Induced discontinuities in thermoviscoelastic solids of integral type

In this paper we study the induced discontinuities associated with a discontinuity wave of order N >= 1 propagating through a homogeneous anisotropic linear thermoviscoelastic solid whose heat flux vector depends upon the past history of the temperature gradient. After recalling the results of 1, 2, we state the evolution law of the induced discontinuity vector along the rays associated with the wave front. The results obtained depend on N through the mean curvature of the wave front