Fatigue Study of Glass Fiber Reinforced Polymers with Carbon Nano Tubes
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Abstract
Fatigue is a common occurrence in aircraft structures. Due to the repeated flight cycles and frequent use, the elements of planes become weakened over time and they will eventually require attention and repair. This weakness manifests in cracks, which are microscopic at first. Composite materials have played a major part in weight reduction and today there are three main types in use: carbon fiber-, glass- and aramid- reinforced epoxy. In this project carbon nano tube (CNT) is added to the glass fiber reinforced polymer (GFRP) composite where quasi-isotropic orientation is used for laminates. The composite laminates are prepared by moulding process using CNT applying pressure of 50 bar. The CNT of 0.5%, 1% and 1.5% by vol. are added to the GFRP. The results of tensile and fatigue tests are assessed to study the influence of CNT addition on the fatigue strength.
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