CN106093208B - Perceptual structural performance degradation distributed type sensor fiber acoustic emission regulating and controlling device and method - Google Patents
Perceptual structural performance degradation distributed type sensor fiber acoustic emission regulating and controlling device and method Download PDFInfo
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- CN106093208B CN106093208B CN201610459474.1A CN201610459474A CN106093208B CN 106093208 B CN106093208 B CN 106093208B CN 201610459474 A CN201610459474 A CN 201610459474A CN 106093208 B CN106093208 B CN 106093208B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/14—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object using acoustic emission techniques
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/023—Solids
- G01N2291/0232—Glass, ceramics, concrete or stone
Abstract
The invention discloses a perceptual structural performance degradation distributed type sensor fiber acoustic emission regulating and controlling device which comprises an inner supporting body, mesh modules, fiber carrying modules and rotary connecting modules. A cylinder shape is formed by the inner supporting body, the mesh module and the fiber carrying module, the section of the inner supporting body is in a quadrangular inward concave shape with four inwards concave edges, the four faces of the inner supporting body are concave faces, the mesh modules with a plurality of meshes are arranged in the four concave faces of the inner supporting body, one fiber carrying module is arranged between every two adjacent mesh modules, and sensing fibers are arranged in the fiber carrying modules. According to the perceptual structural performance degradation distributed type sensor fiber acoustic emission regulating and controlling device and method, the multiform meshes such as the round meshes, the triangular meshes, the quadrangular meshes and the pentagonal meshes are used for forming acoustic emission co-cavity holes, and multistage time delay of the multiple acoustic emission wave co-cavity holes based on the distributed sensing fibers at the multistage physical size and monitoring at multi-acoustic-wave vibration frequency are constructed.
Description
Technical field
The present invention relates to perceptual structure performance degradation distributed sensing fiber acoustic emission regulation device and method, belong to water conservancy project
Journey monitoring structural health conditions field.
Background technology
Optical fiber sensing technology has been achieved for significant progress through the development of more than 30 years, occurs in that
Product and technology, also basic building define a more independent system, but continuous development and technology with society
Progress, the demand of optical fiber sensing technology is also continuously increased, and also present in performance parameter it is diversified, high-level become
Gesture, therefore, the present situation of optical fiber sensing technology can not still far meet actual needs, need to carry out substantial amounts of research work；
Acoustic emission signal is the impact that regional area is stressed concentration in material, and then quick release produces transient state bullet
Property ripple phenomenon, its Jing often betide material internal crackle produce and develop when, can be with detecting structure body by acoustic emission
Interior micro-structure is damaged；
It is for traditional piezoelectric ceramics acoustic emission detection method, its technology maturation, simple to operate, but drawback is also more, than
As system is more huge, cable is excessive, anti-electrical measurement interference performance is poor, for this purpose, generating a kind of new Fiber Bragg Grating FBG
Type acoustic emission detection system, its sensitivity is high, anti-electromagnetic interference capability is strong, but this kind of method there is also more serious asking
Topic, which still belongs to current more traditional point type monitoring, far can not meet current big structure body, wide monitoring range,
The problems such as long-distance transmissions, it is therefore desirable to develop a kind of acoustic emission detection system of new distributed sensing fiber type, grinding
When making this kind of achievable distributed acoustic emission detection, need to research and develop a kind of corollary apparatus blended with the system first finally
Complete to develop the acoustic emission detection system of distributed sensing fiber type, for secondary operations and the laying of sensor fibre are actual works
Necessary devices in journey, for this purpose, have developed a kind of perceptual structure performance degradation distributed sensing fiber acoustic emission regulation device and
Method.
The content of the invention
Goal of the invention：In order to overcome the deficiencies in the prior art, the present invention to provide a kind of perceptual structure performance degradation
Distributed sensing fiber acoustic emission regulation device and method, are sent out using circle, triangle, corner, five jiaos of multi-form mesh composition sound
Common lumen pore is penetrated, the multistage time for constructing the common lumen pore of many acoustic emission waves under multistage physical size based on distributed sensing fiber prolongs
Late with monitoring under many acoustic vibration frequencies.
