JPS61237045A - 欠陥形状検出方法 - Google Patents

欠陥形状検出方法

Info

Publication number
JPS61237045A
JPS61237045A JP7830485A JP7830485A JPS61237045A JP S61237045 A JPS61237045 A JP S61237045A JP 7830485 A JP7830485 A JP 7830485A JP 7830485 A JP7830485 A JP 7830485A JP S61237045 A JPS61237045 A JP S61237045A
Authority
JP
Japan
Prior art keywords
potential difference
defect
distribution
crack
shape
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.)
Granted
Application number
JP7830485A
Other languages
English (en)
Japanese (ja)
Other versions
JPH049470B2 (enrdf_load_stackoverflow
Inventor
Makoto Hayashi
真琴 林
Shinji Sakata
信二 坂田
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP7830485A priority Critical patent/JPS61237045A/ja
Priority to US06/852,313 priority patent/US4764970A/en
Priority to DE19863612651 priority patent/DE3612651A1/de
Publication of JPS61237045A publication Critical patent/JPS61237045A/ja
Publication of JPH049470B2 publication Critical patent/JPH049470B2/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
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
    • G01N27/20—Investigating the presence of flaws

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 Electric Means (AREA)
JP7830485A 1985-04-15 1985-04-15 欠陥形状検出方法 Granted JPS61237045A (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP7830485A JPS61237045A (ja) 1985-04-15 1985-04-15 欠陥形状検出方法
US06/852,313 US4764970A (en) 1985-04-15 1986-04-15 Method and apparatus for detecting cracks
DE19863612651 DE3612651A1 (de) 1985-04-15 1986-04-15 Verfahren und vorrichtung zum erfassen von rissen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7830485A JPS61237045A (ja) 1985-04-15 1985-04-15 欠陥形状検出方法

Publications (2)

Publication Number Publication Date
JPS61237045A true JPS61237045A (ja) 1986-10-22
JPH049470B2 JPH049470B2 (enrdf_load_stackoverflow) 1992-02-20

Family

ID=13658184

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7830485A Granted JPS61237045A (ja) 1985-04-15 1985-04-15 欠陥形状検出方法

Country Status (1)

Country Link
JP (1) JPS61237045A (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6435357A (en) * 1987-07-31 1989-02-06 Hitachi Ltd Deciding method for surface cracking
JP2005345157A (ja) * 2004-05-31 2005-12-15 Toshiba Corp 金属材料のき裂深さ検査方法
JP2007057448A (ja) * 2005-08-26 2007-03-08 Hitachi Ltd 欠陥モニタリング装置
JP2014126375A (ja) * 2012-12-25 2014-07-07 Ntn Corp 焼入れ品質検査装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58196450A (ja) * 1982-05-12 1983-11-15 Hitachi Ltd き裂形状検出法

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58196450A (ja) * 1982-05-12 1983-11-15 Hitachi Ltd き裂形状検出法

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6435357A (en) * 1987-07-31 1989-02-06 Hitachi Ltd Deciding method for surface cracking
JP2005345157A (ja) * 2004-05-31 2005-12-15 Toshiba Corp 金属材料のき裂深さ検査方法
JP2007057448A (ja) * 2005-08-26 2007-03-08 Hitachi Ltd 欠陥モニタリング装置
JP2014126375A (ja) * 2012-12-25 2014-07-07 Ntn Corp 焼入れ品質検査装置

Also Published As

Publication number Publication date
JPH049470B2 (enrdf_load_stackoverflow) 1992-02-20

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