The effect of laser wavelength on the efficiency of laser-generated ultrasound for the inspection of CFRCs

T Stratoudaki; C Edwards; S Dixon; S B Palmer

doi:10.1784/insi.45.3.186.53157

The effect of laser wavelength on the efficiency of laser-generated ultrasound for the inspection of CFRCs

T Stratoudaki, C Edwards, S Dixon, S B Palmer

Research output: Contribution to journal › Article

Abstract

The aim of the present work is to obtain a further understanding of the laser generation of ultrasound in carbon fibre-reinforced composites (CFRCs) for non-destructive testing. Three different laser wavelengths have been used for the ultrasonic generation: 10.6 μm (TEA CO₂), 1.064 μm (Nd:YAG) and 308 nm (XeCl excimer). The ultrasonic generation mechanism in materials such as CFRCs is determined by the optical absorption depth of the superficial resin layer and the underlying layers of carbon fibres, which is mutually dependent on the material characteristics and laser wavelength. Comparative results of generation efficiency between the three wavelengths used are presented and the role that the resin matrix plays is evaluated.

Original language	English
Pages (from-to)	186-189
Number of pages	4
Journal	Insight: The Journal of the British Institute of Non-Destructive Testing
Volume	45
Issue number	3
DOIs	https://doi.org/10.1784/insi.45.3.186.53157
Publication status	Published - 1 Mar 2003
Externally published	Yes

Keywords

carbon fibre-reinforced composites (CFRCs)
non-destructive testing
ultrasound
resin matrix
laser wavelength

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Stratoudaki, T., Edwards, C., Dixon, S., & Palmer, S. B. (2003). The effect of laser wavelength on the efficiency of laser-generated ultrasound for the inspection of CFRCs. Insight: The Journal of the British Institute of Non-Destructive Testing, 45(3), 186-189. https://doi.org/10.1784/insi.45.3.186.53157

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