Bie Analysis of Elastic Wave Scattering by a Nonlinear Interface

Material interfaces play an important role in determining the failure strength of composite materials and bonded materials. In order to evaluate mechanical properties of interfaces quantitatively by using an ultrasonic technique, it is necessary to make sure how elastic waves are scattered by interfaces. There are, however, many possibilities for mechanical properties of interfaces. One of the most important and interesting behaviors may be nonlinear characteristics such as contact-separation interaction and plastic large deformation at interfaces