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Identification of the acoustic resonances of absorbing cylinders using phase gradient and Argand diagram methods

Identifieur interne : 000F65 ( France/Analysis ); précédent : 000F64; suivant : 000F66

Identification of the acoustic resonances of absorbing cylinders using phase gradient and Argand diagram methods

Auteurs : Hervé Franklin [France] ; Jean-Marc Conoir [France] ; Jean-Louis Izbicki [France]

Source :

RBID : ISTEX:BA4F51E6FCB4F6E76DCEE11356DDE410C75D7590

Abstract

The properties of the acoustic resonances of a submerged absorbing elastic cylinder are investigated with the help of a two-channel scattering resonance formalism. In the elastic channel, different transition terms describing the resonance properties are compared. The scattering phase and its derivative with respect to the frequency are also studied thoroughly. Approximate formulae, involving different resonance widths, are given for the transition terms, the phase and its derivative. Argand diagrams of the transition terms are provided, summarising the characteristic quantities of the absorption phenomenon, i.e. the absorption coefficient, the phase and the resonance widths.

Url:
DOI: 10.1016/S0165-2125(01)00073-7


Affiliations:


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ISTEX:BA4F51E6FCB4F6E76DCEE11356DDE410C75D7590

Le document en format XML

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