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Bonding Characterization of a Three-Layer Metal-Adhesive-Metal Using Shear Horizontal Modes of Close Dispersion Curves

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This work presents numerical and experimental results on the evaluation of the quality of bonding in a metal-adhesive-metal three-layer structure using shear horizontal (SH) guided waves. The studied samples have different levels of adhesion. A numerical finite element simulation based on the Jones model permits to predict the dispersion curves in the different cases. An experimental study, based on a generation of waves by an EMAT transducer and a reception by a piezocomposite transducer, is performed. Results show that a criterion on the quality of the bonding can be found when the quality of the adhesive is degraded by addition of grease in the adhesive, based on the simultaneous propagation, or not, of two close wavenumber-frequency modes of the three-layer.
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Document Type: Research Article

Publication date: 01 November 2017

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  • Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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