Research Article
Investigation of Stress Concentration and Casing Strength Degradation Caused by Corrosion Pits
Table 2
Double pits stress concentration factor of steel (calculated).
| Category | Center distance ratio | Outer edges | Pits bottom | Junction | | | | | Average | | | Average |
| Single pit | 0 | 1.10 | 1.09 | 1.09 | | | 1.75 | | 1.75 | Double pits | 1 | 1.56 | 1.49 | 1.52 | 2.04 | 2.04 | 2.04 | 2.17 | 2.17 | 1.5 | 1.58 | 1.56 | 1.57 | 2.19 | 2.14 | 2.17 | 2.56 | 2.56 | 2 | 1.40 | 1.37 | 1.39 | 2.01 | 2.02 | 2.02 | 2.52 | 2.52 | 3 | 1.36 | 1.31 | 1.34 | 1.85 | 1.92 | 1.89 | 1.18 | 1.89 |
|
|