Ultrasonic imaging using laser generation and piezoelectric air- coupled detection

WMD Wright, D.A. Hutchins, Gordon Hayward, Anthony Gachagan

Research output: Contribution to journalConference Contribution

10 Citations (Scopus)

Abstract

A non-contact ultrasonic system using a pulsed laser source and a wideband 1-3 connectivity PZT/epoxy composite transducer as a receiver has been used to produce images of defects in a variety of materials. Using both time and frequency information, through transmission images have been formed of delaminations and machined defects in both carbon fibre reinforced polymer (CFRP) and pultruded glass-fibre reinforced composites. Lamb waves have also been used to reconstruct tomographic images using a filtered back projection algorithm, for defects in thin plates of CFRP and Perspex.
Original languageEnglish
Pages (from-to)405-409
Number of pages5
JournalUltrasonics
Volume34
Issue number2-5
DOIs
Publication statusPublished - Jun 1996
EventUltrasonics International 1995 (UI 95) - Edinburgh, United Kingdom
Duration: 5 Jun 19957 Jun 1995

Keywords

  • composites
  • imaging of defects
  • piezoelectric air-coupled transducers
  • ultrasonic imaging
  • laser generation

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