GB1341727A - Non-destructive testing - Google Patents

Non-destructive testing

Info

Publication number
GB1341727A
GB1341727A GB544871A GB1341727DA GB1341727A GB 1341727 A GB1341727 A GB 1341727A GB 544871 A GB544871 A GB 544871A GB 1341727D A GB1341727D A GB 1341727DA GB 1341727 A GB1341727 A GB 1341727A
Authority
GB
United Kingdom
Prior art keywords
conductor
pair
feb
coils
electrolyte
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
GB544871A
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.)
Electricity Council
Original Assignee
Electricity Council
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 Electricity Council filed Critical Electricity Council
Publication of GB1341727A publication Critical patent/GB1341727A/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
    • 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

1341727 Fault and flaw detectors ELECTRICITY COUNCIL 25 Feb 1972 [25 Feb 1971] 5448/71 Heading G1N Faults and flaws in conductive materials, e.g. corrosion in overhead electrical conductors or unwanted changes in constituents of an electrolyte, are detected using a pair of magnetic circuits 10, 12, each having an air gap 11, 13 for receiving a conductor 14 (or an insulating tube through which electrolyte is pumped), an R.F. generator 17 being provided to supply a pair of coils 15, 16 so coupled that the magnetic fields produced across the air gaps are in antiphase. In Fig. 2 (not shown), a pair of wheels are provided enabling the apparatus to be moved over a conductor. Impedance changes in the coils can be indicated on a meter, compared with a standard to provide a visible or audible alarm, or recorded on a chart recorder. A memory device may be provided which can be reset upon a change of direction of the apparatus over the conductor, by ratchets coupled to the wheels.
GB544871A 1971-02-25 1971-02-25 Non-destructive testing Expired GB1341727A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB544871 1971-02-25

Publications (1)

Publication Number Publication Date
GB1341727A true GB1341727A (en) 1973-12-25

Family

ID=9796382

Family Applications (1)

Application Number Title Priority Date Filing Date
GB544871A Expired GB1341727A (en) 1971-02-25 1971-02-25 Non-destructive testing

Country Status (1)

Country Link
GB (1) GB1341727A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3042781A1 (en) * 1979-11-30 1981-08-27 Karl-Heinz 7570 Baden-Baden Schmall ARRANGEMENT FOR COMPENSATING INTERFERING EMISSIONS OF ELECTROMAGNETIC HIGH-FREQUENCY VIBRATIONS IN CONTACTLESS SCANNER DEVICES

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3042781A1 (en) * 1979-11-30 1981-08-27 Karl-Heinz 7570 Baden-Baden Schmall ARRANGEMENT FOR COMPENSATING INTERFERING EMISSIONS OF ELECTROMAGNETIC HIGH-FREQUENCY VIBRATIONS IN CONTACTLESS SCANNER DEVICES

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees