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Bounded Beam Interaction with Plate-Edge at Lamb Angle

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There are many papers dealing with the scattering of Lamb waves at the edges of free and immersed plates. Nevertheless, since such Lamb waves are often generated by means of bounded beams, here, a study is revealed, based on Schlieren photography, of the interaction of a bounded beam, incident near the edge of a plate at the Lamb angle. The study shows that retro reflection occurs of the generated Lamb waves and that more complicated mode conversion takes place whenever the border of the beam reaches the edge of the plate. The difference is shown between scattering of the A1 and the S1 Lamb mode. Furthermore, it is shown that Lamb waves excite a radiating acoustic multipole when encountering the edge of the plate.
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Document Type: Research Article

Publication date: 01 March 2005

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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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