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Experimental Consideration on Headform Impact Test for Pedestrian Protection
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English
Abstract
Improvements for pedestrian head protection in a car-pedestrian accident have been discussed in several countries. Test methods for evaluating head protection have been proposed, and most are sub-systems using rigid headforms with or without headskin. In those tests, HIC is used as a criterion for head protection.
This paper discusses the test conditions and requirements of the headform impact test. The influence of different test conditions and their importance on head impact test requirements, were verified. The primary items cited are as follows:
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(1) The results of the rigid headform were similar to that of the human cadaver skull in cases without skull fractures. Consequently, the rigid headform can be used for the impactor simulating a condition without skull fracture.
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(2)
In the cases of HIC≤1000, the force-deformation curves of the hoodtops showed similar characteristics with maximum dynamic deformations over 60mm.
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(3)
Impactor mass affected the maximum acceleration and HIC. Impactor mass appears to be an important factor in test conditions.
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(4)
The test results with and without headskin (Hybrid-III) showed almost no difference in the maximum acceleration and the HIC. The presence of a headskin on the impactor is not an important factor in test conditions.
Authors
Citation
Sakurai, M., Kobayashi, K., Ishikawa, H., Ono, K. et al., "Experimental Consideration on Headform Impact Test for Pedestrian Protection," SAE Technical Paper 930095, 1993, https://doi.org/10.4271/930095.Also In
Human Surrogates: Design, Development and Side Impact Protection
Number: SP-0945; Published: 1993-03-01
Number: SP-0945; Published: 1993-03-01
References
- ISO/TC22/SC10/WG2 N281 Primary Working Draft Passenger cars and light commercial vehicles - Pedestrian protector - Impact test method for pedestrian adult lower leg and knee 1992
- Harris J. Proposals for test methods to evaluate Pedestrian protection for cars The 13th International Technical Conference on Experimental Safety Vehicles 1991
- Glaeser K. Development of a Head Impact Test Procedure for Pedestrian Protection, The 13th ESV 1991
- Cesari D. Alonzo F. Subsystem for Pedestrian Lower Leg and Knee Protection, The 13th ESV 1991
- Hoyt T. A. et al. Experimental Pedestrian Accident Reconstructions - Head Impacts DOT HS 807 288 1988
- Monk M. W. Injury Severity and Measured Response for Pedestrian Head Impacts DOT HS 807 476 1989
- Kessler J. W. Hoyt T. A. Monk M. W. Pedestrian Head Injury Reduction Concepts DOT HS 807 432 1988
- Ohashi H. Ono K. Sasaki A. Ohashi N. Misawa S. The Present Situation of Pedestrian Accident in Japan IRCOBO 1990
- Ishikawa H. Yamazaki K. Ono K. Sasaki A. Current Situation of Pedestrian Accidents and Research into Pedestrian Protection in Japan, The 13th ESV 1991
- Ishikawa H. Kajzer J. Ono K. Sakurai M. Simulation of Car Impact to Pedestrian Lower Extremity IRCOBI 1992
- NHTSA Test Procedure for Pedestrian Head Impacts against Central Hoods Figure 27 1990