosion Fatigue: Full-scaleExperiments and Model ValidationS. Beretta et al.(8002)

Development of Novel Hydroxyapatite-polymer Composites as Hard TissueReplacementsA.-H.I.Mourad, Y.E.Greish(3698)

Tensile Deformation and FractureProperties of Irradiated SA533B SteelJ.W.Kim, T.S.ByunThis study evaluated true stress-strain curves ofirradiated SA533B steel using finite element simulation andinvestigated the effects of irradiation dose on thedeformation behavior and tensile fracture properties.(3569)

Fracture Characteristics of DentalCeramic Crown according to ZirconiaCoping DesignH. Y. Cho et al.Fracture characteristics of the ceramic crown according tothe zirconia coping design have been researched usingvarious experimental methods. In conclusion, according tothe fracture test, the more thickness of zirconia collar,the higher fracture strength of veneering porcelain. Thus,zirconia coping design with 2.0mm marginal collar width isrecommended for both functional longevity and esthetics ofzirconia-ceramic restoration.(3126)

Laser welding of Al-Si coated hotstamping steelC. Kim,M.-J. KangHot stamping steel, which is a boron alloyed steel, has astrength greater than 1500 MPa and a thin Al-Si basedcoating layer is applied to the steel surface to preventoxidation. In this study, metallurgical characteristics oflaser weldments were investigated in hot stamping steelplates with and without an Al-Si coating layer.(3072)

Mechanical properties of precipitationstrengthening Cu-base alloys highlydeformed by ARB processR. Monzen et al.The enhancement of strength of Cu-1.2wt% Ni-0.2wt%Be-0.1wt% Zr and Cu-1.4wt% Ni-0.25wt% P-0.1wt% Zr alloyswas tried by combining ARB process by 5 cycles and aging atabout 400°C. The grain sizes of the alloys, deformed byARB process, were refined down to 0.4mm. Appropriate agingand ARB process produced the alloys highly strengthened.(3244)

