Detection of Real Flaw using Uniform Eddy Current Multi-probe

• Fukuoka Katsuhiro

  Dept. of Electrical Engineering, Polytechnic University

• Hashimoto Mitsuo

  Dept. of Electrical Engineering, Polytechnic University

Bibliographic Information

Other Title

• マルチ化した一様渦電流プローブによる自然き裂の探傷評価
• マルチカ シタ イチヨウ ウズデンリュウ プローブ ニ ヨル シゼン キレツ ノ タンショウ ヒョウカ

Abstract

The establishment of the nondestructive inspection technology with plant structures has been stimulated by the recent occurrence of cracks in the nuclear power plant structures. In this research, a uniform eddy current multi-probe to apply to the complex structure and inspect the cracks at high-speed data acquisition was developed. Pick-up coils of the developed probe were arranged on a flexible printed circuit board. This probe was able to obtain clear signal for an EDM (electro-discharge machining) slit with 0.5 mm depth and distinguish EDM slits arranged at 2 mm intervals. It was confirmed that the SCC (stress corrosion cracking) of real flaw was able to be detected with developed uniform eddy current multi-probe by using the ferrite core for the exciting coil and considering the impedance matching of the exciting coil and the flaw detection device.

Journal

• IEEJ Transactions on Fundamentals and Materials

  IEEJ Transactions on Fundamentals and Materials 126 (12), 1255-1261, 2006

  The Institute of Electrical Engineers of Japan

Keywords

• eddy current testing (ECT)
• uniform eddy current probe
• stress corrosion cracking (SCC)
• real flaw
• multi-probe

Details

• CRID: 1390001204593482752
• NII Article ID: 10018410821
• NII Book ID: AN10136312
• DOI: 10.1541/ieejfms.126.1255
• ISSN: 13475533
• ISSN: 03854205
• NDL BIB ID: 8592834
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I8592834
• Web Site: http://www.jstage.jst.go.jp/article/ieejfms/126/12/126_12_1255/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed