GB0905311D0 - Device to allow the installation of the correct bolt pre-loaded and to allow the subseaquent monitoring of the pre-loaded service loads - Google Patents

Device to allow the installation of the correct bolt pre-loaded and to allow the subseaquent monitoring of the pre-loaded service loads

Info

Publication number
GB0905311D0
GB0905311D0 GBGB0905311.7A GB0905311A GB0905311D0 GB 0905311 D0 GB0905311 D0 GB 0905311D0 GB 0905311 A GB0905311 A GB 0905311A GB 0905311 D0 GB0905311 D0 GB 0905311D0
Authority
GB
United Kingdom
Prior art keywords
allow
bolt
loaded
monitoring
eddy current
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Withdrawn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
GBGB0905311.7A
Other versions
GB2469019A (en
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB0905311A priority Critical patent/GB2469019A/en
Publication of GB0905311D0 publication Critical patent/GB0905311D0/en
Publication of GB2469019A publication Critical patent/GB2469019A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B31/00—Screwed connections specially modified in view of tensile load; Break-bolts
    • F16B31/02—Screwed connections specially modified in view of tensile load; Break-bolts for indicating the attainment of a particular tensile load or limiting tensile load
    • F16B31/025—Screwed connections specially modified in view of tensile load; Break-bolts for indicating the attainment of a particular tensile load or limiting tensile load with a gauge pin in a longitudinal bore in the body of the bolt
    • 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
    • G01L5/24—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for determining value of torque or twisting moment for tightening a nut or other member which is similarly stressed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B31/00—Screwed connections specially modified in view of tensile load; Break-bolts
    • F16B31/02—Screwed connections specially modified in view of tensile load; Break-bolts for indicating the attainment of a particular tensile load or limiting tensile load
    • F16B2031/022—Screwed connections specially modified in view of tensile load; Break-bolts for indicating the attainment of a particular tensile load or limiting tensile load using an ultrasonic transducer

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)

Abstract

A bolt pre-load monitor includes an eddy current based relative displacement sensor to sense the movement of a pin 6 placed in the head of a bolt, thereby monitoring extension of the bolt shank 8 when tension is applied thereto. The eddy current sensor consists of a printed circuit board 1 on one side of which is mounted a coil 2 which faces a copper or aluminium disc 4 attached to the top of the pin. The other side of the circuit board is used to mount the electronics for the eddy current sensor. The monitor allows the quantitative measurement of pre-load applied to the bolt during installation thereof as well as allowing subsequent monitoring and/or checking of the in-service load on the bolt.
GB0905311A 2009-03-30 2009-03-30 Bolt pre-load monitor using eddy current displacement sensor Withdrawn GB2469019A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0905311A GB2469019A (en) 2009-03-30 2009-03-30 Bolt pre-load monitor using eddy current displacement sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0905311A GB2469019A (en) 2009-03-30 2009-03-30 Bolt pre-load monitor using eddy current displacement sensor

Publications (2)

Publication Number Publication Date
GB0905311D0 true GB0905311D0 (en) 2009-05-13
GB2469019A GB2469019A (en) 2010-10-06

Family

ID=40671838

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0905311A Withdrawn GB2469019A (en) 2009-03-30 2009-03-30 Bolt pre-load monitor using eddy current displacement sensor

Country Status (1)

Country Link
GB (1) GB2469019A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202018004013U1 (en) * 2018-08-29 2018-09-09 Jörg Blin Wheel bolt with signaling function
US20230094239A1 (en) * 2021-09-28 2023-03-30 Fontana Fasteners R.D. S.R.L. Method, apparatus, and system for a fastener having a wireless monitoring system

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3718066A (en) * 1970-12-28 1973-02-27 Iit Res Inst Tension indicating fastener
US4294122A (en) * 1979-07-12 1981-10-13 General Dynamics Corporation Fastener incorporating ultrasonic transducer
US5461923A (en) * 1994-05-16 1995-10-31 Raymond Engineering Inc. Acoustic transducer, transducerized fastener and method of manufacture
US5945665A (en) * 1997-05-09 1999-08-31 Cidra Corporation Bolt, stud or fastener having an embedded fiber optic Bragg Grating sensor for sensing tensioning strain
EA001307B1 (en) * 1997-08-19 2000-12-25 Стенли Сеней Load indicating fastener systems method and apparatus.
WO2000022306A1 (en) * 1998-10-09 2000-04-20 Hanstock Fasteners Pty. Ltd. Monitoring tension of threaded fasteners
GB2372826A (en) * 2001-03-01 2002-09-04 Rotabolt Ltd Load-indicating fastener
US6501211B1 (en) * 2001-07-13 2002-12-31 Masoud Nasrollahzadeh Ultra-sonic transducer assembly incorporated into a printed circuit board for determining tension forces in a bolt
GB0121317D0 (en) * 2001-09-03 2001-10-24 Sjb Engineering Ltd Load-indicating fastener
US20060225484A1 (en) * 2001-10-09 2006-10-12 Gleman Stuart M Bolt tension gauging system
US20060263166A1 (en) * 2005-05-18 2006-11-23 Honeywell International Inc. Devices and methods for monitoring fastener tension
US7293466B2 (en) * 2005-07-19 2007-11-13 Hitachi, Ltd. Bolt with function of measuring strain

Also Published As

Publication number Publication date
GB2469019A (en) 2010-10-06

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)