CN202758002U - Resistivity testing device - Google Patents

Resistivity testing device Download PDF

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Publication number
CN202758002U
CN202758002U CN 201220408556 CN201220408556U CN202758002U CN 202758002 U CN202758002 U CN 202758002U CN 201220408556 CN201220408556 CN 201220408556 CN 201220408556 U CN201220408556 U CN 201220408556U CN 202758002 U CN202758002 U CN 202758002U
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CN
China
Prior art keywords
pressing plate
detecting electrode
measurement device
measured
adjusting pressing
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Expired - Lifetime
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CN 201220408556
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Chinese (zh)
Inventor
管建敏
徐敏军
钱鑫
马洪波
张永刚
李德宏
张娜
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Ningbo Institute of Material Technology and Engineering of CAS
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Ningbo Institute of Material Technology and Engineering of CAS
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Priority to CN 201220408556 priority Critical patent/CN202758002U/en
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Abstract

The utility model discloses a resistivity testing device, comprising a bottom plate, a fixing frame which is fixedly arranged on the bottom plate and used for fixing an element to be tested, a guiding column fixed on the bottom plate, a regulating pressure plate with a scale arranged on the guiding column, detecting electrodes which are arranged on the regulating pressure plate and used for contacting the element to be tested, and a resistor detecting device connected with the detecting electrodes. According to the resistivity testing device, the resistance of the element to be tested can be measured at the required measurement length, the resistivity can be calculated through the formular at one time, the resistance of the same element to be tested can be measured at different measurement lengths, and the resistivities at different measurement lengths can be calculated through the formula, thereby ensuring the accuracy of the test results. Integrally, the resistivity testing device disclosed by the utility model has the advantages of simple structure and convenient use, and can accurately measure the resistivity of carbon fibers.

