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Resonanzabsorber für Wasserschall

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The resonance absorbers for water-borne sound treated in this paper are smooth rubber sheets, 4 mm thick, which are pasted to steel plates of various thicknesses (ship walls). They contain cylindrical air cavities able to oscillate, the bigger ones of which are sound absorbing resonators. The number of cavities per unit area can be adapted to the thickness of the steel plate in order to attain the highest possible absorption in the desired frequency range.

Reflexion factors below 10%, i.e. absorption factors higher than 99%, have been obtained in the frequency range 9 to 18 kc/s. The design of the absorbers and the physical principles underlying the problem are described in detail. Some aspects of the measuring technique and the technology of rubber are mentioned.
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Document Type: Research Article

Publication date: January 1, 1952

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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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