Impact Response of an Energy Absorbing Earcup,
ARMY AEROMEDICAL RESEARCH LAB FORT RUCKER AL
Pagination or Media Count:
Twelve impacts tests on instrumented human cadavers were performed at Wayne State University to compare the load attenuating capability of an energy absorbing earcup with that of the standard rigid earcup used in SPH-4 flight helmets. SPH-4 helmeted cadavers were dropped from heights varying from 1.17 to 2.03 m. so as to receive a direct impact to the right side of the helmet. The helmet was equipped with either standard or energy absorbing earcups. Loads were measured at the impact surface and accelerations were measured through a triaxial accelerometer mounted to the cadavers maxilla. Analysis of the data shows a significant decrease in both peak load and acceleration in the y axis for the energy absorbing earcup equipped helmets over those measured for the standard earcup equipped helmets.
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