JPH0441300B2 - - Google Patents

Info

Publication number
JPH0441300B2
JPH0441300B2 JP57219074A JP21907482A JPH0441300B2 JP H0441300 B2 JPH0441300 B2 JP H0441300B2 JP 57219074 A JP57219074 A JP 57219074A JP 21907482 A JP21907482 A JP 21907482A JP H0441300 B2 JPH0441300 B2 JP H0441300B2
Authority
JP
Japan
Prior art keywords
section
excitation
output signal
detection
frequencies
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP57219074A
Other languages
English (en)
Japanese (ja)
Other versions
JPS59108955A (ja
Inventor
Shinichiro Kimura
Seiichi Watanabe
Isamu Ichijima
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Steel Corp
Original Assignee
Nippon Steel Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP57219074A priority Critical patent/JPS59108955A/ja
Publication of JPS59108955A publication Critical patent/JPS59108955A/ja
Publication of JPH0441300B2 publication Critical patent/JPH0441300B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
    • G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
    • G01N27/90—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents
    • G01N27/904—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents with two or more sensors

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
JP57219074A 1982-12-13 1982-12-13 マルチプロ−ブコイルマルチ周波数渦流探傷装置 Granted JPS59108955A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57219074A JPS59108955A (ja) 1982-12-13 1982-12-13 マルチプロ−ブコイルマルチ周波数渦流探傷装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57219074A JPS59108955A (ja) 1982-12-13 1982-12-13 マルチプロ−ブコイルマルチ周波数渦流探傷装置

Publications (2)

Publication Number Publication Date
JPS59108955A JPS59108955A (ja) 1984-06-23
JPH0441300B2 true JPH0441300B2 (enrdf_load_stackoverflow) 1992-07-07

Family

ID=16729849

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57219074A Granted JPS59108955A (ja) 1982-12-13 1982-12-13 マルチプロ−ブコイルマルチ周波数渦流探傷装置

Country Status (1)

Country Link
JP (1) JPS59108955A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000131287A (ja) * 1998-10-23 2000-05-12 Japan Science & Technology Corp 磁気計測による探傷方法及び装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7206706B2 (en) 2005-03-09 2007-04-17 General Electric Company Inspection method and system using multifrequency phase analysis
US7518359B2 (en) * 2005-03-09 2009-04-14 General Electric Company Inspection of non-planar parts using multifrequency eddy current with phase analysis

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5554446A (en) * 1978-06-15 1980-04-21 Nippon Steel Corp Signal processing method of eddy-current check unit
JPS5611351A (en) * 1979-07-10 1981-02-04 Hara Denshi Sokki Kk Time division-type multifrequency eddy current
JPS56119845A (en) * 1980-02-26 1981-09-19 Mitsubishi Heavy Ind Ltd Multifrequency eddy current defectoscope
US4467281A (en) * 1980-02-29 1984-08-21 Electric Power Research Institute, Inc. Multi frequency eddy current test apparatus with intermediate frequency processing
JPS625652Y2 (enrdf_load_stackoverflow) * 1980-11-29 1987-02-09
JPS5817353A (ja) * 1981-06-12 1983-02-01 Kobe Steel Ltd 複数コイル方式による多重周波数渦流探傷法及び多重周波数渦流探傷装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000131287A (ja) * 1998-10-23 2000-05-12 Japan Science & Technology Corp 磁気計測による探傷方法及び装置

Also Published As

Publication number Publication date
JPS59108955A (ja) 1984-06-23

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