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

研究成果: Conference contribution

抄録

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.

本文言語English
ホスト出版物のタイトルAdvances in Safety and Structural Integrity 2005 - Proceedings of the International Symposium on Safety and Structural Integrity
出版社Trans Tech Publications Ltd
ページ63-70
ページ数8
ISBN(印刷版)3908451159, 9783908451150
DOI
出版ステータスPublished - 2006
イベントInternational Symposium on Safety and Structural Integrity - Singapore, Singapore
継続期間: 2005 1 172005 1 20

出版物シリーズ

名前Solid State Phenomena
110
ISSN(印刷版)1012-0394

Conference

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

ASJC Scopus subject areas

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

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