Measurement of submarining on Hybrid III 50° & 5° percentile dummies

Uriot, Jérôme; Page, Martin; Tarriére, Claude; Bendjellal, Farid; Loiseleux, Frédéric; Saloum, Mick; Fournier, Philippe

Affiliations

¹Institut de Recherches Biomécaniques et Accidentologiques

²Département Biomédical de l'Automobile de RENAULT S.A.

³Département d‘étude et d'essais de sécurité de RENAULT S.A.

⁴Institut de Recherches Anatomo-Chirurgicales et de Biomécanique Appliquée

⁵First Technology Safety Systems

⁶P.S.A. Peugeot Citroén

Abstract

Instrumentation for the study of submarining on the Hybrid II test dummy has already been described in a previous paper. The instrumentation consisted basically of two 20 force transducers installed in the dummy's pelvis. This system has been evaluated, improved and installed on the 50th percentile Hybrid III dummy. The aim of this paper is to describe the general concept arrived at through this study, namely:

Detection of movement of the lap-belt via a simple system installed in the iliac wing of the pelvis.
Measurement of the amplitude of submarining via a 2D force transducer installed back from the iliac crests.

This work, carried out in conjunction with FTSS, required changes on the levels of the spinal/lumbar column connection and measurement of thoracic deflection. The assembly was tested in various impact configurations (subsystem and sled configuration tests). The corresponding results show that the system detects submarining well and does not the overall response of the instrumented dummy by comparison with a standard dummy.

The new system detecting seat-belt slippage was also installed on the 5th percentile Hybrid III dummy. Sled tests gave reliable recordings of the detection of submarining.

From the results available, it seems that the two versions presented (50th and 5th percentile) enable improved study of submarining and accordingly the optimization of occupant restraining systems.

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Cited By (6)

Year	Entry
2002	Rouhana SW. Biomechanics of abdominal trauma. In: Nahum AM, Melvin JW, eds. Accidental Injury: Biomechanics and Prevention. 2nd ed. New York, NY: Springer-Verlag; 2002:405-453.
1994	Tarrière C. Car safety and ratings: comparative study of facts and practices-proposals. In: Proceedings of the 1994 International IRCOBI Conference on the Biomechanics of Impact. September 21-23, 1994; Lyon, France.165-179.
1994	Thomas C, Foret-Bruno JY, Brutel G, Le Coz JY, Got C, Patel A. Front passenger protection: what specific requirements in frontal impact? In: Proceedings of the 1994 International IRCOBI Conference on the Biomechanics of Impact. September 21-23, 1994; Lyon, France.205-216.
2001	Rouhana SW, Elhagediab AM, Walbridge A, Hardy WN, Schneider LW. Development of a reusable, rate-sensitive abdomen for the Hybrid III family of dummies. Stapp Car Crash J. 2001;45:33-60. SAE 2001-22-0002.
2006	Uriot J, Baudrit P, Potier P, Trosseille X, Petit P, Guillemot H, Guérin L, Vallancien G. Investigations on the belt-to-pelvis interaction in case of submarining. Stapp Car Crash J. 2006;50:53-73. SAE 2006-22-0003.
2010	Klinich KD, Flannagan CAC, Nicholson K, Schneider LW, Rupp JD. Factors associated with abdominal injury in frontal, farside, and nearside crashes. Stapp Car Crash J. 2010;54:73-91. SAE 2010-22-0005.