Penetration Form of Inter-Hole Cracks under Double-Hole Blasting Conditions with Inclined Fissures

Table 2

Dynamic mechanical parameters of PMMA plates.

Mechanical parameters	(P-wave propagation velocity)	(S-wave propagation velocity)	(modulus of elasticity)	(Poisson ratio)	C (optical parameter)
Numerical value	2320 m/s	1260 m/s	6.1 GN/m^2	0.31	85 μm^2/N