Assessing the relevance of NIC and its correlation with crash-pulse parameters: using the mathematical BioRID I in rear-end impacts

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Eriksson, Linda^1,2; Boström, Ola²

Assessing the relevance of NIC and its correlation with crash-pulse parameters: using the mathematical BioRID I in rear-end impacts

Traffic Inj Prev. 2002;3(2):175-182

©2002 Taylor & Francis

Affiliations

¹Department of Machine and Vehicle Systems, Chalmers University of Technology, Göteborg, Sweden

²Autoliv Research Sweden, Vårgårda, Sweden
Abstract and keywords

Validated criteria are vital tools in crash-safety research and development. In this study, NIC_max outcomes from mathematical simulations were compared with real-life data in terms of the risk of sustaining long-term soft-tissue neck injuries in rear-end impacts. Mathematical models of the BioRID I and car seats were exposed to a broad set of low-speed crash pulses. It was found that the two seats representing cars with high neck-disability risk in real-life impacts resulted in higher NIC_max values compared to the two low-risk seats. The mathematical simulations were also used to evaluate the influence of crash-pulse parameters on NIC_max. It was found that the commonly used change of velocity, Δv, was not a good predictor for NIC_max, nor was the crash-pulse peak acceleration. The change of velocity during the first 85 ms of the impact, Δv_{85 ms}, correlated with the NIC_max and has therefore the potential to quantify impact severity. Furthermore, impacts with crash-pulse-recorder equipped cars, reported by Krafft et al. (2000), were reconstructed.

Keywords: Rear-end Impact; NIC, WAD; Crash Pulse; Mathematical Models; Impact Reconstruction
Links

DOI: 10.1080/15389580211997
History

Received: 2000-10-11

Accepted: 2001-11-17

Online: 2010-09-15

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Cited By (4)

Year	Entry
2005	Manoogian SJ, Kennedy EA, Duma SM. An Updated Literature Review of Musculoskeletal Injuries to the Human Neck and the Effects of Head-Supported Mass Worn by Soldiers. Fort Rucker, AL: U.S. Army Aeromedical Research Laboratory; October 2005. USAARL Contract Report CR-2006-01.
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2003	Zuby DS, Farmer CM, Avery M. The influence of crash pulse shape on BioRID response. In: Proceedings of the 2003 International IRCOBI Conference on the Biomechanics of Impact. September 25, 2003; Lisbon, Portugal.327-341.