Acoustic attenuation coefficients for polycrystalline materials containing crystallites of any symmetry class

Authors

Christopher M. Kube, University of Nebraska-LincolnFollow
Joesph A. Turner, University of Nebraska-LincolnFollow

Date of this Version

2015

Citation

Journal of Acoustical Society of America 137 (6),June 2015

Abstract

This letter provides a theoretical extension to the elastic properties of polycrystals in order to describe elastic wave scattering from grain boundaries. The extension allows the longitudinal and shear attenuation coefficients for scattering to be derived and is valid for polycrystals containing crystallites of any symmetry class. Attenuation curves are given for polycrystalline SiO₂, ZrO₂, and SnF₂, which contain monoclinic crystallites. This work will allow ultrasonic techniques to be applied to new classes of materials containing nontrivial microstructures.