1 PhD. Scholar, Department of Mechanical Engineering, National Institute of Technology, Warangal (A.P.)
2 Asst. Professor, Department of Mechanical Engineering, National Institute of Technology, Warangal (A.P.)
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The solid particle erosion behaviors of various polymers, and polymer based composites have been characterized by using air jet erosion wear tester. The erosion rates (ERs) of these composites have been evaluated at different impingent angles and impact velocities. Al2O3 particles of size ranging between 50 to 100 μm were used as erodent. Various parameters, such as particle size, velocity, erodent temperature and impact angle are important parameters for the erosive wear behavior of materials. In this work, the erosive wear behavior of various polymers and their composites are evaluated at three impact angles (30°,60° and 90°) and at three impact velocities (45,60 and 75 m/s) using Al2O3 particle as a erodent. As a result all the Polymer composites proved to have excellent anti-erosion properties compared with the other materials over the entire range. Also the influence of impact velocity on erosion rate was more dramatic at an oblique impact angle (30°) than at normal impact angle (90°). The wear rate was predicted to increase with increasing temperature for a constant particle velocity and impingement angle. The results showed that the wear losses varied markedly as a function of the impact angles, and that the maximum wear occurred at specific angles. Maximum wear occurred at 30° for polymer and its composites.
Polymer-matrix composites (PMCs), Al2O3 Solid particle, Impingent angle, Impact velocity