Authors Index

84

Abadyan, M. 78

Abadyan, M.R. 77

Abasi, M. 58

Abazari, R. 30

Abbasi, M. 66

Abdi, J. 73

Abdullah, N.N. 41

Abdullah, S. 41

Abe, F. 42

Aberkane, M. 61

Abu Seer, T. 79

Abu-Jdayil, B. 48

Achintha, M. 43

Acierno, D. 47

Adachi, T. 34

Adali, S. 42

Adam, F. 48

Adhikari, S. 68

Aghbash, A.N. 66

Ahmad, N. 40, 65, 66

Ahmadi, H. 61

Ahn, K.H. 80

Ahn, S.B. 26

Ahn, S.T. 22

Ai, A.H. 20

Airoldi, A. 73, 78

Aivazzadeh, S. 34

Ajdari, A. 61

Akebono, H. 27

Akita, M. 26, 58

Al Tamimi, A.M. 79

Al-Mihaidi, R. 59

Al-Nuaimi, L. 48

Al-Omari, S.A. 48

Al-Zubaidy, H.A. 59

Alarcón, E. 41

Alashti, R.A. 48

Alava, M. 49

Alberto, A. 74

Albinmousa, J. 24

Alegre, J.M. 35

Alfano, M. 34

Aliha, M.R.M. 43

Aljehani, A. 81

Aljinaidi, A. 81

Allais, L. 20

Allevato, C. 35

Almansba, M. 16

Altinok, E. 59

Altus, E. 36

Alvarez-Armas, I. 21, 22

Ancelet, O. 20

Andersons, J. 46

Ando, S. 20, 25

Andrieux, J. 60

Anes, V. 36

Aneziris, C.G. 19

Antonaci, P. 74

Antretter, T. 25, 38

Aono, Y. 20, 48

Aoyagi, N. 20

Araújo, D. 72, 73

Arghavani, J. 69

Argüelles, A. 51, 64

Arimitsu, Y. 79

Armas, A. 21

Arnaboldi, S. 67

Arsenault, R. 76

Arsic, M.A. 69, 75

Arslan, N. 23

Arulkumar, M. 21

Arwade, S. 32

Ashcroft, I.A. 42

Aslan, O. 19

Atas, A. 23

Auricchio, F. 69

Auslender, F. 37

Autuori, P. 72

Avanzini, A. 48

Ayaso, F.J. 76

Ayatollahi, M.R. 37, 43, 77

Ayer, R. 60, 74

Aymerich, F. 51

Azadi, M. 65

Azari, Z. 31

Azarifar, V. 40

Babaee, S. 61

Bachmann, D. 16

Bacroix, B. 23

Badisch, E. 76

Badnava, H. 32, 81

Bae, D.H. 39, 78

Bae, D.S. 27, 82

Bae, J.H. 26

Baek, D.-C. 63

Baek, U.-B. 31

Baek, U.B. 80

Bagherifard, S. 76, 80

Baldi, A. 73, 78, 79

Balinski, A. 47

Balle, F. 20

Bandini, M. 39, 41

Bang, W. 26

Bange, M.E. 77

Baptista, C.A.R.P. 42

Baptista, R. 22, 33, 43, 77, 80

Bar, R. 33

Baragetti, S. 42, 65, 66

Barakati, A. 19, 75

Barannikova, S.A. 21

Barati, E. 39

Barbié, L. 23

Barkaoui, A. 46

Barredo, J. 18, 81

Barski, M. 34

Barsoum, I. 31, 36

Barth, F.J. 46

Bartolomé, J.F. 35, 79

Basan, R. 27, 79

Basu, P.K. 59, 60

Beaven, P. 34

Becker, W. 34

Beghini, M. 64

Beheshti, S. 75

Belhadj, T. 73

Belingardi, G. 39

Belkhabbaz, A. 23

Bellenger, V. 40

Bellin, B. 40

Belnoue, J. 37

Belouchrani, M.A. 82

Belzunce, F.J. 35, 48

Bemporad, E. 37

Benedetti, M. 41

Beneduce, F. 30

Benichou, I. 60

Benini, K.C.C.C. 35

Benoit, A. 23

Benssediq, N. 38

Beran, P. 18

Berdin, C. 24, 66

Beretta, M. 62