Technical scheme：To solve above-mentioned technical problem, a kind of perceptual structure performance degradation distributed sensing light of the present invention
Fine acoustic emission regulation device, including inner supporting body, mesh module, carry fiber module and turn gang mould block, the inner supporting body, mesh mould
Block and fiber module composition cylindrical shape is carried, the section of the inner supporting body is the corner concave shaped of four side indents, inner supporting body
Four faces are concave surface, and the mesh module of several mesh, two neighboring mesh mould are equipped with four concave surfaces of inner supporting body
Load fiber module is provided between block, is carried.
Preferably, the mesh module includes carrier, carrier is provided with the mesh along sensor fibre axis, each load
Body is provided with the one kind in the common chamber mesh of triangle, the common chamber mesh of circle, the common chamber mesh in four sides, five jiaos of common chamber mesh.
Preferably, the mesh form on each carrier is different, the common chamber mesh of triangle, the common chamber mesh of circle, the common chamber in four sides
Mesh and five jiaos of common chamber mesh are arranged according to sequence counter-clockwise.
Preferably, the load fiber module holds fine platform comprising barrier blocks, closing cock, dual-fiber-channel and semicircle, it is described partly
Circle is held fine platform and is connected with carrier, and semicircle holds, and two sensor fibres are provided with dual-fiber-channel,
Semicircle holds the both sides at the top of fine platform and has been respectively articulated with closing cock, and two closing cocks are locked by barrier blocks.
Preferably, the semicircle hold be provided with fine platform separate two sensor fibres every fine wall.
Preferably, it is described every fine wall be vacuum heat-insulating plate.
Preferably, also comprising gang mould block is turned, the gang mould block that turns comprising first base and second base, lead to by first base
Cross first collar be connected with folding axle extension post, second base is connected with axle extension post is rolled over by second collar, first collar and the
Locking device is equipped with two collars, the upper end of first base is laid with the fine curved hole of the first load, and the upper end of second base is laid with
Second carries fine curved hole, and folding axle extension post is provided with inner via hole, is provided with and curves folding axle in inner via hole, and the upper surface for curving folding axle is provided with
Fixing plug.
A kind of installation method of above-mentioned perceptual structure performance degradation distributed sensing fiber acoustic emission regulation device, including
Following steps：
The first step, configures each part, is total to chamber mesh, triangles altogether chamber by five jiaos according to order counterclockwise around the interior body that props up
Altogether mesh order in chamber is configured altogether chamber mesh and four sides for mesh, circle, and prop up in being sequentially located at the lower right corner of body, the upper right corner,
The upper left corner, the lower left corner；
Second step, lays down barrier blocks, opens the closing cock of both sides around closing cock rotating shaft, along leading to double optical fiber every fine wall
Road is deployed to the bottom that semicircle holds fine platform, and eight sensor fibres are deployed to four dual-fiber-channels according to two one group of form
In；
The closing cock of both sides is closed by the 3rd step around closing cock rotating shaft, presses closing cock joint, barrier blocks are passed through
Every the upper end of fine wall, will be fixed at the closing cock closure of both sides, according to obstruct of the same manner by its elsewhere on fine wall
Block is fixed, and is finally completed mesh module and carries the laying of fiber module；
4th step, by mesh module and is carrying fiber module and is building component and be likely to occur bending position, will by mesh mould
Block and carry the component that fiber module builds and be placed into the fine curved hole of the first load and second and carry at fine curved hole, according to engineering need rotate curved
Turnover axle, and then drive the rotation of first base and second base so that first carry fine curved hole and second carry fine curved hole it
Between shape it is at a certain angle, after fixing plug be inserted in curve in folding axle, and folding axle will be curved fix, and then it will be fine to fix the first load
Curved hole and second carries the angle between fine curved hole.
