Table 4.

Estimated errors ($E_L$ and $E_S$) between the analytical and numerical calculations of the longitudinal and shear intensity transmission coefficients, $I_L$ and $I_S$, for three different incidence angles.

${\mathit{\theta }}_{\mathit{i}}$ (${}^{\circ }$)	${\mathit{I}}_{\mathit{L}\left(\mathit{anl}\right)}$	${\mathit{I}}_{\mathit{S}\left(\mathit{anl}\right)}$	${\mathit{I}}_{\mathit{L}\left(\mathit{num}\right)}$	${\mathit{I}}_{\mathit{S}\left(\mathit{num}\right)}$	${\mathit{E}}_{\mathit{L}}$ (%)	${\mathit{E}}_{\mathit{S}}$ (%)
0	0.414	0.000	0.421	0.000	1.69	0.00
15	0.192	0.026	0.185	0.025	−3.65	−3.85
30	0.133	0.048	0.139	0.046	4.51	−4.17