Experimental Evaluation of Damping of Fiber-Reinforced Composites

Abstract

Anisotropic behavior of damping in fiber-reinforced composites is well established. An attempt is made to measure all the six loss factors for glass fiber-reinforced epoxy (three in normal and three in shear) experimentally using free decay method. Different types of specimen such as beam, tubular and cuboidal in shape made from glass fiber-reinforced epoxy are tested under different loading conditions. The six loss factors (η11, η22, η33, η12, η13 and η23) so determined are compared with the analytical results.