DE3580357D1 - Wirbelstromverfahren zur feststellung von oberflaechenfehlern und vorrichtung zum durchfuehren dieses verfahrens. - Google Patents
Wirbelstromverfahren zur feststellung von oberflaechenfehlern und vorrichtung zum durchfuehren dieses verfahrens.Info
- Publication number
- DE3580357D1 DE3580357D1 DE8585904643T DE3580357T DE3580357D1 DE 3580357 D1 DE3580357 D1 DE 3580357D1 DE 8585904643 T DE8585904643 T DE 8585904643T DE 3580357 T DE3580357 T DE 3580357T DE 3580357 D1 DE3580357 D1 DE 3580357D1
- Authority
- DE
- Germany
- Prior art keywords
- carrying
- eddy current
- surface defects
- ascertaining
- current method
- 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 - Lifetime
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
-
- 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
- G01N27/904—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 with two or more sensors
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)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8414435A FR2570501B1 (fr) | 1984-09-20 | 1984-09-20 | Procede de detection de defauts de surface par courants de foucault et dispositif mettant en oeuvre ce procede |
PCT/FR1985/000258 WO1986001896A1 (fr) | 1984-09-20 | 1985-09-20 | Procede de detection de defauts de surface par courants de foucault et dispositif mettant en oeuvre ce procede |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3580357D1 true DE3580357D1 (de) | 1990-12-06 |
Family
ID=9307898
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8585904643T Expired - Lifetime DE3580357D1 (de) | 1984-09-20 | 1985-09-20 | Wirbelstromverfahren zur feststellung von oberflaechenfehlern und vorrichtung zum durchfuehren dieses verfahrens. |
Country Status (11)
Country | Link |
---|---|
US (1) | US4799010A (de) |
EP (1) | EP0195794B1 (de) |
JP (1) | JPH0772729B2 (de) |
KR (1) | KR920010293B1 (de) |
AU (1) | AU586193B2 (de) |
BR (1) | BR8506935A (de) |
CA (1) | CA1250021A (de) |
DE (1) | DE3580357D1 (de) |
ES (1) | ES8702657A1 (de) |
FR (1) | FR2570501B1 (de) |
WO (1) | WO1986001896A1 (de) |
Families Citing this family (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI863487A (fi) * | 1986-08-27 | 1988-02-28 | Matti Viikari | Pao elektromagnetisk induktion baserande foerfarande och anordning foer kontroll av skicktet av elektrisk isolering hos ledningar i ett ledande medium. |
USRE36986E (en) * | 1987-10-02 | 2000-12-12 | Massachusetts Institute Of Technology | Apparatus and methods for measuring permeability and conductivity in materials using multiple wavenumber magnetic interrogations |
CH676526A5 (de) * | 1988-05-30 | 1991-01-31 | Asea Brown Boveri | |
US4922201A (en) * | 1989-01-09 | 1990-05-01 | The United States Of America As Represented By The Secretary Of The Navy | Eddy current method for measuring electrical resistivity and device for providing accurate phase detection |
US4924182A (en) * | 1989-01-09 | 1990-05-08 | The United States Of America As Represented By The Secretary Of The Navy | Eddy current method to measure distance between scanned surface and a subsurface defect |
USH879H (en) * | 1989-06-30 | 1991-01-01 | The United States Of America As Represented By The Secretary Of The Navy | Method and device for inspecting circumferentially conducting materials |
US5453689A (en) | 1991-12-06 | 1995-09-26 | Massachusetts Institute Of Technology | Magnetometer having periodic winding structure and material property estimator |