Beretta, S. 27, 81, 82

Bergamo, S. 38

85

Bergers, L. 65

Berkovic, L. 77

Bernasconi, A. 46, 61

Bertini, L. 64

Berto, F. 30, 37

Beto, F. 39

Bettamer, A. 46

Bettini, P. 73, 78, 79

Bhaduri, A.K. 22

Bianchi, D.M. 31

Bianchi, R. 42

Bidkhori, E. 61

Biel, A. 74

Biermann, H. 18, 19

Bigorgne, L. 23

Bilge, A.N. 58

Blakeley, J.E. 64

Blanc, V. 23

Blažek, D. 77

Bleck, W. 58

Blázquez, A. 58

Blès, G. 46

Bobrov, P. 19

Boccafogli, E. 74, 80

Bochniak, W. 48

Bodelot, L. 72

Boehm, R. 47

Boellinghaus, T. 33

Boin, M. 60

Boivin, D. 35

Bokuvka, O. 24

Bolduc, M. 76

Bolognesi, G.H. 31

Bolzoni, F. 35

Bombac, D. 34

Bonhomme, J. 51, 64

Boniotti, J. 46

Bordegoni, M. 78

Borges, L.A. 43

Bornert, M. 37

Borrelli, R. 69

Bose Filho, W.W. 30

Botta, W.J. 80

Bouaza, A. 59

Boukhechba, F. 46

Bouler, J.-M. 46

Bourgeois, N. 40

Bouteghrine, Y. 82

Bower, A. 34

Bošnjak, S.M. 69, 75

Bradác, M. 63

Branco, C. 22

Branco, C.M. 43, 79

Brandt, M. 32

Bravo, P.M. 35

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Chudnovsky, A. 31, 59

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Manes, A. 72, 73, 78

Mansourinejad, M. 22

Manti, V. 58

Mantic, V. 22

Mao, T. 67

Mapelli, C. 78

Maranon, A. 42

Marcadon, V. 35

Marcelo, A.L. 76

Marchesin, E. 74, 80

Marco, Y. 36, 46

Marinelli, C. 22

Marotzke, C. 60

Marques, A.T. 17

Martin, C.L. 21

Martin, G. 20

Martins, R.F. 67, 79

Martins, S.A. 43

Mary, C. 30

Maslak, T. 24

Maslov, V.P. 49

Masson, R. 23

Mastinu, G. 73, 75

Materna, A. 16

Mathieu, F. 38

Matlock, D.K. 24

Matos, J.B. 79

Matos, J.C. 76

Matovic, B. 78

Matsueda, T. 20

Matsumoto, E. 66

Matvienko, Y.G. 31

May, A. 82

Maynadier, A. 67

Mazière, M. 19

Mazzola, M. 60

Mazzoleni, G. 46

Mazzu', A. 66

Mašek, B. 76

McMullan, P.J. 73

Mcshane, G.J. 51

Mecitoglu, Z. 59

Meftah, F. 72

Mendia, L. 30

Meraghni, F. 40

Mertiny, P. 22, 76

Meszaros, I. 42

Meza-García, E. 34

Michinaka, K. 35

Michler, J. 49

Mikami, K. 17

Mikami, Y. 73

Miksic, A. 49

Mikulová, D. 76

Milanese, A.C. 31

Milella, P.P. 42

Mille, P. 62

Milwich, M. 60

Miléo, P.C. 33, 41

Minami, F. 33, 37

Minami, K. 33

Mines, R. 36

Minoshima, K. 33

Mirsayar, M. 77

Mirz, M. 38

Mirzakhani, B. 22

Misaka, Y. 58

Mitrin, B.I. 17

Miyashita, Y. 20, 49

Mocellin, K. 66, 68

Mochizuki, M. 73

Mochizuki, T. 19

Mocilnik, V. 40

Modano, M. 82

Modarres, M. 79

Modler, K.-H. 48

Modniks, J. 46

Mohaghegian, I. 51

Mohamed Rehan, M.S. 58

Mohamed, A.A. 26

