Effect of nozzle geometry on leak-before-break analysis of pressurised piping

Huh, Nam‐Su; Kim, Yun Jae; Kim, Young Jin; Yu, Y.J.; Pyo, Chang-Ryul

doi:10.1016/s0013-7944(01)00044-3

Cited by 15 publications

(1 citation statement)

References 4 publications

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“…Moreover, it is judged that the acceptable LBB case can be made if the leakage is detectable before the crack length reaches a critical length. Studies on unstable fracture due to a crack and the evaluation of the crack opening displacement or crack opening area for leakage inspection of a structure under a monotonic and a cyclic load have been performed for various aspects (ASME, 1995;Hasegawa, 1983;Hasegawa, 1991;Kim, 2001;Huh, 2000;Choi, 200 l) .…”

Section: Introductionmentioning

confidence: 99%

Crack opening behavior of penetrated crack under fatigue load

Nam

Ahn

2002

KSME International Journal

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The leak-before-break (LBB) behaviors of a structural component under high and low fatigue loads are an important problem in nuclear power plants, liquid nitrogen gas tankers and chemical plants. This paper is an experimental study to evaluate the crack opening behavior after penetration for plate and pipe specimens. Crack opening displacement after penetration under low fatigue load could be satisfactorily determined at the center of the plate thickness regardless of the specimen size. In the case of high fatigue load, it is shown that the crack opening displacement at the center of a penetrated crack can be derived using the gross stress, O'G, and the front surface crack length, as, together with the back surface crack length, abo

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Section: Introductionmentioning

confidence: 99%