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Evaluation and prediction of the effect of load frequency on the wear properties of pre-cracked nylon 66

Friction 2014年第3期2卷 240-254页

作者： A.ABDelBARY m.N.ABOUelWAFA i.m.el fahham mechanical Engineering Department Faculty of EngineeringAlexandria UniversityAlexandriaEgypt

Nylon 66 has been widely used for numerous mechanical applications but its sliding wear mechanisms are not fully *** particular,limited attention has been paid to the generation of fatigue surface cracks under constant and cyclic load *** present work focuses on the effect of load frequency on the wear behavior of a polymer with surface defects in dry sliding *** defects were imposed vertical deep cracks perpendicular to the direction of *** studies were conducted against a steel counterface at constant loads,and in cyclic loads at different *** neural network(ANN)models were examined to identify one that optimally simulates wear under the applied load *** cracks were found to have a remarkable adverse effect on the wear behavior of the *** wear rates were influenced by the number of cracks as well as the type of applied ***,results suggest that the presence of surface cracks is attributable to the section B wear ***,acceptable predicted wear rate values were obtained by introducing the ANN wear model.

关键词： nylon wear surface defects wear model

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