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Wear testing is often unreliable because wear is a complex process. There are several wear modes for each material, and often a small change in operating condition produces a drastic change in wear rate. Uncertainty in developing wear tests may be reduced by examination of wear debris from both the wear tester and the full scale machine being simulated. If the debris from both are similar, the wear test is worthy of further use.
wear tests, wastes, simulation, wear
Professor, The University of Michigan, Ann Arbor, Michigan