Non contact material evaluation for characterisation and wear detection using laser generated ultrasound and interferometric detection

G.J. Thursby, B. Culshaw, B.L. Sorazu, S.H. Atique, F. Dong

Research output: Contribution to conferencePaper


This paper describes an all optical non-contact technique to determine material properties in a mechanical structure. Using optical generation of ultrasound and interferometric optical detection to determine the dispersion curves for acoustic (Lamb) waves, readily available numerical algorithms have produced values of Young's Modulus and Poisson ratio with confidence limits of a few per cent. The approach may be applied to inspection regions with dimension in the range microns to centimetres.
Original languageEnglish
Number of pages9
Publication statusPublished - Mar 2004
EventSPIE Conference on Smart Structures and Materials 2004 - San Diego, United States
Duration: 15 Mar 200418 Mar 2004


ConferenceSPIE Conference on Smart Structures and Materials 2004
CountryUnited States
CitySan Diego


  • non-contact material
  • evaluation
  • characterisation
  • wear detection
  • laser generated ultrasound
  • interferometric detection

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