• DocumentCode
    1323377
  • Title

    Fibre optic system for the monitoring of asymmetric Lamb wave modulation in thin films

  • Author

    Dewhurst, R.J. ; Williams, B.A.

  • Author_Institution
    Dept. of Instrum. & Anal. Sci., Univ. of Manchester Inst. of Sci. & Technol., UK
  • Volume
    33
  • Issue
    21
  • fYear
    1997
  • fDate
    10/9/1997 12:00:00 AM
  • Firstpage
    1813
  • Lastpage
    1815
  • Abstract
    For monitoring temporal modulation of a laser-generated asymmetric (a0) Lamb wave, a non-contact fibre optic sensor has been used. Simultaneously, an electromagnetic acoustic transducer (EMAT) sensed in-plane acoustic transients of the symmetric (s0) Lamb wave. Measurements in 75 μm thick aluminium film show that a0 amplitude modulation is associated with a perturbation from the symmetric wave
  • Keywords
    fibre optic sensors; 75 micron; Al; amplitude modulation; asymmetric Lamb wave modulation; electromagnetic acoustic transducer; in-plane acoustic transients; noncontact fibre optic sensor; symmetric wave perturbation; temporal modulation;
  • fLanguage
    English
  • Journal_Title
    Electronics Letters
  • Publisher
    iet
  • ISSN
    0013-5194
  • Type

    jour

  • DOI
    10.1049/el:19971180
  • Filename
    633411
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1323377