Interfaces are formed e.g. by the contact surface of different materials of heterogeneous
solids or by crack flanks within damaged bodies. Since the combination of
temperature evolution and mechanical loadings influences significantly the deformation
and thermal behavior of interfacial layers, these failure layers are thermally and mechanically
described in the presented approach in a fully coupled sense. Thermomechanical
interface descriptions can be used for prediction of crack propagation and, as soon as a
designated failure layer exists, to predict the thermomechanical behavior of the observed
solid. The presented interface approach for finite deformation introduces a consistent
framework derived from principle thermodynamical laws.