Title: Characterization of porous materials with a rigid frame via reflected waves
Authors: Fellah, Zine El Abidine ×
Mitri, FG
Depollier, C
Berger, S
Lauriks, Walter
Chapelon, JY #
Issue Date: Dec-2003
Publisher: Amer inst physics
Series Title: Journal of Applied Physics vol:94 issue:12 pages:7914-7922
Abstract: The inverse problem for waves reflected by porous material is solved at oblique incidence, and an inverse scattering calculation of porosity and tortuosity is given for air-saturated plastic foam samples. The interaction of the sound pulse with the fluid-saturated porous material is described by a time-domain equivalent fluid model. The sensitivity of the porosity and tortuosity is studied and it shows their effect on the reflection coefficient at the first interface. This study shows that porosity is much more sensitive than tortuosity to reflection, especially when the incident angle is less than its critical value, at which the reflection coefficient vanishes. Some advantages and perspectives of this method are discussed. (C) 2003 American Institute of Physics.
ISSN: 0021-8979
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Soft Matter and Biophysics
× corresponding author
# (joint) last author

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