Research Article
Prediction of Fatigue Life of Welded Joints Made of Fine-Grained Martensite-Bainitic S960QL Steel and Determination of Crack Origins
Table 4
Results of fatigue tests for welded joints of S960QL steel.
| Load εa (%) | Joint type | εapl (%) | εael (%) | Nf (cycles) | σa (MPa) |
| 0.15 | I | 0.0027 | 0.1473 | 6858 | 306 | I | 0.0013 | 0.1487 | 5195 | 309 | V | 0.0012 | 0.1488 | 13851 | 290 | V | 0.0012 | 0.1488 | 7036 | 311 |
| 0.20 | I | 0.0029 | 0.1971 | 3160 | 413 | I | 0.0025 | 0.1975 | 2444 | 421 | V | 0.0015 | 0.1985 | 1892 | 445 | V | 0.0020 | 0.1980 | 1755 | 400 |
| 0.25 | I | 0.0026 | 0.2474 | 1298 | 536 | I | 0.0025 | 0.2475 | 914 | 545 | I | 0.0063 | 0.2437 | 1610 | 534 | V | 0.0020 | 0.2480 | 1095 | 534 | V | 0.0040 | 0.2460 | 1418 | 478 |
| 0.30 | I | 0.0087 | 0.2913 | 772 | 604 | I | 0.0088 | 0.2912 | 969 | 610 | V | 0.0074 | 0.2926 | 553 | 652 | V | 0.0085 | 0.2915 | 699 | 624 |
| 0.40 | I | 0.0323 | 0.3677 | 268 | 740 | V | 0.0425 | 0.3575 | 178 | 788 | V | 0.0330 | 0.3670 | 274 | 713 |
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