FINITE VOLUME METHOD ANALYSIS OF EROSIVE WEAR IN PEI COMPOSITE

Tribology especially related with the parameters like friction, wear and lubrication of interacting surfaces that are in relative motion with each other. Wear is damage to solid surface, generally involving progressive loss of material due to relative motion between the surface and a contacting substance or substances. The five main modes of wear are abrasive, adhesive, fretting, erosion and fatigue wear, which are commonly observed in practical situations. The abrasive and erosive wear are most important modes of wear, the wear coefficient (k) in these two modes is at least one to two orders of magnitude greater than the wear coefficients in other wear modes. Also, the abrasive and erosive wears are the most important among all the forms of wear because they contribute almost 74 % of total cost of wear. In present work discrete phase model in CFD has used to predict the erosion rate in PEI composites material. The effect of impact velocity and the impingement angles is studied by comparing the experimented results. The predicted (simulated) and experimentally measured wear profiles are compared. It was observed that in the case of material ULTEM 1000, 2200 and 4000 the impingement angle 90◦ and impact velocity 88m/s, the predicted and experimented profiles were very accurate.