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Cadaver and Dummy Knee Impact Response
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English
Abstract
Knee impacts along the femoral axis of unembalmed male cadavers and Part 572 dummies were made with rigid pendulum impactors at Wayne State University. The dummy exhibited significantly higher knee impact forces than the cadaver subjects. This difference of response is shown to be due to differences of effective leg mass and knee padding. The dummy with its heavy rigid metal skeleton is not like its human counterpart, where the majority of the leg weight is composed of loosely coupled flesh.
The knee impacts of the dummy subjects showed that the dummy femur transducer force was consistently less than the corresponding dummy knee impact force by a constant ratio of 0.8.
We recommend that the “skeletal” weight of the Part 572 dummy leg should be substantially reduced, with the weight difference being added to a properly simulated leg flesh. Also, the simulated flesh covering of the knee should be modified to reduce the peak force resulting from rigid body impacts.
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Authors
Citation
Horsch, J. and Patrick, L., "Cadaver and Dummy Knee Impact Response," SAE Technical Paper 760799, 1976, https://doi.org/10.4271/760799.Also In
References
- Powell W. R. Advani S. H. Clark R. N. Ojala S. J. Holt D. J. “Investigation of Femur Response to Longitudinal Impact.” Paper 741190 , Proceedings of the 18th Stapp Car Crash Conference Society of Automotive Engineers, Inc. December 1974
- Melvin J. W. Stalnaker R. L. Alem N. M. Benson J. B. Mohan D. “Impact Response and Tolerance of the Lower Extremities.” Paper 751159 , Proceedings of the 19th Stapp Car Crash Conference Society of Automotive Engineers, Inc. November 1975
- King J. J. Fan W. R. S. Vargovick R. J. “Femur Load Injury Criteria--A Realistic Approach.” Paper 730984 , Proceedings of the 17th Stapp Car Crash Conference Society of Automotive Engineers, Inc. November 1973
- Code of Federal Regulations, Part 572--Anthropomorphic Test Dummy Federal Register 38 147 August 1 1973
- Powell W. R. Ojala S. J. Advani S. H. Martin R. B. “Cadaver Femur Responses to Longitudinal Impacts.” Paper 751160 , Proceedings of the 19th Stapp Car Crash Conference Society of Automotive Engineers, Inc. November 1975
- Patrick L. M. Kroell C. K. Mertz H. J. “Forces on the Human Body in Simulated Crashes.” Proceedings of the 9th Stapp Car Crash Conference Society of Automotive Engineers, Inc. October 1965
- Patrick L. M. Mertz H. J. Kroell C. K. “Cadaver Knee, Chest, and Head Impact Loads.” Paper 670913 , Proceedings of the 11th Stapp Car Crash Conference Society of Automotive Engineers, Inc. October 1967