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Effects of the interface roughness in metal-adhesive-metal structure on the propagation of shear horizontal waves

Abstract : The influence of the interface roughness in a three-layer metal-adhesive-metal structure on the propagation of shear horizontal waves and more particularly on the transmission coefficient versus the frequency is studied in the particular case of a periodic grating of triangular grooves. For given phonon frequencies, the interaction of an incident shear horizontal mode with the periodical grating gives rise to a retro-converted mode. A numerical finite element simulation permits us to predict the existence of the phonon mode in the three-layer structure and to obtain the evolution of the transmission coefficient around the phonon frequency. An experimental study, based on a generation of waves by a piezocomposite contact transducer and a reception by a laser vibrometer, then confirms these predictions. Finally, a parametric numerical study is performed: the influence of the depth of the roughness and of the number of spatial periods of the grooves on the transmission coefficient is studied.
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https://hal-normandie-univ.archives-ouvertes.fr/hal-01919430
Contributor : Francine Luppé <>
Submitted on : Monday, November 12, 2018 - 2:16:55 PM
Last modification on : Wednesday, June 2, 2021 - 3:34:40 AM

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Mounsif Ech Cherif El Kettani, Damien Leduc, Catherine Potel, Michel Bruneau, Ludovic Foze, et al.. Effects of the interface roughness in metal-adhesive-metal structure on the propagation of shear horizontal waves. Journal of the Acoustical Society of America, Acoustical Society of America, 2017, 141 (6), pp.4591 - 4599. ⟨10.1121/1.4985441⟩. ⟨hal-01919430⟩

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