WO2006113504A3 - Near fieldtm and combination near fieldtm - remote field electromagnetic testing (et) probes for inspecting ferromagnetic pipes and tubes such as those used in heat exchangers - Google Patents

Near fieldtm and combination near fieldtm - remote field electromagnetic testing (et) probes for inspecting ferromagnetic pipes and tubes such as those used in heat exchangers Download PDF

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Publication number
WO2006113504A3
WO2006113504A3 PCT/US2006/014206 US2006014206W WO2006113504A3 WO 2006113504 A3 WO2006113504 A3 WO 2006113504A3 US 2006014206 W US2006014206 W US 2006014206W WO 2006113504 A3 WO2006113504 A3 WO 2006113504A3
Authority
WO
WIPO (PCT)
Prior art keywords
fieldtm
tubes
remote field
probes
combination
Prior art date
Application number
PCT/US2006/014206
Other languages
French (fr)
Other versions
WO2006113504A2 (en
Inventor
Henry Moncrieff O'connor
Original Assignee
Henry Moncrieff O'connor
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 Henry Moncrieff O'connor filed Critical Henry Moncrieff O'connor
Priority to EP06758357A priority Critical patent/EP1877767A2/en
Publication of WO2006113504A2 publication Critical patent/WO2006113504A2/en
Publication of WO2006113504A3 publication Critical patent/WO2006113504A3/en

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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
    • 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

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)

Abstract

Ferromagnetic pipes and tubes are inspected for flaws by inserting probes having a near field sensor comprising at least one send coil (50) and at least one receive coil (52) which are located directly adjacent one another. According to various configurations, the send and receive coils (50,52) are of the same or different diameters or are positioned axially adjacent one another. Configurations of the near field sensor include arrangements wherein there are pluralities of send coils (50) as well as pluralities of receive coils (52). The near field sensor is in one embodiment in combination with remote field sensor coils and in another embodiment in combination with a remote field sensor and a remote field receive coil.
PCT/US2006/014206 2005-04-14 2006-04-14 Near fieldtm and combination near fieldtm - remote field electromagnetic testing (et) probes for inspecting ferromagnetic pipes and tubes such as those used in heat exchangers WO2006113504A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP06758357A EP1877767A2 (en) 2005-04-14 2006-04-14 Near fieldtm and combination near fieldtm - remote field electromagnetic testing (et) probes for inspecting ferromagnetic pipes and tubes such as those used in heat exchangers

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US67110605P 2005-04-14 2005-04-14
US60/671,106 2005-04-14

Publications (2)

Publication Number Publication Date
WO2006113504A2 WO2006113504A2 (en) 2006-10-26
WO2006113504A3 true WO2006113504A3 (en) 2007-03-08

Family

ID=37115754

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2006/014206 WO2006113504A2 (en) 2005-04-14 2006-04-14 Near fieldtm and combination near fieldtm - remote field electromagnetic testing (et) probes for inspecting ferromagnetic pipes and tubes such as those used in heat exchangers

Country Status (2)

Country Link
EP (1) EP1877767A2 (en)
WO (1) WO2006113504A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0813914D0 (en) * 2008-07-30 2008-09-03 Innospection Holdings Ltd Inspection apparatus and method
GB2475314B8 (en) 2009-11-16 2013-09-25 Innospection Group Ltd Remote environment inspection apparatus and method
JP5800696B2 (en) * 2011-11-30 2015-10-28 日立交通テクノロジー株式会社 Remote field eddy current flaw detection system and remote field eddy current flaw detection method
GB2537124B (en) 2015-04-07 2018-09-05 Innospection Group Ltd In-line inspection tool

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3875502A (en) * 1973-05-24 1975-04-01 Foerster Inst Dr Friedrich Coil arrangement and circuit for eddy current testing
US4079312A (en) * 1976-08-17 1978-03-14 Allegheny Ludlum Industries, Inc. Continuous testing method and apparatus for determining the magnetic characteristics of a strip of moving material, including flux inducing and pick-up device therefor
US4608534A (en) * 1982-10-22 1986-08-26 Canadian Patents & Development Limited Eddy current probe for detecting localized defects in cylindrical components
US5623203A (en) * 1994-08-01 1997-04-22 Tokyo Gas Co., Ltd. Remote field flaw sensor including an energizing coil, first and second receiving coil groups oriented perpendicular and a third receiving coil oriented parallel to pipe

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3875502A (en) * 1973-05-24 1975-04-01 Foerster Inst Dr Friedrich Coil arrangement and circuit for eddy current testing
US4079312A (en) * 1976-08-17 1978-03-14 Allegheny Ludlum Industries, Inc. Continuous testing method and apparatus for determining the magnetic characteristics of a strip of moving material, including flux inducing and pick-up device therefor
US4608534A (en) * 1982-10-22 1986-08-26 Canadian Patents & Development Limited Eddy current probe for detecting localized defects in cylindrical components
US5623203A (en) * 1994-08-01 1997-04-22 Tokyo Gas Co., Ltd. Remote field flaw sensor including an energizing coil, first and second receiving coil groups oriented perpendicular and a third receiving coil oriented parallel to pipe

Also Published As

Publication number Publication date
EP1877767A2 (en) 2008-01-16
WO2006113504A2 (en) 2006-10-26

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