Abstract
ABSTRACTIn tribological applications, such as sliding bearing, polymers tends to wear morequickly than indicated in laboratory wear tests. The reason for this discrepancy hasbeen attributed to the effect of loading conditions. In the current study, the influenceof loading mode on the wear characteristics of polyamide (PA66) against steelcounterpart was investigated in dry and wet sliding conditions. The polymer wastested under different static and cyclic loading conditions in order to provide acomprehensive understanding of its wear behavior. All tests were performed usingreciprocating pin-on-plate tribometer which was constructed to perform wear testsunder constant and cyclic loads at constant sliding speed. There was consistentevidence of the effect of loading mode on the wear behavior. At cyclic load, thepolymer shows significant increase in wear rates than those found under constantload. Furthermore, under wet sliding, the polymer showed generally higher wearrates compared to dry tests.
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