DE3773910D1 - Verfahren zum feststellen der variationen der wandstaerke eines elektrisch leitenden koerpers. - Google Patents

Verfahren zum feststellen der variationen der wandstaerke eines elektrisch leitenden koerpers.

Info

Publication number
DE3773910D1
DE3773910D1 DE8787907296T DE3773910T DE3773910D1 DE 3773910 D1 DE3773910 D1 DE 3773910D1 DE 8787907296 T DE8787907296 T DE 8787907296T DE 3773910 T DE3773910 T DE 3773910T DE 3773910 D1 DE3773910 D1 DE 3773910D1
Authority
DE
Germany
Prior art keywords
pct
amplifier
current
variations
determining
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
Application number
DE8787907296T
Other languages
English (en)
Inventor
Alain Charoy
Jacques Vermot-Gaud
Jean-Louis Prost
Michel Kormann
Dieter Gold
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.)
Battelle Memorial Institute Inc
Original Assignee
Battelle Memorial Institute Inc
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 Battelle Memorial Institute Inc filed Critical Battelle Memorial Institute Inc
Application granted granted Critical
Publication of DE3773910D1 publication Critical patent/DE3773910D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
    • G01B7/06—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness
    • G01B7/10—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness using magnetic means, e.g. by measuring change of reluctance
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
    • G01B7/06—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness
    • G01B7/10—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness using magnetic means, e.g. by measuring change of reluctance
    • G01B7/105—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness using magnetic means, e.g. by measuring change of reluctance for measuring thickness of coating
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/34—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring roughness or irregularity of surfaces

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (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)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
  • Non-Insulated Conductors (AREA)
DE8787907296T 1986-11-25 1987-11-18 Verfahren zum feststellen der variationen der wandstaerke eines elektrisch leitenden koerpers. Expired - Lifetime DE3773910D1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH4710/86A CH670504A5 (de) 1986-11-25 1986-11-25
PCT/CH1987/000153 WO1988004028A1 (fr) 1986-11-25 1987-11-18 Procede pour detecter des variations d'epaisseur dans la paroi d'un corps tubulaire conducteur de l'electricite

Publications (1)

Publication Number Publication Date
DE3773910D1 true DE3773910D1 (de) 1991-11-21

Family

ID=4281161

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8787907296T Expired - Lifetime DE3773910D1 (de) 1986-11-25 1987-11-18 Verfahren zum feststellen der variationen der wandstaerke eines elektrisch leitenden koerpers.

Country Status (8)

