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Messungen an Oberflächenwellen in festen Körpern

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In the present paper measurements of surface waves in aluminium and steel with frequencies from 1.5 Mc/s to 14 Mc/s are described. A piezoelectric probe was developed for sampling the wave pattern on the surface. The measurements of the propagation of Rayleigh waves in periodic structures made with this device yielded a qualitative agreement of the frequency behaviour of the attenuation and its dependence on the structure parameters with a theory put forward by Brekhovskikh. The amount of the attenuation, however, is found to be about one order of magnitude smaller than the numerical values predicted by Brekhovskikh. Moreover, at the structures a BRAGG reflection was observed accompanied by a dispersion.

Furthermore the transition of Rayleigh waves under thin foils coupled with the surface was investigated. The attenuation effected by the foils showed a frequency behaviour resembling the filter curves of resonant circuits.

Finally by the help of Rayleigh waves measurements of the acoustical contact between rigid bodies as a function of the contact pressure were carried out. At large amplitudes appreciable generation of harmonics was observed.
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Document Type: Research Article

Publication date: January 1, 1965

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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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