CA2005550A1 - Transient electromagnetic method for detecting irregularities on conductive containers - Google Patents

Transient electromagnetic method for detecting irregularities on conductive containers

Info

Publication number
CA2005550A1
CA2005550A1 CA2005550A CA2005550A CA2005550A1 CA 2005550 A1 CA2005550 A1 CA 2005550A1 CA 2005550 A CA2005550 A CA 2005550A CA 2005550 A CA2005550 A CA 2005550A CA 2005550 A1 CA2005550 A1 CA 2005550A1
Authority
CA
Canada
Prior art keywords
antenna
receiving
array
receiving antenna
transmitting antenna
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.)
Granted
Application number
CA2005550A
Other languages
French (fr)
Other versions
CA2005550C (en
Inventor
Brian R. Spies
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.)
Rontgen Technische Dienst BV
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2005550A1 publication Critical patent/CA2005550A1/en
Application granted granted Critical
Publication of CA2005550C publication Critical patent/CA2005550C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light

Abstract

A transient electromagnetic method far detecting irregularities on container walls by measuring wall thickness. The method utilizes a transmitting antenna and a separate receiving antenna arranged in a loop-loop configuration. The transmitting antenna induces current into the container wall and the receiving antenna and the receiver detect the decay of the induced current, which is then analyzed to detect wall thickness. A receiving antenna array of many receiving antennas is used to increase the spatial resolution. Simultaneous measurement of the induced current by the receiving antennas reduces noise that is coherent across the array.
Use of a noise antenna located so as to be unaffected by the transmitting antenna further reduces noise. The received signal from the receiving antenna array is displayed on a two-dimensional display in a spatial arrangement that corresponds to the spatial arrangement of the receiving antennas. The display can be scrolled over the time range of the received signals to produce a moving image, so that irregular areas can be more easily detected than with a static display.
CA002005550A 1988-12-29 1989-12-14 Transient electromagnetic method for detecting irregularities on conductive containers Expired - Lifetime CA2005550C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/291,632 1988-12-29
US07/291,632 US4929898A (en) 1987-12-17 1988-12-29 Transient electromagnetic method for detecting irregularities on conductive containers

Publications (2)

Publication Number Publication Date
CA2005550A1 true CA2005550A1 (en) 1990-06-29
CA2005550C CA2005550C (en) 2000-03-28

Family

ID=23121117

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002005550A Expired - Lifetime CA2005550C (en) 1988-12-29 1989-12-14 Transient electromagnetic method for detecting irregularities on conductive containers

Country Status (8)

Country Link
US (1) US4929898A (en)
EP (1) EP0376635B1 (en)
JP (1) JP3035596B2 (en)
AU (1) AU631832B2 (en)
CA (1) CA2005550C (en)
DE (1) DE68913179T2 (en)
HK (1) HK1005472A1 (en)
NO (1) NO302633B1 (en)

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US4906928A (en) * 1988-12-29 1990-03-06 Atlantic Richfield Company Transient electromagnetic apparatus with receiver having digitally controlled gain ranging amplifier for detecting irregularities on conductive containers
CA2005551C (en) * 1988-12-29 1999-08-31 Pedro F. Lara Transient electromagnetic method for detecting irregularities on conductive containers having variations in jacket thickness
US5881310A (en) * 1990-07-16 1999-03-09 Atlantic Richfield Company Method for executing an instruction where the memory locations for data, operation to be performed and storing of the result are indicated by pointers
US5233297A (en) * 1990-08-06 1993-08-03 Atlantic Richfield Company Transient electromagnetic method and apparatus for inspecting conductive objects utilizing sensors that move during inspection
US5504426A (en) * 1992-12-07 1996-04-02 Westinghouse Electric Corporation Check valve position indication system and method
EP0817974B1 (en) * 1995-03-14 2000-11-08 Profile Technologies, Inc. Reflectometry methods for insulated pipes
EP0885396A4 (en) 1996-02-27 2007-09-26 Profile Technologies Inc Pipe testing apparatus and method
US6291992B1 (en) * 1996-07-12 2001-09-18 Shell Oil Company Eddy current inspection technique
US6343140B1 (en) 1998-09-11 2002-01-29 Quid Technologies Llc Method and apparatus for shooting using biometric recognition
US6507662B1 (en) 1998-09-11 2003-01-14 Quid Technologies Llc Method and system for biometric recognition based on electric and/or magnetic properties
US6344741B1 (en) * 2000-06-20 2002-02-05 Her Majesty The Queen As Represented By The Minister Of National Defence In Right Of Canada Pulsed eddy current method for detection of corrosion in multilayer structures using the lift-off point of intersection
US6593737B2 (en) * 2000-08-24 2003-07-15 Shell Oil Company Method for measuring the wall thickness of an electrically conductive object
US6707296B2 (en) * 2000-08-24 2004-03-16 Shell Oil Company Method for detecting cracks in electrically conducting material
US7196529B2 (en) * 2003-05-06 2007-03-27 Profile Technologies, Inc. Systems and methods for testing conductive members employing electromagnetic back scattering
EP1629228B1 (en) * 2003-05-06 2017-08-16 WaveTrue, Inc. Method for non-destructively testing conductive members employing electromagnetic back scattering
US7642790B2 (en) * 2003-05-06 2010-01-05 Profile Technologies, Inc. Systems and methods for testing conductive members employing electromagnetic back scattering
US7005851B2 (en) * 2003-09-30 2006-02-28 General Electric Company Methods and apparatus for inspection utilizing pulsed eddy current
JP4886577B2 (en) * 2007-04-06 2012-02-29 新日本製鐵株式会社 Corrosion rate measuring sensor, apparatus, and corrosion rate measuring method
US8000936B2 (en) * 2008-11-10 2011-08-16 Saudi Arabian Oil Company Data analysis system for determining coating conditions of a buried pipeline
NL2002921C2 (en) * 2009-05-25 2010-11-30 Ntgen Tech Dienst B V R A METHOD OR NON-DESTRUCTIVELY TESTING, A SYSTEM AND A COMPUTER PROGRAM PRODUCT.
US20110163740A1 (en) * 2010-01-06 2011-07-07 Russell Nde Systems Inc. Blanket probe
JP5693404B2 (en) * 2011-07-08 2015-04-01 日置電機株式会社 Covered wire surface contamination detector
US20130132034A1 (en) * 2011-11-23 2013-05-23 Ge Aviation Systems Llc Method for prognosing a health problem of an apparatus
US10073058B2 (en) 2015-02-11 2018-09-11 Structural Integrity Associates Dynamic pulsed eddy current probe
US10895555B2 (en) 2015-03-30 2021-01-19 Structural Integrity Associates, Inc. System for in-line inspection using a dynamic pulsed eddy current probe and method thereof
US20160290974A1 (en) * 2015-03-31 2016-10-06 Mueller International, Llc Determination of pipe wall failure based on minimum pipe wall thickness
US9835592B2 (en) 2015-06-16 2017-12-05 Mueller International, Llc Determination of tuberculation in a fluid distribution system
US9880130B2 (en) 2015-12-15 2018-01-30 Eddyfi Ndt Inc. Pulsed eddy current testing with dual-purpose coils
US10067092B2 (en) 2015-12-18 2018-09-04 Mueller International, Llc Noisemaker for pipe systems
US10267774B2 (en) 2016-02-29 2019-04-23 Mueller International, Llc External noisemaker for pipe systems
US10746698B2 (en) * 2017-01-31 2020-08-18 Exxam Systems, LLC Eddy current pipeline inspection using swept frequency
US11726064B2 (en) 2020-07-22 2023-08-15 Mueller International Llc Acoustic pipe condition assessment using coherent averaging
US11609348B2 (en) 2020-12-29 2023-03-21 Mueller International, Llc High-resolution acoustic pipe condition assessment using in-bracket pipe excitation
JP7117050B1 (en) 2022-01-14 2022-08-12 株式会社レジナ Decorative board, furniture using the same, method for manufacturing decorative board, and method for manufacturing furniture

