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Biomechanical Impact Response of the Human Chin and Manubrium

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Abstract

Chin-to-chest impact commonly occurs in frontal crash simulations with restrained anthropomorphic test devices (ATDs) in non-airbag situations. This study investigated the biofidelity of this contact by evaluating the impact response of both the chin and manubrium of adult post-mortem human subjects (PMHSs). The adult PMHS data were scaled to a 10-year-old (YO) human size and then compared with the Hybrid III 10YO child (HIII-10C) ATD response with the same test configurations. For both the chin and manubrium, the responses of the scaled PMHS had different characteristics than the HIII-10C ATD responses. Elevated energy impact tests to the PMHS mandible provided a mean injury tolerance value for chin impact force. Chin contact forces in the HIII-10C ATD were calculated in previously conducted HYGE sled crash simulation tests, and these contact forces were strongly correlated with the Head Injury Criterion (HIC36 ms). The mean injurious force from the PMHS tests corresponded to a HIC36 ms value that would predict an elevated injury risk if it is assumed that fractures of the chin and skull are similarly correlated with HIC36 ms. Given the rarity of same occupant-induced chin injury in booster-seated occupants in real crash data and the disparity in chin and manubrium stiffnesses between scaled PMHS and HIII-10C ATD, the data from this study can be made use of to improve biofidelity of chin-to-manubrium contact in ATDs.

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Notes

  1. The PMHS were available through the body donor program at The Ohio State University’s Injury Biomechanics Research Laboratory, and applicable NHTSA guidelines as well as IRB protocol were followed.

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Acknowledgments

The authors thank Rod Herriott, Bruce Donnelly, Yun-seok Kang, and Kevin Moorhouse for their technical assistance in this study. The views conveyed in this article reflect those of the authors and not necessarily those of their respective organizations.

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Authors and Affiliations

  1. National Highway Traffic Safety Administration, East Liberty, OH, USA

    Jason A. Stammen

  2. The Ohio State University, Columbus, OH, USA

    John H. Bolte IV

  3. Transportation Research Center, East Liberty, OH, USA

    Joshua Shaw

Authors
  1. Jason A. Stammen
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  2. John H. Bolte IV
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  3. Joshua Shaw
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Correspondence to Jason A. Stammen.

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Associate Editor Stefan M. Duma oversaw the review of this article.

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Stammen, J.A., Bolte, J.H. & Shaw, J. Biomechanical Impact Response of the Human Chin and Manubrium. Ann Biomed Eng 40, 666–678 (2012). https://doi.org/10.1007/s10439-011-0419-x

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  • DOI: https://doi.org/10.1007/s10439-011-0419-x

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