Investigation of 3D surface acoustic waves in granular media with 3-color digital holography
| Autor: | Guillaume Penelet, Mathieu Leclercq, Vincent Tournat, Pascal Picart |
|---|---|
| Přispěvatelé: | Laboratoire d'Acoustique de l'Université du Mans (LAUM), Centre National de la Recherche Scientifique (CNRS)-Le Mans Université (UM), Ecole Nationale Supérieure d'Ingénieurs du Mans (ENSIM) |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Signal processing
Surface acoustic waves Acoustics Holography Phase (waves) General Physics and Astronomy Granular layer 01 natural sciences Displacement (vector) Acoustic standing waves law.invention 010309 optics Image processing law 0103 physical sciences Wave mechanics Finite-element analysis 010306 general physics Physics Phase contrast microscopy Elastic waves Digital holography Acoustic wave Finite element method [PHYS.MECA.ACOU]Physics [physics]/Mechanics [physics]/Acoustics [physics.class-ph] Amplitude Waveguides |
| Zdroj: | Journal of Applied Physics Journal of Applied Physics, American Institute of Physics, 2017, 121 (4), pp.045112. ⟨10.1063/1.4974950⟩ |
| ISSN: | 0021-8979 1089-7550 |
| Popis: | International audience; This paper reports the implementation of digital color holography to investigate elastic waves propagating along a layer of a granular medium. The holographic setup provides simultaneous recording and measurement of the 3D dynamic displacement at the surface. Full-field measurements of the acoustic amplitude and phase at different excitation frequencies are obtained. It is shown that the experimental data can be used to obtain the dispersion curve of the modes propagating in this granular medium layer. The experimental dispersion curve and that obtained from a finite element modeling of the problem are found to be in good agreement. In addition, full-field images of the interaction of an acoustic wave guided in the granular layer with a buried object are also shown. Published by AIP Publishing. [http://dx. |
| Databáze: | OpenAIRE |
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