Reference stress based J and COD estimation of circumferential through-wall cracked elbows under in-plane bending

Chul Goo Kim, Kyung Dong Bae, Yun Jae Kim, Young Jin Oh, Peter J. Budden

Research output: Contribution to journal › Article

2 Citations (Scopus)

Abstract

This paper proposes J-integral and crack opening displacement (COD) estimation equations based on the reference stress method for circumferential through-wall cracked elbows under in-plane bending. For best estimates of J and COD, an optimized reference load, used to define the reference stress, is given. The proposed equations are compared with detailed finite element results. They are further validated against eight published full-scale pipe test data. Comparison of crack initiation and maximum loads shows good agreement.

Original languageEnglish
Pages (from-to)303-317
Number of pages15
JournalEngineering Fracture Mechanics
Volume142
DOIs
Publication statusPublished - 2015 Jan 1
Externally publishedYes

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Cracks
Crack initiation
Loads (forces)
Pipe

Keywords

  • Circumferential through-wall crack
  • Crack opening displacement
  • Elbow
  • Experimental validation
  • J-integral
  • Leak-before-break
  • Optimized reference load
  • Reference stress method

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Reference stress based J and COD estimation of circumferential through-wall cracked elbows under in-plane bending. / Kim, Chul Goo; Bae, Kyung Dong; Kim, Yun Jae; Oh, Young Jin; Budden, Peter J.

In: Engineering Fracture Mechanics, Vol. 142, 01.01.2015, p. 303-317.

Research output: Contribution to journal › Article

Kim, CG, Bae, KD, Kim, YJ, Oh, YJ & Budden, PJ 2015, 'Reference stress based J and COD estimation of circumferential through-wall cracked elbows under in-plane bending', Engineering Fracture Mechanics, vol. 142, pp. 303-317. https://doi.org/10.1016/j.engfracmech.2015.06.022
Kim CG, Bae KD, Kim YJ, Oh YJ, Budden PJ. Reference stress based J and COD estimation of circumferential through-wall cracked elbows under in-plane bending. Engineering Fracture Mechanics. 2015 Jan 1;142:303-317. https://doi.org/10.1016/j.engfracmech.2015.06.022
Kim, Chul Goo ; Bae, Kyung Dong ; Kim, Yun Jae ; Oh, Young Jin ; Budden, Peter J. / Reference stress based J and COD estimation of circumferential through-wall cracked elbows under in-plane bending. In: Engineering Fracture Mechanics. 2015 ; Vol. 142. pp. 303-317.
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