Relation Between Coupling and Damping Coefficients of Surface Elastic Waves Propagating Around Cylindrical Targets. Study of Coupling Coefficient Phases
Abstract:This paper deals with the relation between coupling and damping coefficients related to surface elastic waves propagating around cylindrical targets. An analytical expression is established that gives an approximation for the coupling coefficient in relation both with damping coefficients and background phases which are introduced by the factorisation of the Scattering matrix obtained from the Resonance Scattering Theory. It is shown that the approximated relation between coupling and damping coefficients is valid for the rather large damping of surface elastic waves (the limiting value of damping coefficients is found to be equal to 1/). The phase term of coupling coefficient is shown to correspond to the resonant contribution of the background introduced by the use of the Resonance Scattering Theory.
Document Type: Research Article
Publication date: May 1, 1998
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- Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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