Abstract
The problem of a Griffith crack of constant length propagating at a uniform speed in a plane non-homogeneous medium under uniform load is investigated. The equilibrium equations for the non-homogeneous medium are solved by using the Fourier transforms and then the problem is reduced to the solution of dual integral equations. Solving the dual integral equations we obtain the expression for the dynamic stress intensity factor at the edge of the crack. Finally the numerical results for the stress intensity factor are obtained which are displayed graphically to show the effect of the material non-homogeneity on the stress intensity factor.
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