Rapid Calculation of Stress Intensity Factors

by Pedro Albrecht, (M.ASCE), Assoc. Prof. of Civ. Engrg.; Univ. of Maryland, College Park, Md.,
Kentaro Yamada, Asst.; Nagoya Univ., Nagoya, Japan; formerly, Post-Doct. Fellow, Dept. of Civ. Engrg., Univ. of Maryland, College Park, Md.,

Serial Information: Journal of the Structural Division, 1977, Vol. 103, Issue 2, Pg. 377-389

Document Type: Journal Paper

Discussion: Frank Karl H. (See full record)
Discussion: Johnson W. S. (See full record)
Closure: (See full record)


A method for computing stress intensity factors for cracks embedded in structural details is described. It consists of adding to accepted solutions for cracks in finite plates and bodies of uniform contour a geometry correction factor which accounts for the stress gradient produced by the geometric discontinuity of the detail. This correction factor is determined by integrating away the stresses normal to the line where the crack is to be inserted. The method is applied to the case of a crack emanating from a circular hole in a plate, and the results are found to be in good agreement with Bowie's numerical solution. Values of the stress intensity factor for cracks emanating from spherical weld porosities, and part-through cracks at stiffeners and cover plate ends are computed.

Subject Headings: Cracking | Plates | Geometrics | Numerical methods | Discontinuities | Agreements and treaties | Welding | Case studies

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