Abstract
Surface-bonded single-mode optical fibre sensors have been used to monitor the interaction of ultrasonic S-0 lamb waves with defects in carbon iibre composite plates. Lamb waves were initiated using Perspex-coupled piezoelectric transducers. The defects investigated comprised holes, regions of impact damage and delaminations. Holes could be identified by analysing direct S-0 reflections and impact damage by S-0 back-waif echo amplitude. Large delaminations gave a poor direct S-0 reflection. Evidence was found for mode conversion at centre plane delaminations.
Original language | English |
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Pages (from-to) | 776-787 |
Number of pages | 12 |
Journal | Smart Materials and Structures |
Volume | 5 |
Issue number | 6 |
DOIs | |
Publication status | Published - Dec 1996 |
Keywords
- fiber
- ultrasonic Lamb waves
- surface-bonded
- optical fibre sensors
- inspection
- CFRP plates