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DE3062493D1 - Digital eddy current apparatus for testing specimens - Google Patents

Digital eddy current apparatus for testing specimens

Info

Publication number
DE3062493D1
DE3062493D1 DE8080400266T DE3062493T DE3062493D1 DE 3062493 D1 DE3062493 D1 DE 3062493D1 DE 8080400266 T DE8080400266 T DE 8080400266T DE 3062493 T DE3062493 T DE 3062493T DE 3062493 D1 DE3062493 D1 DE 3062493D1
Authority
DE
Germany
Prior art keywords
eddy current
current apparatus
testing specimens
digital eddy
digital
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
DE8080400266T
Other languages
English (en)
Inventor
Costa Vieira David Da
Jacques Dinard
Alain Stossel
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.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
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 Commissariat a lEnergie Atomique CEA filed Critical Commissariat a lEnergie Atomique CEA
Application granted granted Critical
Publication of DE3062493D1 publication Critical patent/DE3062493D1/de
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)
DE8080400266T 1979-03-09 1980-02-26 Digital eddy current apparatus for testing specimens Expired DE3062493D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7906149A FR2451032A1 (fr) 1979-03-09 1979-03-09 Appareil numerique pour le controle de pieces par courants de foucault

Publications (1)

Publication Number Publication Date
DE3062493D1 true DE3062493D1 (en) 1983-05-05

Family

ID=9222981

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8080400266T Expired DE3062493D1 (en) 1979-03-09 1980-02-26 Digital eddy current apparatus for testing specimens

Country Status (5)

Country Link
US (1) US4322683A (de)
EP (1) EP0015822B1 (de)
JP (1) JPS55122145A (de)
DE (1) DE3062493D1 (de)
FR (1) FR2451032A1 (de)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4496904A (en) * 1980-05-22 1985-01-29 The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland Eddy current measurement apparatus for non-destructive testing in the vicinity of a fastener
FR2502337A1 (fr) * 1981-03-23 1982-09-24 Commissariat Energie Atomique Procede de controle non destructif par courants de foucault avec correction des effets d'entrefer et dispositif de mise en oeuvre
US4720681A (en) * 1981-06-08 1988-01-19 Schlumberger Technology Corporation Digital induction logging tool
US4499422A (en) * 1981-06-08 1985-02-12 Schlumberger Technology Corporation Digital induction logging tool including means for compensating for phase shift errors
US4499421A (en) * 1981-06-08 1985-02-12 Schlumberger Technology Corporation Digital induction logging system including means for generating a plurality of transmitter frequencies
US4455529A (en) * 1981-06-08 1984-06-19 Schlumberger Technology Corporation Digital induction logging tool including means for measuring phase quadrature components in a phase sensitive detector
DE3125732A1 (de) * 1981-06-30 1983-01-13 Nukem Gmbh, 6450 Hanau Verfahren und vorrichtung zur werkstoffpruefung nach dem wirbelstromprinzip
US4481471A (en) * 1981-08-14 1984-11-06 Westinghouse Electric Corp. Method and apparatus for the detection of anomalies in rotating members
JPS5858569A (ja) * 1981-10-02 1983-04-07 Fuji Xerox Co Ltd 電子複写機のトナ−比率検知装置
BE892243A (fr) * 1982-02-23 1982-06-16 Dev Et D Industrialisation Des Appareil de controle par courants de foucault a moyens d'equilibrage electroniques.
DE3213267A1 (de) * 1982-04-08 1983-10-20 Nukem Gmbh, 6450 Hanau Verfahren und vorrichtung zur pruefung von werkstoffen nach dem wirbelstromprinzip
US4709213A (en) * 1982-07-23 1987-11-24 Garrett Electronics, Inc. Metal detector having digital signal processing
US4620152A (en) * 1983-01-11 1986-10-28 Amf Tuboscope, Inc. Lift-off compensation of eddy current probes by translating without rotation the X-Y coordinate plot of the complex locus of the probe output
US4599560A (en) * 1983-04-11 1986-07-08 The Warner & Swasey Company AC excited transducer having stabilized phase sensitive demodulator circuit
FR2570501B1 (fr) * 1984-09-20 1987-12-18 Siderurgie Fse Inst Rech Procede de detection de defauts de surface par courants de foucault et dispositif mettant en oeuvre ce procede
US4798920A (en) * 1985-09-06 1989-01-17 Hitachi Seiko, Ltd. Stylus coordinate determining device with distortion compensation
DE3542159A1 (de) * 1985-11-28 1987-06-04 Nukem Gmbh Verfahren zur werkstoffpruefung nach dem wirbelstromprinzip und vorrichtung zur durchfuehrung des verfahrens
US4755753A (en) * 1986-07-23 1988-07-05 General Electric Company Eddy current surface mapping system for flaw detection
FR2627862A1 (fr) * 1988-02-26 1989-09-01 Commissariat Energie Atomique Procede de controle par courants de foucault impulsionnels et dispositif de mise en oeuvre
US6346807B1 (en) * 1999-10-22 2002-02-12 Bently Nevada Corporation Digital eddy current proximity system: apparatus and method
DE10229735A1 (de) * 2002-07-02 2004-01-22 rinas Gerätetechnik GmbH Verfahren zum Erkennen und Lokalisieren von Materialfehlern
KR100505929B1 (ko) * 2003-03-31 2005-08-04 삼성광주전자 주식회사 압축기 및 압축기의 배관연결방법
US7068041B2 (en) * 2003-11-26 2006-06-27 General Electric Company Method and system for multi-frequency inductive ratio measurement
US6873149B1 (en) 2003-11-26 2005-03-29 General Electric Company Method and system for eddy current proximity system noise reduction
US7113873B2 (en) * 2003-11-26 2006-09-26 General Electric Company Method and system for using eddy current transducers in pressure measurements
WO2006007832A1 (de) * 2004-07-19 2006-01-26 Prüftechnik Dieter Busch AG Vorrichtung und verfahren zur erkennung von defekten an gegenständen oder zur ortung von metallischen objekten
JP4756409B1 (ja) 2011-02-18 2011-08-24 大日機械工業株式会社 交番磁場を利用した非破壊検査装置および非破壊検査方法
CA2927853C (en) 2013-10-22 2022-05-10 Jentek Sensors, Inc. Impedance instrument
FR3151394A1 (fr) * 2023-07-20 2025-01-24 Psa Automobiles Sa Procede de controle de traitement thermique d’un bol de fusee de roue

