Abstract
Propagation of the SH wave in a layered half space is considered. Reflection and transmission coefficients at an imperfectly bonded interface are analyzed with use of the ray expansion technique. This paper defined the bonding strength at the interface as Joint Coefficient Dz. It is shown that the SH wave in the half space is governed by the first and second reflected waves. When the bonding at the interface is strong, the first reflected wave contributes to the reflection energy. When the bond is weak, however, the second reflected wave contributes to the energy. The shutting energy in a dissimilar plate is also obtained. The energy is very sensitive to the strength of interface bonding, when the wavelength is short.
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