Evolution of a dynamic seat test standard proposal for a better protection after rear-end impact

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Langwieder, K.¹; Hell, W.¹; Schick, S.¹; Muser, M.²; Walz, F.²; Zellmer, H.³

Evolution of a dynamic seat test standard proposal for a better protection after rear-end impact

Proceedings of the 2000 International IRCOBI Conference on the Biomechanics of Impact

Affiliations

¹GDV Institute for Vehicle Safety, Munich

²ETH Zurich

³Autoliv GmbH, Elmshorn, Germany
Abstract and keywords

Current car seats are designed with respect to ergonomics, production and cost efficiency, but in many cases not for protection in a low speed rear-end impact. The Institute of Vehicle Safety therefore funded different seat test series, where a dynamic seat test standard proposal has been worked out. This standard has been already discussed at IS0 and should be implemented in future regulations to improve the protection of the occupant. Currently the ISO/TC22/SClO/WGl is in the process of developing criteria for a dynamic test standard.

At the moment, one test procedure should test the performance of the seat at delta v 15 km/h and a mean acceleration of 6g, with an additional test at delta v 10 km/h. Two test series with a total number of 24 tests mainly conducted at 15 km/h were carried out in which it clearly turned out that many seats show significant safety deficiencies.

Keywords: Whiplash; Sled Tests; Seats; Head-restraints; Neck

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2010	Schmitt K-U, Niederer PF, Muser MH, Walz F. Trauma Biomechanics: Accidental Injury in Traffic and Sports. 2nd ed. Deidelberg, Germany: Springer; 2010.
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2001	Linder A, Avery M, Krafft M, Kullgren A, Svensson MY. Acceleration pulses and crash severity in low velocity rear impacts: real world data and barrier tests. In: Proceedings of the 17th International Technical Conference on the Enhanced Safety of Vehicles (ESV). June 4-7, 2001; Amsterdam, The Netherlands.
2001	Zellmer H, Stamm M, Seidenschwang A, Brunner A. Enhancement of seat performance in low-speed rear impact. In: Proceedings of the 17th International Technical Conference on the Enhanced Safety of Vehicles (ESV). June 4-7, 2001; Amsterdam, The Netherlands.
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2021	Kang Y-S, Millis W, Thomas C, Stricklin J, Willis A, Pradhan V, Tesny A, Kwon HJ, Ramachandra R, Moorhouse K. Head-to-T1 relative rotation of the BioRID-II, Hybrid III, and post mortem human subjects with increased backsets in moderate-speed rear impacts. In: Proceedings of the 2021 International IRCOBI Conference on the Biomechanics of Injury. September 8-10, 2021; Online.732-752.
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2002	Hell W, Schick S, Langwieder K, Zellmer H. Biomechanics of cervical spine injuries in rear end car impacts: influence of car seats and possible evaluation criteria. Traffic Inj Prev. 2002;3(2):127-140.
2002	Krafft M, Kullgren A, Ydenius A, Tingvall C. Influence of crash pulse characteristics on whiplash associated disorders in rear impacts: crash recording in real life crashes. Traffic Inj Prev. 2002;3(2):141-149.
2002	Langwieder K, Hell W. Proposal of an international harmonized dynamic test standard for seats/head restraints. Traffic Inj Prev. 2002;3(2):150-158.
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