Investigation of interfacial stiffnesses of a tri-layer using Zero-Group Velocity Lamb modes
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- Sylvain Mezil
- PSL Research University ESPCI Paris Tech, , CNRS, Institut Langevin, 1 rue Jussieu, F-75005, Paris, France
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- Francois Bruno
- PSL Research University ESPCI Paris Tech, , CNRS, Institut Langevin, 1 rue Jussieu, F-75005, Paris, France
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- Samuel Raetz
- PSL Research University ESPCI Paris Tech, , CNRS, Institut Langevin, 1 rue Jussieu, F-75005, Paris, France
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- Jérôme Laurent
- PSL Research University ESPCI Paris Tech, , CNRS, Institut Langevin, 1 rue Jussieu, F-75005, Paris, France
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- Daniel Royer
- PSL Research University ESPCI Paris Tech, , CNRS, Institut Langevin, 1 rue Jussieu, F-75005, Paris, France
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- Claire Prada
- PSL Research University ESPCI Paris Tech, , CNRS, Institut Langevin, 1 rue Jussieu, F-75005, Paris, France
書誌事項
- 公開日
- 2015-11-01
- DOI
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- 10.1121/1.4934958
- 公開者
- Acoustical Society of America (ASA)
この論文をさがす
説明
<jats:p>Zero-Group Velocity (ZGV) Lamb waves are studied in a structure composed of two plates bonded by an adhesive layer. The dispersion curves are calculated for a Duralumin/epoxy/Duralumin sample, where the adhesion is modeled by a normal and a tangential spring at both interfaces. Several ZGV modes are identified and their frequency dependence on interfacial stiffnesses and on the bonding layer thickness is numerically studied. Then, experiments achieved with laser ultrasonic techniques are presented. Local resonances are measured using a superimposed source and probe. Knowing the thicknesses and elastic constants of the Duralumin and epoxy layers, the comparison between theoretical and experimental ZGV resonances leads to an evaluation of the interfacial stiffnesses. A good agreement with theoretical dispersion curves confirms the identification of the resonances and the parameter estimations. This non-contact technique is promising for the local evaluation of bonded structures.</jats:p>
収録刊行物
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- The Journal of the Acoustical Society of America
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The Journal of the Acoustical Society of America 138 (5), 3202-3209, 2015-11-01
Acoustical Society of America (ASA)
