The RUS forward modeling and inversion tools are one of the core technologies of the resonant ultrasound spectroscopy (RUs). The RUS forward modeling tool can calculate resonance frequencies of a rectangular block solid sample based on its geometric dimensions and material parameters. The RUS inversion tool can determine the material parameters of the sample with known dimensions based on its resonance frequencies. The RUS forward modeling and inversion tools are applicable to a variety of common piezoelectric crystals and elastic materials without piezoelectricity. We can customize forward modeling and inversion tools suitable for different materials according to the requirements of users.
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