JP4878013B2 - 亀裂発生位置の検出方法 - Google Patents
亀裂発生位置の検出方法 Download PDFInfo
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- JP4878013B2 JP4878013B2 JP2007220255A JP2007220255A JP4878013B2 JP 4878013 B2 JP4878013 B2 JP 4878013B2 JP 2007220255 A JP2007220255 A JP 2007220255A JP 2007220255 A JP2007220255 A JP 2007220255A JP 4878013 B2 JP4878013 B2 JP 4878013B2
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- 238000001514 detection method Methods 0.000 title claims description 15
- 239000013307 optical fiber Substances 0.000 claims description 38
- 238000001228 spectrum Methods 0.000 claims description 25
- 239000002344 surface layer Substances 0.000 claims description 25
- 239000012792 core layer Substances 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 10
- 229920003002 synthetic resin Polymers 0.000 claims description 5
- 239000000057 synthetic resin Substances 0.000 claims description 5
- 239000002131 composite material Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
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- 238000013459 approach Methods 0.000 description 8
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- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
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Classifications
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- 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
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
- G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
- G01D5/353—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre
- G01D5/35306—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre using an interferometer arrangement
- G01D5/35309—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre using an interferometer arrangement using multiple waves interferometer
- G01D5/35316—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre using an interferometer arrangement using multiple waves interferometer using a Bragg gratings
-
- 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]
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
- G01M5/0033—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining damage, crack or wear
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
- G01M5/0091—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by using electromagnetic excitation or detection
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Electromagnetism (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Length Measuring Devices By Optical Means (AREA)
Description
前記アレスタ部の前記表層に沿う端部に、グレーティング部を有する複数の光ファイバを埋設し、
各光ファイバからの反射光のスペクトルを比較することによって、前記表層およびコア層間の亀裂の発生位置を検出することを特徴とする亀裂発生位置の検出方法である。
2 コア層
3 コア層2の表面
4 表層
5 アレスタ部
6a,6b 光ファイバ
10 FEMモデル
A,B スペクトル
Claims (2)
- 発泡合成樹脂材料から成るコア層の表面に複合材料から成る表層が積層され、前記表層とコア層との界面領域に、前記表層およびコア層間の剥離の進展を阻止するためのアレスタ部を設け、
前記アレスタ部の前記表層に沿う端部に、グレーティング部を有する複数の光ファイバを埋設し、
各光ファイバからの反射光のスペクトルを比較することによって、前記表層およびコア層間の亀裂の発生位置を検出することを特徴とする亀裂発生位置の検出方法。 - 前記各光ファイバは、アレスタ部の前記表層に沿う両端部にそれぞれ設けられることを特徴とする請求項1記載の亀裂発生位置の検出方法。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007220255A JP4878013B2 (ja) | 2007-08-27 | 2007-08-27 | 亀裂発生位置の検出方法 |
PCT/JP2008/002293 WO2009028164A1 (ja) | 2007-08-27 | 2008-08-25 | 亀裂発生位置の検出方法 |
EP08790497.5A EP2187165B1 (en) | 2007-08-27 | 2008-08-25 | Method for detecting crack occurrence position |
US12/675,393 US8559018B2 (en) | 2007-08-27 | 2008-08-25 | Detection method of crack occurrence position |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007220255A JP4878013B2 (ja) | 2007-08-27 | 2007-08-27 | 亀裂発生位置の検出方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2009051368A JP2009051368A (ja) | 2009-03-12 |
