CN205080084U - A sensor for $monitoring crackle speed - Google Patents
A sensor for $monitoring crackle speed Download PDFInfo
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- CN205080084U CN205080084U CN201520857999.1U CN201520857999U CN205080084U CN 205080084 U CN205080084 U CN 205080084U CN 201520857999 U CN201520857999 U CN 201520857999U CN 205080084 U CN205080084 U CN 205080084U
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Abstract
The utility model relates to a sensor for $monitoring crackle speed, the sensor is including the information sensing layer that sets gradually, information acquisition layer and protective layer, the information sensing layer is insulating nature material, and it is pasted on by the monitoring piece, the information acquisition layer belongs to the resistive material, including five group, external lead wire solder joint and five resistance pads side by side, the sensor level is pasted at the edge by the monitoring piece, external lead wire solder joint welding lead pad, the setting of external lead wire solder joint is in the information acquisition layer, the adhesion area territory of sensor sets up the crackle district of sensor, five parallel resistance pad welding 1k omega resistance. The beneficial effects of the utility model are that: through the sensing structure surface crack length change, convert it into detecting element sensor that resistance variation measures measured object spare surface crack, real -time supervision perception part can be realized carrying out the real -time supervision crack initiation and the extension condition to the structure position.
Description
Technical field
The utility model belongs to the monitoring sensor of a kind of structural health (damage), is specifically related to a kind of sensor for monitoring crack speed.
Background technology
Information smart coat is applied to structural danger position according to the feature of component by the monitoring sensor of prior art, smart coat comprises the sensing layer be arranged on component matrix, sensing layer is by conducting particles, modifier forms, thickness is tens nanometers between tens microns, driving layer is provided with between sensing layer and component matrix, layer is driven to be divided into organic material to drive layer, inorganic material drives layer, inorganic material drives layer to be made up of inorganic non-conducting material, organic material drives layer to be made up of organic non-conducting material, layer and component matrix and sensing layer is driven to be solidified into one, the thickness of layer is driven to be between tens microns to hundreds of micron, protective seam is outside equipped with at sensing layer, protective seam is made up of non-conducting material.Have in laboratory time enough and space to realize, and coat information smart coat at existing equipment structural danger position by the very difficult realization of Time and place condition restriction, smart coat difficult quality guarantee, can not widespread use on existing.And whether monitoring sensor generally can only monitor and have crackle to produce in prior art, can not monitoring crack spreading rate.
Utility model content
In order to solve the problems referred to above that prior art exists, the utility model provides a kind of sensor for monitoring crack speed, by perceptual structure surface crack length variations, and be converted into resistance change to measure the detecting element sensor of measured object surface crack, be structural crack real-time monitoring system information Perception parts.
The technical scheme that the utility model adopts is:
For a sensor for monitoring crack speed, its improvements are: described sensor comprises the information sensing layer set gradually, information acquisition layer and protective seam;
Described information sensing layer is Ins. ulative material, and it is pasted onto on monitored; Described information acquisition layer belongs to resistive material, comprises five and alignment group, external lead wire solder joint and five resistance pads arranged side by side; Described sensor levels is pasted onto the edge of monitored, external lead wire solder joint welding lead pad, and described external lead wire solder joint is arranged in information acquisition layer; The sticking area of described sensor is arranged on the cracked zone of described sensor; Described five resistance pad solder 1k Ω resistance arranged side by side.
Preferably, described information sensing layer is made up of polymkeric substance, conducting particles and tackifier, and the body structure surface of described tackifier and monitored solidifies and combines together, and described polymkeric substance sputters at the surface of conducting particles.
Preferably, described protective seam is made up of polyimide film and AB glue or hardware; The polyimide film of described protective seam is arranged on the outermost layer of described sensor, and described sensor is fixed by AB glue or hardware.
