1973-02-01

An Energy Absorbing Elastomeric Bumper 730027

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.

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