GB804323A - Improvements relating to the detection of surface cracks in electrically conducting materials - Google Patents

Improvements relating to the detection of surface cracks in electrically conducting materials

Info

Publication number
GB804323A
GB804323A GB218656A GB218656A GB804323A GB 804323 A GB804323 A GB 804323A GB 218656 A GB218656 A GB 218656A GB 218656 A GB218656 A GB 218656A GB 804323 A GB804323 A GB 804323A
Authority
GB
United Kingdom
Prior art keywords
detection
surface cracks
electrically conducting
improvements relating
conducting materials
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
GB218656A
Inventor
David Alec Parker
Samuel Lattimore
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co Ltd
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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Priority to GB218656A priority Critical patent/GB804323A/en
Publication of GB804323A publication Critical patent/GB804323A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N22/00—Investigating or analysing materials by the use of microwaves or radio waves, i.e. electromagnetic waves with a wavelength of one millimetre or more
    • G01N22/02—Investigating the presence of flaws

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material 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 Electric Means (AREA)

Abstract

804,323. Electric tests. BRITISH THOMSON-HOUSTON CO., Ltd. Jan. 23, 1957 [Jan. 23, 1956], No. 2186/56. Class 37. Surface cracks in a body are detected by feeding a high-frequency current through the body and detecting the change in H.F. potential which occurs between a pair of spaced probes moved over the surface when they are astride a crack. The electrodes may be connected to an amplifier and indicator. The H.F. may be applied by a further pair of probes which may be mounted on the same holder as the measuring probes so that all four are moved over the surface under test together.
GB218656A 1956-01-23 1956-01-23 Improvements relating to the detection of surface cracks in electrically conducting materials Expired GB804323A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB218656A GB804323A (en) 1956-01-23 1956-01-23 Improvements relating to the detection of surface cracks in electrically conducting materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB218656A GB804323A (en) 1956-01-23 1956-01-23 Improvements relating to the detection of surface cracks in electrically conducting materials

Publications (1)

Publication Number Publication Date
GB804323A true GB804323A (en) 1958-11-12

Family

ID=9735092

Family Applications (1)

Application Number Title Priority Date Filing Date
GB218656A Expired GB804323A (en) 1956-01-23 1956-01-23 Improvements relating to the detection of surface cracks in electrically conducting materials

Country Status (1)

Country Link
GB (1) GB804323A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4048558A (en) * 1975-08-06 1977-09-13 Clark Goodman Method and apparatus for detecting metal failures in situ
GB2161936A (en) * 1984-06-20 1986-01-22 Secr Defence Alternating current potential drop crack detection
EP0527404A1 (en) * 1991-07-31 1993-02-17 Hughes Aircraft Company Detection and ranging of material flaws using microwave transmission line reflectometry
US5864229A (en) * 1991-06-11 1999-01-26 Millstrong Limited Eddy current probe system and method for determining the midpoint and depth of a discontinuity
EP2270483A1 (en) 2009-07-03 2011-01-05 Roxar Flow Measurement As Method and device for monitoring a zone of metal

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4048558A (en) * 1975-08-06 1977-09-13 Clark Goodman Method and apparatus for detecting metal failures in situ
GB2161936A (en) * 1984-06-20 1986-01-22 Secr Defence Alternating current potential drop crack detection
US5864229A (en) * 1991-06-11 1999-01-26 Millstrong Limited Eddy current probe system and method for determining the midpoint and depth of a discontinuity
EP0527404A1 (en) * 1991-07-31 1993-02-17 Hughes Aircraft Company Detection and ranging of material flaws using microwave transmission line reflectometry
EP2270483A1 (en) 2009-07-03 2011-01-05 Roxar Flow Measurement As Method and device for monitoring a zone of metal

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