GB435438A - Improvements in and relating to methods of testing ferromagnetic substances - Google Patents

Improvements in and relating to methods of testing ferromagnetic substances

Info

Publication number
GB435438A
GB435438A GB652/35A GB65235A GB435438A GB 435438 A GB435438 A GB 435438A GB 652/35 A GB652/35 A GB 652/35A GB 65235 A GB65235 A GB 65235A GB 435438 A GB435438 A GB 435438A
Authority
GB
United Kingdom
Prior art keywords
relating
methods
jan
axis
core
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
GB652/35A
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
Publication of GB435438A publication Critical patent/GB435438A/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

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

435,438. Magnetic tests. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwych, London. Jan. 8, 1935, No. 652. Convention date, Jan. 8, 1934. [Class 37] Lack of homogeneity in a magnetic body is tested by measuring the second differential of a stray field by rotating a core having as small a Barkehausen effect as possible within a stationary coil, the main axis of inertia or its gravitational axis coinciding with the axis of rotation. The core extremity is shaped as in Figs. 1a, 1b or 3 and may be made of an iron-nickel alloy, or of powdered magnetic material, and it can be laminated.
GB652/35A 1934-01-08 1935-01-08 Improvements in and relating to methods of testing ferromagnetic substances Expired GB435438A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE435438X 1934-01-08

Publications (1)

Publication Number Publication Date
GB435438A true GB435438A (en) 1935-09-20

Family

ID=6506767

Family Applications (1)

Application Number Title Priority Date Filing Date
GB652/35A Expired GB435438A (en) 1934-01-08 1935-01-08 Improvements in and relating to methods of testing ferromagnetic substances

Country Status (1)

Country Link
GB (1) GB435438A (en)

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