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

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DOIResolve DOI: https://doi.org/10.1117/1.OE.56.4.041304
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Name affiliation
  1. National Research Council Canada. Aerospace
FormatText
TypeArticle
Journal titleOptical Engineering
ISSN0091-3286
1560-2303
Volume56
Issue4
Article number041304
Pages# of pages: 9
Subjectlaser line thermography; laser spot thermography; vibrothermography; x-ray computed tomography; composite
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.
Publication date
PublisherSociety of Photo-optical Instrumentation Engineers
LanguageEnglish
Peer reviewedYes
NPARC number23002402
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Record identifier3e9217c6-0dc9-4105-9349-8201cbba6d0b
Record created2017-10-27
Record modified2020-03-16
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