Thoracic Injury Risk Curves for Rib Deflections of the SID-IIs Build Level D

Authors: Annette L. Irwin, Greg Crawford, David Gorman, and Sikui Wang—General Motors LLC; Harold J. Mertz—General Motors Corporation (retired)

Abstract

Injury risk curves for SID-IIs thorax and abdomen rib deflections proposed for future NCAP side impact evaluations were developed from tests conducted with the SID-IIs FRG. Since the floating rib guide is known to reduce the magnitude of the peak rib deflections, injury risk curves developed from SID-IIs FRG data are not appropriate for use with SID-IIs build level D. PMHS injury data from three series of sled tests and one series of whole-body drop tests are paired with thoracic rib deflections from equivalent tests with SID-IIs build level D. Where possible, the rib deflections of SID-IIs build level D were scaled to adjust for differences in impact velocity between the PMHS and SID-IIs tests. Injury risk curves developed by the Mertz-Weber modified median rank method are presented and compared to risk curves developed by other parametric and non-parametric methods.

Type: Full Paper

Keywords: SID-IIs build level D, rib deflection, thoracic injury risk

© Stapp Association, 2016

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