Influence of crash pulse duration on injury risk in frontal impacts based on real life crashes

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Ydenius, Anders¹

Influence of crash pulse duration on injury risk in frontal impacts based on real life crashes

Proceedings of the 2002 International IRCOBI Conference on the Biomechanics of Impact

Affiliations

¹Folksam Research, Stockholm, Sweden
Abstract and keywords

To study the influence of crash pulse duration on injury risk, data of 272 real life frontal collisions with recorded crash pulses was used. 371 restrained occupants were included. It was found that compared with acceleration, the duration has a limited influence on injury risk. The study shows that the average pulse duration in cases with AIS2+ injuries was 7 % longer than in cases with AIS1 injuries. The corresponding difference for mean acceleration was 89%. It was found that the injury reduction effect of airbags was not negatively affected in crashes with a long duration. The results show that in the design of a crashworthy road transport system the design criteria should be based on acceleration, not on change in velocity, because long pulse duration was not found to have a big influence on injury risk.

Keywords: acceleration; crash recorder; injury risk; injury severity; impact severity

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Cited By (6)

Year	Entry
2005	Mackay M. The contribution of accident investigation research to biomechanics. In: Gilchrist MD, ed. IUTAM Symposium on Impact Biomechanics: From Fundamental Insights to Applications. Dordrecht, The Netherlands: Springer; 2005:3-16. Solid Mechanics and Its Applications; vol 124.
2005	Simms C, Wood D, Glynn C, Kullgren A, Ydenius A. Modelling of frontal collisions from onboard recorder and full width barrier data. In: Gilchrist MD, ed. IUTAM Symposium on Impact Biomechanics: From Fundamental Insights to Applications. Dordrecht, The Netherlands: Springer; 2005:155-162. Solid Mechanics and Its Applications; vol 124.
2003	Linder A, Avery M, Krafft M, Kullgren A. Change of velocity and pulse characteristics in rear impacts: real world and vehicle tests data. In: Proceedings of the 18th International Technical Conference on the Enhanced Safety of Vehicles (ESV). May 19-22, 2003; Nagoya, Japan.
2005	Wood DP, Simms C, Glynn C. Two car frontal collisions: the role of car mass, collision speed distribution and frontal stiffness in occupant fatality and injury. In: Proceedings of the 2005 International IRCOBI Conference on the Biomechanics of Impact. September 21-23, 2005; Prague, Czech Republic.85-96.
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2021	Chen W, Wang Q, Wang Y, Zheng H, Huang Y, Zhou Q, Nie B. A generation model of vehicle crash pulse for injury severity prediction based on a typical sedan. In: Proceedings of the 2021 International IRCOBI Asia Conference on the Biomechanics of Injury. June 2-2, 2021; Online.33-36.