Mohammadi, A.H. 59

Mohammadi, B. 25, 43, 62, 75

Mohammed, R. 32

Mohd, S. 49

Moinereau, D. 24, 66

Mokhtar, H. 35

Mokso, R. 48

Molki, A. 36

Mollón, V. 51, 64

Mombelli, D. 78

Monelli, B.D. 64

Montoro, S.R. 39

Monzen, R. 82

Moon, M.W. 50

Moon, S.M. 75, 81

Moon, Y.H. 42

Moosbrugger, E. 36

Moreira, M.F. 30

Moreto, J.A. 30

Morganti, S. 69

Moriconi, C. 32

Moridi, A. 65

Morimoto, H. 18

Morishige, K. 16

Moroni, F. 32, 80

Mosayebnejad, J. 81

Mosayebnezhad, J. 81

Moskal, G. 78

Mosler, J. 30

Moulin, G. 74

Mounanga, P. 50, 75

Mourad, A.-H.I. 17, 22, 48, 59, 82

Mousavi, S.M. 33, 79

Movahedi, M. 20

Moverare, J. 23, 30, 32

Moya, J.S. 35, 51, 79

Moyne, S. 46

Msolli, S. 33

Muc, A. 48

Mueller, R. 16, 46, 60

Muhic, T. 34

Mulinari, D.R. 31, 33, 41, 42, 77, 78

Murae, S. 48

Murai, T. 21

Murakami, K. 16

Murakami, M. 47

Murakawa, H. 20

Murugan, M.S. 50

Musalimov, W.M. 79

Musalimova, L.N. 79

Mutoh, Y. 20, 24, 34, 49

MuŠEvic, I. 77

Månsson, T. 30, 32

Mösenbacher, I A. 36

Na, Y. 18

Nabiran, N. 27

Naderi, M. 58, 59

92

Nadot, Y. 38

Nadot-Martin, C. 38, 61

Nagaoka, S. 24

Nagasawa, T. 63

Nagata, K. 34

Nagy, G. 36

Nahm, S.-H. 31

Nahm, S.H. 67, 80

Naito, M. 19

Najafi, H. 20

Nakagawa, K. 16, 17

Nakai, Y. 17, 47

Nakajima, M. 26, 33

Nakamachi, E. 18, 65

Nakamura, T. 34

Nakamura, Y. 65

Nakasone, Y. 39, 74

Nakatani, A. 35, 41

Nakatani, M. 33

Nam, J.-y. 43, 64

Nani Babu, M. 22

Naoe, T. 74

Nazé, L. 20

Neilson, R. 26

Ni, P. 78

Nian, F.L. 40

Nicoletto, G. 58

Niendorf, T. 18

Nikolova, M.P. 62

Nishida, A. 37

Nishikawa, S. 73

Nissan, A.B. 47

Noban, M. 24

Noda, N.-A. 17, 35, 80

Noghrehabadi, A. 69, 73, 77

Noguchi, H. 16, 20, 22, 26

Noguchi, Y. 36

Nolting, A.E. 76

Nordendale, N.A. 59, 60

Nourbakhsh, S.H. 66, 72

Novy, F. 24

Nový, Z. 79

Nuhi Faridani, M. 79

Nunes, L.S. 43

Nussbaum, J. 65

Obrtlík, K. 18, 65

Obuchi, Y. 65

Odanovic, Z.D. 75

Ogawa, K. 65

Oger, F. 23

Oh, D. 26

Ohata, M. 33, 37

Ohguchi, K.-I. 32

Ohtsuki, A. 63

Ojima, Y. 16

Okabe, T. 65

Okada, H. 36

Oksuz, K.E. 50

Oliferuk, W. 49

Oliva, V. 16

Oliveira, T.A. 41

Olszyna, A. 48

Orchowski, N. 32

Orenel, H. 59

Orthaber, M. 38

Oshida, Y. 26

Oskouei, R.H. 36

Oskouyi, A.B. 22

Osmani, H. 38

Osuka, Y. 34

Otero, E. 65

Otsuka, Y. 20, 24, 49

Ould Ouali, M. 16, 61

Owolabi, G.M. 16

P Hong, I. 22

P Sarah. 42

Paiva, R.L.M. 42

Paknahad, A. 48

Palcek, P. 24, 77

Palkowski, H. 60

Panera, M. 48

Panoskaltsis, V.P. 19

