CN103162876A - Optic fiber monitoring device for shell component stress - Google Patents
Optic fiber monitoring device for shell component stress Download PDFInfo
- Publication number
- CN103162876A CN103162876A CN 201110406902 CN201110406902A CN103162876A CN 103162876 A CN103162876 A CN 103162876A CN 201110406902 CN201110406902 CN 201110406902 CN 201110406902 A CN201110406902 A CN 201110406902A CN 103162876 A CN103162876 A CN 103162876A
- Authority
- CN
- China
- Prior art keywords
- groove
- optical fiber
- mould component
- monitoring device
- component stress
- 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.)
- Pending
Links
Images
Abstract
The invention discloses an optic fiber monitoring device for shell component stress. The optic fiber monitoring device for the shell component stress comprises a first groove which is formed in a shell component, and A-side deformation teeth and B-side deformation teeth are respectively arranged on two opposite faces in the first groove, wherein the A-side deformation teeth and the B-side deformation teeth correspond to each other in a staggered mode. A first signal optical fiber is clamped between the A-side deformation teeth and the B-side deformation teeth of two opposite sides of the first groove. The first signal optical fiber is connected with a test unit which is connected with a processing unit. Adhesion agents are filled in the first groove. A protective skin is covered on the exterior of the first groove. The optic fiber monitoring device for the shell component stress not only has a good protective effect, but also can detect stress changes when structure is changed, and has distributed monitoring ability.
Description
Technical field
The present invention relates to fiber stress strain sensing device, particularly relate to a kind of optical fiber monitoring device of mould component stress.
Background technology
Intelligence structure is the focus of the outer research of Now Domestic, it is sensing element, driving element and control system to be combined in matrix material consist of, and has broad application prospects at aspects such as aerospace flight vehicle, nuclear reactor, naval vessel, submarine, oceanographic engineering and bridges.Sensing element in intelligence structure mainly contains electromagnetism, acoustics, chemistry, mechanics sensor, biology sensor, optical fiber, piezoelectric ceramics, piezopolymer, strain ga(u)ge etc., and Fibre Optical Sensor is a very important direction.Fibre Optical Sensor is divided into again distributed and quasi-distributed, quasi-distributed fiber-optic grating sensor, the optical fiber micro-bending sensor of comprising; Distributed sensor comprises Brillouin scattering Fibre Optical Sensor, fiber Raman sensor, both with respect to other sensors have anti-electromagnetic interference (EMI), lightweight, precision is high, the life-span is long, the plurality of advantages such as high temperature resistant, but it installs difficulty, monitoring equipment is expensive, and these have all limited and have promoted the use of.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency of the prior art, a kind of optical fiber monitoring device of mould component stress is provided.The optical fiber monitoring device of this mould component stress namely has good protective effect to sensor fibre; can detect the variation of stress again when structural change; and have multiplexing capability, and adopt light source-luminous power tester or light to be suitable for reflectometer as proving installation, the low precision of cost is high.Make optical fiber stress monitoring device of the present invention have long service life, precision is high, purposes is wide characteristics.It is simple in structure, easy to use, measuring accuracy is high, Measurement sensibility and validity is strong, production cost is low, is convenient to promote the use of.
for achieving the above object, the technical solution used in the present invention is: the optical fiber monitoring device of mould component stress, it is characterized in that: comprise the first groove that is distributed on mould component, be mounted with respectively A side distortion tooth and the B side distortion tooth of interlaced correspondence on relative two sides in the first groove, and accompany first signal optical fiber between the A side distortion tooth on the relative two sides of the first groove and B side distortion tooth, described first signal optical fiber and test cell join, described test cell connects processing unit, be filled with cementing agent in described the first groove, the outside of described the first groove is coated with the protection covering.
The optical fiber monitoring device of above-mentioned mould component stress is characterized in that: parallelly on described mould component be laid with side by side many first grooves.
The optical fiber monitoring device of above-mentioned mould component stress, it is characterized in that: be laid with the second groove on described mould component, be mounted with respectively A side distortion tooth and the B side distortion tooth of interlaced correspondence on relative two sides in the second groove, and accompany secondary signal optical fiber between the A side distortion tooth on the relative two sides of the second groove and B side distortion tooth, described secondary signal optical fiber and test cell join, described test cell connects processing unit, and the second groove and the first groove are one greater than zero degree, less than the angles of 180 degree.
