FR2476318A1 - Appareil de controle par courants de foucault, destine a detecter les defauts de surface de pieces metalliques - Google Patents

Appareil de controle par courants de foucault, destine a detecter les defauts de surface de pieces metalliques Download PDF

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Publication number
FR2476318A1
FR2476318A1 FR8102162A FR8102162A FR2476318A1 FR 2476318 A1 FR2476318 A1 FR 2476318A1 FR 8102162 A FR8102162 A FR 8102162A FR 8102162 A FR8102162 A FR 8102162A FR 2476318 A1 FR2476318 A1 FR 2476318A1
Authority
FR
France
Prior art keywords
control
frequency
coil
demodulator
eddy current
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
FR8102162A
Other languages
English (en)
French (fr)
Other versions
FR2476318B1 (ja
Inventor
Hans-Jurgen Hentrich
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.)
SKF GmbH
Original Assignee
SKF Kugellagerfabriken GmbH
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 SKF Kugellagerfabriken GmbH filed Critical SKF Kugellagerfabriken GmbH
Publication of FR2476318A1 publication Critical patent/FR2476318A1/fr
Application granted granted Critical
Publication of FR2476318B1 publication Critical patent/FR2476318B1/fr
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
    • G01N27/9046—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 by analysing electrical signals
    • G01N27/9053—Compensating for probe to workpiece spacing
    • 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
    • G01N27/9046—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 by analysing electrical signals

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)
FR8102162A 1980-02-16 1981-02-04 Appareil de controle par courants de foucault, destine a detecter les defauts de surface de pieces metalliques Granted FR2476318A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3005915A DE3005915C2 (de) 1980-02-16 1980-02-16 Wirbelstromprüfgerät für Oberflächenfehler

Publications (2)

Publication Number Publication Date
FR2476318A1 true FR2476318A1 (fr) 1981-08-21
FR2476318B1 FR2476318B1 (ja) 1984-07-13

Family

ID=6094846

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8102162A Granted FR2476318A1 (fr) 1980-02-16 1981-02-04 Appareil de controle par courants de foucault, destine a detecter les defauts de surface de pieces metalliques

Country Status (4)

Country Link
DE (1) DE3005915C2 (ja)
FR (1) FR2476318A1 (ja)
GB (1) GB2069708A (ja)
IT (1) IT1135435B (ja)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2141234B (en) * 1983-06-07 1986-11-12 Mo Energeticheskij Institut Eddy-current flaw detector
DE3824948A1 (de) * 1988-07-22 1990-01-25 Fiz Energet I An Latvssr Wirbelstrom-einrichtung zur zerstoerungsfreien pruefung
DE4003330A1 (de) * 1990-02-05 1991-08-08 Foerster Inst Dr Friedrich Wirbelstrompruefgeraet
JP2008089328A (ja) 2006-09-29 2008-04-17 Hitachi Ltd 渦電流探傷装置及び渦電流探傷方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB596182A (en) * 1945-07-24 1947-12-30 British Thomson Houston Co Ltd Improvements relating to apparatus for detecting flaws in metal wire
GB870487A (en) * 1958-01-24 1961-06-14 Republic Steel Corp Flaw detecting device
FR2065234A5 (ja) * 1969-10-10 1971-07-23 Automation Ind Inc
FR2124952A5 (ja) * 1971-02-01 1972-09-22 Automation Ind Inc
FR2337340A1 (fr) * 1975-12-29 1977-07-29 Law Engineers K J Procede et appareil de mesure d'une caracteristique d'une matiere

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1475517A (en) * 1974-06-27 1977-06-01 British Steel Corp Detection of surface defects in elongate metallic members
DE2850433A1 (de) * 1977-11-22 1979-05-23 British Steel Corp Vorrichtung zum auffinden von oberflaechenfehlern an werkstuecken

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB596182A (en) * 1945-07-24 1947-12-30 British Thomson Houston Co Ltd Improvements relating to apparatus for detecting flaws in metal wire
GB870487A (en) * 1958-01-24 1961-06-14 Republic Steel Corp Flaw detecting device
FR2065234A5 (ja) * 1969-10-10 1971-07-23 Automation Ind Inc
FR2124952A5 (ja) * 1971-02-01 1972-09-22 Automation Ind Inc
FR2337340A1 (fr) * 1975-12-29 1977-07-29 Law Engineers K J Procede et appareil de mesure d'une caracteristique d'une matiere

Also Published As

Publication number Publication date
FR2476318B1 (ja) 1984-07-13
IT1135435B (it) 1986-08-20
DE3005915C2 (de) 1985-01-10
GB2069708A (en) 1981-08-26
DE3005915A1 (de) 1981-08-27
IT8119687A0 (it) 1981-02-12

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Date Code Title Description
ST Notification of lapse