Beneficial effect：The perceptual structure performance degradation distributed sensing fiber acoustic emission regulation device of the present invention, is curving
Place is laid with and turns gang mould block, its flexible, simple to operate, conveniently moving of laying, can realize procedure, automation application, this
Bright pioneering proposition constitutes acoustic emission lumen pore altogether using circle, triangle, corner, five jiaos of multi-form mesh, constructs multistage physics chi
Monitor under the multistage time delay and many acoustic vibration frequencies of the common lumen pore of many acoustic emission waves under degree based on distributed sensing fiber
Regulation device and method, thinking of the present invention is novel, technical field that is merging for sensor fibre and acoustic emission opens new thinking
With idea, with great scientific research value and engineer applied dissemination, significant increase distributed sensing fiber sound is sent out
Penetrate application and Generalization Ability of the technology in Practical Project.
Description of the drawings
Fig. 1 is mesh module and the structural representation for carrying fiber module；
Fig. 2 is the structural representation for turning gang mould block.
Specific embodiment
In order to be able to preferably to the present invention practical engineering application be described, it is special select certain High Concrete Dam as a example by,
The region of the 150 × 150m of upstream face of the High Concrete Dam is used, due to region to be measured size and need emphasis to supervise
The needs of survey, now determine that the GJJV models of 8 500m length tightly cover sensor fibre.
In the present embodiment, as depicted in figs. 1 and 2, a kind of perceptual structure performance degradation distributed sensing fiber acoustic emission is adjusted
Control device, including mesh module, carry fiber module, turn gang mould block, mesh module with carry closing of the fiber module by arc-shaped structure
Plug rotating shaft 402 is connected, and is laid with the place of curving and turns gang mould block, tightly covers sensor fibre place with fixed GJJV models for bending
Mesh module and carry fiber module.
In the present embodiment, chamber mesh 407 has 16 to the triangle that section is equilateral triangle, the length of side is 2cm altogether, and lines up
The form of four rows, in the interior upper right semicircle for propping up body, section is that the common chamber mesh 403 of circle of circular, a diameter of 3cm has three
Row, by wait circular section 12 cavitys constitute, in the interior upper left semicircle for propping up body, section be equilateral tetragon, the length of side
The common chamber mesh 404 in four sides for 2.5cm has 4 rows, is made up of 12 cavitys of equilateral corner tee section, props up body positioned at interior
Lower-left semicircle in, section be equilateral pentagon, the length of side for five jiaos of 1.5cm altogether chamber mesh 408 be to be cut by the equilateral pentagon of 3 rows
12 cavity compositions in face, in the interior bottom right semicircle for propping up body.The triangle that section is equilateral triangle, the length of side is 2cm is altogether
Chamber mesh 407, section be circular, a diameter of 3cm circle altogether chamber mesh 403, section be equilateral tetragon, the length of side be 2.5cm
Four sides, five jiaos of common chamber mesh 408 that chamber mesh 404, section is equilateral pentagon altogether, the length of side is 1.5cm are according to order counterclockwise
Successively with body 409 propped up in the concave shaped of corner be connected.
In the present embodiment, the common chamber mesh 407 of triangle, the common chamber mesh 403 of circle, 404, five jiaos of common chamber mesh of the common chamber mesh in four sides
408 are located on four size and shape identical carriers.12 circles are total to 403,16 triangles of chamber mesh chamber mesh 407,12 altogether
Four sides altogether 404,12 five jiaos of chamber mesh chamber mesh 408 altogether, due to mesh cross sectional shape each other and spread pattern it is all each
Differ, when acoustic emission wave is perceived, the common chamber mesh 407 of the common chamber mesh 403, triangle of circle, the common chamber mesh 404 in four sides and five jiaos are altogether
Chamber mesh 408 is produced different time delays and resonance frequency of sound wave respectively.
