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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: Students Challenge
ARTICLE

Detection of Unknown Defects in CFRP Using Eddy Current Pulsed Thermography and Microwave NDT

Qiuji Yi14, Adi Mahmud Jaya Marindra1, Junzhen ZHU14, Abdoulaye Ba23
1School of Engineering; University of Newcastle31, Newcastle upon Tyne, United Kingdom
2IREENA-IUT-CRTT7, Saint Nazaire cedex, France

Abstract: Detection of defects in carbon fiber reinforced composite (CFRP) materials with complex geometry has been a challenging task for aerospace industries. Driven by the Student Challenge of NDT-Aerospace 2019, this paper aims to detect and characterize a contaminated bonding and five inclusions with unknown positions in a CFRP specimen by using both eddy current pulsed thermography (ECPT) and microwave NDT. The results from the employed techniques are evaluated and compared in terms of signal to noise ratio and probability of detection. Results show that it is difficult for microwave NDT to identify the man-made debonding or inclusions. For ECPT, one contaminated bonding and four out of five inclusions can be detected with high SNR values.

Keywords: Microwave Imaging (6), induction thermography (20), Pulsed eddy current testing (5),
*Keywords are freely formed keywords from the authors and thus you may Search also for similar terms.

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