Research Article
Crack Detection and Evolution Law for Rock Mass under SHPB Impact Tests
Table 3
Crack quantitative results.
| | Number | Impact velocity (m/s) | Captured frames (frame) | Started crack frame (frame) | Crack propagation rate (pixels/frame) | |
| | bxy1 | 4.687 | 26 | 6 | 299.50 | 0.98 | | bxy2 | 5.150 | 26 | 11 | 332.30 | 0.99 | | bxy3 | 4.443 | 23 | 11 | 417.29 | 0.96 | | bxy4 | 4.385 | 23 | 10 | 348.49 | 0.99 | | bxy5 | 3.377 | 27 | 15 | 209.85 | 0.99 | | bxy6 | 3.167 | 82 | 47 | 59.75 | 0.94 | | bxy7 | 3.511 | 19 | 6 | 295.40 | 0.99 | | bxy8 | 3.246 | 32 | 21 | 370.22 | 0.99 | | bxy9 | 3.869 | 20 | 8 | 423.64 | 0.99 | | bxy10 | 4.307 | 16 | 6 | 371.42 | 0.98 | | bxy11 | 5.502 | 16 | 11 | 676.14 | 0.99 |
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