““Severing today’s vehicle Severing today’s vehicle materials & components”materials & components”

A primer for cutting evolutions A primer for cutting evolutions with today’s vehicleswith today’s vehicles

Me?Me? • David DalrympleDavid Dalrymple• 26 years in emergency services26 years in emergency services• Career- RWJUH EMSCareer- RWJUH EMS• Volunteer- Clinton EMS/RescueVolunteer- Clinton EMS/Rescue• Rescue Instructor for 16 years- Rescue Instructor for 16 years-

Vehicle Rescue is my specialtyVehicle Rescue is my specialty• TERC US – Education ChairTERC US – Education Chair• International certified International certified

extrication assessor-judged & extrication assessor-judged & lectured in US, Canada, UK, lectured in US, Canada, UK, Europe & South AfricaEurope & South Africa

• 2007 Harvey Grant award 2007 Harvey Grant award recipientrecipient

• International registered SAVER International registered SAVER instructor by ICETinstructor by ICET

• Extrication Tactics columnist Extrication Tactics columnist Fire Engineering MagazineFire Engineering Magazine

• Team Captain-World Champion Team Captain-World Champion Vehicle Rescue Team 1998Vehicle Rescue Team 1998

• Educator- RoadwayRescueEducator- RoadwayRescue

Overview of today’s programOverview of today’s program

• While much has been made of the various vehicle safety systems and While much has been made of the various vehicle safety systems and even of the motive power concerns of today’s vehicle the biggest even of the motive power concerns of today’s vehicle the biggest challenge facing rescuer is how we deal with the damaged vehicle and challenge facing rescuer is how we deal with the damaged vehicle and the space creation needed to be performed to disentangle and remove the space creation needed to be performed to disentangle and remove the patients on scene of a MVC. Many instructors speak of the quantity the patients on scene of a MVC. Many instructors speak of the quantity of ultra high strength steels in vehicles but it is more than that. Other of ultra high strength steels in vehicles but it is more than that. Other alloys throw in composite materials and consider the shapes these alloys throw in composite materials and consider the shapes these materials are formed into. Then think about the power hydraulic cutter materials are formed into. Then think about the power hydraulic cutter in hand or the recip saw – it is up to the task? Or do we understand the in hand or the recip saw – it is up to the task? Or do we understand the technique needed to fuse tool use with the materials and various technique needed to fuse tool use with the materials and various vehicle components.vehicle components.

• In this web cast we will explore these vehicle materials, how they are In this web cast we will explore these vehicle materials, how they are manufactured and their integration with vehicle construction today. manufactured and their integration with vehicle construction today. Also we will discuss some techniques we need to keep handy with Also we will discuss some techniques we need to keep handy with today’s vehicles. Lastly we will discuss our tool options today in light today’s vehicles. Lastly we will discuss our tool options today in light of these developments in vehicle construction & materials.of these developments in vehicle construction & materials.

Today’s ProgramToday’s Program

• Technology concernsTechnology concerns• Materials – AlloysMaterials – Alloys• Materials – Materials –

Composites/PolymersComposites/Polymers• Components & ShapesComponents & Shapes• TechniquesTechniques• SummarySummary

Technology concernsTechnology concerns• ““Hardened” materialsHardened” materials• Re-enforcementsRe-enforcements• ““Layering” of materialsLayering” of materials• Components have a new life …Components have a new life …• Energy absorption, crush and POOF – Energy absorption, crush and POOF –

it’s stronger???it’s stronger???

nsns

Metals & AlloysMetals & Alloys

• Ultra high strength steelsUltra high strength steels• AluminumAluminum• Various alloys & combinationsVarious alloys & combinations• Lots of names but what does it mean- Lots of names but what does it mean-

bottom line to me?bottom line to me?– HSLAHSLA– BoronBoron– Martensitic alloyMartensitic alloy– FerriteFerrite

Frame construction / B-PostFrame construction / B-Post

Volvo XC 90 Volvo XC 90 –– B-pillar 1300 N/mm B-pillar 1300 N/mm²²

280-300 N/mm2 300 N/mm2300-320 N/mm21300 N/mm2

B-Post reinforcementB-Post reinforcement

B-Post reinforcementB-Post reinforcement

ShapesShapes• ShapesShapes• LayersLayers• Combination of bothCombination of both• What happens to these shapes What happens to these shapes

as we cut?as we cut?

Not just roof posts!Not just roof posts!

Polymers & CompositesPolymers & Composites

• Carbon fiber compositesCarbon fiber composites• PlasticsPlastics• GlazingGlazing• Not as high tech or elusive as Not as high tech or elusive as

you might think.you might think.

TechniquesTechniques

• Types of cutsTypes of cuts• Visualize what we are cuttingVisualize what we are cutting• Blade shaping Blade shaping • AlternativesAlternatives• Better protective barriersBetter protective barriers• Can we really cut that?Can we really cut that?

Type Of Cuts

Surrounding cuts

Penetrating cuts

Blades must go completely Blades must go completely around what you cutting!!!around what you cutting!!!

Blade shapingBlade shaping• All blades are NOT the same?All blades are NOT the same?

Alternatives to severingAlternatives to severing

In SummaryIn Summary• There are many hazards with vehicles today however There are many hazards with vehicles today however

the issue with materials and construction is slow to the issue with materials and construction is slow to be realized be realized

• We will have increasing difficulty across the board We will have increasing difficulty across the board with ALL vehicles not just high end with ALL vehicles not just high end

• We need to think outside the box at our existing tool We need to think outside the box at our existing tool evolutions and how they will work todayevolutions and how they will work today

• Don’t get tunnel vision-if a cut doesn’t work from Don’t get tunnel vision-if a cut doesn’t work from one direction, change the direction and location of one direction, change the direction and location of the cutthe cut

• Share what you see and observe on the street with Share what you see and observe on the street with your brothers and sistersyour brothers and sisters

• We need to use proper hard protection with any tool We need to use proper hard protection with any tool evolution todayevolution today

Questions ???