【摘要】 本文介绍了换能器背衬复合材料声阻抗和声传播衰减的估算方法,并给出环氧树脂加铅粉,可(?)延金属(如铝、铜、铅、锡)加钨粉等复合材料在不同钨粉浓度时声阻抗的具体数值。本文也介绍了钨-乙烯塑料复合材料声纵波速度和声阻抗随钨粉浓度变化的实验资料。更多还原

【Abstract】 Evaluation of the acoustic impedance and attenuation of the backing composite and numericalcalculation of the acoustic impedance of some composites with different concentration of tungstenparticles are described.Some experimental results of longitudinal wave velocity and impedance fortungsten-vinyl composite are introduced.更多还原