| 加压声学覆盖层声学性能测试—声阻抗方法 |
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| 引用本文： | 庞业珍,余晓丽,张晓伟,俞孟萨.加压声学覆盖层声学性能测试—声阻抗方法[J].船舶力学,2017,21(3). |
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| 作者姓名： | 庞业珍 余晓丽 张晓伟 俞孟萨 |
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| 作者单位： | 中国船舶科学研究中心 船舶振动噪声重点实验室,江苏无锡,214082;中国船舶科学研究中心 船舶振动噪声重点实验室,江苏无锡,214082;中国船舶科学研究中心 船舶振动噪声重点实验室,江苏无锡,214082;中国船舶科学研究中心 船舶振动噪声重点实验室,江苏无锡,214082 |
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| 基金项目： | the National Key Research and Development Program of China |
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| 摘 要： | 文章建立了一种基于声阻抗传递矩阵方法的加压声学覆盖层声学性能测试方法.测量得到的声阻抗矩阵用于计算声学覆盖层吸声系数与隔声量.对声阻抗测试装置包括声管、声源、背衬和水听器布置等进行了详细介绍.通过测量均匀材料样品声阻抗对测试装置进行了验证,通过测试声学覆盖层样品计算吸声系数与隔声量,并与理论计算结果进行对比,对声阻抗方法进行了试验验证.
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| 关 键 词： | 声阻抗 吸声系数 隔声量 |
Measuring the Acoustic Properties of Underwater Coating Material under Pressure-Acoustic Impedance Method |
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| PANG Ye-zhen,YU Xiao-li,ZHANG Xiao-wei,YU Meng-sa.Measuring the Acoustic Properties of Underwater Coating Material under Pressure-Acoustic Impedance Method[J].Journal of Ship Mechanics,2017,21(3). |
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| Authors: | PANG Ye-zhen YU Xiao-li ZHANG Xiao-wei YU Meng-sa |
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| Abstract: | A method to measure the acoustic properties of underwater acoustic coating material un-der pressure based on acoustic impedance matrix is setup. Acoustic impedance matrix is measured to evaluate the absorption and transmission loss of underwater material. The test apparatus are well de-signed, especially for the tube, driver, backing mass and hydrophones. Isotropic material samples are tested to verify the test apparatus. Impedance matrix of acoustic coating material samples is mea-sured to evaluate the absorption and transmission loss of samples, compared with theoretical results, and hence the acoustic impedance method is verified. |
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| Keywords: | acoustic impedance sound absorption coefficients sound transmission loss |
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