The optical fiber monitoring device of above-mentioned mould component stress is characterized in that: described the first groove is positioned at the upper surface layer of mould component, and described the second groove is positioned at the mould component undersurface layer.
The optical fiber monitoring device of above-mentioned mould component stress is characterized in that: described the second groove outside is coated with the protection covering.
The present invention compared with prior art has the following advantages:
1, in the optical fiber monitoring device of mould component stress, because optical fiber is preset in groove, so have inborn protection structure, the embedding survival rate of sensor fibre significantly improved, thereby greatly reduce the deployment cost of sensor fibre and the construction cost of mould component;
2, combine due to sensor fibre and mould component, make the STRESS VARIATION that sensor fibre can the Real-Time Monitoring mould component, and do not affect the matrix strength of mould component, be easy to use and promote;
3, when mould component is damaged, can real-time monitor damaged part and size thereof, for further taking measures in time to provide information;
4, in many cases, described mould component is not plate shaped, all according to the hydrodynamic force principle design, can adopt equally monitoring method of the present invention to carry out omnibearing monitoring as the shell on the wing of aircraft, naval vessel, guarantees safety.
In sum, the present invention is simple in structure, reasonable in design, processing and fabricating convenient and use-pattern is flexible, highly sensitive, result of use is good, do not affect the characteristic of mould component, reached again the purpose of monitoring, made device of the present invention have better precision, longer serviceable life and purposes widely.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Description of drawings
Fig. 1 is the structural representation of the present invention's the first embodiment.
Fig. 2 is the A-A cut-open view in Fig. 1.
Fig. 3 is the structural representation of the present invention's the second embodiment.
Fig. 4 is the structural representation of the present invention's the 3rd embodiment.
Fig. 5 is the B-B cut-open view in Fig. 4.
Fig. 6 is the C-C cut-open view in Fig. 4.
Description of reference numerals:
The 1-extended fiber; 4-the first groove; 4-1-A side distortion tooth;
4-2-B side distortion tooth; The 5-test cell; 6-first signal optical fiber;
The 7-processing unit; 8-secondary signal optical fiber; 9-the second groove;
The 10-mould component; 12-protects covering.
Embodiment
The optical fiber monitoring device of a kind of mould component stress as shown in Figure 1 and Figure 2, be included in and be distributed with many first grooves 4 that are parallel to each other on mould component 10, the A side distortion tooth 4-1 and the B side distortion tooth 4-2 that have respectively interlaced correspondence on the relative two sides of the first groove 4, and accompany first signal optical fiber 6 between the A side distortion tooth 4-1 on the relative two sides of the first groove 4 and B side distortion tooth 4-2, first signal optical fiber 6 connects test cell 5 by extended fiber 1, connects processing unit 7 in test cell 5 back.
when the distortion of mould component 10 broadens the width of the first groove 4 or narrows down, make the distance between the distortion tooth on the relative two sides of the first groove 4 also can become large or diminish, thereby make the bending curvature of the first signal optical fiber 6 that is held on the distortion between cog diminish or become large, this makes again the bending loss of first signal optical fiber 6 diminish or becomes large, make the power of the light signal of transmission in first signal optical fiber 6 become large or diminish, this variation can be detected and result is transferred to processing unit 7 by test cell 5, processing unit 7 calculates the distortion size of mould component 10, if what test cell 5 adopted is optical time domain reflectometer, can detect the position of distortion, reach the purpose of distributed monitoring.
Preferably, be filled with cementing agent in described the first groove 4 and cementing agent different from the Young modulus of mould component 10 materials.
Preferably, described cementing agent Young modulus is less than the Young modulus of mould component 10 materials.
Preferably, described cementing agent has waterproof, moisture-proof role.
Preferably, described mould component 10 materials are foamed material, compound substance.
Preferably, when the temperature expansion coefficient of the temperature expansion coefficient of described mould component 10 materials and distortion teeth material not simultaneously, when temperature raises, it is large that the width of the first groove 4 becomes, and the height of distortion tooth can increase, but because both temperature expansion coefficients are different, causes the variation of the distance between A side distortion tooth 4-1 and B side distortion tooth 4-2, thereby the case of bending that makes first signal optical fiber 6 changes and the loss variation occurs, can monitor thus the temperature variation of mould component.
