ATE16530T1 - Digitale wirbelstromvorrichtung zur identifizierung leitender gegenstaende mit unbekannter zusammensetzung. - Google Patents

Digitale wirbelstromvorrichtung zur identifizierung leitender gegenstaende mit unbekannter zusammensetzung.

Info

Publication number
ATE16530T1
ATE16530T1 AT79101339T AT79101339T ATE16530T1 AT E16530 T1 ATE16530 T1 AT E16530T1 AT 79101339 T AT79101339 T AT 79101339T AT 79101339 T AT79101339 T AT 79101339T AT E16530 T1 ATE16530 T1 AT E16530T1
Authority
AT
Austria
Prior art keywords
phase values
coil
capacitance
phase
identification
Prior art date
Application number
AT79101339T
Other languages
English (en)
Inventor
George Mordwinkin
Original Assignee
Sensor Corp
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 Sensor Corp filed Critical Sensor Corp
Application granted granted Critical
Publication of ATE16530T1 publication Critical patent/ATE16530T1/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

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)
AT79101339T 1979-02-26 1979-05-02 Digitale wirbelstromvorrichtung zur identifizierung leitender gegenstaende mit unbekannter zusammensetzung. ATE16530T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/015,061 US4230987A (en) 1979-02-26 1979-02-26 Digital eddy current apparatus for generating metallurgical signatures and monitoring metallurgical contents of an electrically conductive material
EP79101339A EP0014729B1 (de) 1979-02-26 1979-05-02 Digitale Wirbelstromvorrichtung zur Identifizierung leitender Gegenstände mit unbekannter Zusammensetzung

Publications (1)

Publication Number Publication Date
ATE16530T1 true ATE16530T1 (de) 1985-11-15

Family

ID=21769315

Family Applications (1)

Application Number Title Priority Date Filing Date
AT79101339T ATE16530T1 (de) 1979-02-26 1979-05-02 Digitale wirbelstromvorrichtung zur identifizierung leitender gegenstaende mit unbekannter zusammensetzung.

Country Status (4)

Country Link
US (1) US4230987A (de)
EP (1) EP0014729B1 (de)
AT (1) ATE16530T1 (de)
DE (1) DE2967543D1 (de)

Families Citing this family (50)

