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NDT.net Issue - 2020-02 - Articles
NDT.net Issue: 2020-02
Publication: 11th International Symposium on NDT in Aerospace, Nov 2019, Paris-Saclay, France (AeroNDT 2019)
Session: Components
ARTICLE

Eddy-Current Pulsed Thermography for the Detection of Impact Damage on CFRP

Abdoulaye Ba13, Huu Kien Bui12, Gerard Berthiau14, Qiuji Yi24, Junzhen ZHU24, Gui Yun Tian229
1IREENA-IUT-CRTT7, Saint Nazaire cedex, France
2School of Engineering; University of Newcastle31, Newcastle upon Tyne, United Kingdom

Abstract: Carbon Fiber Reinforced Polymer (CFRP) materials are widely used in aerospace due to their low weight and high strength. Non-destructive Testing (NDT) Techniques become a necessity with increasing use of CFRP materials. Induction Thermography is a new NDT technique that can be exploited as a promising fast and global control. However, the detection of typical flaws in carbon composites such as delamination, fibers rupture and impact damages need to be further investigated in order to optimize the technique. Optimization can be done in the test configuration level and by the use an appropriate image processing technique. In this paper Eddy Current Pulse Compression Thermography (ECPuCT) is used to detect impact damages on CFRP materials. The Principal Component Analysis (PCA) based image processing technique is used to detect and visualize impact damage area from transient thermal images. Flaw detection results using experimental measures will be shown and discussed.


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