LeHavreV1, France, Analysis, bibRecord, 000B13

Transition term method for the analysis of the reflected and the transmitted acoustic signals from water-saturated porous plates.

Identifieur interne : 000B13 ( France/Analysis ); précédent : 000B12; suivant : 000B14

Transition term method for the analysis of the reflected and the transmitted acoustic signals from water-saturated porous plates.

Auteurs : F. Belhocine [France] ; S. Derible ; H. Franklin

Source :

The Journal of the Acoustical Society of America [ 1520-8524 ] ; 2007.

RBID : pubmed:17927411

English descriptors

KwdEn :
- Acoustics, Mathematics, Models, Theoretical, Pitch Perception, Porosity, Water.
MESH :
- chemical : Water.
- Acoustics, Mathematics, Models, Theoretical, Pitch Perception, Porosity.

Abstract

Ultrasound reflection (R) and transmission (T) from an immersed porous plate of QF-20 (a registered trademark of Filtros, Ferro Corporation) are investigated. Assuming open pores boundary conditions for the theoretical computations, values of the physical constants given by Johnson et al. [D. L. Johnson, D. L. Hemmick, and H. Kojima J. Appl. Phys. 76(1), 115-125 (1994)] are used at first. Comparisons of R and T with experimental results show a discrepancy. It is then assumed that visco-elastic losses exist inside the solid part. When a small imaginary constant part is considered for the bulk moduli, a better fit is obtained between theoretical and experimental values of /R/ and /T/. However, the numerous and very close peaks prevent easy measures of the resonance amplitudes and widths. The transition terms built up from the linear combinations R-T and R+T allow these peaks to be separated. Comparisons between theory and experiments are made. This work validates, in the frequency range where the agreement is good, a method for the location of the symmetrical and antisymmetrical modes of the plate. A discrimination is also possible between modes resulting from the fluid phase motions and from the solid phase motions.

DOI: 10.1121/1.2757090
PubMed: 17927411

Affiliations:

Links to Exploration step

pubmed:17927411

Le document en format XML

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<author><name sortKey="Belhocine, F" sort="Belhocine, F" uniqKey="Belhocine F" first="F" last="Belhocine">F. Belhocine</name>
<affiliation wicri:level="4"><nlm:affiliation>Laboratoire d'Acoustique Ultrasonore et d'Electronique du Havre (LAUE), CNRS UMR 6068, Université du Havre, Place Robert Schuman, 76610 Le Havre, France.</nlm:affiliation>
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<author><name sortKey="Derible, S" sort="Derible, S" uniqKey="Derible S" first="S" last="Derible">S. Derible</name>
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<author><name sortKey="Franklin, H" sort="Franklin, H" uniqKey="Franklin H" first="H" last="Franklin">H. Franklin</name>
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<front><div type="abstract" xml:lang="en">Ultrasound reflection (R) and transmission (T) from an immersed porous plate of QF-20 (a registered trademark of Filtros, Ferro Corporation) are investigated. Assuming open pores boundary conditions for the theoretical computations, values of the physical constants given by Johnson et al. [D. L. Johnson, D. L. Hemmick, and H. Kojima J. Appl. Phys. 76(1), 115-125 (1994)] are used at first. Comparisons of R and T with experimental results show a discrepancy. It is then assumed that visco-elastic losses exist inside the solid part. When a small imaginary constant part is considered for the bulk moduli, a better fit is obtained between theoretical and experimental values of /R/ and /T/. However, the numerous and very close peaks prevent easy measures of the resonance amplitudes and widths. The transition terms built up from the linear combinations R-T and R+T allow these peaks to be separated. Comparisons between theory and experiments are made. This work validates, in the frequency range where the agreement is good, a method for the location of the symmetrical and antisymmetrical modes of the plate. A discrimination is also possible between modes resulting from the fluid phase motions and from the solid phase motions.</div>
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Transition term method for the analysis of the reflected and the transmitted acoustic signals from water-saturated porous plates.

Transition term method for the analysis of the reflected and the transmitted acoustic signals from water-saturated porous plates.

Source :

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri

Pour générer des pages wiki

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