Polymer composite material characterisation using a laser/air-transducer system

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

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

A wide bandwidth 1-3 connectivity piezocomposite air transducer has been used to detect laser-generated ultrasound in a variety of composite materials. Through thickness waveforms in various carbon fibre reinforced polymer (CFRP) composite plates will be presented, as well as a selection of Lamb waves. Signals were also obtained in samples of pultruded glass fibre reinforced composite of different thickness. Using the laser/air-transducer system, images were obtained of machined defects and delaminations by conventional C-scanning methods, and tomographic reconstruction techniques.
Original languageEnglish
Pages (from-to)825-833
Number of pages9
JournalUltrasonics
Volume34
Issue number8
DOIs
Publication statusPublished - Dec 1996

Keywords

  • C-scan imaging
  • lamb wave tomography
  • air-coupled transducer
  • non-contact ultrasound
  • fibre-reinforced composites

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