Comparative study of microlaser excitation thermography and microultrasonic excitation thermography on submillimeter porosity in carbon fiber reinforced polymer composites

Hai Zhang; Henrique C. Fernandes; Ulf Hassler; Clemente Ibarra-Castanedo; Marc Genest; François Robitaille; Simon Joncas; Xavier Maldague

doi:10.1117/1.OE.56.4.041304

30 September 2016 Comparative study of microlaser excitation thermography and microultrasonic excitation thermography on submillimeter porosity in carbon fiber reinforced polymer composites

Hai Zhang, Henrique C. Fernandes, Ulf Hassler, Clemente Ibarra-Castanedo, Marc Genest, François Robitaille, Simon Joncas, Xavier Maldague

Author Affiliations +

Optical Engineering, Vol. 56, Issue 4, 041304 (September 2016). https://doi.org/10.1117/1.OE.56.4.041304

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.

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Hai Zhang, Henrique C. Fernandes, Ulf Hassler, Clemente Ibarra-Castanedo, Marc Genest, François Robitaille, Simon Joncas, and 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

Published: 30 September 2016

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