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Communication Dans Un Congrès Année : 2005

Modal wave decoherence within a fluid layer with a rough surface

Résumé

The aim of the presentation is to study analytically the propagation of modal waves (like Lamb waves) in a rough fluid plate, in order to interpret the decay of Lamb modes which are observed experimentally and theoretically in solid plates with a rough interface. The analytical method employed here uses modal wave expansion, expressing locally the roughness as an operator acting on the acoustic pressure. The expansion coefficient corresponding to a given modal wave can be expressed as the sum of the direct field when interfaces are rigid plane (without roughness) and of a diffused field created by the mode coupling due to the roughness.
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Dates et versions

hal-00131112 , version 1 (15-02-2007)

Identifiants

  • HAL Id : hal-00131112 , version 1

Citer

Catherine Potel, Michel Bruneau, Bruno Morvan, Jean-Louis Izbicki, Anne-Christine Hladky, et al.. Modal wave decoherence within a fluid layer with a rough surface. Proceedings of the 3rd International Conference of the African Materials Research Society, Dec 2005, Marrakech, Morocco. ⟨hal-00131112⟩
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