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The stability of a long circumferential through-wall crack in a pipe subject to bending deformation

✍ Scribed by E. Smith

Publisher: Elsevier Science
Year: 1988
Tongue: English
Weight: 453 KB
Volume: 31
Category: Article
ISSN: 0013-7944
DOI: 10.1016/0013-7944(88)90089-6

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✦ Synopsis

Abstnct-Proceeding

from the experimentally vindicated basis that circumferential growth of a through-wall crack in a circular cylindrical 304 stainless steel pipe subject to bending loads, is associated with a constant crack tip opening angle, the stability of circumferential crack growth is analysed. The instability criterion is compared with the criterion obtained via the tearing modulus procedure, which assumes that the J-crack growth resistance curve is geometry independent. The two approaches give significantly diBerent criteria for a long circumferential crack, with the crack tip opening angle approach predicting a smaller length of pipe required for instability.

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