Measuring static thermal permeability and inertial factor of rigid porous materials

Abstract : An acoustic method based on sound transmission is proposed for deducing the static thermal permeability and the inertial factor of porous materials having a rigid frame at low frequencies. The static thermal permeability of porous material is a geometrical parameter equal to the inverse trapping constant of the solid frame [Lafarge et al., J. Acoust. Soc. Am. 102, 1995 (1997)] and is an important characteristic of the porous material. The inertial factor [Norris., J. Wave Mat. Interact. 1, 22 365 (1986)] describes the fluid structure interactions in the low frequency range (1-3 kHz). The proposed method is based on a temporal model of the direct and inverse scattering problems for the propagation of transient audible frequency waves in a homogeneous isotropic slab of porous material having a rigid frame. The static thermal permeability and the inertial factor are determined from the solution of the inverse problem. The minimization between experiment and theory is made in the time domain. Tests are performed using industrial plastic foams. Experimental and theoretical data are in good agreement. Furthermore, the prospects are discussed. This method has the advantage of being simple, rapid, and efficient.
Type de document :
Article dans une revue
Journal of the Acoustical Society of America, Acoustical Society of America, 2011, 130 (5), pp.2627-2630. 〈10.1121/1.3641402〉
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https://hal.archives-ouvertes.fr/hal-00623667
Contributeur : Erick Ogam <>
Soumis le : mercredi 14 septembre 2011 - 17:26:02
Dernière modification le : mardi 17 janvier 2017 - 15:38:16

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M. Sadouki, Mohamed Fellah, Zine El Abiddine Fellah, Erick Ogam, N. Sebaa, et al.. Measuring static thermal permeability and inertial factor of rigid porous materials. Journal of the Acoustical Society of America, Acoustical Society of America, 2011, 130 (5), pp.2627-2630. 〈10.1121/1.3641402〉. 〈hal-00623667〉

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