Resonant Ultrasound Spectroscopy: Sensitivity Analysis for Anisotropic Materials with Hexagonal Symmetry

Abstract Resonance ultrasound spectroscopy (RUS) is a non-destructive technique for evaluating elastic and an-elastic material properties. The frequencies of free vibrations carefully crafted sample are measured, properties can be extracted from this. In one popular application, the determination monocrystal elasticity, results not always reliable. some cases, resonant insensitive to changes in certain constants or their linear combinations. Previous work has been done characterize these sensitivity issues materials with isotropic cubic symmetry. This examines constant measurements by RUS method hexagonal symmetry, such as titanium-diboride. We investigate reliability data explore supplemental obtain an accurate complete set constants.