Research Article
Effect of Pre-Existing Symmetrical Cracks on Propagation Behaviors of a Blast-Induced Crack
Table 1
Dynamic parameters of PMMA and sandstone.
| | Classification | P-wave speed cp (m/s) | S-wave speed cs (m/s) | Elastic modulus Ed (GPa) | Poisson’s ratio μd | Density ρ (Kg/m3) |
| | Sandstone | 2430 | 1450 | 12.19 | 0.22 | 2370 | | PMMA | 2160 | 1260 | 4.65 | 0.24 | 1180 |
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