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Article Dans Une Revue Journal of the Acoustical Society of America Année : 2008

Modeling a surface-mounted Lamb wave emission-reception system : applications to structural health monitoring

Résumé

The work described in this paper is intended to present a simple and efficient way of modeling a full Lamb wave emission and reception system. The emitter behavior and the Lamb wave generation are predicted using a two-dimensional (2D) hybrid finite element–normal mode expansion model. Then the receiver electrical response is obtained from a finite element computation with prescribed displacements. A numerical correction is applied to the 2D results in order to account for the in-plane radiation divergence caused by the finite length of the emitter. The advantage of this modular approach is that realistic configurations can be simulated without performing cumbersome modeling and time-consuming computations. It also provides insight into the physical interpretation of the results. A good agreement is obtained between predicted and measured signals. The range of application of the method is discussed

Dates et versions

hal-00360098 , version 1 (10-02-2009)

Identifiants

Citer

Emmanuel Moulin, Sébastien Grondel, Jamal Assaad, Laurent Duquenne. Modeling a surface-mounted Lamb wave emission-reception system : applications to structural health monitoring. Journal of the Acoustical Society of America, 2008, 124, pp.3521-3527. ⟨10.1121/1.2996337⟩. ⟨hal-00360098⟩
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