Pantelejev, L. 25

Pantelides, C.P. 64

Paolinob, D. 39

Papathanassiou, D. 46

Parashar, A. 76

Parida, P.K. 22

Park, C. 64

Park, C.G. 60

Park, C.H. 22

Park, H. 66

Park, H.-Y. 77

Park, H.M. 69

Park, I.-M. 47

Park, I.M. 24

Park, J.-C. 62, 74, 77

Park, J.C. 22, 81

Park, J.H. 63, 80

Park, J.S. 76

Park, J.T. 22

Park, K.-T. 80

Park, K.T. 35

Park, S.H. 18

Park, S.S. 23, 27

Park, Y. 65

Park, Y.-H. 47

Park, Y.B. 80

Park, Y.H. 24

Park, Y.S. 39, 78

París, F. 22, 58

Pasquero, G. 81

Pasquino, M. 82

Passilly, B. 35

Patriarca, L. 27, 81

Paulino, G.H. 34

Pazderová, M. 63

Pecat, O. 27

Peel, M. 60

Pegoretti, A. 67

Peirs, J. 34, 38, 75

Pekcan, O. 49

Pelletier, H. 17, 62, 78

Pereira, H.F.S.G. 17

Peroni, L. 73

Petkovic, Z.D. 69

Petrenec, M. 18, 30, 38, 69

Petrogalli, C. 62, 66

Petukhov, B.V. 47

Pezeshki-Najafabadi, S.M. 26, 32, 81

Pezzani, F. 76

Peñuelas, I. 35

Pham, M.-S. 17

Phan, M.T. 72

Pierantoni, M. 46

Pietrzak, K. 48

Pinter, G. 36

Pinto, H. 32

Pinto, J. 61

Pires, G.H. 39

Pirling, T. 60

Pirondi, A. 32, 42

Planck, H. 60

PlaninŠEk, O. 77

93

Ploshikhin, V. 41

Pluvinage, G. 31

Podrábský, T. 65

Polacco, G. 81

Polák, J. 18, 20, 30, 38, 65, 69

Ponce, C.A. 31

Poncelet, M. 67

Pontari, A. 81

Popoff, F. 35

Porubcan, J. 77

Posarac, M. 78

Pospíšilová, S. 65

Potocnik, R. 77

Pouriayevali, H. 46

Poza, P. 62

Pramiladevi, M. 73

Prebil, I. 27, 38, 79

Predan, J. 26, 40, 50

Presser, M. 37, 62

Previati, G. 75

Previtali, B. 64

Prisacariu, C. 46, 77, 80

Providakis, C.P. 49

Przybilla, C. 51

Pugno, N.M. 46

Qian, X. 16

Qu, C.Y. 50

Quaresimin, M. 46, 51, 73

Rabet, L. 38, 77

Rafray, A. 35

RahimI Dehgolan, F. 74

Raj, K.H. 32

Rajendran, A M. 30

Rajyalakshmi, U. 73

Ramji, K. 73

Rangelov, T. 16

Raninger, P. 38

Raoult, I. 36

Raymont, D.R. 66

Re, G. 76

Reali, A. 69

Regazzi, D. 75, 82

Reis, L. 36, 74

Remy, L. 23

Ren, W. 73

Renault, P.O. 58

Renton, N.C. 26

Rentsch, R. 27

Rezaeepazhand, J. 37

Rhee, K. 26

Riccio, A. 69

Richins, W.D. 64

Rico, Á. 65

Rigobert, S. 72

Ripamonti, F. 74

Risbet, M. 74

Ritasalo, R. 47

Rivera, S. 48

Rivolta, B. 62, 65

Rizzi, M. 82

Robinson, F. 47

Rocha, G.J.M. 33

Rochet, N. 46

Rodichev, Y.M. 49

Rodrigues, E.F. 31, 78

Rodriguez, J. 65

Rodriguez-Suarez, T. 35, 51, 79

Rodríguez, C. 35

Rokbi, M. 38

Roland, T. 78

Romagnoli, F. 30

Roos, E. 48

Rosti, J. 49

Rota, E. 42

Rousseau, J. 35, 58

Roux, S. 38

Royer, R. 76

Rubesa, D. 27

