GB2019005B - Eddy-current detection - Google Patents

Eddy-current detection

Info

Publication number
GB2019005B
GB2019005B GB7912532A GB7912532A GB2019005B GB 2019005 B GB2019005 B GB 2019005B GB 7912532 A GB7912532 A GB 7912532A GB 7912532 A GB7912532 A GB 7912532A GB 2019005 B GB2019005 B GB 2019005B
Authority
GB
United Kingdom
Prior art keywords
eddy
current detection
detection
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.)
Expired
Application number
GB7912532A
Other versions
GB2019005A (en
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 de Recherches de la Siderurgie Francaise IRSID
Original Assignee
Institut de Recherches de la Siderurgie Francaise IRSID
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 de Recherches de la Siderurgie Francaise IRSID filed Critical Institut de Recherches de la Siderurgie Francaise IRSID
Publication of GB2019005A publication Critical patent/GB2019005A/en
Application granted granted Critical
Publication of GB2019005B publication Critical patent/GB2019005B/en
Expired 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

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)
GB7912532A 1978-04-10 1979-04-10 Eddy-current detection Expired GB2019005B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7811459A FR2422952A1 (en) 1978-04-10 1978-04-10 METHOD AND DEVICE FOR DETECTION BY EDDY CURRENTS OF VARIATIONS IN A PARAMETER LINKED TO A METAL PRODUCT

Publications (2)

Publication Number Publication Date
GB2019005A GB2019005A (en) 1979-10-24
GB2019005B true GB2019005B (en) 1983-02-16

Family

ID=9207300

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7912532A Expired GB2019005B (en) 1978-04-10 1979-04-10 Eddy-current detection

Country Status (5)

Country Link
BE (1) BE875330A (en)
DE (1) DE2913877A1 (en)
FR (1) FR2422952A1 (en)
GB (1) GB2019005B (en)
LU (1) LU81135A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103575802A (en) * 2012-07-25 2014-02-12 通用电气公司 Broadband eddy current probe

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2459476A1 (en) * 1979-06-14 1981-01-09 Siderurgie Fse Inst Rech METHOD AND DEVICE FOR INSPECTING METAL PRODUCTS BY CURRENT FOUCAULT
DE3065151D1 (en) * 1980-06-27 1983-11-10 Foerster Inst Dr Friedrich Method and apparatus for testing a metallic test piece
CA1124328A (en) * 1980-11-27 1982-05-25 Henry M. O'connor Multifrequency eddy current testing device
FR2515353A1 (en) * 1981-10-27 1983-04-29 Siderurgie Fse Inst Rech METHOD OF DETECTING DEFECTS OF A METAL PRODUCT BY CURRENT FOUCAULT
DE3207569C2 (en) * 1982-03-03 1986-05-28 Herbert 8553 Ebermannstadt Baumgartner Testing device for non-destructive testing of materials
DE3213267A1 (en) * 1982-04-08 1983-10-20 Nukem Gmbh, 6450 Hanau METHOD AND DEVICE FOR TESTING MATERIALS ACCORDING TO THE FLUID FLOW PRINCIPLE
US4823082A (en) * 1986-02-18 1989-04-18 Kabushiki Kaisha Kobe Seiko Sho Signal processing method for an electromagnetic induction test
FR2758882B1 (en) * 1997-01-27 1999-04-09 Intercontrole Sa METHOD OF NON-DESTRUCTIVE MONITORING BY EDGE CURRENTS OF NUCLEAR REACTOR CONTROL CLUSTERS IN THE PRESENCE OF DISTURBING ELEMENTS
FR2773615B1 (en) * 1998-01-09 2000-03-31 Peugeot METHOD FOR NON-DESTRUCTIVE CONTROL OF THE THICKNESS OF A HARDENED LAYER BY HEAT TREATMENT OF MECHANICAL PARTS OF AN INDUSTRIAL MANUFACTURE AND ITS APPLICATIONS
DE10127806A1 (en) * 2001-06-07 2002-12-19 Siemens Ag Process for acquiring and/or monitoring material properties of electrically conducting material used in rolling mills comprises using electromagnetic eddy current technique with eddy current excitation and detection
CN112665461A (en) * 2020-12-24 2021-04-16 上海微波技术研究所（中国电子科技集团公司第五十研究所） Identification method and system based on multi-frequency electromagnetic induction and relaxation frequency parameters

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3056081A (en) * 1959-06-22 1962-09-25 Budd Co Electromagnetic testing
US3229198A (en) * 1962-09-28 1966-01-11 Hugo L Libby Eddy current nondestructive testing device for measuring multiple parameter variables of a metal sample
US3419797A (en) * 1966-01-21 1968-12-31 Atomic Energy Commission Usa Nondestructive eddy current testing device for testing metal tubing and instantaneously displaying the cross section of said tubing
US3706029A (en) * 1971-11-16 1972-12-12 Atomic Energy Commission Multiple parameter eddy current nondestructive testing device using plural transformation rotators to resolve each parameter
US4061968A (en) * 1976-09-07 1977-12-06 Commissariat A L'energie Atomique Process of and apparatus for non-destructive eddy current testing involves the suppression of displayed lobes corresponding to fault parameters to be eliminated from the display
DE2739873A1 (en) * 1977-09-05 1979-03-08 Fraunhofer Ges Forschung Eddy current materials testing - using multiple frequencies and multiplexers controlled by timing pulse generator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103575802A (en) * 2012-07-25 2014-02-12 通用电气公司 Broadband eddy current probe

Also Published As

Publication number Publication date
LU81135A1 (en) 1979-11-07
GB2019005A (en) 1979-10-24
DE2913877A1 (en) 1979-10-11
FR2422952B1 (en) 1980-10-31
BE875330A (en) 1979-10-05
FR2422952A1 (en) 1979-11-09

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19930410