US5619136A (en) * | 1992-02-11 | 1997-04-08 | Silverwing, Limited | Detection of discontinuities below the surface of magnetizable material using differentially coupled sensors to detect magnetic flux leakage |
FR2708741B1 (fr) * | 1993-08-02 | 1995-09-08 | Valinox Nucleaire | Procédé permettant de réduire le bruit de fond au cours du contrôle de tubes métalliques par courant de Foucault et tubes réalisés par ce procédé. |
US5698977A (en) * | 1993-10-12 | 1997-12-16 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Eddy current method for fatigue testing |
JPH0854375A (ja) * | 1994-08-11 | 1996-02-27 | Kaisei Enjinia Kk | 電磁誘導型検査装置 |
JPH08105863A (ja) * | 1994-10-05 | 1996-04-23 | Kobe Steel Ltd | 金属材の導電率分布計測装置 |
US5793206A (en) | 1995-08-25 | 1998-08-11 | Jentek Sensors, Inc. | Meandering winding test circuit |
EP0833150B1 (de) * | 1996-09-27 | 2003-11-26 | Wilfried Dr.-Ing. Reimche | Messverfahren und Messvorrichtung zur Materialcharakterisierung von Halbzeugen und Maschinenbauteilen |
EP0954760A2 (de) * | 1997-01-06 | 1999-11-10 | Jentek Sensors, Inc. | Auffinden von unterirdischen objekten mittels magnetometer und dielektrometer |
US6781387B2 (en) | 1997-01-06 | 2004-08-24 | Jentek Sensors, Inc. | Inspection method using penetrant and dielectrometer |
US6486673B1 (en) | 1997-01-06 | 2002-11-26 | Jentek Sensors, Inc. | Segmented field dielectrometer |
CA2282650A1 (en) | 1997-03-13 | 1998-09-17 | Jentek Sensors, Inc. | Magnetometer detection of fatigue damage in aircraft |
WO1999022231A1 (en) | 1997-10-29 | 1999-05-06 | Jentek Sensors, Inc. | Absolute property measurement with air calibration |
AU1405199A (en) | 1997-11-14 | 1999-06-07 | Jentek Sensors, Inc. | Multiple frequency quantitative coating characterization |
GB2354589B (en) * | 1998-05-12 | 2003-10-08 | Jentek Sensors Inc | Methods for utilizing dielectrometry signals using estimation grids |
US6414483B1 (en) * | 2000-07-27 | 2002-07-02 | General Electric Company | Eddy current inspection method and apparatus for detecting flaws in an electrically conductive component |
US6570379B2 (en) * | 2000-08-24 | 2003-05-27 | Shell Oil Company | Method for inspecting an object of electrically conducting material |
US6400146B1 (en) | 2000-09-12 | 2002-06-04 | Her Majesty The Queen In Right Of Canada As Represented By The Ministry Of Natural Resources | Sensor head for ACFM based crack detection |
WO2004053464A1 (en) * | 2002-12-09 | 2004-06-24 | Rensselaer Polytechnic Institute | Embedded nanotube array sensor and method of making a nanotube polymer composite |
US6914427B2 (en) | 2003-03-14 | 2005-07-05 | The Boeing Company | Eddy current probe having sensing elements defined by first and second elongated coils and an associated inspection method |
US9250223B2 (en) * | 2004-03-25 | 2016-02-02 | Thomas C. Targosz | Method and apparatus for sensing magnetic radiation through tagging |
JP4805631B2 (ja) * | 2005-08-09 | 2011-11-02 | 旭化成株式会社 | 磁性体分析装置及び磁性体分析方法 |
GB2456583B (en) * | 2008-01-21 | 2012-09-05 | Ge Inspection Technologies Ltd | Eddy current inspection system and method of eddy current flaw detection |
EP2447889A1 (de) * | 2010-10-29 | 2012-05-02 | Siemens Aktiengesellschaft | Verfahren zur Modellierung eines Defektmanagements in einem Herstellungsverfahren und zur Handhabung des Defekts während des Herstellungsverfahrens basierend auf dem modellierten Defektmanagement |
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 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE846929C (de) * | 1943-12-28 | 1952-08-18 | Ernst Heinkel Ag | Magnet-induktive Fehlerpruefung von Stahlhalbzeugen |