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DE1698481B1 (en) * 1963-02-18 1969-09-04 Claus Colani Device for examining a relatively homogeneous medium, possibly with a certain electrical conductivity
US3875502A (en) * 1973-05-24 1975-04-01 Foerster Inst Dr Friedrich Coil arrangement and circuit for eddy current testing
FR2360070A1 (en) * 1976-07-30 1978-02-24 Elf Aquitaine DEVICE FOR THE CONTROL OF CORROSION OF THE INTERNAL WALL OF A METAL ENCLOSURE
DE2915535A1 (en) * 1978-04-28 1979-11-08 N Proizv Ob Energia PROCEDURE AND EQUIPMENT FOR NON-DESTRUCTION-FREE TESTING OF PIPELINES
MA18895A1 (en) * 1979-07-09 1981-04-01 Cie Generale De Geophysique Sa METHOD AND DEVICE FOR GEOPHYSICAL PROSPECTION WITH TRANSIENT CURRENTS
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DE3034426A1 (en) * 1980-09-12 1982-03-25 Bundesrepublik Deutschland, vertreten durch den Bundesminister für Wirtschaft in Bonn, dieser vertreten durch den Präsidenten der Bundesanstalt für Materialprüfung (BAM), 1000 Berlin Pulse eddy current conducting material testing - using synchronised test head energising and signal processing circuit for non-destructive examination
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JPS60253966A (en) * 1984-05-31 1985-12-14 Shimadzu Corp Crt display method of eddy current flaw detection signal
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US4692701A (en) * 1984-12-13 1987-09-08 Factory Mutual Research Method of testing steam turbine rotors to determine if they should be retired because of embrittlement
IT1189660B (en) * 1986-04-11 1988-02-04 Fiat Auto Spa EQUIPMENT FOR DETECTING MICRO SURFACE DEFECTS OF A METALLIC PIECE
US4843319A (en) * 1987-12-17 1989-06-27 Atlantic Richfield Company Transient electromagnetic method for detecting corrosion on conductive containers having variations in jacket thickness
US4839593A (en) * 1987-12-17 1989-06-13 Atlantic Richfield Company Transient electromagnetic method for directly detecting corrosion on conductive containers
US4843320A (en) * 1987-12-17 1989-06-27 Atlantic Richfield Company Transient electromagnetic method for detecting corrosion on conductive containers

Also Published As

Publication number Publication date
NO302633B1 (en) 1998-03-30
US4929898A (en) 1990-05-29
EP0376635A2 (en) 1990-07-04
AU4736389A (en) 1990-07-05
CA2005550C (en) 2000-03-28
DE68913179D1 (en) 1994-03-24
AU631832B2 (en) 1992-12-10
EP0376635B1 (en) 1994-02-16
HK1005472A1 (en) 1999-01-08
JPH02269945A (en) 1990-11-05
DE68913179T2 (en) 1994-08-18
NO895275D0 (en) 1989-12-27
EP0376635A3 (en) 1991-02-06
NO895275L (en) 1990-07-02
JP3035596B2 (en) 2000-04-24

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Effective date: 20091214