Influence of thermal deformation on the stress state of heat-proof coatings

In order to study the effect of thermal deformation behaviour and magnitude on a stress level in heat-proof coatings, an investigation into the dependence of thermal expansion and shrinkage in destructing composite materials on temperature, heating rate and mode, chemical composition of gas medium and pressure as well as a specimen size and material aniso-tropy was carried out. Thermal stress analysis is done by means of three dimensional elasticity theory methods testified to considerable effect of conditions under which thermal deformation coefficients are obtained, on stress level and stress distribution through the coating thickness for glass-fiber-plastic cylindrical element.