Application of eddy current inversion technique to the sizing of defects in Inconel welds with rough surfaces

Noritaka Yusa, Eiji MacHida, Ladislav Janousek, Mihai Rebican, Zhenmao Chen, Kenzo Miya

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

This paper evaluates the applicability of eddy current inversion techniques to the sizing of defects in Inconel welds with rough surfaces. For this purpose, a plate Inconel weld specimen, which models the welding of a stub tube in a boiling water nuclear reactor is fabricated, and artificial notches machined into the specimen. Eddy current inspections using six different eddy current probes are conducted and efficiencies were evaluated for the six probes for weld inspection. It is revealed that if suitable probes are applied, an Inconel weld does not cause large noise levels during eddy current inspections even though the surface of the weld is rough. Finally, reconstruction of the notches is performed using eddy current signals measured using the uniform eddy current probe that showed the best results among the six probes in this study. A simplified configuration is proposed in order to consider the complicated configuration of the welded specimen in numerical simulations. While reconstructed profiles of the notches are slightly larger than the true profiles, quite good agreements are obtained in spite of the simple approximation of the configuration, which reveals that eddy current testing would be an efficient non-destructive testing method for the sizing of defects in Inconel welds.

Original languageEnglish
Pages (from-to)1469-1480
Number of pages12
JournalNuclear Engineering and Design
Volume235
Issue number14
DOIs
Publication statusPublished - 2005 Jun 1
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering
  • Materials Science(all)
  • Safety, Risk, Reliability and Quality
  • Waste Management and Disposal
  • Mechanical Engineering

Fingerprint Dive into the research topics of 'Application of eddy current inversion technique to the sizing of defects in Inconel welds with rough surfaces'. Together they form a unique fingerprint.

  • Cite this