Difference in the detection limits of flaws in the depths of multi-layered and continuous aluminum plates using low-frequency eddy current testing

Hironobu Yamada, Teruki Hasegawa, Yudai Ishihara, Toshihiko Kiwa, Keiji Tsukada

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

We examined the difference in the detection limits of flaws in the depths of multi-layered and continuous aluminum plates using low-frequency eddy current testing. The detection limits were measured by using a magneto-resistive sensor. Comparing the frequency of an applied magnetic field, the detection limit at 50 Hz is deeper than that at 1 kHz. Comparing the sample structure, the detection limit in the multi-layered samples is deeper than that in the continuous samples. These results are likely due to the differences in the skin depth and conductivity of the sample.

Original languageEnglish
Pages (from-to)108-111
Number of pages4
JournalNDT and E International
Volume41
Issue number2
DOIs
Publication statusPublished - Mar 1 2008

Keywords

  • Eddy current testing
  • Low-frequency magnetic field
  • Magneto-resistive sensor
  • Non-destructive testing

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

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