TIME-DEPENDENT RESPONSE OF IM7 5260 COMPOSITES SUBJECTED TO CYCLIC THERMOMECHANICAL LOADING/

In this study the response of IM7/5260 composites subjected to cyclic thermo-mechanical loading for loading times of Lip to six months is me asured. In a previous paper it was shown that, when integrated with a functional viscoplastic model, Schapery's non-linear theory allows pre dictions of the viscoelastic-viscoplastic response for cyclic loading under isothermal conditions. In this paper, the ability of these model s to make long-term predictions for cyclic thermo-mechanical loading c onditions is considered. Reasonable agreement between measured strains and predictions (to within 7%) is obtained for all laminates.