加压声学覆盖层声学性能测试——声阻抗方法（英文）  

Measuring the Acoustic Properties of Underwater Coating Material under Pressure-Acoustic Impedance Method

作　　者：庞业珍[1] 余晓丽[1] 张晓伟[1] 俞孟萨[1] PANG Ye-zhen YU Xiao-li ZHANG Xiao-wei YU Meng-sa(National Key Laboratory on Ship Vibration ＆ Noise, China Ship Scientific Research Center, Wuxi 214082, China)

机构地区：[1]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

出　　处：《船舶力学》2017年第3期372-381,共10页Journal of Ship Mechanics

基　　金：Supported by the National Key Research and Development Program of China(Grant No.2016YFF0200900)

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。A method to measure the acoustic properties of underwater acoustic coating material under 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 designed, 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 measured to evaluate the absorption and transmission loss of samples, compared with theoretical results,and hence the acoustic impedance method is verified.

关 键 词：声阻抗 吸声系数 隔声量 

分 类 号：TB56[交通运输工程—水声工程]