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GB2012966A - Apparatus for non-destructive testing of elongate objects - Google Patents

Apparatus for non-destructive testing of elongate objects

Info

Publication number
GB2012966A
GB2012966A GB7850374A GB7850374A GB2012966A GB 2012966 A GB2012966 A GB 2012966A GB 7850374 A GB7850374 A GB 7850374A GB 7850374 A GB7850374 A GB 7850374A GB 2012966 A GB2012966 A GB 2012966A
Authority
GB
United Kingdom
Prior art keywords
hall effect
pole pieces
effect sensors
magnetising
destructive testing
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.)
Withdrawn
Application number
GB7850374A
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.)
HEALTH AND SAFETY EXECUTIVE
Original Assignee
HEALTH AND SAFETY EXECUTIVE
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 HEALTH AND SAFETY EXECUTIVE filed Critical HEALTH AND SAFETY EXECUTIVE
Priority to GB7850374A priority Critical patent/GB2012966A/en
Publication of GB2012966A publication Critical patent/GB2012966A/en
Withdrawn legal-status Critical Current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
    • 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
    • G01N27/9006—Details, e.g. in the structure or functioning of 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)

Abstract

Apparatus of the above kind includes magnetising means 1, 2 having pole pieces 6 arranged to surround and to provide a constant magnetising force along a length of the elongated object 5 e.g. a wire rope longitudinally of its axis and magnetic sensor means 7 e.g. Hall effect sensors under the pole pieces in air gaps 8 for measuring the magnetic field coupled into the object to provide by comparison with the level associated with the known object in good condition an indication of the condition i.e. cross-sectional area of the used object. To detect broken wires a sensor collar 23 is mounted around wire 5 which supports radial and longitudinally arranged Hall effect sensors. <IMAGE>
GB7850374A 1977-10-06 1978-12-29 Apparatus for non-destructive testing of elongate objects Withdrawn GB2012966A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7850374A GB2012966A (en) 1977-10-06 1978-12-29 Apparatus for non-destructive testing of elongate objects

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB4153077 1977-10-06
GB7850374A GB2012966A (en) 1977-10-06 1978-12-29 Apparatus for non-destructive testing of elongate objects

Publications (1)

Publication Number Publication Date
GB2012966A true GB2012966A (en) 1979-08-01

Family

ID=26264695

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7850374A Withdrawn GB2012966A (en) 1977-10-06 1978-12-29 Apparatus for non-destructive testing of elongate objects

Country Status (1)

Country Link
GB (1) GB2012966A (en)

