A comparative study of principal component analysis and independent component analysis in eddy current pulsed thermography data processing

Bai, Libing, Gao, Bin, Tian, Shulin, Cheng, Yuhua, Chen, Yifan, Tian, Gui Yun and Woo, Wai Lok (2013) A comparative study of principal component analysis and independent component analysis in eddy current pulsed thermography data processing. Review of Scientific Instruments, 84 (10). p. 104901. ISSN 0034-6748

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Abstract

Eddy Current Pulsed Thermography (ECPT), an emerging Non-Destructive Testing and Evaluation technique, has been applied for a wide range of materials. The lateral heat diffusion leads to decreasing of temperature contrast between defect and defect-free area. To enhance the flaw contrast, different statistical methods, such as Principal Component Analysis and Independent Component Analysis, have been proposed for thermography image sequences processing in recent years. However, there is lack of direct and detailed independent comparisons in both algorithm implementations. The aim of this article is to compare the two methods and to determine the optimized technique for flaw contrast enhancement in ECPT data. Verification experiments are conducted on artificial and thermal fatigue nature crack detection.

Item Type:	Article
Subjects:	H900 Others in Engineering
Department:	Faculties > Engineering and Environment > Computer and Information Sciences
Depositing User:	Paul Burns
Date Deposited:	02 May 2019 11:13
Last Modified:	10 Oct 2019 19:18
URI:	http://nrl.northumbria.ac.uk/id/eprint/39141

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