Table 1 Test plan.
No. | Number of test pieces | Stress/MPa | Frequency/Hz | Amplitude /MPa | σmax/MPa | σmin/MPa | σm/MPa |
|---|---|---|---|---|---|---|---|
N1 | 5 | 25 | 2 | 5 | 30 | 20 | 25 |
N2 | 5 | 25 | 2 | 11 | 36 | 14 | 25 |
N3 | 5 | 25 | 2 | 15 | 40 | 10 | 25 |
No. | Number of test pieces | Stress/MPa | Frequency/Hz | Amplitude /MPa | σmax/MPa | σmin/MPa | σm/MPa |
|---|---|---|---|---|---|---|---|
N1 | 5 | 25 | 2 | 5 | 30 | 20 | 25 |
N2 | 5 | 25 | 2 | 11 | 36 | 14 | 25 |
N3 | 5 | 25 | 2 | 15 | 40 | 10 | 25 |