Comparison of models for notched strength of carbon fibre reinforced polymer laminates

A modified point stress criterion has been used for evaluating the tensile fracture strength of AS-4 carbon-984A1 epoxy [0/90]4s and [0/± 45/90]2s composite laminates with various hole diameters and specimen widths. The results correlate well with the existing test results, and with those predicted from an effective crack growth model.