JPH09510293A - 歪み及び温度測定が可能な単一の回折格子を用いた埋封型光学センサ - Google Patents
歪み及び温度測定が可能な単一の回折格子を用いた埋封型光学センサInfo
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- JPH09510293A JPH09510293A JP7523608A JP52360895A JPH09510293A JP H09510293 A JPH09510293 A JP H09510293A JP 7523608 A JP7523608 A JP 7523608A JP 52360895 A JP52360895 A JP 52360895A JP H09510293 A JPH09510293 A JP H09510293A
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Classifications
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- 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
-
- 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]
- G01M11/086—Details about the embedment of the optical fiber within the DUT
-
- 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
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
- G01K11/32—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in optical fibres
- G01K11/3206—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in optical fibres at discrete locations in the fibre, e.g. using Bragg scattering
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K5/00—Measuring temperature based on the expansion or contraction of a material
- G01K5/48—Measuring temperature based on the expansion or contraction of a material the material being a solid
- G01K5/56—Measuring temperature based on the expansion or contraction of a material the material being a solid constrained so that expansion or contraction causes a deformation of the solid
- G01K5/62—Measuring temperature based on the expansion or contraction of a material the material being a solid constrained so that expansion or contraction causes a deformation of the solid the solid body being formed of compounded strips or plates, e.g. bimetallic strip
- G01K5/70—Measuring temperature based on the expansion or contraction of a material the material being a solid constrained so that expansion or contraction causes a deformation of the solid the solid body being formed of compounded strips or plates, e.g. bimetallic strip specially adapted for indicating or recording
- G01K5/72—Measuring temperature based on the expansion or contraction of a material the material being a solid constrained so that expansion or contraction causes a deformation of the solid the solid body being formed of compounded strips or plates, e.g. bimetallic strip specially adapted for indicating or recording with electric transmission means for final indication
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Optical Transform (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
Abstract
Description
Claims (1)