US3166710A (en) * | 1960-11-14 | 1965-01-19 | Shell Oil Co | Apparatus having segmented pickup coil and output circuit means responsive to signals from a single coil segment |
US3286168A (en) * | 1962-12-18 | 1966-11-15 | Shell Oil Co | Apparatus for adjusting the amplitude and phase of pickup coils of eddy current instruments |
US3450986A (en) * | 1966-04-06 | 1969-06-17 | Bell Inc F W | Magnetic reaction testing apparatus and method of testing utilizing semiconductor means for magnetic field sensing of an eddy-current-reaction magnetic field |
US3535625A (en) * | 1968-04-22 | 1970-10-20 | Garrett Corp | Strain and flaw detector |
US3763424A (en) * | 1971-07-15 | 1973-10-02 | Sperry Rand Corp | Metal detector for identifying and discriminating between objects of different size, shape, orientation and ferrous content and including an auto nulling circuit |
US3916301A (en) * | 1974-05-20 | 1975-10-28 | Republic Steel Corp | Magnetic flaw detection apparatus |
GB1586581A (en) * | 1977-01-26 | 1981-03-18 | British Gas Corp | Pipeline inspection equipment |
FR2451032A1 (fr) * | 1979-03-09 | 1980-10-03 | Commissariat Energie Atomique | Appareil numerique pour le controle de pieces par courants de foucault |
US4467281A (en) * | 1980-02-29 | 1984-08-21 | Electric Power Research Institute, Inc. | Multi frequency eddy current test apparatus with intermediate frequency processing |
FR2540630B1 (fr) * | 1983-02-08 | 1985-08-09 | Commissariat Energie Atomique | Sonde multibobines a courants de foucault munie d'un dispositif d'equilibrage des bobines |
FR2541772B1 (fr) * | 1983-02-24 | 1985-06-14 | Aerospatiale | Procede et dispositif pour l'examen non destructif de jonctions rivetees ou analogues au moyen d'une sonde a courants de foucault |
US4594549A (en) * | 1984-05-11 | 1986-06-10 | United Technologies Corporation | Uniform field generating eddy current testing processing method and apparatus |
-
1984
- 1984-09-20 FR FR8414435A patent/FR2570501B1/fr not_active Expired
-
1985
- 1985-09-20 BR BR8506935A patent/BR8506935A/pt not_active IP Right Cessation
- 1985-09-20 JP JP60504200A patent/JPH0772729B2/ja not_active Expired - Fee Related
- 1985-09-20 KR KR1019860700283A patent/KR920010293B1/ko not_active IP Right Cessation
- 1985-09-20 CA CA000491191A patent/CA1250021A/fr not_active Expired
- 1985-09-20 EP EP85904643A patent/EP0195794B1/de not_active Expired - Lifetime
- 1985-09-20 US US06/876,854 patent/US4799010A/en not_active Expired - Lifetime
- 1985-09-20 DE DE8585904643T patent/DE3580357D1/de not_active Expired - Lifetime
- 1985-09-20 AU AU48645/85A patent/AU586193B2/en not_active Ceased
- 1985-09-20 WO PCT/FR1985/000258 patent/WO1986001896A1/fr active IP Right Grant
- 1985-09-20 ES ES547160A patent/ES8702657A1/es not_active Expired
Also Published As
Publication number | Publication date |
---|---|
BR8506935A (pt) | 1986-12-23 |
JPH0772729B2 (ja) | 1995-08-02 |
WO1986001896A1 (fr) | 1986-03-27 |
AU586193B2 (en) | 1989-07-06 |
JPS62500683A (ja) | 1987-03-19 |
EP0195794B1 (de) | 1990-10-31 |
CA1250021A (fr) | 1989-02-14 |
FR2570501A1 (fr) | 1986-03-21 |
FR2570501B1 (fr) | 1987-12-18 |
US4799010A (en) | 1989-01-17 |
ES547160A0 (es) | 1987-01-01 |
KR880700267A (ko) | 1988-02-22 |
KR920010293B1 (ko) | 1992-11-21 |
ES8702657A1 (es) | 1987-01-01 |
AU4864585A (en) | 1986-04-08 |
EP0195794A1 (de) | 1986-10-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |