Table 1.

Mechanical properties of the model materials obtained from experimental measurements.

Material	First Lame Constant, λm (GPa)	Second Lame Constant, µm (GPa)	Density, ρ (kg/m3)	Poisson Ratio, v	P-Wave Velocity, CP (m/s)	R-Wave Velocity, CR (m/s)
Concrete	10.82	15.98	2313	0.202	4300	2311
Steel	124.82	83.59	7850	0.299	6099	3219