Assessment of steam generator tubes with dual axial through-wall cracks

Y. S. Chang, S. I. Moon, Y. J. Kim, J. H. Lee, M. H. Song, Y. H. Choi

Research output: Chapter in Book/Report/Conference proceedingConference contribution


In this paper, conservatisms of current plugging criteria on steam generator tubes are reviewed and six new failure prediction models for dual through-wall cracks are proposed. In order to determine the optimum ones among these local or global failure prediction models, a series of plastic collapse tests and corresponding finite element analyses are carried out with respect to two adjacent axial through-wall cracks in thin plates. Then, reaction force model, plastic zone contact model and COD (Crack Opening Displacement) base model were selected as the optimum ones for integrity assessment of steam generator tubes with dual cracks.

Original languageEnglish
Title of host publicationSafety and Structural Integrity 2006
PublisherTrans Tech Publications Ltd
Number of pages6
ISBN (Print)3908451299, 9783908451297
Publication statusPublished - 2007
Externally publishedYes
EventInternational Symposium on Safety and Structural Integrity 2006 - Jeju, Korea, Republic of
Duration: 2005 Dec 82005 Dec 10

Publication series

NameSolid State Phenomena
ISSN (Print)1012-0394


ConferenceInternational Symposium on Safety and Structural Integrity 2006
Country/TerritoryKorea, Republic of


  • Collinear cracks
  • Failure prediction model
  • Parallel cracks
  • Plastic collapse
  • Plugging criteria
  • Steam generator tubes
  • Thin plates

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • General Materials Science
  • Condensed Matter Physics


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