Determination of J-Integral Using the Load-COD Record for Circumferential Through-Wall Cracked Pipes
- Authors
- Huh, Nam-Su; Kim, Yun-Jae
- Issue Date
- 11월-2008
- Publisher
- ASME-AMER SOC MECHANICAL ENG
- Keywords
- circumferential through-wall cracked pipe; combined tension and bending; crack opening displacement; J testing; plastic eta-factor
- Citation
- JOURNAL OF PRESSURE VESSEL TECHNOLOGY-TRANSACTIONS OF THE ASME, v.130, no.4
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF PRESSURE VESSEL TECHNOLOGY-TRANSACTIONS OF THE ASME
- Volume
- 130
- Number
- 4
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/122501
- DOI
- 10.1115/1.2967830
- ISSN
- 0094-9930
- Abstract
- The present paper provides experimental J estimation equation based on the load-crack opening displacement (COD) record for testing the circumferential through-wall cracked pipe under combined tension and bending. Based on the limit analysis and the kinematically admissible rigid-body rotation field, the plastic eta-factor for the load-COD record is derived and is compared with that for the load-load line displacement record. Comparison with the J results from detailed elastic-plastic finite element analysis shows that the proposed method based on the load-COD record provides reliable J estimates even for shallow cracks (small crack angle), whereas the conventional approach based on the load-load line displacement record gives erroneous results for shallow cracks. Thus, the proposed J estimation method could be recommended for testing the circumferential through-wall cracked pipe, particularly with shallow cracks.
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Collections - College of Engineering > Department of Mechanical Engineering > 1. Journal Articles
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