A method of J testing based on crack opening displacement for circumferential through-wall cracked pipes under combined tension and bending

Nam Su Huh, Ludwig Stumpfrock, Eberhard Roos, Yun Jae Kim, Young Jin Kim

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

Abstract

Application of the leak-before-break concept to nuclear piping requires accurate fracture mechanics assessment on pipes with postulated circumferential through-wall crack subject to combined tension and bending. One important element is determination of relevant J-resistance curve for pipes under combined loading. This paper provides experimental J estimation method for the circumferential through-wall cracked pipe under combined tension and bending, based on the load-crack opening displacement (COD) record to estimate J-resistance curve. To give confidence in the proposed method, the J results from detailed elastic-plastic finite element (FE) analysis are also compared with estimated J based not only on proposed method but also on conventional method using load-load line displacement, which shows that estimated J based on the proposed method provides reliable J estimates regardless of analysis condition, on the other hand, the conventional method using the load-load line displacement record gives erroneous results for shallow cracks.

Original languageEnglish
Title of host publicationAdvances in Safety and Structural Integrity 2005 - Proceedings of the International Symposium on Safety and Structural Integrity
PublisherTrans Tech Publications Ltd
Pages63-70
Number of pages8
ISBN (Print)3908451159, 9783908451150
DOIs
Publication statusPublished - 2006 Jan 1
EventInternational Symposium on Safety and Structural Integrity - Singapore, Singapore
Duration: 2005 Jan 172005 Jan 20

Publication series

NameSolid State Phenomena
Volume110
ISSN (Print)1012-0394

Other

OtherInternational Symposium on Safety and Structural Integrity
CountrySingapore
CitySingapore
Period05/1/1705/1/20

    Fingerprint

Keywords

  • Circumferential through-wall cracked pipe
  • Combined tension and bending
  • Crack opening displacement
  • J testing
  • Plastic η-factor

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Huh, N. S., Stumpfrock, L., Roos, E., Kim, Y. J., & Kim, Y. J. (2006). A method of J testing based on crack opening displacement for circumferential through-wall cracked pipes under combined tension and bending. In Advances in Safety and Structural Integrity 2005 - Proceedings of the International Symposium on Safety and Structural Integrity (pp. 63-70). (Solid State Phenomena; Vol. 110). Trans Tech Publications Ltd. https://doi.org/10.4028/3-908451-15-9.63