Experiment on the In-Plane Elastic Properties of Multi-Laminated Fiber Reinforced Plastics

Abstract

In-plane elastic properties of symmetric laminate were studied before. In particular, symmetric laminate in which elastic axes of identical layer sheets were made equiangular were proved to be in-plane isotropic. This paper shows Young's modulus of 3 ply and 4 ply laminated fiber reinforced plastics. From these result, Young's modulus of the laminated plate become not circular but star-shaped.