Resonant Ultrasound Spectroscopy (RUS) is an ultrasound-based minimal-effort high-accuracy elastic modulus measurement technique. RUS as described here uses the mechanical resonances (normal modes of vibration or just modes) of rectangular parallelepiped or cylindrical specimens with a dimension of from a fraction of a millimeter to as large as will fit into the apparatus. Provided here is all that is needed so that the reader can construct and use a state-of-the-art RUS system. Included are links to open-source circuit diagrams, links to download Los Alamos National Laboratory open-source data acquisition software, links to request free analysis software, procedures for acquiring measurements, considerations on building transducers, 3-D printed stage designs, and a full mathematical explanation of how the analysis software extracts elastic moduli from resonances.

中文翻译：

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共振超声光谱：必不可少的工具箱

共振超声光谱 (RUS) 是一种基于超声的最小工作量高精度弹性模量测量技术。此处描述的 RUS 使用长方体或圆柱形试样的机械共振（振动的正常模式或仅模式），其尺寸从几分之一毫米到适合设备的大小。此处提供了所需的全部内容，以便读者可以构建和使用最先进的 RUS 系统。包括开源电路图的链接、下载洛斯阿拉莫斯国家实验室开源数据采集软件的链接、请求免费分析软件的链接、获取测量值的程序、构建传感器的注意事项、3-D 打印舞台设计、