WO2012021034A3 - Conductor thickness detecting device using a double core - Google Patents

Conductor thickness detecting device using a double core Download PDF

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Publication number
WO2012021034A3
WO2012021034A3 PCT/KR2011/005962 KR2011005962W WO2012021034A3 WO 2012021034 A3 WO2012021034 A3 WO 2012021034A3 KR 2011005962 W KR2011005962 W KR 2011005962W WO 2012021034 A3 WO2012021034 A3 WO 2012021034A3
Authority
WO
WIPO (PCT)
Prior art keywords
unit
double core
probe
insulator
duct
Prior art date
Application number
PCT/KR2011/005962
Other languages
French (fr)
Korean (ko)
Other versions
WO2012021034A2 (en
Inventor
박덕근
정용무
김흥회
Original Assignee
한국원자력연구원
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 한국원자력연구원 filed Critical 한국원자력연구원
Publication of WO2012021034A2 publication Critical patent/WO2012021034A2/en
Publication of WO2012021034A3 publication Critical patent/WO2012021034A3/en

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
    • 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
    • G01N17/04—Corrosion probes
    • 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
    • G01N27/9013—Arrangements for scanning
    • G01N27/902—Arrangements for scanning by moving the sensors

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Pathology (AREA)
  • Electrochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Ecology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Environmental Sciences (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

According to the present invention, a duct thinning detecting device using a double core is devised so as to evaluate corrosion or changes in thickness (thinning) caused by corrosion of a duct which is covered by an insulator, which is to say losses in the duct, from outside the insulator by using eddy currents by means of a differential probe having a double core without dismantling the insulator in non-destructive testing. More specifically, the present invention comprises: a probe unit having a double core, a drive coil and a differential Hall sensor; a pulse-generating unit which is connected to the probe unit and generates a wide-band pulse voltage that is applied to the drive coil; an amplification unit which is connected to the probe unit and amplifies a measurement signal induced in the Hall sensor; an A/D conversion unit which is connected to the amplification unit and converts the measurement signal to a digital signal; and a control unit which is adapted to control the probe unit, the pulse-generating unit, the amplification unit and the A/D conversion unit while at the same time storing and displaying the digital signal.
PCT/KR2011/005962 2010-08-12 2011-08-12 Conductor thickness detecting device using a double core WO2012021034A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020100077752A KR101254300B1 (en) 2010-08-12 2010-08-12 Apparatus for detecting thickness of the conductor using dual core
KR10-2010-0077752 2010-08-12

Publications (2)

Publication Number Publication Date
WO2012021034A2 WO2012021034A2 (en) 2012-02-16
WO2012021034A3 true WO2012021034A3 (en) 2012-05-10

Family

ID=45568078

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2011/005962 WO2012021034A2 (en) 2010-08-12 2011-08-12 Conductor thickness detecting device using a double core

Country Status (2)

Country Link
KR (1) KR101254300B1 (en)
WO (1) WO2012021034A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101601204B1 (en) * 2014-06-20 2016-03-09 한국원자력연구원 Apparatus and method for thinning pulse detection using eddy current probes
CN108709488B (en) * 2018-03-29 2020-08-07 清华大学 Multi-range double-probe device for measuring thickness of metal film
CN108961223B (en) * 2018-06-20 2020-08-18 西安交通大学 Dielectric function gradient insulation bimodal nondestructive testing method
CN112098316A (en) * 2019-06-18 2020-12-18 中国石油化工股份有限公司 Nonlinear compensation method and device for inductance probe

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0332048A2 (en) * 1988-03-11 1989-09-13 Westinghouse Electric Corporation Multiple coil eddy current probe and method of flaw detection
EP0819944A1 (en) * 1996-07-16 1998-01-21 Lucent Technologies Inc. Eddy current sensor
JP2001141698A (en) * 1999-11-09 2001-05-25 Cosmo Oil Co Ltd Method for judging hydrogen embrittlement
KR20010045270A (en) * 1999-11-04 2001-06-05 김덕중 Method and apparatus for detecting a leakge position in water pipes embedded in under ground
JP2003270214A (en) * 2002-03-15 2003-09-25 ▲高▼木 敏行 Method for eddy current flaw detection and flaw detection probe

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0332048A2 (en) * 1988-03-11 1989-09-13 Westinghouse Electric Corporation Multiple coil eddy current probe and method of flaw detection
EP0819944A1 (en) * 1996-07-16 1998-01-21 Lucent Technologies Inc. Eddy current sensor
KR20010045270A (en) * 1999-11-04 2001-06-05 김덕중 Method and apparatus for detecting a leakge position in water pipes embedded in under ground
JP2001141698A (en) * 1999-11-09 2001-05-25 Cosmo Oil Co Ltd Method for judging hydrogen embrittlement
JP2003270214A (en) * 2002-03-15 2003-09-25 ▲高▼木 敏行 Method for eddy current flaw detection and flaw detection probe

Also Published As

Publication number Publication date
WO2012021034A2 (en) 2012-02-16
KR101254300B1 (en) 2013-04-12
KR20120015566A (en) 2012-02-22

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