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A method for determining the effect of random experimental error on the calculation of J and crack length extension Δa is presented. Predictor-corrector equations for determining Δa are also derived and their convergence properties studied. The application to a three-point bend specimen is considered and numerical results presented.
fractures (materials), J-integral, J-R curves, elastic plastic fracture mechanics, crack length extension, crack propagation
research engineer, John Hopkins University, Applied Research Laboratories, Laurel, Md.