Analysis of Sound Absorption Performance of Underwater Acoustic Coating considering Different Poisson’s Ratio Values

Table 2

Calculated and measured sound absorption coefficient.

		Frequency
	Poisson’s ratio	1000	1250	1600	2000	2500	3150	4000	5000
Calculated	0.496	0.922	0.935	0.942	0.935	0.911	0.866	0.796	0.718
	0.497	0.917	0.939	0.957	0.960	0.946	0.909	0.841	0.756
	0.498	0.889	0.922	0.956	0.978	0.982	0.963	0.908	0.826
	0.499	0.772	0.821	0.879	0.930	0.969	0.996	0.994	0.953
	0.4992	0.720	0.769	0.831	0.888	0.937	0.978	0.997	0.979
	0.4994	0.642	0.692	0.756	0.817	0.874	0.929	0.973	0.985
	0.4995	0.589	0.638	0.701	0.764	0.823	0.884	0.940	0.970
	0.4996	0.524	0.570	0.631	0.692	0.752	0.816	0.883	0.930
	0.4997	0.442	0.483	0.538	0.595	0.651	0.715	0.787	0.847
	0.4998	0.336	0.369	0.414	0.461	0.509	0.564	0.630	0.692
Measured		0.420	0.615	0.815	0.900	0.985	0.955	0.830	0.755