In the present embodiment, fiber module component composition is carried comprising four identicals, and the angle between four components are adjacent is
90 °, in each component, the closing cock 401 of circular cross-section form is symmetrically distributed in the both sides every fine wall 435 that length is 8cm,
It is 8cm every fine wall 435 that 405 centre position of dual-fiber-channel of a diameter of 5cm is length, every fine wall 435 be VIP plates, diameter
405 periphery of dual-fiber-channel for 5cm is that the semicircle of a diameter of 12cm holds fine platform 406, the closing cock rotating shaft of circular cross-section form
The both sides of 402 closing cocks 401 for being located at circular cross-section form, the closing cock 401 of circular cross-section form is positioned at a diameter of 12cm's
Semicircle holds the upper end of fine platform 406, and closing cock 401 is rotated around closing cock rotating shaft 402, can lead to double optical fiber of a diameter of 5cm
Road 405 is pressed into the semicircle of a diameter of 12cm and holds in fine platform 406, to be symmetrically distributed in length be 8cm every fine wall 435 both sides
After the closing cock 401 of circular cross-section form is closed, by the barrier blocks 400 of length 2cm, width 1cm detain as length for 8cm every
The outer end of fine wall 435, will be fixed at 401 closure of closing cock.Barrier blocks 400 can be the structure of similar screw, by two
Individual closing cock locking.
In the present embodiment, height 50cm, the folding axle extension post 410 of width 5cm are located at the first base of bottom width 30cm
The centre position of 412 and bottom width 30cm second base 411, first base 412 is by first collar 417 and folding axle extension
Post 410 connects, and second base 411 is connected with axle extension post 410 is rolled over by second collar 418, first collar 417 and second collar
Locking device is equipped with 418, the upper end of first base 412 is laid with the fine curved hole 413 of the first load of diameter 30cm, bottom width
In the first base 412 of 30cm, the fine curved hole 413 of the first load of diameter 30cm is used to place mesh module and carries fiber module composition group
One end of part, the upper end of the second base 411 of bottom width 30cm are laid with the fine curved hole of the second load 414 of diameter 30cm, and second
The fine curved hole 414 of the second load on base 411 is used to place mesh module and carries the other end of fiber module constituent components, diameter 3cm,
The outer rim for curving folding axle 415 of height 60cm is connected with the inner edge of height 50cm, the folding axle extension post 410 of width 5cm, is curved
Folding axle 415 is located at the centre position of folding axle extension post 410, by rolling over axle extension post 410 by the fine curved hole of the first load of diameter 30cm
The 413 and diameter 30cm fine curved hole 414 of the second load is connected with the folding axle 415 that curves of diameter 3cm, height 60cm, by rotating
Folding axle extension post 410, first carries fine curved hole 413 and second carries and shape has a certain degree between fine curved hole 414, by locking dress
Put and first collar 417 and second collar 418 are locked on folding axle extension post 410, and diameter 3.8cm, the fixation of height 1.5cm
Thromboembolism 416 curves folding axle 415 beyond folding axle extension post positioned at diameter 3cm, the upper end surface for curving folding axle 415 of height 60cm
410 part has screw thread, and the fixing plug 416 of diameter 3.8cm, height 1.5cm is screwed into the upper end for curving folding axle 415
Afterwards, can by between second load in the first of diameter 30cm the load fine curved hole 413 and diameter 30cm fine curved hole 414 with it is arbitrarily angled enter
Row is fixed.
