Investigating the Effects of Crack Orientation and Defects on Pipeline Fatigue Life Through Finite Element Analysis
, , , oraz | 29 kwi 2024
O artykule
Data publikacji: 29 kwi 2024
Zakres stron: -
DOI: https://doi.org/10.2478/fas-2023-0001
Słowa kluczowe
© 2023 Tayeb Kebir et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.
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Test simulation conditions with different values of relative depth a/t.
| Test | ||||
|---|---|---|---|---|
| 1 | 350 | 344 | 3 | 0.30 |
| 2 | 350 | 342 | 4 | 0.25 |
| 3 | 350 | 340 | 5 | 0.20 |
| 4 | 350 | 339 | 6 | 0.16 |
Mechanical properties of X52 steel. (Harter, 2002; NASA, 2001)
| Young’s modulus |
200 |
| Poisson’s ratio |
0.30 |
| Yield stress σY (MPa) | 410 |
| Ultimate tensile stress σUTS (MPa) | 498 |
| Elongation |
35 |
| Toughness fracture (Mpa.mm1/2) | 95 |
| Threshold (MPa.mm1/2) | 7 |
Tests simulation conditions with different values of outer diameter Do.
| Test | ||||
|---|---|---|---|---|
| 1 | 350 | 340 | 5 | 0.2 |
| 2 | 345 | 335 | 5 | 0.2 |
| 3 | 340 | 330 | 5 | 0.2 |
| 4 | 335 | 325 | 5 | 0.2 |
Tests simulation conditions with different values of aspect ratio a/c.
| Test | Depth | Length | Aspect ratio |
|---|---|---|---|
| 1 | 1 | 1 | 1 |
| 2 | 1 | 1.2 | 0.83 |
| 3 | 1 | 1.4 | 0.71 |
| 4 | 1 | 1.6 | 0.62 |
| 5 | 1 | 1.8 | 0.55 |
| 6 | 1 | 2 | 0.50 |
Mechanical properties of X52 steel for NASGROW model. (Harter, 2002; NASA, 2001)
| Young’s modulus |
200 |
| Poisson’s ratio |
0.30 |
| Yield stress σY(MPa) | 410 |
| Ultimate tensile stress σUTS(MPa) | 498 |
| Elongation |
35 |
| Toughness fracture |
95 |
| Threshold |
200 |
| 0.65 | |
| 0.001 | |
| 1.15e-10 | |
| 2.41 |