Impact Response of Glassfiber Reinforced Plastics with Surface Cracks at Low Temperature

Abstract

The plane strain dynamic singular stress problem for glassfiber reinforced plastics with surface cracks at low temperatures is considered. The layered composite is made of a layer bonded between two layers of different physical properties, and the surface layers contain the cracks normal to the interfaces. Laplace and Fourier transforms are used to formulate the problem in terms of a singular integral equation. The singular integral equation is solved by using the Gauss-Jacobi integration formula. Numerical calculations are carried out, and the effects of the crack length and the temperature on the dynamic stress intensity factors of the embedded and edge cracks are shown graphically.