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A new method to calculate k1 for semi-elliptical surface cracks in finite plates

โœ Scribed by Zhao Dan; Wang Jia-Yong

Publisher
Elsevier Science
Year
1990
Tongue
English
Weight
306 KB
Volume
37
Category
Article
ISSN
0013-7944

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โœฆ Synopsis

Irwin's solution of the stress intensity factor K, for an embedded elliptical cracks was extended to solve for K, for semi-elliptical surface cracks in finite plates. A double series was set up to express the displacement of the crack surface, and the unknown coefficients of the series were determined by the crack surface displacements of two dimensional edge cracks and center cracks. The maximum displacement was determined with an energy method. The results reflected the influence of both the relative crack depth a/t and the relative crack length c/W. The cases in which elliptical axis ratio a/c > 1 were also included.

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