Reconstruction of non-vanished conductivity crack from ECT signals based on shifting aperture method

N. Yusa, K. Miya

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)


The numerical schemes based on neural networks with a shifting aperture method to reconstruct a crack shape from eddy current test (ECT) signals are presented. Aiming at the final goal of ECT study and the reconstruction of the cracks that occur in the actual steam generator tubes of pressurized water reactor power plants, the cracks considered are not electrodischarge machined notches but the natural ones with distributed conductivity. The data are obtained from numerical simulations using an FEM-BEM coupling method based on the A-φ formulation. A database approach, a kind of fast forward solver, is also applied to save computational resources. The results obtained show that the inverse scheme proposed in this paper can give quite an accurate reconstruction and is robust against noises.

Original languageEnglish
Title of host publicationIECON Proceedings (Industrial Electronics Conference)
PublisherIEEE Computer Society
Number of pages5
Publication statusPublished - 2000 Jan 1
Externally publishedYes

Publication series

NameIECON Proceedings (Industrial Electronics Conference)


  • Eddy current testing
  • crack reconstruction
  • neural network
  • shifting aperture method

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering


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