A kind of a kind of operation side of perceptual structure performance degradation distributed sensing fiber acoustic emission regulation device described above
Method, comprises the following steps：
(1) select region to be measured, determine regulation device layout scheme
As selected region to be measured is upstream face, and engineering is in Construction State, therefore, ensureing every construction
On the premise of operation is not all interfere with each other with impact, determine that 150 × 150m regions to be measured are tightly covered using the GJJV models of 8 500m length
Sensor fibre, due to be one's respective area be emphasis monitored area, in effectively monitoring length 400m section all using mesh module and load
Fiber module tightly covers sensor fibre to 8 GJJV models and configures, and from from the route passed through by sensor fibre, one has at 11
Bending, needs 11 to turn gang mould block altogether；
(2) assemble each part, complete initial configuration
Turn the order of gang mould block again to perceptual structure performance degradation distributed sensing according to first mesh module rear bearing fiber module
Optical fiber acoustic emission regulation device is assembled, by section be equilateral triangle, the length of side for 2cm 16 triangles altogether chamber mesh 407,
Section be circular, a diameter of 3cm 12 circles altogether chamber mesh 403, section be equilateral tetragon, the length of side be 12 four of 2.5cm
Side altogether chamber mesh 404, section be equilateral pentagon, the length of side for 12 five jiaos of 1.5cm altogether chamber mesh 408 according to counterclockwise suitable
Sequence successively with body 409 propped up in the concave shaped of corner be connected；
(3) encapsulate sensor fibre, initially laid
The GJJV models of 8 500m length are tightly covered into the dual-fiber-channel 405 that sensor fibre is deployed to a diameter of 5cm successively
In, closing cock rotating shaft 402 is rotated afterwards the closing cock 401 of both sides is closed, by barrier blocks 400 through every the upper end of fine wall 435, incite somebody to action
It is fixed at 401 closure of closing cock of both sides, the mesh module for having configured and load fiber module is placed into and turns to enter in gang mould block
Row is initial to be laid；
(4) determine knee, complete final regulation and control laying
According to the concrete condition of this Practical Project, determine, often place lays and turns gang mould block
What method was just as, it is first determined at 11, the fine curved hole 413 of the first load of diameter 30cm and second load of diameter 30cm are fine curved
Angle between hole 414 is all 60 °, rolls over axle 415, and then drives bottom width by rotating diameter 3cm, curving for height 60cm
The rotation of the second base 411 of the first base 412 and bottom width 30cm of degree 30cm, so that first load of diameter 30cm
60 ° of angle is formed between the fine curved hole of second load of fine curved hole 413 and diameter 30cm 414, after by diameter 3.8cm, height 1.5cm
Fixing plug 416 be inserted in diameter 3cm, height 60cm and curve in folding axle 415, and will curve folding axle 415 and fix, and then fixed
First carries fine curved hole 413 and the second angle carried between fine curved hole 414, needs laying to lay where turning gang mould block at 11
Into afterwards, and then, complete final regulation and control laying.
The above is only the preferred embodiment of the present invention, it should be pointed out that：For the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (8)
1. a kind of perceptual structure performance degradation distributed sensing fiber acoustic emission regulation device, it is characterised in that：Including inner support
Body, mesh module, carry fiber module and turn gang mould block, the inner supporting body, mesh module and carry fiber module composition cylindrical shape,
The section of the inner supporting body is the corner concave shaped of four side indents, and four faces of inner supporting body are concave surface, the four of inner supporting body
The mesh module of several mesh is equipped with individual concave surface, load fiber module between two neighboring mesh module, is provided with, fiber module is carried
It is interior comprising sensor fibre.
2. perceptual structure performance degradation distributed sensing fiber acoustic emission regulation device according to claim 1, its feature
It is：The mesh module includes carrier, and carrier is provided with the mesh along sensor fibre axis direction, and each carrier is provided with
One kind in the common chamber mesh of triangle, the common chamber mesh of circle, the common chamber mesh in four sides, five jiaos of common chamber mesh.
3. perceptual structure performance degradation distributed sensing fiber acoustic emission regulation device according to claim 2, its feature
It is：Mesh form on each carrier is different, and the common chamber mesh of chamber mesh, circle, the common chamber mesh in four sides and five jiaos are common altogether for triangle
Chamber mesh is arranged according to sequence counter-clockwise.
