Resistência ao cisalhamento iosipescu do compósito laminado reforçado com tecido de fibras de vidro/epóxi

Abstract

This work studies the shear resistance of the composite reinforced with glass/epoxy fibers of 8 layers. The composite materials are recognized by their excellent combination of high structural stiffness and low weight. Their inherent anisotropy allows the designer to tailor the material in order to achieve the desired performance requirements. Thus, it is very important to develop tools in order to allow the designer to obtain optimized designs considering the structural requirements, functional characteristics and restrictions imposed by the manufacturing process. Within these requirements, this work considers the components manufactured from polymer reinforced materials (epoxy and glass fiber). To this finality, the beams presented incision in V and the results, the influence of the fibers orientation as well as the stacking sequences was investigated. Finally, it was proposed a design cycle which integrates experimental and theoretical procedures in order to get optimized designs in a faster and reliable way. The samples assayed in elastic regimen conditions and rupture, had presented tension and module values of high shear for samples with fibre orientation with angle 45o and the samples with 0o e 90o had presented low values, due to the degreeof anysotropy or the material.