Preferably, described first signal optical fiber 6 can adopt the special optical fibers such as thin footpath optical fiber, carbon coated optical fiber, washing optical fiber, with the serviceable life of extended fiber.
Preferably, be filled with greasy for preventing water in described the first groove 4, thereby better protective effect be provided for first signal optical fiber 6.
Embodiment 2
As shown in Figure 3, in the present embodiment, as different from Example 1: be coated with protection covering 12 on the first groove 4, prevent the damage of outer bound pair first signal optical fiber 6.In the present embodiment, the structure of remainder, annexation and principle of work are all identical with embodiment 1.
Embodiment 3
As Fig. 4, Fig. 5 and shown in Figure 6, in the present embodiment, as different from Example 1: the upper and lower surface of mould component 10 is mounted with respectively the first groove 4 and the second groove 9, the A side distortion tooth 4-1 and the B side distortion tooth 4-2 that have respectively interlaced correspondence on relative two sides in two grooves, and meal does not accompany first signal optical fiber 6 and secondary signal optical fiber 8, the first groove 4 and the second groove 9 are 90 degree angles, thereby can monitor the random variation situation of mould component 10.
In the present embodiment, the structure of remainder, annexation and principle of work are all identical with embodiment 1.
The above; it is only preferred embodiment of the present invention; be not that the present invention is imposed any restrictions, every according to the technology of the present invention essence to any simple modification, change and equivalent structure transformation that above embodiment does, all still belong in the protection domain of technical solution of the present invention.
Claims (5)
1. the optical fiber monitoring device of mould component stress, it is characterized in that: comprise the first groove (4) that is distributed on mould component, be mounted with respectively A side distortion tooth (4-1) and the B side distortion tooth (4-2) of interlaced correspondence on relative two sides in the first groove (4), and be out of shape between tooth (4-2) in the A side distortion tooth (4-1) on the relative two sides of the first groove (4) and B side and accompany first signal optical fiber (6), described first signal optical fiber (6) joins with test cell (5), described test cell (5) connects processing unit (7), be filled with cementing agent in described the first groove (4), the outside of described the first groove (4) is coated with protection covering (12).
2. the optical fiber monitoring device of mould component stress according to claim 1, is characterized in that: parallel many first grooves (4) that are laid with side by side on described mould component.
3. the optical fiber monitoring device of mould component stress according to claim 1, it is characterized in that: be laid with the second groove (9) on described mould component, be mounted with respectively A side distortion tooth (4-1) and the B side distortion tooth (4-2) of interlaced correspondence on relative two sides in the second groove (9), and be out of shape between tooth (4-2) in the A side distortion tooth (4-1) on the relative two sides of the second groove (9) and B side and accompany secondary signal optical fiber (8), described secondary signal optical fiber (8) joins with test cell (5), described test cell (5) connects processing unit (7), and the second groove (9) is one greater than zero degree with the first groove (4), angle less than 180 degree.
4. the optical fiber monitoring device of mould component stress according to claim 3, it is characterized in that: described the first groove (4) is positioned at the upper surface layer of mould component, and described the second groove (9) is positioned at the mould component undersurface layer.
