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

Authors: Zhang, HaiYu, Ling Yao; Hassler, Ulf; Fernandes, HenriqueGenest, MarcRobitaille, François; Joncas, Simon; Holub, Wolfgang; Sheng, YunlongMaldague, X.
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
Document Type: Article de recherche
Issue Date: 1 April 2016
Open Access Date: 1 April 2018
Document version: AM
This document was published in: Composites science and technology, Vol. 126, 17–26 (2016)
Alternative version: 10.1016/j.compscitech.2016.02.007
Collection:Articles publiés dans des revues avec comité de lecture

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