CN111880024A - Device and method for testing conductivity change in flexible deformation process of metal fiber - Google Patents
Device and method for testing conductivity change in flexible deformation process of metal fiber Download PDFInfo
- Publication number
- CN111880024A CN111880024A CN202010610122.8A CN202010610122A CN111880024A CN 111880024 A CN111880024 A CN 111880024A CN 202010610122 A CN202010610122 A CN 202010610122A CN 111880024 A CN111880024 A CN 111880024A
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- metal fiber
- linear guide
- electrode pressing
- guide rail
- flexible deformation
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- 239000002184 metal Substances 0.000 title claims abstract description 47
- 239000000835 fiber Substances 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000012360 testing method Methods 0.000 title claims abstract description 26
- 238000003825 pressing Methods 0.000 claims abstract description 26
- 230000033001 locomotion Effects 0.000 claims abstract description 17
- 239000004696 Poly ether ether ketone Substances 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 3
- 229920006351 engineering plastic Polymers 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 229920002530 polyetherether ketone Polymers 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 abstract description 5
- 238000009661 fatigue test Methods 0.000 abstract description 2
- 239000004020 conductor Substances 0.000 description 6
- 238000005259 measurement Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012784 inorganic fiber Substances 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/003—Environmental or reliability tests
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
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- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention relates to a device and a method for testing the conductivity change in the flexible deformation process of metal fibers, wherein two ends of the metal fibers are respectively fixed on a linear guide rail capable of realizing the motion of X, Y axis two dimensions or X, Y, Z axis three dimensions through an electrode pressing sheet and an insulating base, the middle part of the metal fibers is bent by controlling the movement of the guide rail, and the resistance change caused by the deformation of the metal fibers is collected and recorded by an ohmmeter connected with the electrode pressing sheet. The invention can realize the real-time monitoring of the conductivity of various deformation motions in the three-dimensional space; can carry out reciprocating multi-group movement and simultaneously realize the fatigue test of the electrical property of the metal fiber.
Description
Technical Field
The invention belongs to the field of metal fiber testing, relates to a conductivity testing technology, and particularly relates to a device and a method for testing conductivity change in a flexible deformation process of metal fibers.
Background
The earliest production of metal fibers began in the united states in the late 70's of the 20 th century due to the inability of organic and inorganic fibers to meet the rapidly growing needs of industry and technology, and the research on metal fiber manufacturing and its use began to be highly invested in developed countries. However, due to the large technical difficulty and complex process, the research on the metal fiber is still in the development stage, the conductivity of the metal fiber is obviously changed in the fiberization process of the metal, and the conductivity is also changed in the flexible deformation process of the metal fiber, so the research on the conductivity change in the flexible deformation process has wide application to the fields of filtration, sound absorption, surface combustion, electrodes, fabrics, electromagnetic shielding, reinforced compounding and the like of the metal fiber.
The traditional conductivity measurement method is a four-wire method and a van der Waals method at present, but due to the characteristic that the conductivity of the metal fiber can change under different degrees of flexible deformation, the traditional method is not suitable for the metal fiber under the dynamic flexible deformation environment, and an experimental method which is more suitable for measuring the conductivity of the metal fiber in the flexible deformation process is needed.
CN103777078A discloses a test device and a test method for direct current resistance of a cable conductor, wherein the test device comprises a double-arm bridge, a sample holder and a connecting wire for electrically connecting the double-arm bridge and the sample holder; the sample holder comprises a base with a scale, a voltage electrode clamp and a current electrode clamp; the voltage electrode clamp and the current electrode clamp are fixed on the base in a sliding mode. The device and the method of the invention adopt the input method of improving the length of the tested sample and the layered current to test the direct current resistance of the conductor, and can reduce the influence of the contact resistance on the test result, thereby avoiding the unreal test data of the direct current resistance of the conductor and improving the test accuracy.
CN103675450A discloses a conductor resistance testing device, which includes a support plate with a sliding groove, a resistance wire fixing device, a potential electrode clamp and a current electrode clamp, wherein the potential electrode clamp is fixed on the support plate by a base, the current electrode clamp is fixed on the support plate by a base, the potential electrode clamp is arranged above the sliding groove, and the current electrode clamp is arranged above the sliding groove. The electrode clamp position of the invention can be adjusted, the distance between the potential electrode clamp and the current electrode clamp can be adjusted according to the section size of the conductor resistance wire to be actually tested, the test is flexible, and the test result is accurate and reliable.
The conductor of above-mentioned two patent tests, its cross sectional dimension and length all change, and the technical problem who solves with this application is different, and this application will guarantee that metal fiber's cross sectional dimension and length are unchangeable, only surveys the influence of flexible deformation process to resistance.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, provides the device and the method for testing the conductivity change in the flexible deformation process of the metal fiber, and can realize the real-time monitoring of the conductivity of various deformation motions in a three-dimensional space.