Country Link
US (1) US4947132A (de)
EP (1) EP0290513B1 (de)
JP (1) JPH0781811B2 (de)
AT (1) ATE68590T1 (de)
CA (1) CA1299242C (de)
CH (1) CH670504A5 (de)
DE (1) DE3773910D1 (de)
WO (1) WO1988004028A1 (de)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6031381A (en) * 1986-11-04 2000-02-29 Paramagnetic Logging, Inc. Electrical voltages and resistances measured to inspect metallic cased wells and pipelines
JP2896794B2 (ja) * 1988-09-30 1999-05-31 キヤノン株式会社 走査型トンネル電流検出装置，走査型トンネル顕微鏡，及び記録再生装置
US5220555A (en) * 1988-09-30 1993-06-15 Canon Kabushiki Kaisha Scanning tunnel-current-detecting device and method for detecting tunnel current and scanning tunnelling microscope and recording/reproducing device using thereof
DE4310893C2 (de) * 1993-04-02 1995-05-04 Bosch Gmbh Robert Verfahren und Prüfsonde zum zerstörungsfreien Prüfen der Oberflächen elektrisch leitfähiger Werkstoffe
FR2707109B1 (fr) * 1993-06-30 1995-09-01 Pont A Mousson Dispositif et procédé de mesure sans contact de revêtements internes de tuyaux de fonte.
US5639959A (en) * 1993-09-24 1997-06-17 Reiber; Harold Steven Corrosion measurement apparatus and galvanic coupon and gasket therefor
GB2289338A (en) * 1994-04-12 1995-11-15 Unvala Ltd Alternating current potential drop measurement
DE19819066A1 (de) * 1998-04-29 1999-11-11 F I T Messtechnik Gmbh Prüfverfahren zur berührungslosen Erkennung von Ungleichmäßigkeiten in der Wanddicke von unzugänglichen metallischen Rohren
SE9803506D0 (sv) * 1998-10-11 1998-10-11 Tyren Carl Method for measuring cross-section geometry based on AC signal skin-depth penetration
DE102004053021A1 (de) * 2004-11-03 2006-05-04 Nexans Verfahren zur Ermittlung der Wanddicke eines Metallrohres
CN101398369A (zh) * 2007-09-30 2009-04-01 通用电气公司 监测表面腐蚀的设备和方法
US8248088B2 (en) * 2010-02-08 2012-08-21 John Murray Spruth Remote monitor for corrosion protection of pipelines and structures
GB2498207A (en) * 2012-01-06 2013-07-10 Teledyne Ltd Monitoring a conductive fluid conduit
JP6007923B2 (ja) * 2014-01-22 2016-10-19 横河電機株式会社 減肉検出装置
WO2017127829A1 (en) * 2016-01-21 2017-07-27 Quest Integrated, Llc Excitation and sensing systems and methods for detecting corrosion under insulation
CN108802110B (zh) * 2018-05-31 2021-06-22 广东联城住工装备信息科技有限公司 用于测量灌浆套筒灌浆密实度的检测装置及其检测方法
CN116734710B (zh) * 2023-08-09 2023-10-27 陕西省外经贸建设集团有限公司 一种房屋建筑墙面施工平整度测量装置

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE148445C (de) * 1900-01-01
US2124577A (en) * 1932-01-30 1938-07-26 Steel & Tubes Inc Method and apparatus for testing metal articles for defects
US2593175A (en) * 1947-07-08 1952-04-15 Technology Instr Corp Electric method and system for measuring impedance magnitude and phase angle
GB840552A (en) * 1956-11-20 1960-07-06 British Insulated Callenders Improvements in or relating to the measurement of wall thickness of metallic articles
GB952106A (en) * 1961-04-28 1964-03-11 British Insulated Callenders Improvements in or relating to methods of and apparatus for measuring the wall thickness of tubular bodies
JPS502593B1 (de) * 1969-02-22 1975-01-28
US3786349A (en) * 1973-05-03 1974-01-15 Northern Electric Co Electrical reactance and loss measurement apparatus and method
FR2287693A1 (fr) * 1974-10-11 1976-05-07 Siderurgie Fse Inst Rech Procede et dispositif de detection de la fissuration dans une eprouvette
US4048558A (en) * 1975-08-06 1977-09-13 Clark Goodman Method and apparatus for detecting metal failures in situ
US4189778A (en) * 1977-10-31 1980-02-19 Uriel Vogel Method and instrumentation for the measurement of parameters of system devices
GB8415747D0 (en) * 1984-06-20 1984-07-25 Secr Defence Alternating current potential drops
DE3434801A1 (de) * 1984-09-21 1986-04-03 INTERATOM GmbH, 5060 Bergisch Gladbach Verfahren und vorrichtungen zur materialpruefung durch messung von elektrischer leistungsdichte-, stromdichte- oder spannungsverteilung an einem stromdurchflossenen bauteil
EP0175257A2 (de) * 1984-09-21 1986-03-26 INTERATOM Gesellschaft mit beschränkter Haftung Verfahren zur Strukturüberwachung durch Messen elektrischer Grössen und Vorrichtung sowie Messkopf zur Durchfürung der Verfahrens

Also Published As

Publication number Publication date
CA1299242C (fr) 1992-04-21
ATE68590T1 (de) 1991-11-15
US4947132A (en) 1990-08-07
JPH0781811B2 (ja) 1995-09-06
WO1988004028A1 (fr) 1988-06-02
EP0290513A1 (de) 1988-11-17
EP0290513B1 (de) 1991-10-16
JPH01501419A (ja) 1989-05-18
CH670504A5 (de) 1989-06-15

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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