New FricRiveting of Polyetherimide / AA 2024-T351 Hybrid Joints · 2012. 6. 23. · Boeing 787....
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FricRiveting of Polyetherimide / AA 2024-T351 Hybrid Joints Fig. 4 Fig. 9 Fig. 7 • Process Temperature: - 0,5-0,95*T m- Al 2024 - thermal degradation of PEI. • Joint Performance: - Tensile - 60-93% of R mRivet . - Shear - 70% of R mPEI (A) Fig. 2: (A) Polymer matrix composite body panel bonded to steel frame in the Lamborghini Murciélago. (B) Volkswagen's 1L-car multi- material automotive concept. Fig. 3: Example of FricRiveting potential applications max max ) ( 3 2 V H V r P Q total ⋅ ⋅ + ⋅ ⋅ = η µ maximum tangential speed ( V max = ω . R ) kinematic friction coefficient max V µ ) ( r P normal pressure distribution polymer molten viscosity η H avg. thickness of the molten layer Microstructure Temperature Evolution Mechanical Properties Tensile Strength Lap Shear Strength Fig. 6 Fig. 1: Polymer-metal hybrid concepts of Airbus A350 and Boeing 787. Prof. Dr.-Ing. Sergio Amancio, Helmholtz-Zentrum Geesthacht, Institute of Materials, Materials Mechanics, Solid State Joining Processes, Adv. Polymer- Metal Hybrid Structures Motivation Increased selection of polymer-metal hybrid structures in the transportation industry as a tool for weight reduction and decrease of nocive gas emission FricRiveting – Principles of the Process Analytical Heat Input Model A new spot joining process for thermoplastics - lightweight alloys multi-materials structures (GKSS patent: US11/602868). Fig. 5 Properties of Polyetherimide (PEI) / AA 2024 Joints Summary and Conclusions Bonding mechanisms by mechanical interference and adhesion between polymer and metal Good tensile and shear strength due to macrostructural & microstructural changes related to high process temperature and deformation FricRiveting as new, simple and fast alternative for joining advanced plastics to lightweight alloys Fig. 8 Helmholtz-Zentrum Geesthacht • Max-Planck-Straße 1 • 21502 Geesthacht • Phone +49 (0)4152 87-2066 • Fax +49 (0)4152 87-2033 • www.hzg.de Contact: Prof. Dr.-Ing. S. Amancio – [email protected]
Transcript of New FricRiveting of Polyetherimide / AA 2024-T351 Hybrid Joints · 2012. 6. 23. · Boeing 787....
FricRiveting of Polyetherimide /AA 2024-T351 Hybrid Joints
Fig. 4
Fig. 9
Fig. 7
• Process Temperature:
- 0,5-0,95*Tm- Al 2024
- thermal degradation of PEI.
• Joint Performance:
- Tensile - 60-93% of RmRivet.
- Shear - 70% of RmPEI
(A)
Fig. 2: (A) Polymer matrix composite body panel bonded to steel frame in the Lamborghini Murciélago. (B) Volkswagen's 1L-car multi-material automotive concept.
Fig. 3: Example of FricRiveting potential applications
maxmax)(
32 V
HVrPQtotal ⋅
⋅
+
⋅⋅=
ηµ
maximum tangential speed( Vmax = ω . R )
kinematic friction coefficient
maxV
µ)(rP normal pressure distribution
polymer molten viscosity ηH avg. thickness of the molten layer
MicrostructureTemperature EvolutionMechanical PropertiesTensile Strength
Lap Shear Strength
Fig. 6
Fig. 1: Polymer-metal hybrid concepts of Airbus A350 and Boeing 787.
Prof. Dr.-Ing. Sergio Amancio, Helmholtz-Zentrum Geesthacht, Institute of Materials, Materials Mechanics, Solid State Joining Processes, Adv. Polymer-Metal Hybrid Structures
Motivation
Increased selection of polymer-metal hybrid structures in the transportation industry as a tool for weight reduction and decrease of nocive gas emission
FricRiveting – Principles of the Process
Analytical Heat Input ModelA new spot joining process for thermoplastics -
lightweight alloys multi-materials structures (GKSS patent: US11/602868).
Fig. 5
Properties of Polyetherimide (PEI) / AA 2024 Joints
Summary and ConclusionsBonding mechanisms by mechanical interference and adhesion between polymer and metalGood tensile and shear strength due to macrostructural & microstructural changes related to high process temperature and deformationFricRiveting as new, simple and fast alternative for joining advanced plastics to lightweight alloys
Fig. 8
Helmholtz-Zentrum Geesthacht • Max-Planck-Straße 1 • 21502 Geesthacht • Phone +49 (0)4152 87-2066 • Fax +49 (0)4152 87-2033 • www.hzg.deContact: Prof. Dr.-Ing. S. Amancio – [email protected]
