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Advances in J-integral estimation of circumferentially surface cracked pipes

CHO, D. H. et al.

Fatigue & fracture of engineering materials & structures VOL 34; NUMBER 9, ; 2011, 667-681 -- Blackwell Publishing Ltd -- 2011

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  • Title:
    Advances in J-integral estimation of circumferentially surface cracked pipes
  • Author: CHO, D. H.;
    SEO, H. B.;
    KIM, Y. J.;
    CHANG, Y. S.;
    JHUNG, M. J.;
    CHOI, Y. H.
  • Found In: Fatigue & fracture of engineering materials & structures VOL 34; NUMBER 9, ; 2011, 667-681
  • Journal Title: Fatigue & fracture of engineering materials & structures
  • Subjects: Electrical and Electronic Engineering; Mechanical Engineering; Civil Engineering; LCC: TA418; Dewey: 620.1123
  • Publication Details: Blackwell Publishing Ltd
  • Language: English
  • Abstract: Abstract This paper describes enhanced J-integral estimation schemes for pipes with circumferential semi-elliptical cracks subjected to tensile loading, global bending and internal pressure. These schemes are given in two different forms to cover the wide ranges of geometries and material parameters; the modified GE/EPRI method and the modified reference stress method. In the former method, new plastic influence functions for fully plastic J-integral estimation are developed based on extensive three-dimensional finite element calculations. In the latter method, new optimized reference loads are suggested and utilized to predict the J values. To verify the feasibility of these two schemes, J-integral values obtained from further detailed FE analyses are compared to those from the proposed schemes. Because the estimated J-integrals agree fairly well with the detailed FE analysis results, the new solutions can be applied for accurate structural integrity assessment of different size pipes with a circumferential surface crack.
  • Identifier: Journal ISSN: 8756-758X
  • Publication Date: 2011
  • Accrual Information: Monthly
  • Shelfmark(s): 3897.385000
  • UIN: ETOCRN296210182

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