A Procedure for Estimating the Stress Intensity Factor of a Flattened Surface Crack at a Nozzle Corner

[+] Author and Article Information
A. S. Kobayashi, A. F. Emery, W. J. Love

University of Washington, Department of Mechanical Engineering, Seattle, Wash. 98195

A. Antipas

University of Washington

J. Pressure Vessel Technol 101(2), 181-183 (May 01, 1979) (3 pages) doi:10.1115/1.3454619 History: Received February 28, 1979; Online October 25, 2010


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.

Copyright © 1979 by ASME
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