The beneficial effects of the utility model are:
1. crack monitoring sensor is bonded on structural member, can realizes carrying out Real-Time Monitoring fissuring rate situation to structural member position, and calculate crack growth rate; This sensor solves monitoring crack spreading rate problem;
2., when pair enclosed construction parts must carry out Crack Damage monitoring, crack monitoring sensor can be assembled in after on enclosed construction crackle part, then carry out position installation, solve the not measurable problem of current conventional flaw detection means;
3. detect time need not decomposition texture position and sealing position, need not remove enamelled coating, detection more convenient and quicker compared with traditional detection technique, engineering adaptability is strong;
4. select the characterization parameter that resistance value variable is monitored as structural crack, signal extraction, collection, disposal system are effectively reliable.
Accompanying drawing explanation
Fig. 1 is the cross-sectional view of crack monitoring sensor of the present utility model;
Fig. 2 is the vertical bar shaped crack monitoring sensor schematic diagram that the utility model provides.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail.
The following description and drawings illustrate specific embodiments of the present utility model fully, to enable those skilled in the art to put into practice them.Other embodiments can comprise structure, logic, electric, process and other change.Embodiment only represents possible change.Unless explicitly requested, otherwise independent assembly and function are optional, and the order of operation can change.The part of some embodiments and feature can be included in or replace part and the feature of other embodiments.The scope of embodiment of the present utility model comprises the gamut of claims, and all obtainable equivalent of claims.In this article, these embodiments of the present utility model can be represented with term " utility model " individually or always, this is only used to conveniently, and if in fact disclose the utility model more than, be not the scope that automatically will limit this application be any single utility model or utility model design.
Crack monitoring sensor is by perceptual structure surface crack length variations, and be converted into resistance change to measure the detecting element sensor of measured object surface crack, structural crack real-time monitoring system information Perception parts, by information sensing layer, information acquisition layer and protective seam composition; Sensor is resistive material, and it is pasted onto on monitored; As shown in Figure 1, described information sensing layer is Ins. ulative material to its diagrammatic cross-section, and it is pasted onto on monitored; Described information acquisition layer belongs to resistive material, comprises five and alignment group, external lead wire solder joint and five resistance pads arranged side by side; Described sensor levels is pasted onto the edge of monitored, external lead wire solder joint welding lead pad, and described external lead wire solder joint is arranged in information acquisition layer; The sticking area of described sensor is arranged on the cracked zone of described sensor; Described five resistance pad solder 1k Ω resistance arranged side by side.Information sensing layer is made up of polymkeric substance, conducting particles and tackifier, the body structure surface of described tackifier and monitored solidifies and combines together, described polymkeric substance sputters at the surface of conducting particles, solidified by tackifier and monitored body structure surface and combine together, body structure surface stress deformation or when cracking, information sensing layer activation bit acquisition layer is out of shape together, and the resistance of acquisition layer can produce a variable, for structural crack real-time monitoring system provides crack information; Protective seam is made up of polyimide film and AB glue or hardware; The polyimide film of described protective seam is arranged on the outermost layer of described sensor, and described sensor is fixed by AB glue or hardware.Determine according to different testing environments protection requirement.
As shown in Figure 2,1 position welding external lead wire, 2 position welding 1k Ω resistance (consider that the resistance of electrolytic copper foil own is very little, now calculate and ignore);
By the edge of sensor mount at monitored;
When crackle produces, the electrolytic copper foil of sensor ruptures successively, and now resistance changes, and situation of change is as follows:
Resistance R0=1000 Ω/5=200 Ω during flawless;
When crackle produce and expand to Article 1 electrolytic copper foil break time, resistance R1=1000 Ω/4=250 Ω, now judges that crack propagation distance is as amm, and now writing time is t1, crack growth rate v1=a/t1;
When crackle produce and expand to Article 2 electrolytic copper foil break time, resistance R2=1000 Ω/3=333 Ω, now judge that crack propagation distance is as (a+b) mm, now writing time is t2, this interval crack growth rate v2=b/ (t2-t1);
When crackle produce and expand to Article 3 electrolytic copper foil break time, resistance R3=1000 Ω/2=500 Ω, now judge that crack propagation distance is as (a+b+c) mm, now writing time is t3, this interval crack growth rate v3=c/ (t3-t2);
When crackle produce and expand to Article 4 electrolytic copper foil break time, resistance R4=1000 Ω/1=1000 Ω, now judge that crack propagation distance is as (a+b+c+d) mm, now writing time is t4, this interval crack growth rate v4=d/ (t4-t3);
When crackle produce and expand to Article 5 electrolytic copper foil break time, resistance ∞, now judge that crack propagation distance is as (a+b+c+d+e) mm, now writing time is t5, this interval crack growth rate v5=e/ (t5-t4);
Average spreading rate=(v1+v2+v3+v4+v5)/5.
