This study investigated the effects of an impact load on a pair of colinear rigid strips in an infinite isotropic medium. This investigation is prompted by the presence of a mixed boundary value problem arising from the interaction of waves. Utilizing Fourier and Laplace transformations, along with integral transformation techniques, the mixed boundary value problem is converted into a dual integral equation. Subsequently, the perturbation technique is employed to solve these integral equations, and the Hilbert transformation is utilized for effective simplification and solution. The computed Stress Intensity Factor is then graphically depicted over time, illustrating its behavior in isotropic materials.