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Communication Dans Un Congrès Année : 2012

Ultrasonic investigation on water-saturated porous scatterers under different boundary conditions

Résumé

The goal of the following studies is to inverse the Biot parameters of some manufactured water-saturated porous material (plate or cylinder) under the different cases of boundary conditions presented below. Porous plate with open and sealed pore condition: the normal reflection and transmission coefficients of a given open pore plate are measured. They are compared with the coefficients obtained when the pores of the faces of the plate are sealed with thin quick setting cement. The backscattering coefficient of a porous cylinder is measured. The superficial pores are sealed whether with a thin Teflon® tape or with quick setting cement. In the first case the cylinder behaves like a “soft” cylinder. Porous plate with different boundary conditions on its faces: the normal reflected signal onto an open pore plate is recorded when the plate is completely immersed in water and when its upper face is in the air. These two experiments allow us to separate the fast and slow echoes on the signals.

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Dates et versions

hal-00810825 , version 1 (23-04-2012)

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  • HAL Id : hal-00810825 , version 1

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Serge Derible, Hervé Franklin. Ultrasonic investigation on water-saturated porous scatterers under different boundary conditions. Acoustics 2012, Apr 2012, Nantes, France. ⟨hal-00810825⟩
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