This study compares head impact dynamics between post-mortem human surrogates (PMHS) and the Polar-II pedestrian crash dummy in vehicle–pedestrian impacts with a small sedan and a large sports utility vehicle (SUV). A total of 15 (8 sedan and 7 SUV) full-scale vehicle pedestrian impact tests were performed at 40 km/h. For each vehicle, two (SUV) or three (sedan) PMHS tests and five dummy tests were performed, with three of the dummy tests in the same configuration to show repeatability, and the other two tests utilising slightly different configurations. Head linear and angular kinematics were captured from PMHS and dummy head instrumentation, and dummy upper neck load cell data were used to determine neck forces and calculate head impact forces. Differences in head impact locations, timing and kinematics between the dummy and PMHS were minimised when the dummy was positioned higher above the ground reference level to match the pelvis height of the PMHS. On average, the dummy recorded higher resultant impact forces (2930 N vs. 1862 N) in windshield impacts to the sedan than in hood impacts to the SUV, which resulted in higher 15-ms Head Injury Criteria (HIC15) values and higher peak and averaged angular accelerations. While there are differences in dummy injury risk metrics, both the dummy and PMHS data show that the difference in injury risk metrics predicted by the dummy can be explained by the variation in impact velocity between the sedan (14.1 ± 1.2 m/s) and the SUV (10.7 ± 2.3 m/s), the differences in injury risk predicted by the PMHS are not as clear due to confounding factors. The data and analyses presented in this study also show that neck forces during head impacts contribute a substantial and additive effect to the head impact accelerations (and thus HIC15 values) measured in the dummy, and that for the SUV, neck forces affect head accelerations more than impact forces. Despite analysing only lateral impacts with two vehicle geometries at 40 km/h, this study provides the only comparison of PMHS and dummy pedestrian head impact kinematics data available.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Assessment of pedestrian head impact dynamics in small sedan and large SUV collisions


    Contributors:

    Published in:

    Publication date :

    2012


    Size :

    16 Seiten




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




    Assessment of pedestrian head impact dynamics in small sedan and large SUV collisions

    Kerrigan, Jason / Arregui-Dalmases, Carlos / Crandall, Jeff | Taylor & Francis Verlag | 2012


    Pedestrian head impact dynamics: comparison of dummy and PMHS in small sedan and large SUV impacts

    Kerrigan,J. / Arregui,C. / Crandall,J. et al. | Automotive engineering | 2009


    Head Injury Criterion of Vietnamese Pedestrian Struck by a Sedan

    Ly, Hung Anh / Nguyen, Phu Thuong Luu | Springer Verlag | 2022


    Whole-body Response for Pedestrian Impact with a Generic Sedan Buck

    Forghani, Ali / Overby, Brian / Weiss, David B. et al. | SAE Technical Papers | 2015


    Pedestrian lower extremity response and injury: a small sedan vs a large sport utility vehicle

    Kerrigan,J. / Subit,D. / Untaroiu,C. et al. | Automotive engineering | 2008