Laser-Ultrasonic Characterization of Strongly Anisotropic Materials by Transient Grating Spectroscopy

0543930 - ÚT 2022 RIV US eng J - Journal Article
Stoklasová, Pavla - Grabec, Tomáš - Zoubková, K. - Sedlák, Petr - Krátký, Stanislav - Seiner, Hanuš
Laser-Ultrasonic Characterization of Strongly Anisotropic Materials by Transient Grating Spectroscopy.
Experimental Mechanics. Roč. 61, č. 4 (2021), s. 663-676. ISSN 0014-4851. E-ISSN 1741-2765
R&D Projects: GA ČR(CZ) GA20-12624S; GA MŠMT EF16_013/0001794
Institutional support: RVO:61388998 ; RVO:61389005 ; RVO:68081731
Keywords : laser-ultrasonics * transient grating spectroscopy * elastic anisotropy * surface acoustic waves
OECD category: Acoustics; Materials engineering (UJF-V); Coating and films (UPT-D)
Impact factor: 2.794, year: 2021
Method of publishing: Limited access
https://link.springer.com/article/10.1007/s11340-021-00698-6

Transient grating spectroscopy (TGS) is tested on a set of single crystals with an anisotropy factor up to A = 25. Using a numerical simulation based on a Ritz-Rayleigh approach, we show that strong anisotropy may lead to significant coupling of SAWs with bulk shear waves, which complicates TGS measurements in specific directions. Based on the obtained TGS data, we discuss the possibility of also using the TGS technique for assessing the longitudinal elastic coefficient.
Permanent Link: http://hdl.handle.net/11104/0321372