Ruchert, C.O.F.T. 30

Rudnik, Y. 41

Ruggieri, C. 31

Rupin, N. 23

Russo, A. 65

Russo, P. 47

Rutecka, A. 48

Ryeol, K.w. 66

Ryu, J.S. 39, 78

Ryu, W.-S. 32

Rzychon, T. 77

Rödig, M. 40

S Sjostrom. 63

Saad, A.A. 19

Saadati, S. 48

Saavedra Flores, E.I. 50, 68

Sabbadini, S. 81

Sabnis, P.A. 19

Sabouri, H. 61

Sadrmomtazi, A. 33

Sahanobish, K. 31

Sahin, Y. 50

Sahraei, H.R. 81

Saintier, N. 38

Sakagami, T. 47

Sakaguchi, Y. 36

Sakai, K. 81

Sakai, T. 73

Sakakibara, A. 16

Sakakibara, M. 65

Sakamoto, H. 18, 65, 74

Sakane, M. 63

Sakihara, M. 33

Sakimoto, T. 33

Sala, G. 73, 79

Salas, R. 18

Saleh, T.A. 77

Salej, A. 34

Salem, N. 50

Salerno, A. 76

Salmi, M. 37

Salviato, M. 51, 73

Sandor, L. 26

Sangirardi, M. 78

Santus, C. 39

Sarkar, P.K. 74, 79, 81

Sarler, B. 81

Sasaki, D. 22

Sasaki, K. 32, 46, 74

Sasikala, G. 22

Sathis Kumar, S. 60

Sato, M. 47

Sato, S. 73

Sator, C. 34

Sauzay, M. 21, 74

Scaramuzzino, F. 69

Scarpa, F. 68

Scheel, M. 60

Scheider, I. 30

Schmauder, S. 41

Schmidt, A. 40

Schmidt, P.N.S. 59

Schneider, Y. 48

Scholz, A. 67

Schryvers, N. 38

Schuler, X. 48

94

Scirè Mammano, G. 67

Sciuccati, A. 35, 76, 78

Scopelliti, F. 72

Scortanu, E. 46, 77, 80

Scorza, D. 46

Sebastiani, M. 37

Sedighiani, K. 72, 81

Seghir, R. 72

Seibi, A. 79

Seibi, A.C. 36

Seifi, R. 16, 40

Sellier, A. 21

Sellitto, A. 69

Semba, H. 36

Sencic, B. 26

Seo, J. 68

Seo, J.-W. 81

Seo, J.H. 69

Seok, J. 80

Seol, J. 64

Seol, J.B. 60

Seong-Jong, K. 63

Sergejev, F. 41, 79

Serizawa, H. 20

Seung-Jun, L. 63

Seyed Reihani, S.M. 20

Seyedkashi, S.M.H. 38

Sglavo, V.M. 58

Shah, B.M. 34

Shanthi, G. 22

Shao, J.L. 75, 82

Sharma, R.S. 32

Shashankdutt, B. 22

Shen, Y. 20

Shi, L. 16

Shi, S.Q. 35

Shiino, M.Y. 39, 43

Shim, M.S. 26

Shim, V.P.W. 46

Shimamura, Y. 16

Shin, H.-S. 31

Shin, K. 27

Shin, K.B. 69

Shin, K.S. 72

Shin, S.Y. 26, 58

Shinoda, K. 60, 73

Shiozawa, D. 47

Shiozawa, K. 21

Shlyannikov, V.N. 43

Si Hadj Mohand, C. 78

Sicot, O. 35

Signoretti, G. 72

Sills, R.B. 30

Silva, G. 62, 65

Silva, J.M. 43

Silva, M.L.N. 80

Silveira, J.L. 59

Sim, Y.B. 73

Simon, P. 23

Simonsson, K. 23, 30

Simsir, M. 50

Singh Raman, R.K. 16, 24

Singh, P. 32

Sipião, B.L.S. 42

Sire, R.A. 67

Sjöström, S. 23, 30

Skarabot, M. 77

Sklenicka, V. 40

Slawson, T. 60

Smaga, M. 17, 18

Smirnov, A. 35, 79

Soares, B. 74

Sob, M. 62

Sobol, B.V. 37

Soekrisno, R. 18

Sogabe, K. 73

Sogabe, Y. 61, 79

Sohn, Y.H. 76

Solazzi, L. 66, 79

