Research Article
Fracture Characteristics Analysis of Pressured Pipeline with Crack Using Boundary Element Method
Table 2
Crack growth property on the oil pipe with different corrosion conditions.
| | Pipe type | Uncorroded oil pipe | Oil pipe with general metal loss |
| | Crack direction | Circumferential direction | Longitudinal direction | Circumferential direction | Longitudinal direction |
| | Final crack length (mm) | 20.3678 | 14.6009 | 9.7177 | 11.7790 |
| | Final crack depth (mm) | 6.6421 | 6.5192 | 3.0931 | 3.3278 |
| | Fatigue loading cycle (times) | 10,245,885,974 | 390,583,049 | 483,412,414 | 23,537,533 |
| | Maximal effective SIF in crack growing process (MPa·m1/2) | 22.128 | 49.908 | 30.379 | 86.650 |
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