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LU81135A1 - METHOD AND DEVICE FOR DETECTION BY EDDY CURRENTS OF VARIATIONS IN A PARAMETER LINKED TO A METAL PRODUCT - Google Patents

METHOD AND DEVICE FOR DETECTION BY EDDY CURRENTS OF VARIATIONS IN A PARAMETER LINKED TO A METAL PRODUCT

Info

Publication number
LU81135A1
LU81135A1 LU81135A LU81135A LU81135A1 LU 81135 A1 LU81135 A1 LU 81135A1 LU 81135 A LU81135 A LU 81135A LU 81135 A LU81135 A LU 81135A LU 81135 A1 LU81135 A1 LU 81135A1
Authority
LU
Luxembourg
Prior art keywords
variations
detection
eddy currents
metal product
parameter linked
Prior art date
Application number
LU81135A
Other languages
French (fr)
Inventor
B Boehm
G Labbe
Original Assignee
Siderurgie Fse Inst Rech
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 Siderurgie Fse Inst Rech filed Critical Siderurgie Fse Inst Rech
Publication of LU81135A1 publication Critical patent/LU81135A1/en

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)
LU81135A 1978-04-10 1979-04-10 METHOD AND DEVICE FOR DETECTION BY EDDY CURRENTS OF VARIATIONS IN A PARAMETER LINKED TO A METAL PRODUCT LU81135A1 (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 (1)

Publication Number Publication Date
LU81135A1 true LU81135A1 (en) 1979-11-07

Family

ID=9207300

Family Applications (1)

Application Number Title Priority Date Filing Date
LU81135A LU81135A1 (en) 1978-04-10 1979-04-10 METHOD AND DEVICE FOR DETECTION BY EDDY CURRENTS OF VARIATIONS IN A PARAMETER LINKED TO A METAL PRODUCT

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)

Families Citing this family (12)

* 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
EP0042881B1 (en) * 1980-06-27 1983-10-05 Institut Dr. Friedrich Förster Prüfgerätebau GmbH & Co. KG 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
US9222917B2 (en) * 2012-07-25 2015-12-29 General Electric Company Broadband eddy current probe
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

Also Published As

Publication number Publication date
FR2422952A1 (en) 1979-11-09
GB2019005A (en) 1979-10-24
DE2913877A1 (en) 1979-10-11
GB2019005B (en) 1983-02-16
FR2422952B1 (en) 1980-10-31
BE875330A (en) 1979-10-05

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