Article Dans Une Revue Journal of the Acoustical Society of America Année : 2021

Laser ultrasonics in a multilayer structure: Semi-analytic model and simulated examples

M. Ducousso
N. Cuvillier

Résumé

Laser-generated elastic waves have been the subject of numerous experimental, theoretical, and numerical studies to describe the opto-acoustic generation process, involving electromagnetic, thermal, and elastic fields and their couplings in matter. Among the numerical methods for solving this multiphysical problem, the semi-analytic approach is one of the most relevant for obtaining fast and accurate results, when analytic solutions exist. In this paper, a multilayer model is proposed to successively solve electromagnetic, thermal, and elastodynamic problems. The optical penetration of the laser line source, as well as thermal conduction and convection, are accounted for. Optical, thermal, and mechanical coupling conditions are considered between the upper and lower media of the multilayer. The simulation of laser-generated ultrasounds in multilayer structures is of interest for the development of nondestructive evaluation methods of complex structures, such as bonded assemblies in aeronautics [as discussed in Hodé et al., J. Acoust. Soc. Am. 150, 2076 (2021)]. The developed Python code is provided for free at https://doi.org/10.5281/zenodo.4301720.

Fichier non déposé

Dates et versions

hal-03752626 , version 1 (17-08-2022)

Identifiants

Citer

R. Hodé, M. Ducousso, N. Cuvillier, V. Gusev, V. Tournat, et al.. Laser ultrasonics in a multilayer structure: Semi-analytic model and simulated examples. Journal of the Acoustical Society of America, 2021, 150 (3), pp.2065-2075. ⟨10.1121/10.0005974⟩. ⟨hal-03752626⟩
104 Consultations
0 Téléchargements

Altmetric

Partager

  • More