Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Figure 6.
Figure 7.
Figure 8.
Fatigue test details on different specimens under different temperatures_
| Stage of fatigue test | T1 | T2 | T3 | Working temperature |
|---|---|---|---|---|
| 1 | 0k | 0k | 0k | 20-40° |
| 2 | 100k | 100k | 100k | |
| 3 | 200k | 200k | 200k | |
| 4 | 300k | 300k | 300k | |
| 5 | 320k | 350k | 400k | |
| 6 | 340k | 370k | 420k | |
| 7 | 360k | 440k |
Crack length of different fatigue stage on specimens T1, T2, and T3_
| Specimens | T1(mm) | T2(mm) | T3(mm) | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Num of stage | cycles | al | ar | cycles | al | ar | cycles | al | ar |
| 1 | 0k | 0 | 0 | 0k | 0 | 0 | 0k | 0 | 0 |
| 2 | 100k | 0 | 0 | 100k | 0 | 0 | 100k | 0 | 0 |
| 3 | 200k | 0 | 0 | 200k | 0 | 0 | 200k | 0 | 0 |
| 4 | 300k | 0.42 | 1.78 | 300k | 0 | 0 | 300k | 0 | 0 |
| 5 | 320k | 0.44 | 2.4 | 350k | 0.8 | 1.3 | 400k | 0.6 | 0 |
| 6 | 340k | 2.11 | 6.97 | 370k | 1.93 | 3.90 | 420k | 3.27 | 0 |
| 7 | 360k | 4.05 | 11.4 | 440k | 6.71 | 1.4 | |||