Effects of Fiber Orientation on Mechanical Properties and Analysis of Failures for Kevlar Epoxy Reinforced Composites
Abstract
This paper is an outcome of investigation made on Kevlar epoxy composites made by altering the fiber orientation. It is an important region to emphasize the effect of fiber angle in the composite that results in performance. In the present research the Kevlar fiber is made by 18 layers with different angular orientation from 0o to 90o. While preparing the composite the reinforcement is made by the addition of SiC and acetone to have the firm binding ability. In addition to that right from the first layer of the fiber to the 18th layer the angle is varied progressively from 0o to 90o. After the fabrication process the Kevlar composite is tested as a flat plate and a flat plate with a circular hole in it. The analysis has involved the maximum stress theory and Tsai-wu theory for the findings on fiber orientation against failure. The test results have yielded that the fiber orientation has the significant effect on the composite plate with a circular hole in it.
Index Terms: Kevlar epoxy composites, Mechanical characterization, Failure analysis
