Torsional Impact on a Penny-Shaped Crack at the Interface of a Semi-infinite Medium and an Elastic Layer

Abstract

Purpose of this article is to inquire the impact response of torsional load on a penny shaped crack positioned at the join of a semi-infinite medium and a finite layer of different engineering material. The considered problem has been transformed to the solution of a pair of dual integral equation adopting Laplace and Hankel transform technique. Later the transformed problem is converted to a Fredholm integral equation. The integral equation is solved numerically and for numerical Laplace inversion, Zakian’s Algorithm has been employed to find the time-dependent solution. The stress intensity factor is obtained around the crack periphery and plotted for several materials and parameters.