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

Authors: Zhang, HaiFernandes, Henrique; Hassler, Ulf; Ibarra Castanedo, ClementeGenest, MarcRobitaille, François; Joncas, Simon; Maldague, X.
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
Document Type: Article de recherche
Issue Date: 30 September 2016
Open Access Date: 16 January 2017
Document version: VoR
This document was published in: Optical engineering, , Vol. 56 (4), (2017)
Society of Photo-optical Instrumentation Engineers
Alternative version: 10.1117/1.OE.56.4.041304
Collection:Articles publiés dans des revues avec comité de lecture

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