Thermal stress in rapidly heated graphite/epoxy composites

摘要

This paper describes testing and modeling to demonstrate the predictability of temperature and stress profiles in rapidly heated composite parts. Unidriectional filament wound, graphite/epoxy composite coupons were subjected to rapid heating from one side, while surface temperatures and deflections were measured. From the surface temperatures and thermal properties, the internal temperature profiles were calculated. An analytical model was used to predict the stresses and strains in the coupon and the curvature of the coupon during the transient heating and subsequent cooling.