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 language | English |
|---|---|
| Pages (from-to) | 303-317 |
| Number of pages | 15 |
| Journal | Engineering Fracture Mechanics |
| Volume | 142 |
| DOIs | |
| Publication status | Published - 2015 Jan 1 |
| Externally published | Yes |
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
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Cite this
Kim, C. G., Bae, K. D., Kim, Y. J., Oh, Y. J., & Budden, P. J. (2015). Reference stress based J and COD estimation of circumferential through-wall cracked elbows under in-plane bending. Engineering Fracture Mechanics, 142, 303-317. https://doi.org/10.1016/j.engfracmech.2015.06.022