针对大尺寸弹性材料中声速的测量问题,将传统穿透测量法与分层介质中的射线声学理论相结合,设计了一种在水池中反演测量材料中纵、横波声速的方法.该方法使用水听器接收透过待测材料后到达的高频水声信号,依据实测信号传播时间与理论值比较代价函数,最终利用寻优算法计算材料中的两类声速。本方法既克服了传统方法不能同时获得材料内纵、横波声速的缺点,又可保证待测材料的完整性。利用开发的测量系统,水池实际测量结果的不确定度小于3.5% Aiming at the problem of measuring the velocity of sound in large-size elastic materials, a method of inversely measuring the velocity of longitudinal and transverse waves in a pool by combining the traditional penetration measurement with the ray acoustics theory in layered media is proposed. The hydrophone is used to receive the high-frequency underwater acoustic signals which arrive after the materials to be tested. The cost function is compared with the measured signal propagation time to calculate the two types of sound velocity in the material. The method not only overcomes the shortcoming that the traditional method can not simultaneously obtain the longitudinal velocity and the transverse velocity in the material, but also ensures the integrity of the material to be tested. Utilizing the developed measurement system, the uncertainty of the actual measurement of the pool is less than 3.5%