Head/neck/torso behavior and cervical vertebral motion of human volunteers during low speed rear impact: mini-sled tests with mass production car seat

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Pramudita, Jonas A.¹; Ono, Koshiro²; Ejima, Susumu²; Kaneoka, Koji³; Shiina, Itsuo³; Ujihashi, Sadayuki¹

Head/neck/torso behavior and cervical vertebral motion of human volunteers during low speed rear impact: mini-sled tests with mass production car seat

Proceedings of the 2007 International IRCOBI Conference on the Biomechanics of Impact

Affiliations

¹Tokyo Institute of Technology, Japan

²Japan Automobile Research Institute

³University of Tsukuba, Japan
Abstract and keywords

The purpose of this study is to clarify the neck injury mechanism during low speed rear impact. Low speed rear impact tests on human volunteers were conducted using a mini-sled apparatus with a mass production car seat. Head/neck/torso behavior and cervical vertebral motion were analyzed and strains on the cervical facet joint were determined. The effect of differences on gender, seat back angle, sled acceleration and muscle condition to the head/neck/torso behavior and the cervical vertebral motion were also discussed. Moreover, the risk of neck injury in a mass production car seat environment was evaluated by comparing the strain values to the results from a previously reported test that used a rigid seat environment.

Keywords: Neck; Sled Tests; Volunteers; Mass Production Car Seat; Cervical Vertebral Motion

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Cited By (7)

Year	Entry
2008	Yamazaki K, Ono K, Ishii M. Biofidelity of rear impact dummies in low speed rear-end impact: comparison of rigid seat and mass production car seat in human volunteers. In: Proceedings of the 2008 International IRCOBI Conference on the Biomechanics of Impact. September 17-19, 2008; Bern, Switzerland.323-337.
2009	Ono K, Ejima S, Yamazaki K, Sato F, Pramudita JA, Kaneoka K, Ujihashi S. Evaluation criteria for the reduction of minor neck injuries during rear-end impacts based on human volunteer experiments and accident reconstruction using human fe model simulations. In: Proceedings of the 2009 International IRCOBI Conference on the Biomechanics of Impact. September 9-11, 2009; York, UK.381-398.
2009	Stemper BD, Storvik SG, Yoganandan N, Pintar FA. Verification of lower neck shear force as a rear impact injury criterion. In: Proceedings of the 2009 International IRCOBI Conference on the Biomechanics of Impact. September 9-11, 2009; York, UK.369-380.
2010	Sato F, Antona J, Ejima S, Ono K. Influence on cervical vertebral motion of the interaction between occiput and head restraint/seat based on the reconstruction of rear-end collision using finite element human model. In: Proceedings of the 2010 International IRCOBI Conference on the Biomechanics of Impact. September 15-17, 2010; Hannover, Germany.41-58.
2014	Sato F, Nakajima T, Ono K, Svensson M, Brolin K, Kaneoka K. Dynamic cervical vertebral motion of female and male volunteers and analysis of its interaction with head/neck/torso behavior during low‐speed rear impact. In: Proceedings of the 2014 International IRCOBI Conference on the Biomechanics of Injury. September 10-12, 2014; Berlin, Germany.227-249.
2015	Sato F, Nakajima T, Ono K, Svensson M, Kaneoka K. Characteristics of dynamic cervical vertebral kinematics for female and male volunteers in low‐speed rear impact, based on quasi‐static neck kinematics. In: Proceedings of the 2015 International IRCOBI Conference on the Biomechanics of Injury. September 9-11, 2015; Lyon, France.261-277.
2020	Correia MA. Optimization of Neck Musculature Activation for Head Kinematics in Frontal, Lateral and Rear Impact Simulations [Master's thesis]. University of Waterloo; 2020.