Broadband leaky Lamb waves excited by optical breakdown in water
Name
Athanassiadis_2019_JASA.pdf
Size
2.07 MB
Format
Adobe PDF
Checksum (MD5)
9417cf22ef288f12d1b0445483c47ad5
Author(s)
Athanassiadis, Athanasios G.
Hart, Douglas
Date Issued
August 2019
Journal
Journal of the Acoustical Society of America
Publisher
Acoustical Society of America (ASA)
Citation
Athanassiadisa, Athanasios G. and Douglas P. Hart. "Broadband leaky Lamb waves excited by optical breakdown in water." Journal of the Acoustical Society of America 146, 2 (August 2019): 885–892 © 2019 Acoustical Society of America
Version
Final published version
Abstract
Optical breakdown of water is used as a sound source to excite a broadband set of leaky Lamb waves in submerged aluminum plates. The source is shown to simultaneously excite guided modes spanning 0.1–5 MHz in frequency and 0–0.8 mm−1 in wavenumber. The measured response overlaps well with dispersion curves for Lamb waves in the plates, revealing strong coupling to both symmetric and antisymmetric modes. The strongest responses arise when a mode's phase velocity approximately equals the plate's compressional wave velocity. These results are shown to arise from an interplay of the sensing geometry, guided wave speeds, and signal processing. Finally, implications for non-contact sensing are discussed.
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
http://dx.doi.org/10.1121/1.5120182
