FR2345721A1 - Procede et dispositif permettant de detecter par voie magnetique des defauts dans des tubes - Google Patents

Procede et dispositif permettant de detecter par voie magnetique des defauts dans des tubes

Info

Publication number
FR2345721A1
FR2345721A1 FR7708867A FR7708867A FR2345721A1 FR 2345721 A1 FR2345721 A1 FR 2345721A1 FR 7708867 A FR7708867 A FR 7708867A FR 7708867 A FR7708867 A FR 7708867A FR 2345721 A1 FR2345721 A1 FR 2345721A1
Authority
FR
France
Prior art keywords
faults
channels
fault
pipes
signals
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
FR7708867A
Other languages
English (en)
Other versions
FR2345721B3 (fr
Inventor
Friedrich Forster
Alfons Kalisch
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.)
Institut Dr Friedrich Foerster Pruefgeraetebau GmbH and Co KG
Original Assignee
Institut Dr Friedrich Foerster Pruefgeraetebau GmbH and Co KG
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 Institut Dr Friedrich Foerster Pruefgeraetebau GmbH and Co KG filed Critical Institut Dr Friedrich Foerster Pruefgeraetebau GmbH and Co KG
Publication of FR2345721A1 publication Critical patent/FR2345721A1/fr
Application granted granted Critical
Publication of FR2345721B3 publication Critical patent/FR2345721B3/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
    • 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

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)
FR7708867A 1976-03-25 1977-03-24 Procede et dispositif permettant de detecter par voie magnetique des defauts dans des tubes Granted FR2345721A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2612697A DE2612697C3 (de) 1976-03-25 1976-03-25 Verfahren und Einrichtung zur magnetischen Fehlerprüfung an Rohren

Publications (2)

Publication Number Publication Date
FR2345721A1 true FR2345721A1 (fr) 1977-10-21
FR2345721B3 FR2345721B3 (fr) 1980-01-04

Family

ID=5973415

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7708867A Granted FR2345721A1 (fr) 1976-03-25 1977-03-24 Procede et dispositif permettant de detecter par voie magnetique des defauts dans des tubes

Country Status (3)

Country Link
US (1) USRE31109E (fr)
DE (1) DE2612697C3 (fr)
FR (1) FR2345721A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0039793A2 (fr) * 1980-05-10 1981-11-18 Institut Dr. Friedrich Förster Prüfgerätebau GmbH & Co. KG Procédé et appareil pour interpréter un signal de défaut
EP0594844A1 (fr) * 1992-05-14 1994-05-04 Western Atlas International, Inc. Detecteur magnetique de defauts dans des objets ferromagnetiques

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2925552A (en) * 1957-11-29 1960-02-16 Sperry Prod Inc Rail flaw detector mechanism
US3271664A (en) * 1961-12-04 1966-09-06 Magnaflux Corp Combined leakage field and eddy current detection system
US3343079A (en) * 1963-07-01 1967-09-19 American Mach & Foundry Apparatus and method for electromagnetically distinguishing between outside and inside flaws in magnetizable members utilizing a leakage field detector
US3538433A (en) * 1968-07-15 1970-11-03 American Mach & Foundry Apparatus for discriminating between inside and outside defects using a combined leakage field and eddy current test system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0039793A2 (fr) * 1980-05-10 1981-11-18 Institut Dr. Friedrich Förster Prüfgerätebau GmbH & Co. KG Procédé et appareil pour interpréter un signal de défaut
EP0039793A3 (en) * 1980-05-10 1983-04-06 Institut Dr. Friedrich Forster Prufgeratebau Gmbh & Co. Kg Method and apparatus to read a flaw signal
EP0594844A1 (fr) * 1992-05-14 1994-05-04 Western Atlas International, Inc. Detecteur magnetique de defauts dans des objets ferromagnetiques
EP0594844A4 (en) * 1992-05-14 1994-09-21 Western Atlas Int Inc Magnetic flaw detector for tubular goods

Also Published As

Publication number Publication date
DE2612697A1 (de) 1977-10-06
FR2345721B3 (fr) 1980-01-04
DE2612697B2 (de) 1978-10-26
DE2612697C3 (de) 1979-07-05
USRE31109E (en) 1982-12-21

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