30 September 2016 Comparative study of microlaser excitation thermography and microultrasonic excitation thermography on submillimeter porosity in carbon fiber reinforced polymer composites
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Abstract
Stitching is used to reduce incomplete infusion of T-joint core (dry-core) and reinforce T-joint structure. However, it may cause new types of flaws, especially submillimeter flaws. Thermographic approaches including microvibrothermography, microlaser line thermography, and microlaser spot thermography on the basis of pulsed and lock-in techniques were proposed. These techniques are used to detect the submillimeter porosities in a stitched T-joint carbon fiber reinforced polymer composite specimen. X-ray microcomputed tomography was used to validate the thermographic results. Finally an experimental comparison of microlaser excitation thermography and microultrasonic excitation thermography was conducted.
© 2016 Society of Photo-Optical Instrumentation Engineers (SPIE)
Hai Zhang, Hai Zhang, Henrique C. Fernandes, Henrique C. Fernandes, Ulf Hassler, Ulf Hassler, Clemente Ibarra-Castanedo, Clemente Ibarra-Castanedo, Marc Genest, Marc Genest, François Robitaille, François Robitaille, Simon Joncas, Simon Joncas, Xavier Maldague, Xavier Maldague, } "Comparative study of microlaser excitation thermography and microultrasonic excitation thermography on submillimeter porosity in carbon fiber reinforced polymer composites," Optical Engineering 56(4), 041304 (30 September 2016). https://doi.org/10.1117/1.OE.56.4.041304 . Submission:
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