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Title: Generation of flexural waves in plates by laser-initiated airborne shock waves
Authors: Georgiev, Vasil B.
Krylov, Victor V.
Qin, Qin
Attenborough, Keith
Keywords: Flexural waves in plates
Wave generation
Laser-initiated airborne shock waves
Semi-analytical approach
Issue Date: 2011
Publisher: © Elsevier
Citation: GEORGIEV, V.B. ... et al, 2011. Generation of flexural waves in plates by laser-initiated airborne shock waves. Journal of Sound and Vibration, 330 (2), pp.217-228.
Abstract: Results of the semi-analytical modelling of the interaction of laser-initiated airborne shock waves with an infinite horizontally positioned elastic plate are presented. The impact of the airborne shock waves on the plate is approximated by a cylindrically diverging surface force resulting from the pressure of the incident and reflected shock waves. This force is then represented in the wavenumber-frequency domain by means of Hankel and Fourier transforms that are carried out numerically so that the interaction problem can be solved using the Green’s function method. The resulting frequency spectra and time histories of generated 2 flexural wave pulses are calculated for different values of laser pulse energy and for different heights of the laser beam focusing above the plate surface. The theoretical results obtained are compared with the results of laboratory measurements of the interaction of laser-generated acoustic shocks with a large plastic plate. The comparison shows reasonably good agreement between the semi-analytical predictions and data.
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.2010.08.005
Version: Accepted for publication
DOI: 10.1016/j.jsv.2010.08.005
URI: https://dspace.lboro.ac.uk/2134/10785
Publisher Link: http://dx.doi.org/10.1016/j.jsv.2010.08.005
ISSN: 0022-460X
Appears in Collections:Published Articles (Aeronautical and Automotive Engineering)

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