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1335569A (fr) * 1962-07-07 1963-08-23 Schlumberger Prospection Perfectionnements aux appareils de mesure de conductivité par induction
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
US3337796A (en) * 1965-04-19 1967-08-22 Automation Forster Inc Eddy current testing device with means for sampling the output signal to provide a signal proportional to the instantaneous value of said output signal at a particular phase
JPS518347B1 (de) * 1968-06-12 1976-03-16
CH580811A5 (de) * 1975-01-14 1976-10-15 Sodeco Compteurs De Geneve
US4059795A (en) * 1976-06-03 1977-11-22 Sensor Corporation Digital eddy current apparatus for sensing and analyzing metallurgical characteristics of an electrically conductive material
US4084136A (en) * 1976-10-21 1978-04-11 Battelle Memorial Institute Eddy current nondestructive testing device for measuring variable characteristics of a sample utilizing Walsh functions
US4207520A (en) * 1978-04-06 1980-06-10 The United States Of America As Represented By The Secretary Of The Air Force Multiple frequency digital eddy current inspection system
DE2825958C2 (de) 1978-06-14 1986-02-20 Institut Dr. Friedrich Förster Prüfgerätebau GmbH & Co KG, 7410 Reutlingen Magnetisches oder magnetinduktives Werkstoffprüfgerät mit Nullpunktkompensationseinrichtung
US4230987A (en) * 1979-02-26 1980-10-28 Sensor Corporation Digital eddy current apparatus for generating metallurgical signatures and monitoring metallurgical contents of an electrically conductive material

Also Published As

Publication number Publication date
EP0015822B1 (de) 1983-03-30
JPS55122145A (en) 1980-09-19
EP0015822A1 (de) 1980-09-17
FR2451032A1 (fr) 1980-10-03
FR2451032B1 (de) 1981-10-23
US4322683A (en) 1982-03-30

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Legal Events

Date Code Title Description
8339 Ceased/non-payment of the annual fee