CA1011816A - Flaw detector - Google Patents

Flaw detector

Info

Publication number
CA1011816A
CA1011816A CA214,935A CA214935A CA1011816A CA 1011816 A CA1011816 A CA 1011816A CA 214935 A CA214935 A CA 214935A CA 1011816 A CA1011816 A CA 1011816A
Authority
CA
Canada
Prior art keywords
flaw detector
flaw
detector
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
Application number
CA214,935A
Other languages
English (en)
Other versions
CA214935S (en
Inventor
Louis K. Bigelow (Jr.)
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.)
Kennecott Corp
Original Assignee
Kennecott Copper Corp
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 Kennecott Copper Corp filed Critical Kennecott Copper Corp
Application granted granted Critical
Publication of CA1011816A publication Critical patent/CA1011816A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/12—Measuring magnetic properties of articles or specimens of solids or fluids
    • 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

  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Condensed Matter Physics & Semiconductors (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)
CA214,935A 1974-01-07 1974-11-29 Flaw detector Expired CA1011816A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US431220A US3881151A (en) 1974-01-07 1974-01-07 Eddy current flaw detector comprising passing the test piece through an invarient magnetic field gradient and positioning sensor in the gradient

Publications (1)

Publication Number Publication Date
CA1011816A true CA1011816A (en) 1977-06-07

Family

ID=23711000

Family Applications (1)

Application Number Title Priority Date Filing Date
CA214,935A Expired CA1011816A (en) 1974-01-07 1974-11-29 Flaw detector

Country Status (8)

Country Link
US (1) US3881151A (xx)
JP (1) JPS5748738B2 (xx)
BE (1) BE824114A (xx)
CA (1) CA1011816A (xx)
DE (1) DE2500406A1 (xx)
FR (1) FR2303288A1 (xx)
GB (1) GB1476773A (xx)
SE (1) SE411150B (xx)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2817574B2 (de) * 1978-04-21 1980-04-30 Kraftwerk Union Ag, 4330 Muelheim Wirbelstrompriifsonde zur Untersuchung metallischer Werkstoffe auf Materialtrennungen und fehlerhafte Einschlüsse
US4926928A (en) * 1985-07-29 1990-05-22 Essex Group, Inc. Protective device of restraining rod produced in continuous casting and rolling process
ZA871964B (xx) * 1986-03-25 1987-09-07
US5036277A (en) * 1987-11-23 1991-07-30 Crucible Societe Anonyme Method of and apparatus for detecting cross sectional area variations in an elongate object by the non-inductive measurement of radial flux variations
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
GB2250097A (en) * 1990-11-07 1992-05-27 Anglo Amer Corp South Africa Testing wire rope for cross section variations and other flaws
DE4342602A1 (de) * 1993-12-14 1995-06-22 Busch Dieter & Co Prueftech Elektronisches Bauelement, inbesondere Spuleneinheit
US5986452A (en) * 1995-07-31 1999-11-16 Battelle Memorial Institute Apparatus and method for detecting flaws in conductive material
US6014024A (en) * 1995-07-31 2000-01-11 Battelle Memorial Institute Apparatus and method for detecting and/or measuring flaws in conductive material
US5777469A (en) * 1995-07-31 1998-07-07 Battelle Memorial Institute Method and apparatus for detecting flaws in conductive material
US8717012B2 (en) * 2011-04-28 2014-05-06 The United States of America as respresented by the United States National Aeronautics and Space Administration Eddy current probe for surface and sub-surface inspection
GB201416870D0 (en) * 2014-09-24 2014-11-05 Rota Eng Ltd Magnetic Field Generator And Position Sensing Assembly
RU2610931C1 (ru) * 2015-11-10 2017-02-17 Общество с ограниченной ответственностью "АльфаСервис" Способ вихретокового контроля электропроводящих объектов и устройство для его реализации
JP6791401B2 (ja) * 2017-10-30 2020-11-25 日本製鉄株式会社 長尺材の磁気特性変化部検出装置及び方法

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3273055A (en) * 1965-10-18 1966-09-13 Api Instr Company Constant impedance dual circuits for sample material flaw detection

Also Published As

Publication number Publication date
SE411150B (sv) 1979-12-03
FR2303288A1 (fr) 1976-10-01
DE2500406A1 (de) 1975-08-07
BE824114A (fr) 1975-07-07
JPS5748738B2 (xx) 1982-10-18
US3881151A (en) 1975-04-29
SE7415777L (xx) 1975-07-08
GB1476773A (en) 1977-06-16
FR2303288B1 (xx) 1978-06-23
JPS50102381A (xx) 1975-08-13

Similar Documents

Publication Publication Date Title
CA1032222A (en) Inspection apparatus
AU500162B2 (en) Focus detection
CA1004247A (en) Anti-jackknife apparatus
CA1035237A (en) Lung-venting apparatus
CA1011816A (en) Flaw detector
CA1019077A (en) Fire detector
CA1015950A (en) Spin-blast apparatus
AU467292B2 (en) Eye-bush
CA995661A (en) Freezing-warming apparatus
CA1018137A (en) Roll-winding apparatus
AU7986175A (en) Coulometric detector
CA1028002A (en) Time dependent fault detector
CA1019665A (en) Pack-forming apparatus
CA1023801A (en) Moisture detector
CA1035420A (en) Threshold detector
CA1027042A (en) Well apparatus
CA1022196A (en) Workpiece-handling apparatus
CA921556A (en) Flaw detector
GB1448307A (en) Gas detector
AU501742B2 (en) Flame detecting apparatus
SU590655A2 (ru) Электромагнитный преобразователь дл неразрушающего контрол ферромагнитных материалов
AU487370B2 (en) Object detection
AU493834B2 (en) Smoke detector
AU486093B2 (en) Signal detector arrangement
AU8498975A (en) Object detection