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 η-factorfor 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.
| Original language | English |
|---|---|
| Pages (from-to) | 414021-414027 |
| Number of pages | 7 |
| Journal | Journal of Pressure Vessel Technology, Transactions of the ASME |
| Volume | 130 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 2008 Nov |
Keywords
- Circumferential through-wall cracked pipe
- Combined tension and bending
- Crack opening displacement
- J testing
- Plastic η-factor
ASJC Scopus subject areas
- Safety, Risk, Reliability and Quality
- Mechanics of Materials
- Mechanical Engineering