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0027368A3 (en) * 1979-10-15 1982-04-07 Commonwealth Scientific And Industrial Research Organization Method, apparatus and instrument for monitoring elongate magnetically permeable members
GB2124778A (en) * 1982-08-04 1984-02-22 Pa Inc Method and apparatus for magnetically checking the wall thickness of a ferromagnetic element
US4503393A (en) * 1981-10-05 1985-03-05 Exxon Production Research Co. Method and apparatus for detecting flaws in the threaded end of an elongate member using electromagnetic excitation and an automated scanning sensor
US4510447A (en) * 1981-10-26 1985-04-09 Exxon Production Research Co. Inspection apparatus for electromagnetically detecting flaws in the wall of a pipe
US4518919A (en) * 1981-01-16 1985-05-21 Tokyo Shibaura Denki Kabushiki Kaisha Detecting device for detecting a magnetic strip embedded in a sheet
EP0121084A3 (en) * 1983-03-31 1985-06-26 Ndt Technologies, Inc. Magnetic inspection device
DE3346774A1 (en) * 1983-12-23 1985-07-04 Institut Gornoj Mechaniki imeni G.A. Zulukidze, Akademii nauk Gruzinskoj SSR, Tbilisi Defectoscope for testing elongated ferromagnetic workpieces and circuit arrangement for evaluating the output signals of the defectoscope
FR2575291A1 (en) * 1984-12-21 1986-06-27 Nukem Gmbh DEVICE FOR NON-DESTRUCTIVE CONTROL OF FERROMAGNETIC BODIES AND METHOD FOR OBTAINING VALUES FOR THE ADJUSTMENT OF THIS DEVICE IN A STARTING SITUATION FOR CONTROL IN ACCORDANCE WITH DIFFERENT CONTROL SYMBOLS
WO1987005112A1 (en) * 1986-02-17 1987-08-27 Julius Hartai Method and apparatus for non-destructive materials testing and magnetostructural materials investigations
GB2203549A (en) * 1987-04-15 1988-10-19 Julian Marsden Carroll Metal corrosion detection
GB2206969A (en) * 1987-06-25 1989-01-18 Coal Ind Non-destructive magnetic testing device
EP0193168A3 (en) * 1985-02-25 1989-01-25 Kubota Limited Method of inspecting carburization and probe therefor
US4827215A (en) * 1986-03-25 1989-05-02 Crucible, Societe Anonyme Method of and apparatus for magnetic saturation testing a wire rope for defects
FR2623614A1 (en) * 1987-11-23 1989-05-26 Anglo Amer Corp South Africa METHOD AND DEVICE FOR DETECTING VARIATIONS OF SECTIONS IN A LARGE OBJECT, IN PARTICULAR A CABLE
FR2623613A1 (en) * 1987-11-23 1989-05-26 Anglo Amer Corp South Africa METHOD AND DEVICE FOR DETECTING VARIATIONS OF SECTIONS IN A LARGE OBJECT, IN PARTICULAR A CABLE
CH673896A5 (en) * 1988-01-28 1990-04-12 Asea Brown Boveri Non-destructive eddy-current tester - has pairs of coils excited and sampled by multiplexer in clock circuit pre-programmed for computerised scanning of flexible test mat
US5198765A (en) * 1990-11-07 1993-03-30 Walt Nicolaas T Van Der Method of and apparatus for simultaneously testing a wire rope for multiple defects
GB2268270A (en) * 1992-06-20 1994-01-05 Smith S B Determining temperature of a ferrous metal object
US5426362A (en) * 1992-09-30 1995-06-20 Ninnis; Ronald M. Damage detection apparatus and method for a conveyor belt having magnetically permeable members
GB2297168A (en) * 1995-01-18 1996-07-24 Noranda Inc Improvements in linear resolution of electromagnetic wire rope testing instruments
EP0816797A3 (en) * 1996-06-28 1998-02-11 Tokyo Rope Mfg. Co., Ltd. Apparatus for and method of measuring corrosion degree of cable
US7268541B2 (en) 2003-06-25 2007-09-11 Esr Technology Limited Detecting failures of flexible multistrand steel structures
EP1676806A4 (en) * 2003-11-21 2008-02-27 Toshiba Elevator Kk Wire rope flaw detector for elevator
EP2506003A1 (en) * 2011-03-29 2012-10-03 Silverwing (U.K.) Ltd Methods And Apparatus For The Inspection Of Plates And Pipe Walls
DE102014103684A1 (en) * 2014-03-18 2015-09-24 Sensitec Gmbh Magnetic field sensor arrangement
US10155645B2 (en) 2013-11-12 2018-12-18 Konecranes Global Corporation Monitoring condition of elongated ferrous object having a longitudinal axis

