Multiprobe inspection for enhancing sizing ability in eddy current nondestructive testing

Ladislav Janousek, Klara Capova, Noritaka Yusa, Kenzo Miya

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

Abstract

This paper proposes a unique idea for enhancing sizing ability in eddy current nondestructive testing. A detected crack is inspected using several probes driven at the same exciting frequency but producing different eddy current distributions. Two probes are utilized for the purpose in the paper. The crack signals obtained with the two probes are linearly superposed and a unique value of the ratio of superposition is extracted from the mixed signals. Numerical investigations and experimental verification reveal that the value provides clear indications of the crack's depth. In addition, the depth of a notch five times as deep as the standard depth of penetration was well evaluated using the method.

Original languageEnglish
Article number4526904
Pages (from-to)1618-1621
Number of pages4
JournalIEEE Transactions on Magnetics
Volume44
Issue number6
DOIs
Publication statusPublished - 2008 Jun

Keywords

  • Eddy current testing
  • Multisensor systems
  • Nondestructive testing
  • Signal reconstruction

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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