Advanced probe with array of pick-up coils for improved crack evaluation in eddy-current non-destructive testing

Ladislav Janousek, Klara Capova, Noritaka Yusa, Kenzo Miya

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

Abstract

The paper proposes a new probe for enhancing crack evaluation in eddy-current non-destructive testing. The probe consists of one exciting coil and two identical pick-up coils. The pick-up coils are situated at different locations relative to the position of the exciting coil for gaining signals using various depth profiles of eddy current density. The two signals are linearly superposed and a certain indication of crack's depth is extracted from the resulting signal. Numerical as well as experimental results demonstrate the effectiveness of the new probe in the evaluation of a crack's depth. In addition, cracks much deeper than the standard depth of penetration can be evaluated using the new probe.

Original languageEnglish
Title of host publicationElectromagnetic Nondestructive Evaluation (XI)
EditorsAntonello Tamburrino, Yevgen Melikhov, Zhenmao Chen, Lalita Udpa
Pages271-275
Number of pages5
DOIs
Publication statusPublished - 2008 Dec 1
Externally publishedYes

Publication series

NameStudies in Applied Electromagnetics and Mechanics
Volume31
ISSN (Print)1383-7281
ISSN (Electronic)1879-8322

Keywords

  • Non-destructive testing
  • crack's depth evaluation
  • eddy-currents
  • pick-up coil array
  • signal superposition

ASJC Scopus subject areas

  • Mechanical Engineering
  • Electrical and Electronic Engineering

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