Abstract
In this paper, experimental evaluation of thermal residual stress in 90°ply in CFRP cross- ply laminates was conducted. Temperature dependence of thermal expansion conefficient and Young's modulus was measured. Furthermore, deflection of unsymmetric cross-ply laminates was measured as a function of temperature to determine stress-free temperature and thermal residual stress (ply separation method). Thermal residual stress calculated by using the thermal expansion coefficient and Young' modulus was compared with the value obtained by the ply separation method.