- 【特許請求の範囲】 1. 入射光を規制し、かつ、戻り光を規制するための光学的導波路と、 前記入射光の光路内において前記導波路内に配設され、前記入射光の一部を反 射するようになっているとともに、第一の横方向軸と、前記第一の横方向軸に垂 直な第二の横方向軸と、を有する少なくとも一つの反射要素と、を有しており、 かつ、前記第一の横方向軸と前記第二の横方向軸とは双方とも、長手方向軸に対 して垂直であり、 前記反射要素に対して複数の力を加えて、前記反射要素内に不等方横方向歪み を加えるようになっている横方向応力手段と、を有しており、 前記不等方横方向歪みは、前記反射要素内に複屈折を生じさせるとともに、温 度により前記不均等横方向歪みが変化すると、前記複屈折が変化するようになっ ており、 前記複屈折は、前記反射要素の第一偏光軸に沿っている前記反射要素波長の第 一ピークを与え、かつ、前記反射要素の第二の偏光軸に沿った前記反射要素波長 の第二ピークを与え、 前記第一ピークと前記第二ピークとの間には波長差が存在することによって波 長間隔が形成されていて、かつ、前記第一ピークと前記第二ピークとの間の中間 が平均波長とされ、 さらに、上記波長間隔は、温度と、歪みと、に応答性を有していて、この応答 性は、上記平均波長に対する応答性とは異なっている ため、温度測定と、歪み測定と、を上記単一の反射要素によっても独立して行う ことが可能な埋封型光学センサ。 2. 前記横方向応力手段は、前記反射要素を包囲する複合構造体であることを 特徴とする請求項1に記載の埋封型光学センサ。 3. 前記複合構造体は、前記反射要素に対して所定の配置を有している強化用 のフィラメントと、前記複合構造体を互いに保持している結合材料と、を有する ことを特徴とする請求項2に記載の埋封型光学センサ。 4. 前記フィラメントは、第一の熱膨張係数を有しており、かつ、前記フィラ メントの間の前記結合材料は、前記第一の熱膨張係数とは異なっている第二の熱 膨張係数を有していることを特徴とする請求項3に記載の埋封型光学センサ。 5. 前記反射要素に隣接した前記フィラメントは、前記反射要素の長手方向軸 とは平行でない方向に配列されていることを特徴とする請求項3に記載の埋封型 光学センサ。 6. 前記反射要素に隣接した前記フィラメントは、前記反射要素の前記長手方 向軸に垂直な方向に配列されていることを特徴とする請求項3に記載の埋封型光 学センサ。 7. 前記フィラメントは、前記反射要素を包囲する形状を形成していて、この 形状は、前記第一の横方向軸よりも前記第二の横方向軸に沿って容積が大きくな っていることを特徴とする請求項5に記載の埋封型光学センサ。 8. 前記形状は、“目”形状であることを特徴とする請求項7に記載の埋封型 光学センサ。 9. 前記複合構造体は、複数の層を有しており、それぞれの層は、さらに、前 記フィラメントと、前記結合材料と、を有していることを特徴とする請求項3に 記載の埋封型光学センサ。 10. 前記複数の層はそれぞれ、不等方的、かつ、互いに垂直な面内における ネット熱膨張係数を有していることを特徴とする請求項9に記載の埋封型光学セ ンサ。 11. 前記反射要素は、前記反射要素の上側が4つの前記層に取り囲まれてお り、前記反射要素の下側はまた、4つの前記層によって取り囲まれていることを 特徴とする請求項9に記載の埋封型光学センサ。 12. 前記層のうち少なくとも一つはフィラメントを含有しており、このフィ ラメントは、前記層のうちの別の層のフィラメントの方向とは異なっていること を特徴とする請求項9に記載の埋封型光 学センサ。 13. 前記結合材料が、ポリママトリックスであることを特徴とする請求項3 に記載の埋封型光学センサ。 14. 前記フィラメントは、グラファイト製であることを特徴とする請求項3 に記載の埋封型光学センサ。 15. 前記フィラメントは、グラファイトストランドを有していることを特徴 とする請求項3に記載の埋封型光学センサ。 16. 前記導波路は、オプティカルファイバであることを特徴とする請求項1 に記載の埋封型光学センサ。 17. 前記反射型要素は、ブラッグ回折格子を有していることを特徴とする請 求項1に記載の埋封型光学センサ。 18. 入射光を規制し、かつ、戻り光を規制するための光学的導波路と、 前記入射光の光路内において前記導波路内に配設され、前記入射光の一部を反 射するようになっているとともに、第一の横方向軸と、上記第一の横方向軸に垂 直な第二の横方向軸と、を有する少なくとも一つの反射要素と、を有しており、 かつ、前記第一の横方向軸と前記第二の横方向軸とは双方とも、長手方向軸に対 して垂直であり、 前記反射要素を取り囲み、かつ積層構造体を形成している複数の層を有し、 前記複数の層は、互いに積層された場合には前記反射要素に対して力を加えて 、不等方横方向応力を前記反射要素に対して生じさせるような方法と材料とを有 し、 前記不等方横方向歪みは、前記反射要素内に複屈折を生じさせるとともに、温 度により前記不均等横方向歪みが変すると、前記複屈折が変化するようになって おり、 前記複屈折は、前記反射要素の第一偏光軸に沿っている前記反射要素波長の第 一ピークを与え、かつ、前記反射要素の第二の偏光軸に沿った前記反射要素波長 の第二ピークを与えており、 前記第一ピークと前記第二ピークとの間には波長差が存在することによって波 長間隔が形成されており、かつ、前記第一ピークと前記第二ピークとの間の中間 が平均波長とされ、 さらに、上記波長間隔は、温度と、歪みと、に応答性を有していて、この応答 性は、上記平均波長に対する応答性とは異なっているため、温度測定と、歪み測 定と、を上記単一の反射要素によっても独立して行うことが可能な埋封型光学セ ンサ。 19. 前記複数の層はそれぞれ面内において互いに垂直、かつ、不等方のネッ ト熱膨張係数を有していることを特徴とする請求項18に記載の埋封型光学セン サ。 20. 前記複数の層は、前記反射要素に対して所定の配列を有している強化フ ィラメントと、前記積層構造体を互いに保持している結合材料とを有しているこ とを特徴とする請求項18に記載の埋封型光学センサ。 