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An Energy Absorbing Elastomeric Bumper
Microcellular urethane, as facing for a fixed bumper, was established as functional material for reducing impact forces in low speed vehicle collisions.
The sharply increased modulus at low temperature typical of many urethane elastomers, a cause of high forces upon impact, was overcome in compounds developed during this project.
An energy absorbing bumper of high aesthetic appeal is described, representing a first generation of development. This bumper design is capable of meeting the FMVSS 215 pendulum impact standards.
Testing procedures and data reduction systems were developed to provide ready access to a large volume of test data.
Hintzen, H. and Dunleavy, R., "An Energy Absorbing Elastomeric Bumper," SAE Technical Paper 730027, 1973,
Heinz Hintzen, Raymond A. Dunleavy
1973 International Automotive Engineering Congress and Exposition
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