Comparison of the THORAX demonstrator and HIII sensitivity to crash severity and occupant restraint variation

Sunnevång, Cecilia; Hynd, David; Carroll, Jolyon; Dahlgren, Mikael

Affiliations

¹Autoliv Research

²Department of Surgical and Perioperative Science, Umeå University, Sweden

³TRL (Transport Research Laboratory), UK

⁴Autoliv Sverige AB, Sweden

Abstract and keywords

The thorax is the most frequently injured body region in frontal impacts. This study aimed to compare the THORAX Demonstrator THOR and HIII injury risk predictions in relation to expected injury risk reductions based on trends observed in real life data.

Sled tests were performed in a body‐in‐white representing a mid‐sized family car. To relate the test results to real life, the AIS3+ thoracic injury risks measured by the THOR and HIII were compared for different test configurations. For the driver position a 6 kN belt was compared to a 4 kN belt plus airbag and a 3 kN belt plus airbag (same pulse). On the passenger side the same restraint in EuroNCAP ODB (64 km/h) and FMVSS 208 ODB (40 km/h) tests were evaluated. Injury criteria compared were Cd and DEQ(Lin) for the HIII and Dmax, Dc‐THOR and strain for the THOR.

The level of thoracic injury risk needs further investigation, but the expected injury risk reduction from a predicted high to a low risk was demonstrated by THOR, contrary to the HIII. The large variations in injury risk as well as the sensitivity to crash severity indicate that the THOR dummy should be the preferred tool for evaluation of frontal impact occupant protection.

Keywords: Frontal Impact, Injury risk, Sled tests, THOR, Hybrid III

Links

URL: http://www.ircobi.org/downloads/irc14/pdf_files/42.pdf

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2015	Tijssens M, Bosma F, Kietlinski K. A methodology and tool chain to develop integrated safety systems. In: Proceedings of the 24th International Technical Conference on the Enhanced Safety of Vehicles (ESV). June 8-11, 2015; Gothenburg, Sweden.
2019	Park H, Cho A, Kim T, Cho M, Lee T, Lee S, Jin W, Lee M. Study on identification of characteristics of thorax of thor-m50 (metric). In: Proceedings of the 26th International Technical Conference on the Enhanced Safety of Vehicles (ESV). June 10-13, 2019; Eindhoven, Netherlands.
2014	Davidsson J, Carroll J, Hynd D, Lecuyer E, Song E, Trosseille X, Eggers A, Sunnevang C, Praxl N, Martinez L, Lemmen P, Been B. Development of injury risk functions for use with the THORAX demonstrator: an updated THOR. In: Proceedings of the 2014 International IRCOBI Conference on the Biomechanics of Injury. September 10-12, 2014; Berlin, Germany.359-376.
2016	Antona‐Makoshi J, Yamamoto Y, Kato R, Kunitomi S, Konosu A, Dokko Y, Yasuki T, Takamiya T. Effect of seatbelt and airbag loads on thoracic injury risk in frontal crashes considering average and small body sizes and age‐dependent thoracic fragility. In: Proceedings of the 2016 International IRCOBI Conference on the Biomechanics of Injury. September 14-16, 2016; Malaga, Spain.904-930.
2017	Östling M, Saito H, Vishwanatha A, Ding C, Pipkorn B, Sunnevång C. Potential benefit of a 3+2 criss cross seat belt system in frontal and oblique crashes. In: Proceedings of the 2017 International IRCOBI Conference on the Biomechanics of Injury. September 13-15, 2017; Antwerp, Belgium.390-409.
2018	Mroz K, Pipkorn B, Sunnevång C, Eggers A, Bråse D. Evaluation of adaptive belt restraint systems for the protection of elderly occupants in frontal impacts. In: Proceedings of the 2018 International IRCOBI Conference on the Biomechanics of Injury. September 12-14, 2018; Athens, Greece.60-75.