5. the optical fiber monitoring device of mould component stress according to claim 3 is characterized in that: described the second groove (9) outside is coated with protection covering (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110406902 CN103162876A (en) | 2011-12-08 | 2011-12-08 | Optic fiber monitoring device for shell component stress |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110406902 CN103162876A (en) | 2011-12-08 | 2011-12-08 | Optic fiber monitoring device for shell component stress |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103162876A true CN103162876A (en) | 2013-06-19 |
Family
ID=48586149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110406902 Pending CN103162876A (en) | 2011-12-08 | 2011-12-08 | Optic fiber monitoring device for shell component stress |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103162876A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105222936A (en) * | 2015-11-02 | 2016-01-06 | 天津师范大学 | For long based stress sensor and the using method of Ship Structure |
| CN103837333B (en) * | 2014-02-12 | 2016-06-01 | 北京航天时代光电科技有限公司 | A kind of aircraft cabin body buries the method for Fibre Optical Sensor in advance |
| CN106402262A (en) * | 2016-11-11 | 2017-02-15 | 中国人民解放军海军工程大学 | Stiffness-adjustable magnetic vibration isolator with quasi zero stiffness |
| CN107490326A (en) * | 2017-07-28 | 2017-12-19 | 北京航天控制仪器研究所 | A kind of method of optical fiber sensing network figuration implantation body structure |
| CN111486880A (en) * | 2020-04-07 | 2020-08-04 | 南京航空航天大学 | Molding self-monitoring intelligent composite material and monitoring method thereof |
-
2011
- 2011-12-08 CN CN 201110406902 patent/CN103162876A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103837333B (en) * | 2014-02-12 | 2016-06-01 | 北京航天时代光电科技有限公司 | A kind of aircraft cabin body buries the method for Fibre Optical Sensor in advance |
| CN105222936A (en) * | 2015-11-02 | 2016-01-06 | 天津师范大学 | For long based stress sensor and the using method of Ship Structure |
| CN106402262A (en) * | 2016-11-11 | 2017-02-15 | 中国人民解放军海军工程大学 | Stiffness-adjustable magnetic vibration isolator with quasi zero stiffness |
| CN107490326A (en) * | 2017-07-28 | 2017-12-19 | 北京航天控制仪器研究所 | A kind of method of optical fiber sensing network figuration implantation body structure |
| CN107490326B (en) * | 2017-07-28 | 2019-06-18 | 北京航天控制仪器研究所 | A kind of method of optical fiber sensing network figuration implantation body structure |
| CN111486880A (en) * | 2020-04-07 | 2020-08-04 | 南京航空航天大学 | Molding self-monitoring intelligent composite material and monitoring method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7781725B2 (en) | Optical fiber based sensor system suitable for monitoring remote aqueous infiltration | |
| CN103162876A (en) | Optic fiber monitoring device for shell component stress | |
| JP6139026B2 (en) | FBG sensor for measuring maximum distortion, method for manufacturing and using the same | |
| EP2128571B1 (en) | Fiberoptic strain sensor with distributed strain coupling | |
| US20070196059A1 (en) | Tape-shaped optical fiber cable | |
| CN107121158B (en) | A kind of internal enclosed cantilever beam fiber-optic grating sensor | |
| CN202720369U (en) | Distributed strain and temperature monitoring optical cable laid along object surface | |
| CN103674083B (en) | High-velocity particles impact test system | |
| CN110319949B (en) | Distributed temperature strain sensing optical cable and measuring method | |
| US20180252556A1 (en) | Distributed pressure, temperature, strain sensing cable | |
| GB2459975A (en) | Optical fibre sensor | |
| KR20110122443A (en) | Package for filmed optical-fiber bragg grating sensor which can evaluate multi-axial strain | |
| KR101135513B1 (en) | Optical fiber sensor for measurement of fire and movements | |
| KR101498381B1 (en) | System for monitoring three-dimension shape of pipe-structure using fiber bragg grating sensor | |
| Vendittozzi et al. | Application of an FBG sensors system for structural health monitoring and high performance trimming on racing yacht | |
| Yamazaki et al. | Optical strain gauge-based on a hetero-core fiber macro-bending sensor | |
| CN204101777U (en) | The platypelloid type band-shaped sensing optical cable of monitor temperature and strain simultaneously | |
| CN201903415U (en) | Six-dimension force sensing device | |
| CN202692951U (en) | Fiber bragg grating bending sensor for monitoring stress deformation of flexible protective screen | |
| CN202330787U (en) | High-temperature/high-pressure resistant well-logging distributed sensing optical cable outside oil tube in oil well | |
| CN205785094U (en) | A kind of positive tetrahedron optical fibre grating three-dimensional strain detecting structure | |
| CN113960328A (en) | Sensing device and method for sensing two-dimensional flow velocity and two-dimensional acceleration by using same | |
| KR101001104B1 (en) | Device attaching fiber bragg gratingFBGsensors to PTFE membrane for monitoring of the movement of the spatial structure and method attaching FBG sensor to PTFE membrane | |
| Güemes | Fiber Optics Strain Sensors | |
| Cho et al. | Effects of bonding layer characteristics on strain transmission and bond fatigue performance |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130619 |