EXISTENCE OF 2ND SLIP WAVES IN ANISOTROPIC ELASTIC MEDIA

Existence of subsonic second slip waves, a variant of interfacial (Sto neley) waves, is investigated using the Stroh sextic formalism. We hav e examined the second slip wave propagating along an interface between two identical half-infinite anisotropic media which have the same ori entation. Special attention is paid to exceptional transonic states wh ere the appearance of a certain bulk wave may prevent the existence of the second slip wave. By examining the impedance tensor at various tr ansonic states, we formulate an existence theorem for second slip wave s. Numerical examples are shown for materials with various symmetries, which give convincing evidence for the existence of second slip waves .