GB2252635A - Improvements in or relating to a method and apparatus for measuring shear force - Google Patents

Improvements in or relating to a method and apparatus for measuring shear force

Info

Publication number
GB2252635A
GB2252635A GB9203314A GB9203314A GB2252635A GB 2252635 A GB2252635 A GB 2252635A GB 9203314 A GB9203314 A GB 9203314A GB 9203314 A GB9203314 A GB 9203314A GB 2252635 A GB2252635 A GB 2252635A
Authority
GB
United Kingdom
Prior art keywords
shear force
relating
tips
displacement
sheet
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.)
Granted
Application number
GB9203314A
Other versions
GB9203314D0 (en
GB2252635B (en
Inventor
James Robert Hewit
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.)
BTG International Ltd
Original Assignee
British Technology Group 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
Priority claimed from GB898920028A external-priority patent/GB8920028D0/en
Application filed by British Technology Group Ltd filed Critical British Technology Group Ltd
Priority to GB9203314A priority Critical patent/GB2252635B/en
Publication of GB9203314D0 publication Critical patent/GB9203314D0/en
Publication of GB2252635A publication Critical patent/GB2252635A/en
Application granted granted Critical
Publication of GB2252635B publication Critical patent/GB2252635B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/24—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet
    • G01L1/247—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet using distributed sensing elements, e.g. microcapsules
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
    • A61B5/1036—Measuring load distribution, e.g. podologic studies
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Medical Informatics (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Dentistry (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)

Abstract

Method and apparatus for measuring the shear force acting over a first surface (4a, 27) by reason of its engagement with a second surface (3) presented by a sheet-form member (1). The second surface is formed with projections (4), the tips (6) of which deflect, in a direction parallel to the plane of the sheet, when subjected to the force. Recording means (7) record the displacement of the tips, and equipment (9) computes the magnitude and the direction of the shear force by reference to that displacement. The specification particularly describes the application of the invention to the measurement of shear forces acting upon a human foot, and to mechanical fingers used to grip components in the course of a robotic assembly process.
GB9203314A 1989-09-05 1992-02-17 Improvements in or relating to a method and apparatus for measuring shear force Expired - Fee Related GB2252635B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9203314A GB2252635B (en) 1989-09-05 1992-02-17 Improvements in or relating to a method and apparatus for measuring shear force

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB898920028A GB8920028D0 (en) 1989-09-05 1989-09-05 Improvements in or relating to a method and apparatus for measuring shear force
PCT/GB1990/001353 WO1991003705A1 (en) 1989-09-05 1990-09-03 Improvements in or relating to a method and apparatus for measuring shear force
GB9203314A GB2252635B (en) 1989-09-05 1992-02-17 Improvements in or relating to a method and apparatus for measuring shear force

Publications (3)

Publication Number Publication Date
GB9203314D0 GB9203314D0 (en) 1992-04-01
GB2252635A true GB2252635A (en) 1992-08-12
GB2252635B GB2252635B (en) 1993-05-12

Family

ID=26295871

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9203314A Expired - Fee Related GB2252635B (en) 1989-09-05 1992-02-17 Improvements in or relating to a method and apparatus for measuring shear force

Country Status (1)

Country Link
GB (1) GB2252635B (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2325490A (en) * 1942-01-09 1943-07-27 Herbert O Elftman Pressure indicating method and apparatus
FR2266154A1 (en) * 1974-03-29 1975-10-24 Univ Ramot
FR2294427A1 (en) * 1974-12-11 1976-07-09 Univ Strathclyde DEFORMATION MEASUREMENT PROCESS
US3987668A (en) * 1975-11-17 1976-10-26 Popenoe Charles H Light reflective opti-mechanical displacement microindicator

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2325490A (en) * 1942-01-09 1943-07-27 Herbert O Elftman Pressure indicating method and apparatus
FR2266154A1 (en) * 1974-03-29 1975-10-24 Univ Ramot
FR2294427A1 (en) * 1974-12-11 1976-07-09 Univ Strathclyde DEFORMATION MEASUREMENT PROCESS
US3987668A (en) * 1975-11-17 1976-10-26 Popenoe Charles H Light reflective opti-mechanical displacement microindicator

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
IEEE Spectrum, vol 22, no.8, Aug'85, (NY,US), P.Dario et al.:"Tactile sensors etc.",pages 46-52 *

Also Published As

Publication number Publication date
GB9203314D0 (en) 1992-04-01
GB2252635B (en) 1993-05-12

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19940903