GB8419110D0 - Crack monitor systems - Google Patents

Crack monitor systems

Info

Publication number
GB8419110D0
GB8419110D0 GB848419110A GB8419110A GB8419110D0 GB 8419110 D0 GB8419110 D0 GB 8419110D0 GB 848419110 A GB848419110 A GB 848419110A GB 8419110 A GB8419110 A GB 8419110A GB 8419110 D0 GB8419110 D0 GB 8419110D0
Authority
GB
United Kingdom
Prior art keywords
monitor systems
crack monitor
crack
systems
monitor
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Withdrawn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
GB848419110A
Other versions
GB2145515A (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.)
NMI Ltd
Original Assignee
NMI 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 NMI Ltd filed Critical NMI Ltd
Publication of GB8419110D0 publication Critical patent/GB8419110D0/en
Publication of GB2145515A publication Critical patent/GB2145515A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
    • G01M11/08—Testing mechanical properties
    • G01M11/083—Testing mechanical properties by using an optical fiber in contact with the device under test [DUT]
    • G01M11/085—Testing mechanical properties by using an optical fiber in contact with the device under test [DUT] the optical fiber being on or near the surface of the DUT
    • 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
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/02—Mechanical actuation
    • G08B13/12—Mechanical actuation by the breaking or disturbance of stretched cords or wires
    • G08B13/126—Mechanical actuation by the breaking or disturbance of stretched cords or wires for a housing, e.g. a box, a safe, or a room
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/18—Status alarms

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Length Measuring Devices By Optical Means (AREA)
GB08419110A 1983-08-20 1984-07-26 Crack or strain monitor systems Withdrawn GB2145515A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB838322485A GB8322485D0 (en) 1983-08-20 1983-08-20 Crack monitor systems

Publications (2)

Publication Number Publication Date
GB8419110D0 true GB8419110D0 (en) 1984-08-30
GB2145515A GB2145515A (en) 1985-03-27

Family

ID=10547649

Family Applications (2)

Application Number Title Priority Date Filing Date
GB838322485A Pending GB8322485D0 (en) 1983-08-20 1983-08-20 Crack monitor systems
GB08419110A Withdrawn GB2145515A (en) 1983-08-20 1984-07-26 Crack or strain monitor systems

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB838322485A Pending GB8322485D0 (en) 1983-08-20 1983-08-20 Crack monitor systems

Country Status (1)

Country Link
GB (2) GB8322485D0 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106840869A (en) * 2016-12-15 2017-06-13 北京航空航天大学 A kind of hole-edge crack diagnostic method for being based on fiber grating spectral image analysis under two kinds of cloth patch modes

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5026141A (en) * 1981-08-24 1991-06-25 G2 Systems Corporation Structural monitoring system using fiber optics
US4927232A (en) * 1985-03-18 1990-05-22 G2 Systems Corporation Structural monitoring system using fiber optics
US5038618A (en) * 1986-11-11 1991-08-13 British Aerospace Public Limited Company Measurement of distortion
DE3771865D1 (en) * 1987-02-13 1991-09-05 G2 Systems Corp FIBER OPTICAL CONSTRUCTION MONITORING SYSTEM.
DE3716168A1 (en) * 1987-05-14 1988-11-24 Bayerische Motoren Werke Ag Sensor for a safety device for motor vehicles
AU2770189A (en) * 1988-01-06 1989-07-06 Unisearch Limited Use of optical fibre in pressure sensitive transducers
FR2689234B1 (en) * 1992-03-26 1994-07-01 Opto Ind IMPROVED FIBER OPTIC PRESSURE SENSOR.
GB9317576D0 (en) * 1993-08-24 1993-10-06 British Aerospace Fibre optic damage detection system
DE102007048817B4 (en) * 2007-10-10 2016-06-30 Airbus Defence and Space GmbH Sensor for measuring voltages in a substrate
DK2112374T4 (en) 2008-04-21 2019-01-28 Siemens Ag Breakage detection system
IL247408B (en) 2016-08-21 2018-03-29 Elbit Systems Ltd System and method for detecting weakening of the adhesion strength between structural elements

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4446892A (en) * 1979-09-05 1984-05-08 Maxwell Ag Method and apparatus for monitoring lengths of hose
GB2101378A (en) * 1981-07-09 1983-01-12 Gordon James Pill Improvements in and relating to underground installation protection systems

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106840869A (en) * 2016-12-15 2017-06-13 北京航空航天大学 A kind of hole-edge crack diagnostic method for being based on fiber grating spectral image analysis under two kinds of cloth patch modes
CN106840869B (en) * 2016-12-15 2019-08-23 北京航空航天大学 A kind of hole-edge crack diagnostic method based on fiber grating spectral image analysis under two kinds of cloth patch modes

Also Published As

Publication number Publication date
GB2145515A (en) 1985-03-27
GB8322485D0 (en) 1983-09-21

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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)