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ATE17525T1 - Wirbelstrom-pruefapparat mit elektronischen ausgleichvorrichtungen. - Google Patents

Wirbelstrom-pruefapparat mit elektronischen ausgleichvorrichtungen.

Info

Publication number
ATE17525T1
ATE17525T1 AT83400307T AT83400307T ATE17525T1 AT E17525 T1 ATE17525 T1 AT E17525T1 AT 83400307 T AT83400307 T AT 83400307T AT 83400307 T AT83400307 T AT 83400307T AT E17525 T1 ATE17525 T1 AT E17525T1
Authority
AT
Austria
Prior art keywords
output
input
digital
differential amplifier
reference potential
Prior art date
Application number
AT83400307T
Other languages
English (en)
Inventor
Hondt Jean-Pierre D
Original Assignee
Intercontrole Sa
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 Intercontrole Sa filed Critical Intercontrole Sa
Application granted granted Critical
Publication of ATE17525T1 publication Critical patent/ATE17525T1/de

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)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Analogue/Digital Conversion (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
AT83400307T 1982-02-23 1983-02-14 Wirbelstrom-pruefapparat mit elektronischen ausgleichvorrichtungen. ATE17525T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE0/207389A BE892243A (fr) 1982-02-23 1982-02-23 Appareil de controle par courants de foucault a moyens d'equilibrage electroniques.
EP83400307A EP0088652B1 (de) 1982-02-23 1983-02-14 Wirbelstrom-Prüfapparat mit elektronischen Ausgleichvorrichtungen

Publications (1)

Publication Number Publication Date
ATE17525T1 true ATE17525T1 (de) 1986-02-15

Family

ID=3843503

Family Applications (1)

Application Number Title Priority Date Filing Date
AT83400307T ATE17525T1 (de) 1982-02-23 1983-02-14 Wirbelstrom-pruefapparat mit elektronischen ausgleichvorrichtungen.

Country Status (10)

Country Link
US (1) US4556846A (de)
EP (1) EP0088652B1 (de)
JP (1) JPS58155355A (de)
AT (1) ATE17525T1 (de)
BE (1) BE892243A (de)
CA (1) CA1207837A (de)
DE (1) DE3361815D1 (de)
FR (1) FR2522152B1 (de)
IE (1) IE830316L (de)
SU (1) SU1281180A3 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4003330A1 (de) * 1990-02-05 1991-08-08 Foerster Inst Dr Friedrich Wirbelstrompruefgeraet

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4709213A (en) * 1982-07-23 1987-11-24 Garrett Electronics, Inc. Metal detector having digital signal processing
FR2570500B1 (fr) * 1984-09-20 1987-03-20 Siderurgie Fse Inst Rech Procede et dispositif de detection de defauts typiques sur un produit en defilement, notamment pour la detection de criques sur une brame
DE3525376A1 (de) * 1985-07-16 1987-01-29 Nukem Gmbh Verfahren und vorrichtung zur zerstoerungsfreien pruefung von ferromagnetischen koerpern mit oberflaechenabschnitten, die an kanten und/oder ecken aneinandergrenzen
DE3533011A1 (de) * 1985-09-16 1987-03-19 Kraftwerk Union Ag Einrichtung zur wirbelstrompruefung von metalloberflaechen
JPS62108150A (ja) * 1985-11-06 1987-05-19 Shigeru Kitagawa 微小亀裂の検出方法及びその装置
SE467711B (sv) * 1987-02-09 1992-08-31 Bengt Hjalmar Toernblom Anordning foer maetning/provning med virvelstroemsteknik medelst flera dynamiskt kompenserade givare
JPS6439502A (en) * 1987-08-05 1989-02-09 Man Design Co Length measuring instrument
US5059903A (en) * 1987-09-21 1991-10-22 Hitachi, Ltd. Method and apparatus utilizing a magnetic field for detecting degradation of metal material
US5055784A (en) * 1987-12-07 1991-10-08 American Research Corporation Of Virginia Bridgeless system for directly measuring complex impedance of an eddy current probe
US5144231A (en) * 1988-09-30 1992-09-01 Jeffrey Tenenbaum Eddy current detector for detecting an object with offset compensation
US5394084A (en) * 1991-12-23 1995-02-28 The Boeing Company Method and apparatus for reducing errors in eddy-current conductivity measurements due to lift-off by interpolating between a plurality of reference conductivity measurements
JP2929402B2 (ja) * 1992-07-10 1999-08-03 日石三菱株式会社 炭素繊維強化管状複合材の検査方法及び装置
US5623427A (en) * 1994-09-02 1997-04-22 Defelsko Corporation Nondestructive anodic capacity gauge
US5602474A (en) * 1995-06-06 1997-02-11 United Technologies Corporation Detecting cracks in non-uniform areas of metal parts including position correlation
US6433524B1 (en) 2001-03-15 2002-08-13 Rosemount Aerospace Inc. Resistive bridge interface circuit
CN110346731B (zh) * 2019-07-23 2024-04-26 武汉洲际电讯科技股份有限公司 一种通信用电池电流检测电路

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
GB1174748A (en) * 1967-08-17 1969-12-17 Tateisi Electronics Company Apparatus for Detecting Vehicles
CH625619A5 (de) * 1977-12-07 1981-09-30 Bbc Brown Boveri & Cie
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
FR2443682A1 (fr) * 1978-12-07 1980-07-04 Commissariat Energie Atomique Circuit de correction automatique d'un signal emis par un capteur differentiel desequilibre
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
FR2451032A1 (fr) * 1979-03-09 1980-10-03 Commissariat Energie Atomique Appareil numerique pour le controle de pieces par courants de foucault

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4003330A1 (de) * 1990-02-05 1991-08-08 Foerster Inst Dr Friedrich Wirbelstrompruefgeraet

Also Published As

Publication number Publication date
CA1207837A (en) 1986-07-15
BE892243A (fr) 1982-06-16
EP0088652B1 (de) 1986-01-15
SU1281180A3 (ru) 1986-12-30
US4556846A (en) 1985-12-03
IE830316L (en) 1983-08-23
FR2522152B1 (de) 1985-05-24
FR2522152A1 (de) 1983-08-26
DE3361815D1 (en) 1986-02-27
JPS58155355A (ja) 1983-09-16
EP0088652A1 (de) 1983-09-14

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Legal Events

Date Code Title Description
UEP Publication of translation of european patent specification
REN Ceased due to non-payment of the annual fee