Table 6 Cyclic loading stress parameters
Initial residual stress (MPa) | Sample number | Equivalent stress level | Loading stress (MPa) | Loading force peak (N) | Loading force valley (N) |
|---|---|---|---|---|---|
σxsuf= 196.8 σysuf= 195.6 | 1 | 0.65σ0.2 | 139 | 5560 | 556 |
2 | 0.75σ0.2 | 192 | 7680 | 768 | |
3 | 0.85σ0.2 | 243 | 9720 | 972 | |
4 | 0.95σ0.2 | 292 | 11680 | 1168 | |
5 | ‒ | ‒ | ‒ | ‒ |