Carbon fiber composites inspection and defect characterization using active infrared thermography : numerical simulation and experimental results

Authors: Fernandes, HenriqueZhang, Hai; Figueiredo, Alisson; Ibarra Castanedo, Clemente; Guimarares, Gilmar; Maldague, X.
Abstract: Composite materials are widely used in the aeronautic industry. One of the reasons is because they have strength and stiffness comparable to metals, with the added advantage of significant weight reduction. Infrared thermography (IT) is a safe nondestructive testing technique that has a fast inspection rate. In active IT, an external heat source is used to stimulate the material being inspected in order to generate a thermal contrast between the feature of interest and the background. In this paper, carbon-fiber-reinforced polymers are inspected using IT. More specifically, carbon/PEEK (polyether ether ketone) laminates with square Kapton inserts of different sizes and at different depths are tested with three different IT techniques: pulsed thermography, vibrothermography, and line scan thermography. The finite element method is used to simulate the pulsed thermography experiment. Numerical results displayed a very good agreement with experimental results.
Document Type: Article de recherche
Issue Date: 23 September 2016
Open Access Date: 17 January 2017
Document version: AM
Permalink: http://hdl.handle.net/20.500.11794/13133
This document was published in: Applied optics, Vol. 55 (34), D46-D53 (2016)
https://doi.org/10.1364/AO.55.000D46
Optical Society of America
Alternative version: 10.1364/AO.55.000D46
27958438
Collection:Articles publiés dans des revues avec comité de lecture

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