The utility model is not limited to above-mentioned preferred forms; anyone can draw other various forms of products under enlightenment of the present utility model; no matter but any change is done in its shape or structure; every have identical with the application or akin technical scheme, all drops within protection domain of the present utility model.
Claims (3)
1. for a sensor for monitoring crack speed, it is characterized in that: described sensor comprises the information sensing layer set gradually, information acquisition layer and protective seam;
Described information sensing layer is Ins. ulative material, and it is pasted onto on monitored; Described information acquisition layer belongs to resistive material, comprises five and alignment group, external lead wire solder joint and five resistance pads arranged side by side; Described sensor levels is pasted onto the edge of monitored, external lead wire solder joint welding lead pad, and described external lead wire solder joint is arranged in information acquisition layer; The sticking area of described sensor is arranged on the cracked zone of described sensor; Described five resistance pad solder 1k Ω resistance arranged side by side.
2. a kind of sensor for monitoring crack speed according to claim 1, it is characterized in that: described information sensing layer is made up of polymkeric substance, conducting particles and tackifier, the body structure surface of described tackifier and monitored solidifies and combines together, and described polymkeric substance sputters at the surface of conducting particles.
3. a kind of sensor for monitoring crack speed according to claim 1, is characterized in that: described protective seam is made up of polyimide film and AB glue or hardware; The polyimide film of described protective seam is arranged on the outermost layer of described sensor, and described sensor is fixed by AB glue or hardware.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520857999.1U CN205080084U (en) | 2015-10-30 | 2015-10-30 | A sensor for $monitoring crackle speed |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520857999.1U CN205080084U (en) | 2015-10-30 | 2015-10-30 | A sensor for $monitoring crackle speed |
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| CN205080084U true CN205080084U (en) | 2016-03-09 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109187857A (en) * | 2018-08-22 | 2019-01-11 | 中国飞机强度研究所 | A kind of crackle monitoring device and method based on silver powder coating sensor |
| CN109556958A (en) * | 2018-12-07 | 2019-04-02 | 武汉科技大学 | A kind of test method of simple check line crack starter location and spreading rate at first |
| CN111289578A (en) * | 2020-03-27 | 2020-06-16 | 西北大学 | Method for detecting microcracks of ultrahigh-pressure container |
| CN115247999A (en) * | 2022-07-01 | 2022-10-28 | 江南大学 | Grid sensor and method for crack propagation length monitoring based on direct writing printing |
| CN115791460A (en) * | 2022-11-18 | 2023-03-14 | 中国矿业大学 | Sensor for propagation speed of blasting crack in rock material and testing method thereof |
-
2015
- 2015-10-30 CN CN201520857999.1U patent/CN205080084U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109187857A (en) * | 2018-08-22 | 2019-01-11 | 中国飞机强度研究所 | A kind of crackle monitoring device and method based on silver powder coating sensor |
| CN109556958A (en) * | 2018-12-07 | 2019-04-02 | 武汉科技大学 | A kind of test method of simple check line crack starter location and spreading rate at first |
| CN111289578A (en) * | 2020-03-27 | 2020-06-16 | 西北大学 | Method for detecting microcracks of ultrahigh-pressure container |
| CN115247999A (en) * | 2022-07-01 | 2022-10-28 | 江南大学 | Grid sensor and method for crack propagation length monitoring based on direct writing printing |
| CN115791460A (en) * | 2022-11-18 | 2023-03-14 | 中国矿业大学 | Sensor for propagation speed of blasting crack in rock material and testing method thereof |
| CN115791460B (en) * | 2022-11-18 | 2023-08-22 | 中国矿业大学 | Sensor for crack propagation speed of internal blasting of rock material and testing method thereof |
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