FR2378270A1 - Measurement of stress in ferromagnetic material - using electromagnetic collector, not in direct contact with material, with two prim. and two sec. windings - Google Patents

Measurement of stress in ferromagnetic material - using electromagnetic collector, not in direct contact with material, with two prim. and two sec. windings

Info

Publication number
FR2378270A1
FR2378270A1 FR7701486A FR7701486A FR2378270A1 FR 2378270 A1 FR2378270 A1 FR 2378270A1 FR 7701486 A FR7701486 A FR 7701486A FR 7701486 A FR7701486 A FR 7701486A FR 2378270 A1 FR2378270 A1 FR 2378270A1
Authority
FR
France
Prior art keywords
windings
sec
stress
prim
direct contact
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.)
Withdrawn
Application number
FR7701486A
Other languages
French (fr)
Inventor
Pierre Petit
Gerard Tourscher
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.)
Institut de Recherches de la Siderurgie Francaise IRSID
Original Assignee
Institut de Recherches de la Siderurgie Francaise IRSID
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 Institut de Recherches de la Siderurgie Francaise IRSID filed Critical Institut de Recherches de la Siderurgie Francaise IRSID
Priority to FR7701486A priority Critical patent/FR2378270A1/en
Publication of FR2378270A1 publication Critical patent/FR2378270A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
    • B21B38/04—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring thickness, width, diameter or other transverse dimensions of the product
    • 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
    • G01B7/16—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge
    • G01B7/24—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge using change in magnetic properties
    • 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
    • G01B7/34—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring roughness or irregularity of surfaces
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/04—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands
    • G01L5/045—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands for measuring the tension across the width of a band-shaped flexible member

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Measuring Magnetic Variables (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)

Abstract

The stress taking a preferred orientation in a ferromagnetic material is measured using an electromagnetic collector which is not in direct contact with the material, The collector comprising two prim. windings and two sec. windings. Process comprises (a) generating prim. fluxes in the material (b) generating by means of one of the sec. windings., a first signal, the winding being disposed so that it is sensitive to the difference of the fluxes in the direction of the stress and in a direction perpendicular to it; (c) generating by means of the other sec. winding a second signal, the winding being disposed so that it is sensitive to fluxes at 450 to the above fluxes, and (d) comparing the signals so the generate a further signal representative of the stress.
FR7701486A 1977-01-19 1977-01-19 Measurement of stress in ferromagnetic material - using electromagnetic collector, not in direct contact with material, with two prim. and two sec. windings Withdrawn FR2378270A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7701486A FR2378270A1 (en) 1977-01-19 1977-01-19 Measurement of stress in ferromagnetic material - using electromagnetic collector, not in direct contact with material, with two prim. and two sec. windings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7701486A FR2378270A1 (en) 1977-01-19 1977-01-19 Measurement of stress in ferromagnetic material - using electromagnetic collector, not in direct contact with material, with two prim. and two sec. windings

Publications (1)

Publication Number Publication Date
FR2378270A1 true FR2378270A1 (en) 1978-08-18

Family

ID=9185684

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7701486A Withdrawn FR2378270A1 (en) 1977-01-19 1977-01-19 Measurement of stress in ferromagnetic material - using electromagnetic collector, not in direct contact with material, with two prim. and two sec. windings

Country Status (1)

Country Link
FR (1) FR2378270A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0018428A1 (en) * 1979-05-07 1980-11-12 Magyar Tudományos Akadémia Müszaki Fizikai Kutato Intézete Apparatus for the contactless measuring of elastic stress in a ferromagnetic material
WO1989001613A1 (en) * 1987-08-10 1989-02-23 Hutchinson Ian Nigel Non-destructive determination of stress characteristics in magnetic materials
WO2009040575A1 (en) * 2007-09-24 2009-04-02 Maps Technology Limited Biaxial stress measurement

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0018428A1 (en) * 1979-05-07 1980-11-12 Magyar Tudományos Akadémia Müszaki Fizikai Kutato Intézete Apparatus for the contactless measuring of elastic stress in a ferromagnetic material
WO1989001613A1 (en) * 1987-08-10 1989-02-23 Hutchinson Ian Nigel Non-destructive determination of stress characteristics in magnetic materials
WO2009040575A1 (en) * 2007-09-24 2009-04-02 Maps Technology Limited Biaxial stress measurement
US8316726B2 (en) 2007-09-24 2012-11-27 Maps Technology Limited Biaxial stress management

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Legal Events

Date Code Title Description
ST Notification of lapse