Stress Intensity Factors in Finite Orthotropic Plates with a Crack Under Mixed Mode Deformation

Abstract

Mixed mode fracture problem is analyzed for the finite orthotropic plate where an inclined crack parallel to the fibre direction is centrally placed. Modified mapping collocation method with both uniform stress and uniform displacement boundary conditions is utilized to calculate stress intensity correction factors for glass/epoxy and graphite/epoxy composites. Computed results are presented for selected combinations of crack length to width ratio L/W and plate aspect ratio H/W with various fibre orientations.