Effects of the interface roughness in metal-adhesive-metal structure on the propagation of shear horizontal waves
Language
en
Article de revue
This item was published in
Journal of the Acoustical Society of America. 2017-06, vol. 141, n° 6, p. 4591 - 4599
Acoustical Society of America
English 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 ...Read more >
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.Read less <
English Keywords
Vibrometer
Solid solid interfaces
Optical phase matching
Computer simulation
Wave propagation
Finite-element analysis
Phonons
Numerical methods
Signal processing
Polymers
ANR Project
Innovating for Structural Adhesive Bonding Evaluation and Analysis with Ultrasounds - ANR-12-BS09-0022
Origin
Hal imported