21. 前記フィラメントは、第一の熱膨張係数を有しており、かつ、前記フィ ラメントの間の前記結合材料は、前記第一の熱膨張係数とは異なっている第二の 熱膨張係数を有していることを特徴とする請求項20に記載の埋封型光学センサ 。 22. 前記反射要素に隣接した前記フィラメントは、前記反射要素の長手方向 軸とは平行でない方向に配列されていることを特徴とする請求項20に記載の埋 封型光学センサ。 23. 前記反射要素に隣接した前記フィラメントは、前記反射要素の前記長手 方向軸に垂直な方向に配列されていることを特徴とする請求項20に記載の埋封 型光学センサ。 24. 前記フィラメントは、前記反射要素を包囲する形状を形成していて、こ の形状は、前記第一の横方向軸よりも前記第二の横方向軸に沿って容積が大きく なっていることを特徴とする請求項23に記載の埋封型光学センサ。 25. 前記形状は、“目”形状であることを特徴とする請求項2 4に記載の埋封型光学センサ。 26. 前記反射要素は、前記反射要素の上側が4つの前記層に取り囲まれてお り、前記反射要素の下側はまた、4つの前記層によって取り囲まれていることを 特徴とする請求項18に記載の埋封型光学センサ。 27. 前記層のうち少なくとも二つの層のフィラメントは、前記層のうちの別 の層のフィラメントの方向とは異なっていることを特徴とする請求項20に記載 の埋封型光学センサ。 28. 前記結合材料が、ポリママトリックスであることを特徴とする請求項2 0に記載の埋封型光学センサ。 29. 前記フィラメントは、グラファイト製であることを特徴とする請求項2 0に記載の埋封型光学センサ。 30. 前記フィラメントは、グラファイトストランドを有していることを特徴 とする請求項20に記載の埋封型光学センサ。 31. 前記導波路は、オプティカルファイバであることを特徴とする請求項1 8に記載の埋封型光学センサ。 32. 前記反射型要素は、ブラッグ回折格子を有していることを 特徴とする請求項18に記載の埋封型光学センサ。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/207,993 | 1994-03-08 | ||
US08/207,993 US5399854A (en) | 1994-03-08 | 1994-03-08 | Embedded optical sensor capable of strain and temperature measurement using a single diffraction grating |
PCT/US1995/002866 WO1995024614A1 (en) | 1994-03-08 | 1995-03-08 | Embedded optical sensor capable of strain and temperature measurement using a single diffraction grating |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH09510293A true JPH09510293A (ja) | 1997-10-14 |
JP3574136B2 JP3574136B2 (ja) | 2004-10-06 |
Family
ID=22772809
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP52360895A Expired - Lifetime JP3574136B2 (ja) | 1994-03-08 | 1995-03-08 | 歪み及び温度測定が可能な単一の回折格子を用いた埋封型光学センサ |
Country Status (9)
Country | Link |
---|---|
US (1) | US5399854A (ja) |
EP (1) | EP0753130B1 (ja) |
JP (1) | JP3574136B2 (ja) |
KR (1) | KR100215950B1 (ja) |
CN (1) | CN1088833C (ja) |
DE (1) | DE69513281T2 (ja) |
DK (1) | DK0753130T3 (ja) |
GR (1) | GR3032556T3 (ja) |
WO (1) | WO1995024614A1 (ja) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2001215112A (ja) * | 2000-02-02 | 2001-08-10 | Eads Airbus Gmbh | 担持体に被着されたカバー層の膨張および温度とその変化を検知するための装置および方法 |
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CN115872053B (zh) * | 2023-02-20 | 2024-04-19 | 中国工程物理研究院激光聚变研究中心 | 一种微纳尺度下的弱刚度连接件转运工装 |
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US4806012A (en) * | 1984-08-13 | 1989-02-21 | United Technologies Corporation | Distributed, spatially resolving optical fiber strain gauge |
US4761073A (en) * | 1984-08-13 | 1988-08-02 | United Technologies Corporation | Distributed, spatially resolving optical fiber strain gauge |
