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Abstract

Friction and dry sliding wear behavior of [0°/90°]_S and unidirectionally (UD) oriented carbon-epoxy (C-E) composites has been studied using block-on-roller test set up. The dry sliding wear experiments were conducted for the following C-E composites namely 0°/90°, parallel and anti-parallel surfaces with respect to the sliding direction. The coefficient of friction and wear of the composites for two different loads and various sliding velocities have been determined. It was observed that the wear loss increases linearly with increase in sliding velocity/loads. Besides conventional weighing, determination of the coefficient of friction and examination of worn surface features by scanning electron microscopy (SEM) were undertaken to study the tribological behavior. Disorientation of fibers, fiber fracture, matrix deformation and wear debris damage mechanisms were observed under SEM. Composite wear was accompanied by material transfer onto the counter surface.

Keywords

block-on-roller wear tester carbon-epoxy composite fiber orientation scanning electron microscopy.

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Effect of Normal Load and Sliding Velocity on Friction and Wear Behavior of Carbon Fiber Reinforced Epoxy Composites

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