超声学.材料超声特性的表征方法

[中文适用范围]： 本文件： • 定义了与超声材料表征相关的关键量； • 规定了直接测量许多关键超声材料参数的方法。 本文件适用于所有在非线性声传播不存在的驱动条件下对被动声学材料特性的测量。虽然有些材料特性在非线性驱动状态下可能有研究价值，但这些目前不在本文件的范围内。 [外文原描述]： IEC TS 63081:2019: • defines key quantities relevant to ultrasonic materials characterization; • specifies methods for direct measurement of many key ultrasonic materials parameters. This document is applicable to all measurements of properties of passive acoustic materials under drive conditions that are not subject to nonlinear acoustic propagation. Whilst there are materials properties that may be of interest in a nonlinear drive regime, these are currently outside the scope of this document.