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National Primary Standard for the Units of the Propagation Velocities and Damping Coefficient of Ultrasonic Waves in Solids Get 189-2014

机译:固体中超声波传播速度和阻尼系数单位的国家主要标准获得189-2014

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摘要

Improvements in the National Primary Standard for the Units of the Propagation Velocities of Longitudinal, Shear, and Surface Ultrasonic Waves in Solids are discussed. A new standard apparatus for reproduction of the unit of the damping coefficient for longitudinal ultrasonic waves is described. It is based on contactless capacitive methods for generating ultrasonic waves and pulse-echo and resonance measurement techniques for receiving them. The metrological characteristics of the National Primary Standard for the Units of the Propagation Velocities and Damping Coefficient of Ultrasonic Waves in Solids, GET 189-2014, are given.
机译:讨论了国家基本标准对固体中纵向,剪切和表面超声波传播速度的改进。描述了一种用于再现纵向超声波的阻尼系数的单位的新标准设备。它基于用于产生超声波的非接触电容方法和用于接收超声波的脉冲回波以及共振测量技术。给出了《美国固体中超声波传播速度和阻尼系数单位》的计量学特征,GET 189-2014。

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