Stress intensity factor in a contact problem of a coated layer in field of thermodiffusion

We present a model of a layered composite with thin layers bonded to the bounding plane or planes. The purpose of the paper is to investigate the contact shear stresses in the matrix, generated by fluxes of heat and mass diffusion. It was found that the singularity in the value of stresses at the circumference of the membrane depends on the ratio of the strata thickness to the membrane radius. The maximum value of the stress intensity factor takes place neither for (h to infty) co nor for small values of the ratio. Another phenomenon is the foundation effect, i.e. that for small ratio, depending on the geometry of the problem there is no singularity in the distribution of shear stress components at the vicinity of the membrane circumference. The results are presented also in the diagram form.