Research Article
Dynamic Fracture Experiment of Fractured Rock under Dynamic Loading
Table 6
Crack propagation process of Specimen b2 at the loading rate of 10.6 m/s.
| High-speed images | Crack sketch | Stress (MPa) | Loading time (μs) | Crack propagation process |
| | | 33.155 Prepeak | 51.0 | Microcracks propagating to the lower left part and then to the upper right part occurring from the middle of prefabricated fracture of the specimen | | | 45.27 At peak | 116.3 | Cracks continued to propagate from the middle of fracture to the right direction | | | 32.35 Postpeak | 162.6 | Cracks continued to propagate with increased width |
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