GB766353A - Improvements in and relating to non-destructive testing of ferromagnetic workpieces - Google Patents

Improvements in and relating to non-destructive testing of ferromagnetic workpieces

Info

Publication number
GB766353A
GB766353A GB11204/54A GB1120454A GB766353A GB 766353 A GB766353 A GB 766353A GB 11204/54 A GB11204/54 A GB 11204/54A GB 1120454 A GB1120454 A GB 1120454A GB 766353 A GB766353 A GB 766353A
Authority
GB
United Kingdom
Prior art keywords
relating
destructive testing
april
pick
coil
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
GB11204/54A
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.)
Kronprinz GmbH
Original Assignee
Kronprinz GmbH
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 Kronprinz GmbH filed Critical Kronprinz GmbH
Publication of GB766353A publication Critical patent/GB766353A/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

Abstract

766,353. Electric tests. KRONPRINZ AKT.-GES. April 15, 1954 [April 15, 1953], No. 11204/54. Class 37. Apparatus for testing ferromagnetic tubing a for flaws &c. by means of an A.C. magnetizing winding b and a pick-up coil C is characterized in that the test is made in the presence of a strong local magnetic field produced by an electromagnet d energized with A.C. or D.C., whereby the permeability is so reduced that the pick-up signal in coil c is mainly due to eddy currents and therefore dependent on conductivity.
GB11204/54A 1953-04-15 1954-04-15 Improvements in and relating to non-destructive testing of ferromagnetic workpieces Expired GB766353A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE766353X 1953-04-15

Publications (1)

Publication Number Publication Date
GB766353A true GB766353A (en) 1957-01-23

Family

ID=6673336

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11204/54A Expired GB766353A (en) 1953-04-15 1954-04-15 Improvements in and relating to non-destructive testing of ferromagnetic workpieces

Country Status (1)

Country Link
GB (1) GB766353A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3328681A (en) * 1966-03-14 1967-06-27 American Mach & Foundry Electromagnetic flow detection apparatus with velocity compensation
US3952315A (en) * 1973-10-15 1976-04-20 Atomic Energy Of Canada Limited Eddy current discontinuity probe utilizing a permanent magnet bobbin with at least one A.C. energized coil mounted in a groove thereon
GB2204699A (en) * 1987-05-06 1988-11-16 Ca Atomic Energy Ltd Ferromagnetic eddy current probe
EP0705430A1 (en) * 1993-06-21 1996-04-10 Atlantic Richfield Company Magnetic and transient electromagnetic diffusion inspection method and apparatus

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3328681A (en) * 1966-03-14 1967-06-27 American Mach & Foundry Electromagnetic flow detection apparatus with velocity compensation
US3952315A (en) * 1973-10-15 1976-04-20 Atomic Energy Of Canada Limited Eddy current discontinuity probe utilizing a permanent magnet bobbin with at least one A.C. energized coil mounted in a groove thereon
GB2204699A (en) * 1987-05-06 1988-11-16 Ca Atomic Energy Ltd Ferromagnetic eddy current probe
GB2204699B (en) * 1987-05-06 1991-06-26 Ca Atomic Energy Ltd Ferromagnetic eddy current probe
EP0705430A1 (en) * 1993-06-21 1996-04-10 Atlantic Richfield Company Magnetic and transient electromagnetic diffusion inspection method and apparatus
EP0705430B1 (en) * 1993-06-21 2003-04-02 Phillips Petroleum Company Magnetic and transient electromagnetic diffusion inspection method and apparatus

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