A flattened surface crack at a nozzle corner is modeled by a segment of a semi-elliptical crack in a finite thickness plate with matching crack contour and crack pressure corresponding to the normal stresses in the uncracked nozzle corner. Lacking other solutions for comparison, a qualitative comparison was made between nondimensionalized stress intensity factors at the deepest crack penetration with those obtained experimentally for similar corner cracks in epoxy models.
A Procedure for Estimating the Stress Intensity Factor of a Flattened Surface Crack at a Nozzle Corner
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Kobayashi, A. S., Emery, A. F., Love, W. J., and Antipas, A. (May 1, 1979). "A Procedure for Estimating the Stress Intensity Factor of a Flattened Surface Crack at a Nozzle Corner." ASME. J. Pressure Vessel Technol. May 1979; 101(2): 181–183. https://doi.org/10.1115/1.3454619
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