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 language | English |
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Pages (from-to) | 825-833 |
Number of pages | 9 |
Journal | Ultrasonics |
Volume | 34 |
Issue number | 8 |
DOIs | |
Publication status | Published - Dec 1996 |
Keywords
- C-scan imaging
- lamb wave tomography
- air-coupled transducer
- non-contact ultrasound
- fibre-reinforced composites