Tension-Tension Fatigue of Nanoparticle Modified Polymeric Matrix Composites

摘要

In this study, nano and macro-scale particles were incorporated in the matrices of carbon fiber/epoxy composites to determine their effect on the response of these materials to static mechanical loading and tension-tension fatigue. Layered clay and titanium dioxide nanoparticles, as well as macro-scale alumina particles were used and composites with lay-up in [0/0/90/90/90]s configuration were investigated. Static tension test results showed that nanoparticles reinforcement influenced both the tensile strength and failure mode. It was also found that the fatigue behavior such as fatigue life and crack growth depend on the kind of particles and their concentration. Particularly, the effect of nano-scale particles on the growth of microcracks was observed by optical microscopy.