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FR2451032A1 (fr) * 1979-03-09 1980-10-03 Commissariat Energie Atomique Appareil numerique pour le controle de pieces par courants de foucault
US4347622A (en) * 1980-04-07 1982-08-31 General Electric Company Signature surveillance of nuclear fuel
GB2074736B (en) * 1980-04-26 1984-03-07 Lucas Industries Ltd Displacement measuring transducers and their use for sensing vehicle suspension displacements
US4450405A (en) * 1980-07-14 1984-05-22 The Boeing Company Alloy testing apparatus using eddy current conductivity probe
US4499422A (en) * 1981-06-08 1985-02-12 Schlumberger Technology Corporation Digital induction logging tool including means for compensating for phase shift errors
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
US4514687A (en) * 1982-07-07 1985-04-30 Gte Automatic Electric Incorporated Hall effect device test circuit
US4709213A (en) * 1982-07-23 1987-11-24 Garrett Electronics, Inc. Metal detector having digital signal processing
US4488112A (en) * 1982-08-30 1984-12-11 Gte Automatic Electric Inc. Hall effect device test circuit
US4491794A (en) * 1982-10-29 1985-01-01 Gte Automatic Electric Inc. Hall effect device test circuit
US4526177A (en) * 1983-06-24 1985-07-02 Rudy Michael A Electronic anatomical probe
US4639669A (en) * 1983-09-26 1987-01-27 Lockheed Missiles & Space Company, Inc. Pulsed electromagnetic nondestructive test method for determining volume density of graphite fibers in a graphite-epoxy composite material
US4510857A (en) * 1983-12-08 1985-04-16 Aluminum Company Of America Container recycling apparatus having shock mounted manually rotatable carrier
US4519306A (en) * 1983-12-08 1985-05-28 Aluminum Company Of America Process for recycling containers
US4558775A (en) * 1983-12-08 1985-12-17 Aluminum Company Of America Apparatus for passive analysis of containers to determine acceptability for recycling
US4526096A (en) * 1983-12-08 1985-07-02 Aluminum Company Of America Apparatus for processing used containers having improved crusher means
US4519307A (en) * 1983-12-08 1985-05-28 Aluminum Company Of America Container recycling apparatus using scanning means to read code markings on containers
US4510860A (en) * 1983-12-08 1985-04-16 Aluminum Company Of America Latching mechanism for manually rotatable carrier in apparatus for processing recyclable containers
US4512253A (en) * 1983-12-08 1985-04-23 Aluminum Company Of America Apparatus for processing recyclable containers
EP0211905B1 (de) * 1985-02-15 1990-10-03 The Broken Hill Proprietary Company Limited Klassifizierung von stahl
US4604510A (en) * 1985-05-20 1986-08-05 Tocco, Inc. Method and apparatus for heat treating camshafts
US4732624A (en) * 1985-08-26 1988-03-22 Tocco, Inc. Method for hardening camshafts
DE3542159A1 (de) * 1985-11-28 1987-06-04 Nukem Gmbh Verfahren zur werkstoffpruefung nach dem wirbelstromprinzip und vorrichtung zur durchfuehrung des verfahrens
US4675057A (en) * 1986-02-28 1987-06-23 Tocco, Inc. Method of heat treating using eddy current temperature determination
US4763274A (en) * 1986-06-24 1988-08-09 Westinghouse Electric Corp. Machine implemented analysis eddy current data
ZA876706B (en) * 1986-09-08 1988-05-25 Candy Bruce Halcro Method of discrimination detection using two frequencies
US4897518A (en) * 1987-03-06 1990-01-30 Tocco, Inc. Method of monitoring induction heating cycle
US4816633A (en) * 1987-03-06 1989-03-28 Tocco, Inc. Method of monitoring induction heating cycle
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
US4868910A (en) * 1988-02-16 1989-09-19 White's Electronics, Inc. Metal detector with microprocessor control and analysis
US5034690A (en) * 1988-04-01 1991-07-23 Taliaferro Sam W Method and apparatus for quantitatively determining whether at least one of two or more ferromagnetic components is missing from an assembly
DE3815009A1 (de) * 1988-04-30 1989-11-09 Leybold Ag Einrichtung und verfahren zum zerstoerungsfreien messen des ohmschen widerstands duenner schichten nach dem wirbelstrom-prinzip
US4947117A (en) * 1989-01-03 1990-08-07 Iowa State University Research Foundation Nondestructive detection of an undesirable metallic phase, T1, during processing of aluminum-lithium alloys
US5028870A (en) * 1989-04-18 1991-07-02 Environmental Products Corporation Sensor system method and apparatus for discrimination of metallic objects based on a variation in self inductance
US5231355A (en) * 1990-06-18 1993-07-27 The Charles Machine Works, Inc. Locator transmitter having an automatically tuned antenna
FR2671187A1 (fr) * 1990-12-28 1992-07-03 Cga Hbs Dispositif de controle non destructif a courants de foucault.
US5250776A (en) * 1991-09-30 1993-10-05 Tocco, Inc. Apparatus and method of measuring temperature
US5420507A (en) * 1992-09-28 1995-05-30 Edward L. Laskowski Method and apparatus for sensing a target characteristic by measuring both impedance and resonant frequency of a tank circuit
GB2296973A (en) * 1994-11-25 1996-07-17 Colin Andrew Reason Metal discriminator
DE69631850T2 (de) * 1995-03-31 2004-08-12 Cnh Belgium N.V. Prüfung der Induktion von Metalldetektorspulen
US5528142A (en) * 1995-06-19 1996-06-18 Feickert; Carl A. Resonant eddy analysis- a contactless, inductive method for deriving quantitative information about the conductivity and permeability of a test sample
US5811970A (en) * 1996-05-10 1998-09-22 Northrop Grumman Corporation Electromagnetic test for microstructure anomalies such as alpha-case, and for carbide precipitates and untempered and overtempered martensite
US6346807B1 (en) 1999-10-22 2002-02-12 Bently Nevada Corporation Digital eddy current proximity system: apparatus and method
KR100505929B1 (ko) * 2003-03-31 2005-08-04 삼성광주전자 주식회사 압축기 및 압축기의 배관연결방법
ATE432467T1 (de) * 2004-07-19 2009-06-15 Busch Dieter & Co Prueftech Verfahren und vorrichtung zur zerstörungs-und berührungsfreien erfassung von fehlern in einem relativ zu einer sonde bewegten prüfling
US7491319B1 (en) * 2008-03-17 2009-02-17 Te Hung En Enterprise Co., Ltd. Inspecting apparatus with eddy current inspection
AT512427B1 (de) 2012-01-17 2014-01-15 Ke Kelit Kunststoffwerk Gmbh Schaltung zum induktiven erwärmen eines metalles
CN103940655A (zh) * 2014-05-07 2014-07-23 广西玉柴机器股份有限公司 高压油管金相试样制备方法
CN111915792B (zh) * 2020-05-19 2022-06-07 武汉卓目科技有限公司 一种图像斑马线图文的识别方法及装置

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* Cited by examiner, † Cited by third party
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GB600914A (en) * 1943-09-16 1948-04-22 Standard Telephones Cables Ltd Improvements in or relating to apparatus for testing and examining metals
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
US3314006A (en) * 1965-04-19 1967-04-11 Automation Forster Inc Variable frequency eddy current test device with variable means for maintaining the apparent impedance of the probe constant at all frequencies
US3918565B1 (en) * 1972-10-12 1993-10-19 Mars, Incorporated Method and apparatus for coin selection utilizing a programmable memory
FR2305809A1 (fr) * 1975-03-25 1976-10-22 Crouzet Sa Dispositif d'authentification de titres monetaires
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

Also Published As

Publication number Publication date
DE2967543D1 (en) 1985-12-19
EP0014729B1 (de) 1985-11-13
US4230987A (en) 1980-10-28
EP0014729A1 (de) 1980-09-03

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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