Experimental study on NDT method using electromagnetic waves

Takuya Shibata, Hidetoshi Hashizume, Sumio Kitajima, Kazumasa Ogura

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

The NDT method using electromagnetic waves has strong possibility to detect defects in large structures, or large pipes. The purpose of this study is to control the electromagnetic waves of circular TM01-mode near the cut-off frequency for detecting defects inside the pipes, and to obtain the information in order to develop the device for the defect detection with high speed and high accuracy. The experiment is carried out with mode converter, which can convert the rectangular TE01-mode to circular TM 01-mode microwaves. It is confirmed that the circular TM 01-mode is converted from the rectangular TE01-mode, and is generated inside the circular waveguide on some optimum conditions. It also becomes clear that the reflected wave carries a lot of information on crack width, since the obtained signal of reflected wave depends on the crack width. Experimental results strongly suggest that it is useful to apply electromagnetic waves to NDT technique.

Original languageEnglish
Pages (from-to)348-352
Number of pages5
JournalJournal of Materials Processing Technology
Volume161
Issue number1-2 SPEC. ISS.
DOIs
Publication statusPublished - 2005 Apr 10

Keywords

  • Eddy current testing (ECT)
  • Fission reactor
  • Non-destructive testing (NDT)

ASJC Scopus subject areas

  • Ceramics and Composites
  • Computer Science Applications
  • Metals and Alloys
  • Industrial and Manufacturing Engineering

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