Abstract
This paper deals with the dynamic interaction among Penny-Shaped cracks under a normal impact load. Laplace and Hankel transforms are used to reduce the mixed boundary value problems to a set of dual integral equations. The solution is expressed in terms of a Fredholm integral equation of the second kind having a kernel with fast rate convergence. A numerical Laplace inversion technique is used to recover the time dependence of the solution. The dynamic stress intensity factor is determined and its dependence on time and the geometry parameter is discussed.
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