Description

A kind of resistivity measurement device
Technical field
The utility model relates to resistivity measurement device field, is specifically related to a kind of resistivity measurement device for the detection of carbon fiber resistance rate.
Background technology
Carbon fiber has pulling strengrth and stretch modulus is high, density is low, endurance, the characteristics such as corrosion-resistant, therefore, strengthen body and prepare various compound substances such as carbon/carbon compound material, carbon fiber enhancement resin base composite material, carbon fibre reinforced ceramics based composites etc. through being commonly used for.Aero-Space, Leisure Sport and the various field such as civilian have been contained in the application of carbon fiber.
Carbon fiber has certain electric conductivity, although its electric conductivity is not so good as traditional metallic conductor, as a kind of nonmetallic conductor, carbon fiber has obtained paying close attention to widely.The electric conductivity of carbon fiber also becomes an index of carbon fiber performance.At present, main testing standard is space industry industry standard QJ 3074-98 carbon fiber and composite material resistance rate method of testing thereof in the time testing carbon fiber resistance is forthright, although in this standard, simply introduced principle and the computing formula of the test of carbon fiber resistance rate, but domesticly be seen in report without special proving installation at present, and the final test result of different mechanism for testing there are differences also.
Application publication number is that the Chinese invention patent application of CN102288825A discloses a kind of method for measuring resistance value of aluminum layer on surface of carbon fiber composite material workpiece, may further comprise the steps: 1) existing carbon fibre composite being made thickness is the exemplar of 2 ~ 4mm, draws the corresponding relation curve of aluminum layer thickness and resistance value behind the spraying aluminium lamination; 2) use ultrasound thickness instrument, measure the thickness of aluminum layer on surface of carbon fiber composite material workpiece to be measured; 3) one-tenth-value thickness 1/10 is put in the corresponding relation curve of aluminum layer thickness and resistance value, can be obtained corresponding resistance value.Although this technical scheme can be inferred the resistance value of aluminium lamination by the thickness of measuring material, this technical scheme can not be applicable to detect the test of carbon fiber resistance rate.
Existing carbon fiber resistance rate is generally measured the resistance of carbon fiber by the gauge outfit of universal meter, again by ruler measurement length, then calculate resistivity by formula, but universal meter and ruler are measured at twice, be difficult to guarantee the accuracy measured, simultaneously, to the resistance under the same carbon fiber measurement different length, measuring process is more loaded down with trivial details.
The utility model content
The utility model provides a kind of resistivity measurement device, can under required to be measured measurement length, measure its resistance, once can calculate resistivity by formula, can under different measuring length, measure its resistance to same to be measured, calculate resistivity under the different measuring length by formula, thereby guarantee the accuracy of test result.
A kind of resistivity measurement device comprises base plate, is fixedly installed on the described base plate fixed mount that is used for fixing to be measured, is fixed on guidepost on the described base plate, is arranged on the adjusting pressing plate with scale on the described guidepost, is arranged on the described adjusting pressing plate and is used for and the detecting electrode of described to be measured contact and the resistor detecting device that is connected with described detecting electrode.
Can select carbon fiber etc. for to be measured, to be measured is fixed on the fixed mount, then as required, regulate distance between the detecting electrode take the scale of regulating on the pressing plate as benchmark, mobile adjusting pressing plate is so that the detecting electrode contact measured part on the adjusting pressing plate again, measure resistance value by resistor detecting device, try to achieve at last to be measured resistivity by formula.
Described resistor detecting device can adopt prior art, and such as universal meter etc., universal meter generally can oneself be selected detecting pattern as required, when detecting resistance, generally can provide voluntarily certain electric current, detects.For further improving the accuracy that detects, as preferably, described resistor detecting device comprise for detection of measure under the length to be measured voltage voltage table and for detection of the reometer of measuring under the length to be measured electric current, described voltage table and reometer all are connected with described detecting electrode, and the two ends of described fixed mount are equipped with current terminal.Current terminal is connected with power supply, provide electric current by current terminal for measuring under the length to be measured, obtain magnitude of voltage and current value by voltage table and reometer, calculate by magnitude of voltage and current value and measure under the length to be measured resistance, thereby be conducive to improve the accuracy of resistance measurement.
Further preferred, guidepost one end is installed on the described base plate, and the other end is provided be used to the erecting frame that described voltage table and reometer are installed, so that apparatus structure is compact, so that voltage table and reometer reading are more directly perceived.Described guidepost passes described adjusting pressing plate and cooperates with described adjusting platen gap; Described erecting frame be provided with through described erecting frame and with the setting nut of described erecting frame threaded engagement, described adjusting pressing plate passes in the bar section of described setting nut, the end that described adjusting pressing plate passes in the bar section of described setting nut is provided with restriction protrusion, thereby threaded engagement that can be by setting nut and erecting frame is so that regulate pressing plate and move up and down along guidepost.
As preferably, described adjusting pressing plate is provided with the detecting electrode mounting rod, on the described detecting electrode mounting rod electrode regulating piece is installed, described electrode regulating piece and described detecting electrode mounting rod transition fit, described detecting electrode is installed on the described electrode regulating piece, can in the situation that the application of force so that detecting electrode move.Further preferred, the scale on the described adjusting pressing plate is arranged on described adjusting pressing plate near described detecting electrode mounting rod one side, convenient distance of regulating between the detecting electrode.
Compared with prior art, the utlity model has following advantage:
The utility model resistivity measurement device, comprise base plate, be fixedly installed on the fixed mount on the base plate, be fixed on the guidepost on the base plate, be arranged on the adjusting pressing plate with scale on the guidepost, be arranged on to regulate on the pressing plate and be used for and the detecting electrode of to be measured contact and the resistor detecting device that is connected with detecting electrode, can select carbon fiber etc. for to be measured, can be under the measurement length of required carbon fiber measuring voltage and electric current, once can calculate resistivity by formula, to same carbon fiber can be under different measuring length measuring voltage and electric current, calculate resistivity under the different measuring length by formula, thereby guarantee the accuracy rate of test.
The utility model resistivity measurement device, in the preferred version, with respect to prior art, such as universal meter, resistor detecting device of the present utility model comprises voltage table and reometer, the two ends of fixed mount are equipped with current terminal, current terminal is connected to power supply, carbon fiber provides electric current under the length in order to measure by current terminal, obtain magnitude of voltage and current value by voltage table and reometer, calculate the resistance of measuring carbon fiber under the length by magnitude of voltage and current value, thereby be conducive to improve the accuracy of resistance measurement.In the utility model resistivity measurement device, so that regulate pressing plate and move up and down along guidepost, it is simple in structure, and is easy to use by setting nut and erecting frame threaded engagement.Regulate pressing plate and be provided with the detecting electrode mounting rod, the electrode regulating piece is installed on the detecting electrode mounting rod, can in the situation that the application of force so that the detecting electrode on the electrode regulating piece move, simple in structure, easy to use.The scale of regulating on the pressing plate is arranged on the adjusting pressing plate near detecting electrode mounting rod one side, convenient distance of regulating between the detecting electrode.
The utility model resistivity measurement device on the whole, and is simple in structure, easy to use, resistivity that can the Measurement accuracy carbon fiber.
Description of drawings
Fig. 1 is the structural representation of the utility model resistivity measurement device.
Embodiment
Below in conjunction with accompanying drawing the utility model resistivity measurement device is described in further detail.
As shown in Figure 1, be the utility model resistivity measurement device, comprise base plate 1, be fixedly installed on the base plate 1 fixed mount 11 that is used for the fixed carbon fiber, be fixed on guidepost 3 on the base plate 1, be arranged on the adjusting pressing plate 2 with scale 8 on the guidepost 3, be arranged on to regulate and be used on the pressing plate 2 and the detecting electrode 10 of carbon fiber contact and the resistor detecting device that is connected with detecting electrode 10.
Resistor detecting device comprises for detection of the voltage table 7 of measuring the voltage of carbon fiber under the length with for detection of the reometer 4 of measuring the electric current of carbon fiber under the length, voltage table 7 is connected with reometer and all is connected with detecting electrode 10, the two ends of fixed mount 11 are equipped with current terminal, and current terminal is connected with power supply.Carbon fiber provides electric current under the length in order to measure by current terminal, obtains magnitude of voltage and current value by voltage table 7 and reometer 4, calculates the resistance of measuring carbon fiber under the length by magnitude of voltage and current value, thereby is conducive to improve the accuracy of resistance measurement.Guidepost 3 is two, and guidepost 3 one ends are installed on the base plate 1, and the other end be used for to be installed the erecting frame 5 of voltage table 7 and reometer 4, guidepost 3 pass regulate pressing plate 2 and with regulate pressing plate 2 clearance fit.Erecting frame 5 be provided with through erecting frame 5 and with the setting nut 6 of erecting frame 5 threaded engagement, the bar section of setting nut 6 passes and regulates pressing plate 2, the bar section of setting nut 2 passes an end of regulating pressing plate 2 and is provided with restriction protrusion, can be by setting nut 6 with erecting frame 5 threaded engagement so that regulate pressing plate 2 and move up and down along guidepost 3.
Regulate pressing plate 2 and be provided with detecting electrode mounting rod 12, electrode regulating piece 9 is installed on the detecting electrode mounting rod 12, electrode regulating piece 9 and detecting electrode mounting rod 12 transition fit, detecting electrode 10 is installed on the electrode regulating piece 9, detecting electrode 10 is two, electrode regulating piece 9 also is two accordingly, can in the situation that the application of force so that detecting electrode 10 move.The scale of regulating on the pressing plate 2 is arranged on adjusting pressing plate 2 near detecting electrode mounting rod 12 1 sides, convenient distance of regulating between two detecting electrodes 10.
The specific works principle of the utility model resistivity measurement device is as follows:
Carbon fiber to be measured is fixed on the fixed mount 11, then as required, to regulate scale 8 on the pressing plate 2 for the distance between two detecting electrodes 10 of benchmark adjusting, move by setting nut 6 again and regulate pressing plate 2 so that the detecting electrode 10 of regulating on the pressing plate 2 contacts carbon fibers, measure resistance value by resistor detecting device, try to achieve at last the resistivity of carbon fiber by formula.
Embodiment 1
Use the utility model resistivity measurement device that the resistivity of carbon fiber is tested.Get carbon fiber sample 300mm, applying on the current terminal that is fixed in fixed mount 11 in the some tension situation, according to the scale mark of regulating scale 8 on the pressing plate 2, adjust the distance between two electrode regulating pieces 9, thereby so that the distance between two detecting electrodes 10 is 85.04mm, adjust setting nut 6, adjusting pressing plate 2 is reduced gradually until the detecting electrode 10 on it touches carbon fiber sample to be measured; By adjusting power supply, so that the current value I of carbon fiber sample is stabilized in I0.05A, then read the magnitude of voltage of this moment.
Calculate the resistivity of testing sample according to following formula:
ρ f = U I × t ρ × L - 1 × 10 - 5
In the formula: ρ f-carbon fiber resistance rate, Ω/cm
Magnitude of voltage between U-electrode, V;
The current value that I-carbon fiber passes through, A;
The fiber number of t-carbon fiber sample, tex;
The volume density of ρ-carbon fiber, g/cm 3
The measurement length of L-carbon fiber (being 85.04mm).
As mentioned above, just can realize preferably the utility model device.In order to guarantee the accuracy of resistivity measurement, can readjust two distances (being the measurement length of carbon fiber) between the detecting electrode 10, to same carbon fiber can be under different measuring length measuring voltage and electric current, calculate resistivity under the different measuring length by formula, thereby guaranteed the accuracy of testing result.