The technical scheme adopted by the invention for solving the technical problem is as follows:
the device for testing the conductivity change in the flexible deformation process of the metal fiber comprises linear guide rails, insulating bases, electrode pressing sheets and an ohmmeter, wherein two Y-axis linear guide rails are mounted on a sliding block of an X-axis linear guide rail, the two insulating bases are fixedly mounted on each Y-axis linear guide rail at intervals, one electrode pressing sheet is fixedly mounted on the top surface of each insulating base, the metal fiber to be tested is fixed through the four electrode pressing sheets, and the four electrode pressing sheets are respectively connected to the four-wire ohmmeter.
Moreover, the insulating base is made of engineering plastics, polyether-ether-ketone, organic glass, ceramics and other materials.
Moreover, the electrode pressing sheet is made of an elastic metal sheet.
And the X-axis linear guide rail and the two Y-axis linear guide rails are connected to a controller, and the motion direction and distance of the guide rails are controlled by the controller.
A method for testing conductivity change in a metal fiber flexible deformation process is characterized in that two ends of a metal fiber are fixed on a linear guide rail capable of achieving motion of X, Y-axis two dimensions or X, Y, Z-axis three dimensions through an electrode pressing sheet and an insulating base respectively, the middle of the metal fiber is bent by controlling the movement of the guide rail, and resistance change caused by metal fiber deformation is collected and recorded by an ohmmeter connected with the electrode pressing sheet.
The invention has the advantages and positive effects that:
1. monitoring an output resistance signal in real time;
2. the combination of the metal pressing sheet and the insulating base is adopted, so that the length of the sample is not changed in the deformation process, and the measurement precision is ensured;
3. the electric signal is led out through the metal pressing sheet, so that good electric contact with the sample can be ensured;
4. the numerical control linear guide rail is moved by adopting the cross motor, so that the automatic programming test can be realized while the sample is protected from being broken due to excessive stretching;
5. the real-time monitoring of the conductivity of various deformation motions in the three-dimensional space can be realized;
6. can carry out reciprocating multi-group movement and simultaneously realize the fatigue test of the electrical property of the metal fiber.
Drawings
Fig. 1 is a front view of the present invention.
Fig. 2 is a top view of fig. 1.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments, which are illustrative only and not limiting, and the scope of the present invention is not limited thereby.
The device for testing the conductivity change in the flexible deformation process of the metal fiber comprises linear guide rails, insulating bases 3, electrode pressing sheets 2, a four-wire ohm meter 6 and a guide rail controller, wherein two Y-axis linear guide rails 4 are installed on a sliding block of an X-axis linear guide rail 1, the two insulating bases are fixedly installed on each Y-axis linear guide rail at intervals, and one electrode pressing sheet is fixedly installed on the top surface of each insulating base. The metal fiber 5 to be measured is fixed by four electrode pressing sheets. The four electrode pads are respectively connected to a four-wire ohm meter.
The basic method of measurement is a four-wire method, and a high-precision four-wire ohmmeter is used for measurement; the metal fiber to be measured is placed in a precise stepping cross motor moving numerical control linear guide rail group with XY axis movement, the guide rail group consists of two Y axis linear guide rails and an X axis linear guide rail, and the movement of the error smaller than 0.05mm in one direction can be realized by the matching of the stepping motor on each guide rail and the high-precision ball screw.
Two fixed insulating bases are respectively installed on the two Y-axis linear guide rails, the insulating bases can be made of engineering plastics, polyether-ether-ketone, organic glass, ceramics and the like, each insulating base is matched with one electrode pressing sheet and used for fixing a sample on the base, the electrode pressing sheets adopt elastic metal sheets, one ends of the electrode pressing sheets are connected with the insulating bases through screws, the sample positions are fixed through the electrode pressing sheets, flexible deformation of the sample is guaranteed, and the distance between two measuring points on the same base is fixed.
Three stepping motors of the whole module group are connected with the same multi-module controller, so that the movement in a manual mode or an automatic mode can be realized, and particularly, when the whole metal fiber is controlled in a programmable mode to move back and forth on a sliding rail, samples between two electrodes in the middle are subjected to various bending deformations, but the lengths of the samples cannot be changed. The purpose of monitoring the resistance change in real time on the premise of not damaging the sample is ensured.
The using method of the device comprises the following steps:
1. fixing the metal fiber to be tested on an insulating base as shown in the figure, and clamping an electrode pressing sheet;
2. connecting a four-wire method ohmmeter;
3. setting the sample length in the controller;
4. programming a flexible motion pattern in the controller;
5. and (4) moving the guide rail and recording the conductivity parameters in real time.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the inventive concept, and these changes and modifications are all within the scope of the present invention.
Claims (5)
1. The utility model provides a test metal fiber flexible deformation in-process electric conductive property change's device which characterized in that: the device comprises linear guide rails, insulating bases, electrode pressing sheets and an ohmmeter, wherein two Y-axis linear guide rails are arranged on a sliding block of an X-axis linear guide rail, the two insulating bases are fixedly arranged on each Y-axis linear guide rail at intervals, one electrode pressing sheet is fixedly arranged on the top surface of each insulating base, metal fibers to be measured are fixed through the four electrode pressing sheets, and the four electrode pressing sheets are respectively connected to the four-wire ohmmeter.
