Acoustic (0,1) wave transmission through thin rectangular plates
Transmission loss measurements of thin, rectangular aluminium plates employing the (0,1) acoustic mode of a waveguide are described. Theoretical transmission loss formulas are derived for the limiting cases of small and large ratios of frequency to plate thickness. In the case of large ratios, a “mass law” formulation is obtained which exhibits an angular dependence characteristic of the (0,1) mode. Complete sound transmission predicted for angles near grazing is verified by the experimental results for all plates studied. Some discrepancies between theory and experiment for small ratios are discussed and an attempt is made to correct the calculations empirically. The discrepancies between theory and experiment are here attributed to internal plate dissipation and imperfect boundary clamping.
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Document Type: Research Article
Publication date: 01 January 1957
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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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