Tensile tests of quasi-isotropic (0/45/-45/90)s Carbon Fiber Reinforced Plastic (CFRP) laminate at low (-100°C), room (25°C), and high (150°C) temperatures showed that the transverse crack propagation and interlaminar delamination growth behavior are obviouslyaffected by the temperature. In the present study, the three-dimensional finite element method (FEM) is applied to a quasi-isotropic CFRP laminate to investigate the interlaminar free edge stresses and ply stresses under combined thermal and mechanical loadings. The mechanical properties ofa lamina (T800H/#3631) are obtained experimentally as a function of temperature and both the temperature-dependent mechanical properties and the idea of stress-free temperature are taken into account. Resulting stresses, including initial residual thermal ones due to the stress-free temperature, are used to discuss the above mentioned experimental results, which leads to the temperature-dependent critical properties for damages such as transverse crack and delamination.
All Science Journal Classification (ASJC) codes
- Ceramics and Composites
- Mechanics of Materials
- Mechanical Engineering