Simultaneous determination of porosity, tortuosity, viscous and thermal characteristic lengths of rigid porous materials

Abstract : We present an improved method for the characterization of air-saturated porous materials by simultaneous measurement of porosity, tortuosity, viscous and thermal characteristic lengths via ultrasonic transmission only. The proposed method is based on a temporal model of the direct and inverse scattering problem for the transient ultrasonic waves in a homogeneous isotropic slab of rigid porous material. The advantage of the proposed method is that the four parameters are determined simultaneously using just transmitted experimental wave from a porous material saturated by one gas (air). In addition, no relationship is assumed between the two characteristic lengths.
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Journal of Applied Physics, American Institute of Physics, 2013, 114 (21), pp.204902. <10.1063/1.4833546>
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https://hal.archives-ouvertes.fr/hal-00903319
Contributeur : Zine El Abiddine Fellah <>
Soumis le : mardi 12 novembre 2013 - 20:21:00
Dernière modification le : mardi 17 janvier 2017 - 15:38:25
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Zine El Abiddine Fellah, Mustapha Sadouki, Mohamed Fellah, F. G. Mitri, Erick Ogam, et al.. Simultaneous determination of porosity, tortuosity, viscous and thermal characteristic lengths of rigid porous materials. Journal of Applied Physics, American Institute of Physics, 2013, 114 (21), pp.204902. <10.1063/1.4833546>. <hal-00903319>

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