JPH01158326A (ja) * | 1987-09-11 | 1989-06-21 | Toshiba Corp | 温度測定装置 |
US5164587A (en) * | 1991-09-09 | 1992-11-17 | Harbor Branch Oceanographic Institution, Inc. | Polarimetric parameter measurement systems and methods for measuring a plurality of parameters |
US5265475A (en) * | 1992-05-08 | 1993-11-30 | Rockwell International Corporation | Fiber optic joint sensor |
WO1993025866A1 (en) * | 1992-06-05 | 1993-12-23 | Monash University | Sensing patches utilising incorporated waveguide sensor |
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1994
- 1994-03-08 US US08/207,993 patent/US5399854A/en not_active Expired - Lifetime
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1995
- 1995-03-08 WO PCT/US1995/002866 patent/WO1995024614A1/en active IP Right Grant
- 1995-03-08 EP EP95913985A patent/EP0753130B1/en not_active Expired - Lifetime
- 1995-03-08 DE DE69513281T patent/DE69513281T2/de not_active Expired - Lifetime
- 1995-03-08 CN CN95192033A patent/CN1088833C/zh not_active Expired - Lifetime
- 1995-03-08 KR KR1019960704948A patent/KR100215950B1/ko not_active IP Right Cessation
- 1995-03-08 JP JP52360895A patent/JP3574136B2/ja not_active Expired - Lifetime
- 1995-03-08 DK DK95913985T patent/DK0753130T3/da active
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2000
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2001215112A (ja) * | 2000-02-02 | 2001-08-10 | Eads Airbus Gmbh | 担持体に被着されたカバー層の膨張および温度とその変化を検知するための装置および方法 |
JP4610096B2 (ja) * | 2000-02-02 | 2011-01-12 | エアバス・オペレーションズ・ゲーエムベーハー | 担持体に被着されたカバー層の膨張および温度とその変化を検知するための装置および方法 |
WO2009028164A1 (ja) * | 2007-08-27 | 2009-03-05 | The University Of Tokyo | 亀裂発生位置の検出方法 |
US8559018B2 (en) | 2007-08-27 | 2013-10-15 | The University Of Tokyo | Detection method of crack occurrence position |
JP2015518535A (ja) * | 2012-03-20 | 2015-07-02 | スネクマ | 航空エンジンのファンへの損傷またはこれに対する異物の衝撃の検出および追跡 |
JP2014202627A (ja) * | 2013-04-05 | 2014-10-27 | 三菱電機株式会社 | 繊維強化複合材料構造体および繊維強化複合材料構造体の製造方法 |
JP2020100122A (ja) * | 2018-12-25 | 2020-07-02 | フクビ化学工業株式会社 | Frp引抜成形体、及びその製造方法 |
Also Published As
Publication number | Publication date |
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US5399854A (en) | 1995-03-21 |
EP0753130A1 (en) | 1997-01-15 |
DK0753130T3 (da) | 2000-04-25 |
KR970701852A (ko) | 1997-04-12 |
CN1144000A (zh) | 1997-02-26 |
DE69513281T2 (de) | 2000-02-17 |
GR3032556T3 (en) | 2000-05-31 |
KR100215950B1 (ko) | 1999-08-16 |
EP0753130B1 (en) | 1999-11-10 |
WO1995024614A1 (en) | 1995-09-14 |
DE69513281D1 (de) | 1999-12-16 |
JP3574136B2 (ja) | 2004-10-06 |
CN1088833C (zh) | 2002-08-07 |
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