2. The apparatus for testing conductivity change during metal fiber flexible deformation according to claim 1, wherein: the insulating base is made of engineering plastics, polyether-ether-ketone, organic glass, ceramics and other materials.
3. The apparatus for testing conductivity change during metal fiber flexible deformation according to claim 1, wherein: the electrode pressing sheet is an elastic metal sheet.
4. The apparatus for testing conductivity change during metal fiber flexible deformation according to claim 1, wherein: the X-axis linear guide rail and the two Y-axis linear guide rails are connected to a controller, and the motion direction and distance of the guide rails are controlled through the controller.
5. A method for testing the conductivity change in the flexible deformation process of metal fibers is characterized in that: the two ends of the metal fiber are respectively fixed on a linear guide rail capable of realizing X, Y-axis two-dimensional or X, Y, Z-axis three-dimensional motion through an electrode pressing sheet and an insulating base, the middle of the metal fiber is bent by controlling the movement of the guide rail, and the resistance change caused by the deformation of the metal fiber is collected and recorded by an ohmmeter connected with the electrode pressing sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010610122.8A CN111880024A (en) | 2020-06-30 | 2020-06-30 | Device and method for testing conductivity change in flexible deformation process of metal fiber |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010610122.8A CN111880024A (en) | 2020-06-30 | 2020-06-30 | Device and method for testing conductivity change in flexible deformation process of metal fiber |
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| CN111880024A true CN111880024A (en) | 2020-11-03 |
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| CN202010610122.8A Pending CN111880024A (en) | 2020-06-30 | 2020-06-30 | Device and method for testing conductivity change in flexible deformation process of metal fiber |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113933625A (en) * | 2021-09-28 | 2022-01-14 | 华中科技大学 | Extensible general material and device electrical performance testing system |
| CN117292635A (en) * | 2023-11-27 | 2023-12-26 | 深圳市康凌源科技有限公司 | Conduction testing method, device and equipment for curved flexible screen and storage medium |
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| CN102364325A (en) * | 2011-10-09 | 2012-02-29 | 中国科学院金属研究所 | System and method for testing bending fatigue reliability of low dimensional conducting material |
| CN103513111A (en) * | 2013-09-06 | 2014-01-15 | 国家电网公司 | System and method for testing electric conductivity of metal wire |
| CN106767379A (en) * | 2016-12-30 | 2017-05-31 | 常州亿晶光电科技有限公司 | A kind of testing equipment of solar panel web plate deformation |
| CN106841895A (en) * | 2016-12-27 | 2017-06-13 | 昆山国显光电有限公司 | A kind of RTA reliability test assembly of flexible display screen |
| CN108500093A (en) * | 2018-05-11 | 2018-09-07 | 浙江大学 | A kind of adjustable variable curvature pipe fitting pane bending apparatus |
| CN208676445U (en) * | 2018-07-09 | 2019-04-02 | 东莞市龙达鞋材有限公司 | A kind of vamp cloth Flexing Apparatus of multistation |
| CN110634619A (en) * | 2019-09-11 | 2019-12-31 | 无锡锡洲电磁线有限公司 | Repair tool for transposed conductor |
-
2020
- 2020-06-30 CN CN202010610122.8A patent/CN111880024A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102364325A (en) * | 2011-10-09 | 2012-02-29 | 中国科学院金属研究所 | System and method for testing bending fatigue reliability of low dimensional conducting material |
| CN103513111A (en) * | 2013-09-06 | 2014-01-15 | 国家电网公司 | System and method for testing electric conductivity of metal wire |
| CN106841895A (en) * | 2016-12-27 | 2017-06-13 | 昆山国显光电有限公司 | A kind of RTA reliability test assembly of flexible display screen |
| CN106767379A (en) * | 2016-12-30 | 2017-05-31 | 常州亿晶光电科技有限公司 | A kind of testing equipment of solar panel web plate deformation |
| CN108500093A (en) * | 2018-05-11 | 2018-09-07 | 浙江大学 | A kind of adjustable variable curvature pipe fitting pane bending apparatus |
| CN208676445U (en) * | 2018-07-09 | 2019-04-02 | 东莞市龙达鞋材有限公司 | A kind of vamp cloth Flexing Apparatus of multistation |
| CN110634619A (en) * | 2019-09-11 | 2019-12-31 | 无锡锡洲电磁线有限公司 | Repair tool for transposed conductor |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113933625A (en) * | 2021-09-28 | 2022-01-14 | 华中科技大学 | Extensible general material and device electrical performance testing system |
| CN113933625B (en) * | 2021-09-28 | 2022-07-05 | 华中科技大学 | Extensible general material and device electrical performance testing system |
| CN117292635A (en) * | 2023-11-27 | 2023-12-26 | 深圳市康凌源科技有限公司 | Conduction testing method, device and equipment for curved flexible screen and storage medium |
| CN117292635B (en) * | 2023-11-27 | 2024-03-26 | 深圳市康凌源科技有限公司 | Conduction testing method, device and equipment for curved flexible screen and storage medium |
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