Abstract
A reciprocating impact wear testing apparatus has been developed for studies of wear occurring between solid materials undergoing repetitive impulsive loading. Such loading may be purely normal or may include simultaneous transverse sliding. The apparatus is designed to allow measurement of the impact load pulse and to provide for the maintenance of repeatable force pulses for the duration of a prolonged series of impacts (millions of cycles). When utilized with a flat-nosed impacting specimen, the time-invariant impulse waveform results in repeatable surface and subsurface stress cycling of materials undergoing wear. This paper describes the testing apparatus and procedures and includes results from a preliminary series of tests on two polymeric materials.
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