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Title: Experimental investigation of the acoustic black hole effect for flexural waves in tapered plates
Authors: Krylov, Victor V.
Winward, Edward
Keywords: Acoustic black hole effect
Flexural waves
Quadratic wedges
Damping of resonant vibrations
Issue Date: 2007
Publisher: © Elsevier
Citation: KRYLOV, V.V. and WINWARD, R.E.T.B., 2007. Experimental investigation of the acoustic black hole effect for flexural waves in tapered plates. Journal of Sound and Vibration, 300 (1-2), pp.43-49.
Abstract: An efficient method of reducing edge reflections of flexural waves in plates or bars based on the 'acoustic black hole effect' has been recently proposed and described theoretically by one of the present authors (V.V.K). The method utilises a gradual change in thickness of a plate or bar, partly covered by thin damping layers, from the value corresponding to the thickness of the basic plate or bar (which is to be damped) to almost zero. The present paper describes the results of the experimental investigation of the damping system consisting of a steel plate of quadratic shape (wedge) covered on one side by a strip of absorbing layer. The results of the measurements of point mobility in such a system show that for a wedge covered by an absorbing layer there is a significant reduction of resonant peaks, in comparison with the uncovered wedge or with the covered plate of constant thickness. Thus, the measurements confirm the existence of the acoustic black hole effect for flexural waves and demonstrate the possibility of its use in practice.
Description: This is the author’s version of a work that was accepted for publication in the Journal of Sound and Vibration. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published at: http://dx.doi.org/10.1016/j.jsv.2006.07.035
Version: Accepted for publication
DOI: 10.1016/j.jsv.2006.07.035
URI: https://dspace.lboro.ac.uk/2134/11847
Publisher Link: http://dx.doi.org/10.1016/j.jsv.2006.07.035
ISSN: 0022-460X
Appears in Collections:Published Articles (Aeronautical and Automotive Engineering)

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