Claims (6)

1. resistivity measurement device, it is characterized in that, comprise base plate, be fixedly installed on the described base plate fixed mount that is used for fixing to be measured, be fixed on guidepost on the described base plate, be arranged on the adjusting pressing plate with scale on the described guidepost, be arranged on the described adjusting pressing plate and be used for and the detecting electrode of described to be measured contact and the resistor detecting device that is connected with described detecting electrode.
2. resistivity measurement device according to claim 1, it is characterized in that, described resistor detecting device comprise for detection of measure under the length to be measured voltage voltage table and for detection of the reometer of measuring under the length to be measured electric current, described voltage table and reometer all are connected with described detecting electrode, and the two ends of described fixed mount are equipped with current terminal.
3. resistivity measurement device according to claim 2 is characterized in that, guidepost one end is installed on the described base plate, and the other end is provided be used to the erecting frame that described voltage table and reometer are installed.
4. resistivity measurement device according to claim 3 is characterized in that, described guidepost passes described adjusting pressing plate and cooperates with described adjusting platen gap;
Described erecting frame be provided with through described erecting frame and with the setting nut of described erecting frame threaded engagement, described adjusting pressing plate passes in the bar section of described setting nut, the end that described adjusting pressing plate passes in the bar section of described setting nut is provided with restriction protrusion.
5. resistivity measurement device according to claim 1, it is characterized in that, described adjusting pressing plate is provided with the detecting electrode mounting rod, on the described detecting electrode mounting rod electrode regulating piece is installed, described electrode regulating piece and described detecting electrode mounting rod transition fit, described detecting electrode is installed on the described electrode regulating piece.
6. resistivity measurement device according to claim 5 is characterized in that, the scale on the described adjusting pressing plate is arranged on described adjusting pressing plate near described detecting electrode mounting rod one side.
CN 201220408556 2012-08-17 2012-08-17 Resistivity testing device Expired - Lifetime CN202758002U (en)

