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GB484664A - Testing apparatus for non-ferromagnetic metallic materials - Google Patents

Testing apparatus for non-ferromagnetic metallic materials

Info

Publication number
GB484664A
GB484664A GB3007636A GB3007636A GB484664A GB 484664 A GB484664 A GB 484664A GB 3007636 A GB3007636 A GB 3007636A GB 3007636 A GB3007636 A GB 3007636A GB 484664 A GB484664 A GB 484664A
Authority
GB
United Kingdom
Prior art keywords
meter
primary
iron core
ferromagnetic metallic
coil system
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
GB3007636A
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries 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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB3007636A priority Critical patent/GB484664A/en
Publication of GB484664A publication Critical patent/GB484664A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
    • G01B7/06—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness
    • G01B7/10—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness using magnetic means, e.g. by measuring change of reluctance

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)

Abstract

484,664. Magnetic tests. CLARK, W. J., LEWIS, J. G:, and IMPERIAL CHEMICAL INDUSTRIES, Ltd. Nov. 4, 1936, No. 30076. [Class 37] Non-ferromagnetic metallic material is tested, and its thickness, resistivity, or other physical property measured by associating it with a primary and balanced secondary coil system coaxially arranged on an iron core, the system being carried in a frame of insulation material and arranged so that the measurement is effected by unbalancing the coil system due to eddy current effects produced by the coil near the testpiece. The coils 3 ... 5 are mounted on an iron core 1, and the primary 4 is fed from source 8 through barretter lamps 9, meter 10 and current reducing resistor 11, the secondaries 3, 5 feeding a rectifier 12 and meter 13. One secondary winding may be slightly different from the other as regards number of turns, so that maximum sensitivity can be obtained by adjusting the position of the core 1. Before use, the meter is calibrated in respect of a standard of the same material as that under test. Specification. 425,586 is referred to.
GB3007636A 1936-11-04 1936-11-04 Testing apparatus for non-ferromagnetic metallic materials Expired GB484664A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3007636A GB484664A (en) 1936-11-04 1936-11-04 Testing apparatus for non-ferromagnetic metallic materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3007636A GB484664A (en) 1936-11-04 1936-11-04 Testing apparatus for non-ferromagnetic metallic materials

Publications (1)

Publication Number Publication Date
GB484664A true GB484664A (en) 1938-05-04

Family

ID=10301882

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3007636A Expired GB484664A (en) 1936-11-04 1936-11-04 Testing apparatus for non-ferromagnetic metallic materials

Country Status (1)

Country Link
GB (1) GB484664A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3061774A (en) * 1959-02-18 1962-10-30 Honeywell Regulator Co Electromagnetic metal detecting apparatus
US3986105A (en) * 1974-03-02 1976-10-12 Elektro-Physik, Hans Nix & Dr. -Ing. E. Steingroever Kg Dual purpose electromagnetic thickness gauge

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3061774A (en) * 1959-02-18 1962-10-30 Honeywell Regulator Co Electromagnetic metal detecting apparatus
US3986105A (en) * 1974-03-02 1976-10-12 Elektro-Physik, Hans Nix & Dr. -Ing. E. Steingroever Kg Dual purpose electromagnetic thickness gauge

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