WO2013174364A3 - Device for temperature compensation for fbg extensometers - Google Patents

Device for temperature compensation for fbg extensometers Download PDF

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Publication number
WO2013174364A3
WO2013174364A3 PCT/DE2013/000277 DE2013000277W WO2013174364A3 WO 2013174364 A3 WO2013174364 A3 WO 2013174364A3 DE 2013000277 W DE2013000277 W DE 2013000277W WO 2013174364 A3 WO2013174364 A3 WO 2013174364A3
Authority
WO
WIPO (PCT)
Prior art keywords
groove
fibre
bragg grating
extensometers
fbg
Prior art date
Application number
PCT/DE2013/000277
Other languages
German (de)
French (fr)
Other versions
WO2013174364A2 (en
Inventor
Jochen Maul
Tobias Kipp
Bernd Günther
Original Assignee
Hottinger Baldwin Messtechnik Gmbh
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 Hottinger Baldwin Messtechnik Gmbh filed Critical Hottinger Baldwin Messtechnik Gmbh
Publication of WO2013174364A2 publication Critical patent/WO2013174364A2/en
Publication of WO2013174364A3 publication Critical patent/WO2013174364A3/en

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/02—Optical fibres with cladding with or without a coating
    • G02B6/02057—Optical fibres with cladding with or without a coating comprising gratings
    • G02B6/02076—Refractive index modulation gratings, e.g. Bragg gratings
    • G02B6/02171—Refractive index modulation gratings, e.g. Bragg gratings characterised by means for compensating environmentally induced changes
    • G02B6/02176—Refractive index modulation gratings, e.g. Bragg gratings characterised by means for compensating environmentally induced changes due to temperature fluctuations
    • G02B6/0218—Refractive index modulation gratings, e.g. Bragg gratings characterised by means for compensating environmentally induced changes due to temperature fluctuations using mounting means, e.g. by using a combination of materials having different thermal expansion coefficients
    • 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
    • G01B11/165—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge by means of a grating deformed by the object
    • 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
    • G01B11/18—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge using photoelastic elements
    • 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
    • G01L1/242—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 the material being an optical fibre
    • G01L1/246—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 the material being an optical fibre using integrated gratings, e.g. Bragg gratings

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Transform (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)

Abstract

The invention relates to a device for compensating for temperature-governed measurement errors comprising the following features: a plate (1), a groove (2) extending circumferentially in the top side (1a) of the plate, in which groove an optical fibre (3) with a Bragg grating (4) having the length (L) is fixed, wherein the groove (2) has a width (b) and a depth (t) and the width (b) is at least 1.001 times to 1.5 times and the depth at least 1.001 times fibre diameter (d), the groove (2) has at least one rectilinearly extending section (2a) which has a length (L) and which is at least as long as the Bragg grating (4) and at least 1.3 times wider than the fibre diameter (d), and an entry and exit region (5) for the fibre (3), said region being situated opposite the rectilinearly extending section (2a), and the optical fibre (3) is fixed in the groove (2) by means of an adhesive, wherein the Bragg grating (4) is positioned in the section (2a).
PCT/DE2013/000277 2012-05-21 2013-05-21 Device for temperature compensation for fbg extensometers WO2013174364A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012010029.9 2012-05-21
DE102012010029 2012-05-21

Publications (2)

Publication Number Publication Date
WO2013174364A2 WO2013174364A2 (en) 2013-11-28
WO2013174364A3 true WO2013174364A3 (en) 2014-01-23

Family

ID=49080600

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2013/000277 WO2013174364A2 (en) 2012-05-21 2013-05-21 Device for temperature compensation for fbg extensometers

Country Status (2)

Country Link
DE (1) DE102013008617A1 (en)
WO (1) WO2013174364A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3057358A1 (en) * 2016-10-10 2018-04-13 Airbus Operations (S.A.S.) DEVICE FOR MEASURING FLIGHT PARAMETERS WITH DEFORMATION OPTICAL SENSORS FITTED BY THE RADOME OF AN AIRCRAFT
EP3410060A1 (en) * 2017-05-29 2018-12-05 voestalpine Stahl GmbH Strain gauge and metal strip having a coating for such a strain gauge

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6118914A (en) * 1998-07-20 2000-09-12 Cidra Corporation Method and device for providing stable and precise optical reference signals
WO2003076887A1 (en) * 2002-03-13 2003-09-18 Light Structures As Fiber optic sensor package
US20050061058A1 (en) * 2003-09-24 2005-03-24 Siemens Aktiengesellschaft Method and apparatus of monitoring temperature and strain by using fiber bragg grating (FBG) sensors
WO2008065140A1 (en) * 2006-11-30 2008-06-05 Commissariat A L'energie Atomique Device and method for measuring the mechanical deformations of a section
US20100061678A1 (en) * 2008-09-10 2010-03-11 Lake Shore Cryotronics, Inc. Compact fiber optic sensors and method of making same

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010019247A1 (en) 2010-05-03 2011-11-03 Deutsches Zentrum für Luft- und Raumfahrt e.V. Sensor, system and method for force and / or torque measurement

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6118914A (en) * 1998-07-20 2000-09-12 Cidra Corporation Method and device for providing stable and precise optical reference signals
WO2003076887A1 (en) * 2002-03-13 2003-09-18 Light Structures As Fiber optic sensor package
US20050061058A1 (en) * 2003-09-24 2005-03-24 Siemens Aktiengesellschaft Method and apparatus of monitoring temperature and strain by using fiber bragg grating (FBG) sensors
WO2008065140A1 (en) * 2006-11-30 2008-06-05 Commissariat A L'energie Atomique Device and method for measuring the mechanical deformations of a section
US20100061678A1 (en) * 2008-09-10 2010-03-11 Lake Shore Cryotronics, Inc. Compact fiber optic sensors and method of making same

Also Published As

Publication number Publication date
WO2013174364A2 (en) 2013-11-28
DE102013008617A1 (en) 2013-11-21

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