Quantitative profile evaluation of natural cracks in a steam generator tube from eddy current signals

Noritaka Yusa, Zhenmao Chen, Kenzo Miya

Research output: Contribution to journalArticlepeer-review

31 Citations (Scopus)


This paper reports the progress of studies in eddy current inversion in the authors' group and a novel inversion scheme that can deal with conductive cracks using eddy current signals. The novel scheme is based on artificial neural networks with its accuracy enhanced by using a shifting aperture method and signal processing techniques. A four sensor type probe is used in the eddy current testing. Several reconstruction results are introduced in this paper as validation of the proposed new scheme. The scheme is also applied to profile reconstruction of cracks which occurred in an actual steam generator tube of a pressurized water nuclear power plant. Remarkable agreement between reconstructed profiles and those obtained by destructive testing is observed. It can be concluded that the new inverse scheme is promising and will be a powerful tool for the practical applications.

Original languageEnglish
Pages (from-to)139-150
Number of pages12
JournalInternational Journal of Applied Electromagnetics and Mechanics
Issue number3-4
Publication statusPublished - 2000 Jan 1
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Electrical and Electronic Engineering


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