Stress/MPa | Strain/ (×10−3) | measure point 1# | measure point 2# | measure point 3# | measure point 4# | measure point 5# | measure point 6# |
Wave velocity /km/s | Wave velocity /km/s | Wave velocity /km/s | Wave velocity /km/s | Wave velocity /km/s | Wave velocity /km/s | ||
0 | 0 | 3.04 | 3.03 | 3.06 | 3.36 | 3.36 | 3.41 |
0.99 | 0.93 | 3.08 | 3.05 | 3.07 | 3.39 | 3.40 | 3.42 |
1.98 | 1.58 | 3.11 | 3.05 | 3.07 | 3.41 | 3.40 | 3.43 |
2.82 | 2.19 | 3.12 | 3.06 | 3.09 | 3.42 | 3.39 | 3.42 |
3.69 | 2.95 | 3.09 | 3.05 | 3.09 | 3.39 | 3.40 | 3.43 |
Specimen surface cracks (4.69) | 3.64 | 3.01 | 2.95 | 2.99 | 3.36 | 3.37 | 3.39 |
Crack extension stage 1 (5.42) | 4.53 | 2.97 | 2.74 | 2.85 | 3.21 | 3.10 | 3.20 |
Crack extension stage 2 (7.48) | 5.28 | 2.89 | 2.69 | 2.78 | 3.23 | 3.04 | 3.16 |
Crack extension stage 3 (9.48) | 6.17 | 2.87 | 2.56 | 2.68 | 3.13 | 3.04 | 3.14 |
Specimen damage | 8.06 | 2.58 | 2.59 | 2.61 | 2.59 | 2.67 | 2.97 |