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Lamb mode reflections at the end of a plate loaded by a viscoelastic material
N Wilkie-Chancellier1, L Martinez, S Serfaty
1Equipe Circuits Instrumentation et Modélisation en Electronique, Université de Cergy, Neuville sur Oise 95031, Cergy Pontoise Cedex, France. Nicolas.Wilkie-Chancellier@iutc.u-cergy.fr <Nicolas.Wilkie-Chancellier@iutc.u-cergy.fr>
Abstract:
This paper deals with a study of the conversion of a Lamb wave at the loaded edge of a plate. An experimental study is performed to know the interaction of surface waves with a viscoelastic material. A Lamb wave is generated by a wedge. At the end of the plate, this wave gives rise to several reflected waves. A first study makes it possible qualitatively to know the Lamb modes present in reflection. Secondly, conversion phenomena are studied to know if surface waves are sensitive to evolution in the time of the viscoelastic material structure. The selected material is a sol-gel containing silica.
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