| Crack length (mm) | θ | Theoretical N (cycles) | 2D FEM N (cycles) | XFEM N (cycles) | 2D FEM Error (%) | XFEM Error (%) |
| 5 | 60˚ | 221 | 248 | 230 | 12.217 | 4.072 |
| 7 | 60˚ | 1730 | 1950 | 1800 | 12.716 | 4.046 |
| 8.8 | 60˚ | 2500 | 2810 | 2600 | 12.400 | 4.000 |