Probabilistic fracture toughness of welded joint for offshore structures
- Univ. of Petroleum, Shandong, Dongying (China)
- China Offshore Oil Engineering Design Corp., Tianjin (China)
The paper investigated the probabilistic properties for fracture toughness of offshore steel welded joint at 26 C, 0 C, {minus}20 C, {minus}40 C and {minus}60 C by experiment. On the basis of experimental data, it can be proved by statistical method that probabilistic critical CTOD (Crack Tip Opening Displacement) of A131 steel welded joint under different temperatures can be represented approximately by Weibull distribution, and their distribution parameters are also obtained. The P-T-{delta}{sub C} curve is established, which is used to describe the relationship among three parameters: CTOD, temperature and probability. These results are very useful for fracture reliability analysis and defect assessment of offshore structures.
- OSTI ID:
- 403614
- Report Number(s):
- CONF-9606279--; ISBN 0-7918-1492-0
- Country of Publication:
- United States
- Language:
- English
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