Cited By (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0027368A3 (en) * 1979-10-15 1982-04-07 Commonwealth Scientific And Industrial Research Organization Method, apparatus and instrument for monitoring elongate magnetically permeable members
US4518919A (en) * 1981-01-16 1985-05-21 Tokyo Shibaura Denki Kabushiki Kaisha Detecting device for detecting a magnetic strip embedded in a sheet
US4503393A (en) * 1981-10-05 1985-03-05 Exxon Production Research Co. Method and apparatus for detecting flaws in the threaded end of an elongate member using electromagnetic excitation and an automated scanning sensor
US4510447A (en) * 1981-10-26 1985-04-09 Exxon Production Research Co. Inspection apparatus for electromagnetically detecting flaws in the wall of a pipe
GB2124778A (en) * 1982-08-04 1984-02-22 Pa Inc Method and apparatus for magnetically checking the wall thickness of a ferromagnetic element
EP0121084A3 (en) * 1983-03-31 1985-06-26 Ndt Technologies, Inc. Magnetic inspection device
DE3346774A1 (en) * 1983-12-23 1985-07-04 Institut Gornoj Mechaniki imeni G.A. Zulukidze, Akademii nauk Gruzinskoj SSR, Tbilisi Defectoscope for testing elongated ferromagnetic workpieces and circuit arrangement for evaluating the output signals of the defectoscope
FR2575291A1 (en) * 1984-12-21 1986-06-27 Nukem Gmbh DEVICE FOR NON-DESTRUCTIVE CONTROL OF FERROMAGNETIC BODIES AND METHOD FOR OBTAINING VALUES FOR THE ADJUSTMENT OF THIS DEVICE IN A STARTING SITUATION FOR CONTROL IN ACCORDANCE WITH DIFFERENT CONTROL SYMBOLS
US5128613A (en) * 1985-02-25 1992-07-07 Kubota Ltd. Method of inspecting magnetic carburization in a non-permeable material and probe therefore
EP0193168A3 (en) * 1985-02-25 1989-01-25 Kubota Limited Method of inspecting carburization and probe therefor
US4931730A (en) * 1986-02-17 1990-06-05 Dam Patent A/S Method and apparatus for non-destructive materials testing and magnetostructural materials investigations
WO1987005112A1 (en) * 1986-02-17 1987-08-27 Julius Hartai Method and apparatus for non-destructive materials testing and magnetostructural materials investigations
US4827215A (en) * 1986-03-25 1989-05-02 Crucible, Societe Anonyme Method of and apparatus for magnetic saturation testing a wire rope for defects
GB2203549A (en) * 1987-04-15 1988-10-19 Julian Marsden Carroll Metal corrosion detection
GB2203549B (en) * 1987-04-15 1991-05-01 Julian Marsden Carroll Metal corrosion detection
GB2206969A (en) * 1987-06-25 1989-01-18 Coal Ind Non-destructive magnetic testing device
FR2623613A1 (en) * 1987-11-23 1989-05-26 Anglo Amer Corp South Africa METHOD AND DEVICE FOR DETECTING VARIATIONS OF SECTIONS IN A LARGE OBJECT, IN PARTICULAR A CABLE
GB2212617A (en) * 1987-11-23 1989-07-26 Anglo Amer Corp South Africa Detection of cross-sectional area variations in elongate objects
US4929897A (en) * 1987-11-23 1990-05-29 Crucible Societe Anonyme Method and apparatus for detecting cross sectional area variations in a elongate object by measuring radial magnetic flux variations using spaced-apart coils
FR2623614A1 (en) * 1987-11-23 1989-05-26 Anglo Amer Corp South Africa METHOD AND DEVICE FOR DETECTING VARIATIONS OF SECTIONS IN A LARGE OBJECT, IN PARTICULAR A CABLE
GB2212617B (en) * 1987-11-23 1992-04-08 Anglo Amer Corp South Africa Detection of cross sectional area variations in a wire rope
CH673896A5 (en) * 1988-01-28 1990-04-12 Asea Brown Boveri Non-destructive eddy-current tester - has pairs of coils excited and sampled by multiplexer in clock circuit pre-programmed for computerised scanning of flexible test mat
US5198765A (en) * 1990-11-07 1993-03-30 Walt Nicolaas T Van Der Method of and apparatus for simultaneously testing a wire rope for multiple defects
GB2268270A (en) * 1992-06-20 1994-01-05 Smith S B Determining temperature of a ferrous metal object
US5426362A (en) * 1992-09-30 1995-06-20 Ninnis; Ronald M. Damage detection apparatus and method for a conveyor belt having magnetically permeable members
GB2297168A (en) * 1995-01-18 1996-07-24 Noranda Inc Improvements in linear resolution of electromagnetic wire rope testing instruments
DE19601707A1 (en) * 1995-01-18 1996-07-25 Noranda Inc Improvement of the linear resolution of electromagnetic instruments for testing a wire rope
DE19601707C2 (en) * 1995-01-18 1998-04-16 Noranda Inc Method and device for non-destructive testing of a wire rope
GB2297168B (en) * 1995-01-18 1998-08-26 Noranda Inc Improvements in linear resolution of electromagnetic wire rope testing instruments
EP0816797A3 (en) * 1996-06-28 1998-02-11 Tokyo Rope Mfg. Co., Ltd. Apparatus for and method of measuring corrosion degree of cable
US6172501B1 (en) 1996-06-28 2001-01-09 Tokyo Rope Mfg. Co., Ltd. Method and apparatus for measuring the degree of cable corrosion
US7268541B2 (en) 2003-06-25 2007-09-11 Esr Technology Limited Detecting failures of flexible multistrand steel structures
EP1676806A4 (en) * 2003-11-21 2008-02-27 Toshiba Elevator Kk Wire rope flaw detector for elevator
EP2506003A1 (en) * 2011-03-29 2012-10-03 Silverwing (U.K.) Ltd Methods And Apparatus For The Inspection Of Plates And Pipe Walls
US10155645B2 (en) 2013-11-12 2018-12-18 Konecranes Global Corporation Monitoring condition of elongated ferrous object having a longitudinal axis
DE102014103684A1 (en) * 2014-03-18 2015-09-24 Sensitec Gmbh Magnetic field sensor arrangement
WO2015140220A1 (en) * 2014-03-18 2015-09-24 Sensitec Gmbh Magnetic field sensor arrangement

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)