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Stress intensity factors for a circumferential crack emanating from a notch in a round tensile bar

✍ Scribed by P. Lefort

Publisher: Elsevier Science
Year: 1978
Tongue: English
Weight: 502 KB
Volume: 10
Category: Article
ISSN: 0013-7944
DOI: 10.1016/0013-7944(78)90043-7

No coin nor oath required. For personal study only.

✦ Synopsis

A semicmpirical formula for the stress intensity factors for short cracks is presented. Once the crack has reached a critical depth, designated as aa, the notch has no effect on the crack tip stress field and the stress intensity factor for a smooth bar with crack depth (n + 4 is applicable, where d is the notch depth. The solution for shallow cracks less than aa, which are inlluenced by the proximity of the notch, are determined from the maximum stress and stress gradient at the root of the notch and the smooth bar solution at at,. The results are applicable for a wide variety of notch geometries ranging from semi-circular notches to deep hyperbolic shapes.

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