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 |
|---|---|
| Pages (from-to) | 825-833 |
| Number of pages | 9 |
| Journal | Ultrasonics |
| Volume | 34 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - Dec 1996 |
| Externally published | Yes |
Keywords
- Air-coupled transducer
- C-scan imaging
- Fibre-reinforced composites
- Lamb wave tomography
- Non-contact ultrasound
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