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Measurment of Submarining on Hybrid Iii 50Md & 5Md Percentile Crash Test Dummies
Published May 23, 1994 by National Highway Traffic Safety Administration in United States
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 2D 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 affect 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
- Jérôme Uriot - Institut de Recherches Biomécaniques et Accidentologiques
- Martin Page - Institut de Recherches Biomécaniques et Accidentologiques
- Philippe Fournier - P.S.A. Peugeot Citroën
- Mick Saloum - First Technology Safety Systems
- Frédéric Loiseleux - Institut de Recherches Anatomo-Chirurgicales et de Bioméca
- Claude Tarrière - Renault S.A.
- Farid Bendjellal - Renault S.A.