4. the perceptual structure performance degradation distributed sensing fiber acoustic emission regulation device according to claim 3., its feature
It is：The load fiber module holds fine platform comprising barrier blocks, closing cock, dual-fiber-channel and semicircle, and the semicircle holds fine platform and carries
Body connects, and semicircle holds, is provided with two sensor fibres, holds fine platform top in semicircle in dual-fiber-channel
The both sides in portion have been respectively articulated with closing cock, and two closing cocks are locked by barrier blocks.
5. perceptual structure performance degradation distributed sensing fiber acoustic emission regulation device according to claim 4, its feature
It is：The semicircle hold be provided with fine platform separate two sensor fibres every fine wall.
6. perceptual structure performance degradation distributed sensing fiber acoustic emission regulation device according to claim 5, its feature
It is：It is described every fine wall be vacuum heat-insulating plate.
7. perceptual structure performance degradation distributed sensing fiber acoustic emission regulation device according to claim 6, its feature
It is：Comprising first base and second base, first base is connected with folding axle extension post the gang mould block that turns by first collar,
Second base is connected with axle extension post is rolled over by second collar, is equipped with locking device on first collar and second collar, and first
The upper end of base is laid with the fine curved hole of the first load, and the upper end of second base is laid with the fine curved hole of the second load, and folding axle extension post is provided with
Inner via hole, is provided with inner via hole and curves folding axle, and the upper surface for curving folding axle is provided with fixing plug.
8. a kind of installation of perceptual structure performance degradation distributed sensing fiber acoustic emission regulation device as claimed in claim 7
Method, it is characterised in that comprise the following steps：
The first step, configures each part, is total to chamber mesh, triangles altogether chamber net by five jiaos according to order counterclockwise around the interior body that props up
The common chamber mesh order of chamber mesh and four sides is configured altogether for hole, circle, and is sequentially located at the interior lower right corner for propping up body, the upper right corner, a left side
Upper angle, the lower left corner；
Second step, lays down barrier blocks, opens the closing cock of both sides around closing cock rotating shaft, along every fine wall by dual-fiber-channel cloth
The bottom that semicircle holds fine platform is set to, eight sensor fibres are deployed in four dual-fiber-channels according to two one group of form；
The closing cock of both sides is closed by the 3rd step around closing cock rotating shaft, presses closing cock joint, by barrier blocks through every fibre
The upper end of wall, will be fixed at the closing cock closure of both sides, enters according to barrier blocks of the same manner by its elsewhere on fine wall
Row is fixed, and is finally completed mesh module and is carried the laying of fiber module；
4th step, by mesh module and carrying fiber module and build component and be likely to occur bending position, will by mesh module and
The component for carrying fiber module structure is placed at the fine curved hole of the first load and the fine curved hole of the second load, is rotated according to the needs of engineering and is curved folding
Axle, and then the rotation of first base and second base is driven, so that first carries shape between fine curved hole and the fine curved hole of the second load
It is at a certain angle, after fixing plug be inserted in curve in folding axle, and folding axle will be curved fix, and then fix the fine curved hole of the first load
And second carry the angle between fine curved hole.
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| CN201610459474.1A CN106093208B (en) | 2016-06-22 | 2016-06-22 | Perceptual structural performance degradation distributed type sensor fiber acoustic emission regulating and controlling device and method |
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| JP2008032587A (en) * | 2006-07-31 | 2008-02-14 | Meidensha Corp | Ae sensor using interference-type optical fiber, and partial discharge measuring device by ae sensor |
| CN102944613B (en) * | 2012-11-16 | 2015-04-01 | 中国科学院半导体研究所 | Detecting and positioning system for optical fiber acoustic emission |
| FR3015698B1 (en) * | 2013-12-20 | 2022-10-14 | Turbomeca | ENDOSCOPE AND METHOD FOR ITS USE |
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