Resonant Ultrasound Spectroscopy For Investigation Of Thin Surface Coatings
Free (open access)
237 - 248
H. Seiner, M. R°uˇzek, P. Sedl´ak, L. Bicanov´a & M. Landa
In this paper, we analyze the possibility of determination of all in–plane independent elastic coefficients of an anisotropic surface coating on a known substrate by means of resonant ultrasound spectroscopy (RUS). A novel approach based on perturbation theory is presented, which enables direct determination of the elastic coefficients of the coating from the shift of resonant frequencies induced by the deposition of the layer. The reliability of the proposed concept is investigated by numerical simulations as well as verified by experiments. Keywords: ultrasound spectroscopy, thin coatings, perturbation theory, non-destructive evaluation, in-plane anisotropy.
ultrasound spectroscopy, thin coatings, perturbation theory, non-destructive evaluation, in-plane anisotropy