Abstract
The effect of ultrahigh molecular weight polyethylene (UHMWPE) on mechanical and solid particle erosive wear behavior of aramid fabric reinforced-epoxy (A-E) composites has been investigated. The UHMWPE-filled aramid fabric reinforced-epoxy composites have been fabricated with varying particle concentration from 0 to 4 wt% by using a vacuum assisted resin transfer molding (VARTM) technique. The erosive wear rate was evaluated at different impingement angles from 30° to 90° and at three different velocities of viz., 20, 30, and 40 m/s, and at constant standoff distance. The silica sand of size 150–280 µm was used as erodent. The results reveal that erosive wear rate of UHMWPE in aramid-epoxy composite exhibits lowest value as compared to unfilled A-E composites, and maximum erosion rate was observed at an impingement angle 60°, and the material behaves in a semiductile manner. The morphologies of eroded surface were examined by the scanning electron microscope (SEM) in order to establish the erosion mechanism of the composites.
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