JP4878013B2 true JP4878013B2 (ja) | 2012-02-15 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2007220255A Active JP4878013B2 (ja) | 2007-08-27 | 2007-08-27 | 亀裂発生位置の検出方法 |
Country Status (4)
Country | Link |
---|---|
US (1) | US8559018B2 (ja) |
EP (1) | EP2187165B1 (ja) |
JP (1) | JP4878013B2 (ja) |
WO (1) | WO2009028164A1 (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5294325B2 (ja) * | 2009-09-08 | 2013-09-18 | 川崎重工業株式会社 | 積層構造体、並びにその亀裂検知方法及び亀裂検知構造 |
FR2988474B1 (fr) * | 2012-03-21 | 2015-02-06 | Commissariat Energie Atomique | Systeme de mesure de la propagation d'une zone d'ecartement dans un substrat |
JP6754585B2 (ja) * | 2016-02-17 | 2020-09-16 | 帝人株式会社 | モニタリング装置及びモニタリング方法 |
WO2019204635A1 (en) | 2018-04-18 | 2019-10-24 | Xenon Corporation | Protecting a uv-transmissive window |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05340867A (ja) * | 1992-06-05 | 1993-12-24 | Ishikawajima Harima Heavy Ind Co Ltd | 繊維強化複合材積層板の層間剥離検出方法 |
GB9317576D0 (en) * | 1993-08-24 | 1993-10-06 | British Aerospace | Fibre optic damage detection system |
US5399854A (en) * | 1994-03-08 | 1995-03-21 | United Technologies Corporation | Embedded optical sensor capable of strain and temperature measurement using a single diffraction grating |
GB9513928D0 (en) * | 1995-07-07 | 1995-09-06 | British Aerospace | Bonded joint analysis |
US5828059A (en) * | 1996-09-09 | 1998-10-27 | Udd; Eric | Transverse strain measurements using fiber optic grating based sensors |
JP2001004440A (ja) * | 1999-06-18 | 2001-01-12 | Nippon Telegr & Teleph Corp <Ntt> | 光ファイバセンサ埋込板、光ファイバセンサ埋込型複合材料およびその製造方法 |
JP3492943B2 (ja) * | 1999-07-07 | 2004-02-03 | 日本電信電話株式会社 | 光ファイバセンサによる剥離検出方法 |
DE10004384C2 (de) * | 2000-02-02 | 2003-04-03 | Daimler Chrysler Ag | Anordnung und Verfahren zur Erfassung von Dehnungen und Temperaturen und deren Veränderungen einer auf einem Träger, insbesondere einem aus Metall, Kunststoff oder Keramik bestehenden Träger, applizierten Deckschicht |
GB0031646D0 (en) * | 2000-12-22 | 2001-02-07 | European Community | Method and apparatus for crack and fracture detection utilizing bragg gratings |
US6778279B2 (en) * | 2002-02-19 | 2004-08-17 | Honeywell International, Inc. | Inline sagnac fiber optic sensor with modulation adjustment |
JP4027258B2 (ja) * | 2003-04-18 | 2007-12-26 | 本田技研工業株式会社 | 接着部の剥離検査方法 |
US7488929B2 (en) * | 2003-08-13 | 2009-02-10 | Zygo Corporation | Perimeter detection using fiber optic sensors |
AU2004277167A1 (en) * | 2003-09-22 | 2005-04-07 | Kim Hyeung-Yun | Methods for monitoring structural health conditions |
JP4216202B2 (ja) * | 2004-01-26 | 2009-01-28 | 三菱電機株式会社 | リブ構造体およびその構造体の製造方法 |
KR20060033564A (ko) * | 2004-10-15 | 2006-04-19 | 이금석 | 광섬유격자센서를 이용한 균열측정 방법 |
JP4746340B2 (ja) * | 2005-04-01 | 2011-08-10 | 川崎重工業株式会社 | サンドイッチパネルの剥離進展防止構造 |
-
2007
- 2007-08-27 JP JP2007220255A patent/JP4878013B2/ja active Active
-
2008
- 2008-08-25 EP EP08790497.5A patent/EP2187165B1/en active Active
- 2008-08-25 US US12/675,393 patent/US8559018B2/en active Active
- 2008-08-25 WO PCT/JP2008/002293 patent/WO2009028164A1/ja active Application Filing
Also Published As
Publication number | Publication date |
---|---|
WO2009028164A1 (ja) | 2009-03-05 |
EP2187165A1 (en) | 2010-05-19 |
EP2187165B1 (en) | 2019-05-15 |
US8559018B2 (en) | 2013-10-15 |
JP2009051368A (ja) | 2009-03-12 |
EP2187165A4 (en) | 2016-05-18 |
US20110063626A1 (en) | 2011-03-17 |
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