The Elastic Compliance of Imperfect Interfaces: Review and Relationship to Ultrasonic Scattering
Thompson, R. Bruce
When a tensile load is applied to an elastic solid with an imperfect interface containing cracks or voids, the farfield displacement that would occur in the absence of the interface will be increased by localized deformations . This extra extension can be modeled as the response of two half-spaces connected by a distributed spring. The spring stiffness per unit area, K, is a function of the topography of the partially contacting surfaces.