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The effect of a kink, a U-loop and a T-junction on the instability of a circumferential through-wall crack in a stainless steel piping system

✍ Scribed by E. Smith

Publisher: Elsevier Science
Year: 1989
Tongue: English
Weight: 857 KB
Volume: 33
Category: Article
ISSN: 0013-7944
DOI: 10.1016/0013-7944(89)90043-x

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✦ Synopsis

Ahstraet-The paper analyses simple models that simulate the effect of: (a) a kink, (b) a U-loop and (c) a T-junction on the stability of a circumferential through-wall crack in a Type 304 stainless steel piping system. The instability criterion is expressed in terms of the applied and material tearing moduli, i.e. Tpp and TMAr, or equivalently in terms of an effective pipe. length Lxrr. Ls,, is expressed as a function of the position of the cracked section for each of the model piping systems and it is therefore possible to specify the positions where TApp is a maximum, and identify these positions in relation to the bends in the three systems.

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