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  4. An experimental and analytical study of micro-laser line thermography on micro-sized flaws in stitched carbon fiber reinforced polymer composites
 
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2016
Journal Article
Title

An experimental and analytical study of micro-laser line thermography on micro-sized flaws in stitched carbon fiber reinforced polymer composites

Abstract
Stitching is used to reduce incomplete infusion of T-joint core (dry-core) and reinforce T-joint structure. However, it might cause new types of flaws, especially micro-sized flaws. In this paper, a new micro-laser line thermography (micro-LLT) is presented. X-ray micro-computed tomography (micro-CT) was used to validate the infrared results. The micro-LLT and micro-CT inspection are compared. Then, a finite element analysis (FEA) is performed. The geometrical model needed for finite element discretization was developed from micro-CT measurements. The model is validated for the experimental results. Finally a comparison of the experiments and simulation is conducted. The infrared experimental phenomenon and results are explained based on the FEA results.
Author(s)
Zhang, H.
Yu, L.
Hassler, U.
Fernandes, H.
Genest, M.
Robitaille, F.
Joncas, S.
Holub, W.
Sheng, Y.L.
Maldague, X.
Journal
Composites science and technology  
DOI
10.1016/j.compscitech.2016.02.007
Language
English
Fraunhofer-Institut für Integrierte Schaltungen IIS  
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