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Calculation of the acoustic nearfield of vibrating structures from vibration measurements. Applications to sonar arrays

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This paper presents the results of an investigation of two simple techniques that allow prediction of nearfield pressure of a vibrating structure from limited measured vibration data. One method is based on wave decomposition and the other on a variant of the superposition technique. The aim of this work was to develop methods of characterising the effects of mechanical self noise on passive sonars of submarines, but these methods may be applied to many other problems in air and underwater. Experimental validation was performed on a setup consisting of an underwater flank array attached to a structure representing part of a submarine hull. The results of both methods are in good agreement with pressures measured by the individual hydrophones of the array.
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Document Type: Research Article

Publication date: March 1, 1999

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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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