Thermal cleavage stresses in a piecewise-homogeneous plate

We analyze the thermal stressed state of a piecewise homogeneous body formed by a homogeneous matrix and a layer with different thermal properties applied to its surface. The free surface of the layer is heated by a uniformly distributed heat flow of limited duration. On the basis of the solution of-the corresponding nonstationary boundary-value problem of heat conduction, we determine the fields of quasistationary thermal stresses and strains. The numerical analysis is performed to show the possibility of using the obtained solutions in modeling thermal cleavage of brittle materials.