Soldatos, D. 19

Soltani, N. 72

Son, M.K. 76, 78, 81, 82

Song, G. 61, 67

Song, G.S. 74

Song, H. 51

Song, K.-N. 77

Song, K.Y. 80

Song, S.A. 79

Song, X. 37

Sonsino, C.M. 30

Soppa, E. 48

Soprano, A. 68

Soriano, M. 81

Souki, I. 16

Sousa, L. 74

Soutis, C. 23

Souza, J.V. 77

Souza, P.S. 78

Souza, R.C. 43

Spaggiari, A. 42

Spagnoli, A. 46

Spear, A.D. 25

Spence, T.W. 40

Srcic, S. 77

Stafström, S. 49

Stamm, B. 22, 49

Starke, P. 21

Stastna, J. 81

Steeb, H. 48

Stefanelli, U. 69

Steimberg, N. 46

Stigh, U. 74

Stoess, A.Bueter.N. 48

Stoschka, M. 27

Stronge, W.J. 51

Su, F. 34

Sub, C.w. 66

Suga, K. 17

Sugeta, A. 27

Suh, B.C. 26

Sullivan, J. 47

Sun, D.L. 18, 76

Sun, W. 18, 19, 21

Sung, S.Y. 76

Suzuki, G. 31

Suzuki, S. 60, 73

Suzuki, Y. 16, 36

Svoboda, M. 40

Szmerling, J. 16

Söderberg, O. 47

Sönnichsen, S. 16

Sørensen, B.F. 30

Tadi Beni, Y. 39, 77

Tagawa, T. 37, 47

Taher, H. 48

Taherkhani, H. 48

Taillebot, R.L.V. 69

Tajik, N. 72

Takada, H. 17

Takagawa, Y. 82

Takahashi, T. 21

Takaisi, X.Lan.K.-T. 80

Takamatsu, T. 47

Takase, Y. 17

95

Takemura, K. 77

Tamaogi, T. 61, 79

Tamin, M.N. 34

Tanabe, H. 47

Tanaka, K. 65

Tanaka, M. 46

Tanegashima, R. 27

Tanner, D.W.J. 18, 19

Tarallo, E. 73

Tasdemir, M. 75

Tasdemirci, A. 33, 46

Tayon, A. 34

Tcharkhtchi, A. 40

Teixeira, A. 41

Terada, D. 82

Terai, M. 33

Teratani, T. 16

Tercelj, M. 34

Tetik, T. 23

Thaler, M. 27

Theisen, W. 27

Thiaudière, D. 58

Thieme, M. 47

Thoben, K.-D. 64

Thomser, C. 40

Thouless, M.D. 30

Tipping, D. 40

Tirry, W. 38

Tita, V. 17

Toda, H. 36

Tohgo, K. 16

Tokaji, K. 26

Tokimasa, K. 34

Tomasella, A. 63

Tomita, Y. 19

Tomiyama, S. 20

Topçu, M. 23

Tordini, F. 42, 65, 66

Toribio, J. 39, 76

Torrecillas, R. 51

Torres, D. 72, 73

Torres, M.A.S. 43

Torsello, G. 73

Touchard, F. 61

Trasatti, S. 82

Tregubov, N.F. 49

Triantafyllou, S.P. 19

Triawan, F. 34

Trilling, L.H. 47

Triyono. 18

Trojanová, Z. 18, 77

Trubchik, I.S. 17

Tsuchida, Y. 31

Tsuji, N. 82

Tsurekawa, S. 18

Tsushida, M. 20, 25

Tu, H.Y. 41

Tuissi, A. 67

Tumanov, A.V. 43

Tunusoglu, G. 33

Turan, A.K. 33

Turatsinze, A. 21

Tyczynski, T. 47

Török, I. 36

Türkmen, H.S. 59

Ueda, M. 22

Uehara, A. 26, 82

Uehara, A.Y. 76

Uehara, T. 72

Uematsu, Y. 16, 26, 33, 58

Uesugi, K. 36

Ugur, S. 49

Ujiie, Y. 58

Uludag, N. 59

Ulug, E. 75

Ural, A. 32

Urbano, M.F. 69

Ure, J. 40

Ushijima, K. 35

Utiyama, R. 82

Utiyama, R.C. 76

Uzun, F. 58

