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Structural Energy Flow in a Resiliently Coupled T-shaped Beam by Wave Intensity and Mobility Approaches

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The aim of this work is to examine the limitations and possibilities of application for two different experimental techniques employed to measure the energy flow through a T-shaped beam containing a resilient junction. The methods considered are the structural wave intensity technique based on a finite-difference (FD) approximation and the Mobility Energy Flow (MEF) technique. Two resiliently coupled beams, forming a T-shape, are utilized for experimental evaluation of both methods. Reverberant and anechoically terminated ends of the receiving beam are used in order to examine conditions of weak and strong energy flow. Both measurement methods are compared with theoretical predictions of the input power in the source structure and the power transferred through the resilient material to the receiver structure. It was found that the MEF method demonstrates a number of advantages in contrast to the FD technique.
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Document Type: Research Article

Publication date: September 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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