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The article contains the solution of a semi-infinite crack present at the interface of two dissimilar orthotropic strips sandwiched between dissimilar orthotropic strips. The crack is moving with a constant velocity, and the surface is under shear wave disturbance. Using the Fourier integral transform, the standard form for the Wiener–Hopf (W–H) equation is obtained for the proposed mathematical model, which is solved using the W–H method. The approximate analytic expressions for stress intensity factor, normalised stress intensity factor (NSIF) and the crack energy have been obtained for the considered crack problem. The behaviour of NSIF and normalised crack energy has been graphically presented for different crack propagation velocities and various ratios of depths of the strips of the composite material for different particular cases. The novelty of the article lies in finding the approximate analytic solutions of the proposed mathematical model using the W–H method, finding the expression for the length of the contact region near the crack tip and the pictorial presentations of the impact of exterior strips on the two dissimilar bonded strips containing the crack through finding the stress magnification factor. [ABSTRACT FROM AUTHOR]

This paper contains the solution to the problem of a semi-infinite moving crack situated in an orthotropic strip bonded between two identical strips. The crack moves with a constant velocity, and the surface is under shear wave disturbance. We first examine the equations of elasticity, which include equilibrium equations and stress and displacement constitutive relations with the model-specific continuity and boundary conditions. Using the Fourier integral transform, the standard form for the Wiener–Hopf (W-H) equation is obtained, which is solved using the W-H method. The analytical expressions for the considered crack problem have been obtained for stress intensity factor (SIF), normalized stress intensity factor (NSIF), and stress magnification factor (SMF). The behavior of NSIF has been graphically presented for particular cases of composite materials for different crack propagation velocities and various depth ratios of the strips. The novelty of this paper lies in the analytic solutions using the W-H method for the semi-infinite moving crack problem under the influence of anti-plane shear waves. The pictorial presentations of normalized SIF clearly show their dependency on strip depths, crack propagation velocities and elastic constants. [ABSTRACT FROM AUTHOR]