Valente, S. 74

Valentini, E. 39

Valeš, M. 63

Vallone, G. 79

Vallée, T. 22, 49

Valsecchi, B. 64

Vanegas, E. 66, 68

Vang, M.S. 80

Varga, M. 76

Varna, J. 58

Vavrik, D. 62

Vaziri, A. 50, 61

Velea, M.N. 62

Venkitanarayanan, P. 18

Venugopal, S. 22

Vergani, L. 35, 74, 76, 80

Vergara, D. 39

Verleysen, P. 34, 38, 75, 80

Verlinden, B. 18

Verni, G. 74, 80

Verpoest, I. 18, 78

Vezzù, S. 74

Viegas, J.C. 67

Vieira, A.C. 17

Viljus, M. 79

Villar, M. 72

Villar, M.P. 73

Viña, I. 51, 64

Viña, J. 51, 64

Vogel, F. 30

Volkov Husovic, T. 78

Voorwald, H.J.C. 27, 31, 35, 39, 43, 59, 77

Vormwald, M. 36

Vu, Q.H. 35

Vychytil, J. 19

Všolák, R. 40

Wada, Y. 37

Wagner, G. 20

Wagner, M.F.X. 18

Wallin, K. 39

Wang, B. 62

Wang, D. 48

Wang, J. 18, 76

Wang, J.G. 18, 20

Wang, P. 75, 82

Wang, Q. 18, 76

Wang, Q.J. 34

Wang, S. 78

Wang, X. 66

Wang, Y.N. 22

Wang, Z.C. 20

Wang, Z.W. 24

Watanabe, T. 18, 31

Weber, M. 36

Weber, S. 27

Weber, U. 41

Weider, M. 19

Weidner, A. 18, 19

Weinand, Y. 22, 49

Weiss, K. 58

Wesley, S.J.H. 34

Wevers, M. 18

96

Whittaker, M.T. 47

Whitworth, H.A. 16

Wimpory, R.C. 60

Winkelmann, H. 76

Witz, J.-f. 72

Won, H.Y. 82

Won-Seok Song. 59

Wong, K.J. 34

Woo, J. 78

Wosniok, W. 19

Wozniak, J. 48

Wu, H. 26

Wu, K.C. 81

Wu, L. 64

Wu, L.-Z. 60

Wu, L.Z. 24, 62

Wu, M.S. 48

Wu, Z. 79

Wu, Z.Q. 61, 79

Wuest, T. 64

Xia, Z. 34, 61

Xiao, J.X. 76

Xiao, X. 51

Xin, K. 27, 34

Xiong, J. 62, 64

Xu, Y. 78

Yada, T. 20

Yahia, N.B. 73

Yamamoto, T. 16

Yamashita, M. 25

Yamashita, Y. 25

Yang, H. 78

Yang, H.Y. 72

Yang, W. 16

Yano, H. 31

Yargi, O. 49

Yatomi, M. 42

Yazdi1, A. 37

Yeap, K.B. 37

Yekrangi, A. 72, 73

Yim, C.D. 22

Yim, S.O. 24

Yin, F.X. 18

Yin, S. 60

Yoo, K.B. 72, 74, 75

Yoon, D.H. 25

Yoon, H.J. 80

Yoon, J. 80

Yoon, N. 40

Yoshida, K. 42

Yoshimura, T. 73

Yoshizawa, M. 36

You, C.S. 40

Young, P.G. 66

Young-Cheon Kim. 59

Yousef, B.F. 17

Yu, M.H. 72

Yu, S.W. 50

Zacchia, F. 40

Zakerhaghighi, H. 81

Zakeri, M. 78

Zanoosh, R.Z. 33

Zanzotto, L. 81

Zappalorto, M. 30, 51, 73

Zavattieri, P. 34, 50

Zeleny, M. 62

Zeng, K.Y. 37

Zerovnik, A. 38

Zghal, S.B.A. 73

Zhang, H. 59

Zhang, S. 63

Zhang, Y. 34, 35, 80

Zhao, X.-L. 59

Zhou, K. 34

Zhou, Y. 18

Zhou, Z. 59

Zhou, Z.G. 37

Zhu, J. 37

Zhupanska, O.I. 19, 75

Zlámal, O. 40

Zrnic, N.D. 69

Zrnic, N.Ð. 75

Zuccarello, B. 65

Zuev, L.B. 17, 21

Detailed Programme Booklet

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