ANALYSIS OF FATIGUE BEHAVIOR OF GLASS/CARBON FIBER EPOXY COMPOSITE

Ujjwal Makkar, Mrinalini Rana, Amritpreet Singh

Abstract: There are so many applications of composite materials in the past 20 years due to strong demand in material performance set by technological developments, the use of composite materials has increased manifold. Most of these applications of the composite material are situations where the reduction in strength and durability due to fatigue process is very likely. This work has been a great need in the exact fatigue properties of glass and carbon fiber reinforced epoxy composites. In this study, both unidirectional carbon and glass fiber reinforced epoxy composites were detected for fatigue test by rotating bending machine.It was found that the probability distribution of the resistance fatigue of carbon fiber and glass fiber composite materials reinforced by fibers, at certain stress level, can be prepared by Weibull distribution of two parameter with statistical co-relation coefficient values greater than 0.80. Many methods were used to find out the parameters of the Weibull distribution. Kolmogorov-Smirnov goodness of fit was also used to amplify the results mentioned above. The Weibull distribution with two parameters is used to integrate the probability of default in the S-N relationship

Keywords: Composite, Fatigue test, S-N curve.

DOI: https://doi.org/10.15623/ijret.2015.0404038