Investigation on Multifrequency Eddy Current Testing Signal Analysis for Nondestructive Inspection of Steam Generator Tubes

Abstract:

For inspection of steam generator tubes in nuclear power plants using eddy current testing, it is a very crucial task to extract the flaw signal from signals compounded by flaws and supporting structures. To perform such an important task, the multifrequency eddy current testing method is widely adopted. In this study, we explore the performance of a linear mixing technique based on the discrete cosine transform method by experiments. The results obtained using the DCT based method agree very well to those obtained by commercial software demonstrating the effectiveness of the approach.

• Periodical: Key Engineering Materials (Volumes 321-323)
• Pages: 460-463
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.321-323.460
• Online since: October 2006
• Authors: Hee Jun Jung, Sung Jin Song, Chang Hwan Kim, Joo Young Yoo, Young Hwan Choi, Suk Chull Kang, Myung Ho Song
• Keywords: Discrete Cosine Transform (DCT), Eddy Current Testing (ECT), Frequency Mixing, Multifrequency

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