Structural stability of composite laminates exposed to high temperature or fire damage.

摘要

For composite materials to be used especially in manufacturing of aerospace structures, their safety and reliability under a variety of circumstances must be assured. Since they will be under the effect of high temperature and fire, all the properties they undergo during these circumstances must be known.;The main objective of this research is to better understand the structural integrity of composite structures that are exposed to fire or intense heat damage and the parameters affecting their critical buckling loads under these circumstances. To study these, a special FORTRAN program is written. At the first part, the laminate is exposed to the uniform heat source and the distribution of temperature through the thickness is calculated by solving one-dimensional heat transfer equations. Then, the stress analysis is conducted and some of the parameters effecting the distribution of critical buckling loads of the laminate with respect to time are studied.