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103604994A (en) * 2013-12-16 2014-02-26 苏州大学 Test method of electrode impedances of electrochemical power supply and electrochemical energy storage device and apparatus thereof
CN104597327A (en) * 2015-02-06 2015-05-06 厦门大学 Ceramic fiber resistivity testing method
CN104678181A (en) * 2015-03-23 2015-06-03 攀钢集团研究院有限公司 Method for measuring resistivity of steel rail
CN104865466A (en) * 2015-05-11 2015-08-26 江阴市纤维检验所 Conductive performance testing method and testing device for conductive filament
CN108490260A (en) * 2018-03-22 2018-09-04 佛山市熙华科技有限公司 A kind of resistivity detecting device of graphite product
CN109490678A (en) * 2018-12-29 2019-03-19 西安泰金工业电化学技术有限公司 A kind of adjustable interpolar away from Ni―Ti anode reinforcing life test device
CN109613315A (en) * 2018-11-12 2019-04-12 大同新成新材料股份有限公司 A kind of carbon brush resistivity measurement tooling and its test method
CN110146767A (en) * 2019-04-23 2019-08-20 江苏维尔兰电缆有限公司 It is a kind of for detecting the device of charge bearing detecting cable electric conductivity
CN114325103A (en) * 2021-12-27 2022-04-12 中钢新型材料股份有限公司 Carbon material thermal state resistivity nondestructive testing device and method
CN116953036A (en) * 2023-07-14 2023-10-27 珠海杨杋科技有限公司 Charging roller detection method and system
WO2024109603A1 (en) * 2022-11-24 2024-05-30 广东电网有限责任公司东莞供电局 Resistivity detection method, apparatus, and device

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103604994A (en) * 2013-12-16 2014-02-26 苏州大学 Test method of electrode impedances of electrochemical power supply and electrochemical energy storage device and apparatus thereof
CN103604994B (en) * 2013-12-16 2016-08-31 苏州大学 A kind of electrochemical power source and the method for testing of electrochemical energy storing device electrode impedance and device
CN104597327A (en) * 2015-02-06 2015-05-06 厦门大学 Ceramic fiber resistivity testing method
CN104678181A (en) * 2015-03-23 2015-06-03 攀钢集团研究院有限公司 Method for measuring resistivity of steel rail
CN104678181B (en) * 2015-03-23 2017-09-29 攀钢集团研究院有限公司 Rail resistance rate measuring method
CN104865466A (en) * 2015-05-11 2015-08-26 江阴市纤维检验所 Conductive performance testing method and testing device for conductive filament
CN108490260A (en) * 2018-03-22 2018-09-04 佛山市熙华科技有限公司 A kind of resistivity detecting device of graphite product
CN109613315A (en) * 2018-11-12 2019-04-12 大同新成新材料股份有限公司 A kind of carbon brush resistivity measurement tooling and its test method
CN109613315B (en) * 2018-11-12 2021-01-15 大同新成新材料股份有限公司 Use method of carbon brush resistivity testing tool
CN109490678A (en) * 2018-12-29 2019-03-19 西安泰金工业电化学技术有限公司 A kind of adjustable interpolar away from Ni―Ti anode reinforcing life test device
CN110146767A (en) * 2019-04-23 2019-08-20 江苏维尔兰电缆有限公司 It is a kind of for detecting the device of charge bearing detecting cable electric conductivity
CN114325103A (en) * 2021-12-27 2022-04-12 中钢新型材料股份有限公司 Carbon material thermal state resistivity nondestructive testing device and method
CN114325103B (en) * 2021-12-27 2024-04-12 赛迈科先进材料股份有限公司 Nondestructive testing device and method for thermal resistivity of carbon material
WO2024109603A1 (en) * 2022-11-24 2024-05-30 广东电网有限责任公司东莞供电局 Resistivity detection method, apparatus, and device
CN116953036A (en) * 2023-07-14 2023-10-27 珠海杨杋科技有限公司 Charging roller detection method and system

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Granted publication date: 20130227