Farmsafe australia symposium 31 october 2013
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FarmSafe Australia Symposium 31 October 2013. Evaluation of Alternative Quad Bike Safety Systems. Shane Richardson , Andreas Sandvik, Chris Jones, Tia Orton-Gaffney, Nikola Josevski, Wei Pei (Tandy) Pok and Thomas Emmett. Background. Background. Background.

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Farmsafe australia symposium 31 october 2013
FarmSafeAustralia Symposium 31 October 2013

Evaluation of Alternative Quad Bike Safety Systems

Shane Richardson, Andreas Sandvik, Chris Jones, Tia Orton-Gaffney, Nikola Josevski, Wei Pei (Tandy) Pok and Thomas Emmett




Background2
Background

Albert Einstein: “Insanity: doing the same thing over and over again and expecting different results.”


Background3
Background

  • Heads of Workplace Health and Safety

“…reasonably practicable for a device to be developed that when fitted to Quad Bike reduces the potential for death and/or serious injury caused by entrapment beneath an overturned vehicle?”

Anon. ‘Report of the Technical Engineering Group (TEG) to the Heads of Workplace Health and Safety Authorities (HWSA)’, Trans Tasman Working Party on “Quad Bike Safety” Meeting, October 5-6, 2010, Australia.


Background4
Background

  • Heads of Workplace Health and Safety

    • To prevent entrapment

      • Crush injury

      • Traumatic or mechanical asphyxia

Anon. ‘Report of the Technical Engineering Group (TEG) to the Heads of Workplace Health and Safety Authorities (HWSA)’, Trans Tasman Working Party on “Quad Bike Safety” Meeting, October 5-6, 2010, Australia.


Background5
Background

  • Richardson

    • Used PC-Crash to simulate Quad bike rollover

    • 18 riderless tests to validate the models

    • 400 simulations (4 x100)

    • http://www.youtube.com/playlist?list=PLjYkHo7lOqxUsjYA2A1dqKE2F3oMGZAvI&feature=mh_lolz

Richardson S. Orton T, Sandvik A. Jones C. Josevski N. and Pok W P., ‘Simulation of Quad Bike (ATV) Rollover Using PC-Crash to Evaluate Alternative Safety Systems’, 13-0286, 23rd Enhnaced Safety of Vehicles, Seoul, South Korea,


Validation data
Validation Data

  • Snook

    • Presented 42 Quad Bike rollover tests

      • Used 18 tests

  • MUARC

    • Overturn angle 39⁰

Snook C., ‘An assessment of passive roll over protection for Quad Bikes’, University of Southern Queensland, Australia

Monash University Accident Research Centre (MUARC)

Rechnitzer G., Day L., Grzebieta R., Zou R. and Richardson S. ‘All Terrain Vehicle Injuries and Deaths’ Monash University Accident Re-search Centre, 19 March 2003




Simulation scenarios
Simulation Scenarios

  • 2000 (5 x 400)

  • Ramped (side tilt) angles

    • 20⁰ to 29⁰ (in 1⁰ intervals)

  • Lateral speeds 6km/h to 15km/h

    • 1 km/h intervals

  • Longitudinal speeds 0km/h to 30km/h

    • 10km/h intervals


Simulation scenarios1
Simulation Scenarios

  • Torso impact force

    • 1,500N approximates 6.9g

    • 3,000N approximates 13.9g

  • Traumatically or mechanical asphyxiated

    • Torso resting force > 1,000N for greater than 7 minutes

    • Used simulated average resting torso force


2000 simulations
2000 Simulations

  • Quad Bike

  • First 1.5s

  • 48 of 400 +1,500N

  • 11 of 400 +3,000N


2000 simulations1
2000 Simulations

  • Quad Bike

  • Resting torso

  • 46 of 400 +1,000N


2000 simulations2
2000 Simulations

  • Rider Torso impact force >1,500N

    • 48 times Quad Bike

    • 2 times Quadbar CPD

    • 0 times LifeGuard CPD

    • 0 times ROPS unrestrained

    • 0 times ROPS restrained


2000 simulations3
2000 Simulations

  • Rider Torso impact force >3,000N

    • 11 times Quad Bike

    • 0 times Quadbar CPD

    • 0 times LifeGuard CPD

    • 0 times ROPS unrestrained

    • 0 times ROPS restrained


2000 simulations4
2000 Simulations

  • Rider Torso resting force >1,000N

    • 46 times Quad Bike

    • 28 times Quadbar CPD

    • 1 time LifeGuard CPD

    • 0 times ROPS unrestrained

    • 0 times ROPS restrained


Real world crashes
Real World Crashes

  • Example

    • 105kg adult male riding across a side slope on a quad bike with a spray tank

    • Rolled laterally and ejected the rider

    • The rider was found beneath the quad bike.

    • Cause of death was traumatic asphyxiation



Example quadbar
Example Quadbar


Conclusions
Conclusions

Where there is an identifiable risk of serious or fatal injury from quad rollover, consideration should be given to fitting either: CPD or ROPS to mitigate the potential for serious and/or fatal injury due to torso impact or entrapment during a quad bike rollover.



Farmsafe australia symposium 31 october 2013

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