ECH CHERIF EL KETTANI, Mounsif; LEDUC, Damien; POTEL, Catherine; BRUNEAU, Michel; FOZE, Ludovic; PREDOI, Mihai

doi:10.1121/1.4985441

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ECH CHERIF EL KETTANI, Mounsif
Laboratoire Ondes et Milieux Complexes [LOMC]

LEDUC, Damien
Laboratoire Ondes et Milieux Complexes [LOMC]

POTEL, Catherine
Laboratoire d'Acoustique de l'Université du Mans [LAUM]

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Article de revue

Ce document a été publié dans

Journal of the Acoustical Society of America. 2017-06, vol. 141, n° 6, p. 4591 - 4599

Acoustical Society of America

Résumé en anglais

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.< Réduire

Mots clés en anglais

Vibrometer

Solid solid interfaces

Optical phase matching

Computer simulation

Wave propagation

Finite-element analysis

Phonons

Numerical methods

Signal processing

Polymers

DOI

http://dx.doi.org/10.1121/1.4985441

Project ANR

Innovating for Structural Adhesive Bonding Evaluation and Analysis with Ultrasounds - ANR-12-BS09-0022

Origine

Importé de hal

Unités de recherche

D2IA : Dynamiques, Interactions, Interculturalités Asiatiques - UMRU 24140