CN102590260B - Heat-electric injury testing system of carbon fiber reinforced resin matrix composite material - Google Patents
Heat-electric injury testing system of carbon fiber reinforced resin matrix composite material Download PDFInfo
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- CN102590260B CN102590260B CN2012100453426A CN201210045342A CN102590260B CN 102590260 B CN102590260 B CN 102590260B CN 2012100453426 A CN2012100453426 A CN 2012100453426A CN 201210045342 A CN201210045342 A CN 201210045342A CN 102590260 B CN102590260 B CN 102590260B
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Abstract
The invention relates to a heat-electric injury testing system of a carbon fiber reinforced resin matrix composite material, comprising a damp heat box, a mechanical loading device of test pieces and a control device, wherein the mechanical loading device of the test pieces is arranged in the damp heat box, and parts of components in the control device are arranged on the mechanical loading device of the test pieces. The system provided by the invention can perform quantitative damp heat injury, electric current injury and united injury on the carbon fiber reinforced resin matrix composite material under functions of damp heat and electric current and also can accurately measure the dynamic changes of parameters such as electric resistance, temperature and strain of the carbon fiber reinforced resin matrix composite material under functions of heat and electric load. The system provided by the invention can meet the testing requirements of the test pieces with different sizes, is convenient in adjustment, can control and display the contact pressure, has a good software interface and a good data management function and provides an effective and reliable method for uncovering a failure mechanism of the carbon fiber reinforced resin matrix composite material under damp heat, electric current and heat-electric environments.
Description
Technical field
The invention belongs to the composite material test technical field, particularly relate to a kind of carbon fiber enhancement resin base composite material heat-electric injury test macro.
Background technology
Because carbon fiber enhancement resin base composite material has excellent mechanical property, the fields such as Aero-Space, wind-power electricity generation, building have therefore been started to be widely used in.In process, damp and hot is its common residing environment under arms.In addition, the factors such as electric current of thunder-strike current, induction current, static charge discharge generation usually directly act on composite structure, and with the hygrothermal environment factor interaction, result causes the permanance of structure significantly to reduce.Current most researcher only considers the mechanical behavior of this material under wet heat condition, but rarely has the report of mechanical behavior under heat-electric load acting in conjunction, and the latter is closer to the real duty status of material.In the document about the impact of damp and hot, electric current factor of publishing, during testing of materials, all hygrothermal environment and electric current environment are applied respectively, do not consider the reciprocation when both apply simultaneously, for the mechanical property after heat-electric injury, also only test one or two index, and do not carry out systematic study; The test macro adopted is very simple and crude, all is only applicable to the test specimen of specific dimensions, and the contact between test specimen and powered electrode can't accurately measure and control, and also can't gather simultaneously the parameter of the reaction material degree of impairments such as test specimen resistance, temperature, strain.Therefore, develop a kind of simple in structure, easy to adjust, adapt to multiple sample dimensions and require, can accurately show the contact size and can be captured in simultaneously the test macro that under heat-electric load, the parameters such as carbon fiber enhancement resin base composite material resistance, temperature, strain change, the inefficacy mechanism for research material under heat-electrical environment and the formulation tool of the safe service condition of material are of great significance.
Summary of the invention
In order to address the above problem, the object of the present invention is to provide a kind ofly can apply to the carbon fiber enhancement resin base composite material test specimen of sizes accurate contact and heat-electric load, measure simultaneously the carbon fiber enhancement resin base composite material heat of the situations of change such as resistance, temperature, strain of reflection material damage situation-electric injury test macro.
In order to achieve the above object, carbon fiber enhancement resin base composite material heat provided by the invention-electric injury test macro comprises damp heat box, test specimen machinery loading device and control device; Wherein the test specimen machinery loading device is arranged on the inside of damp heat box, and two test electrodes are installed on it; Part parts in control device are arranged on the test specimen machinery loading device, be used to current load and the faulted condition parameter gatherer process of controlling the carbon fiber enhancement resin base composite material test specimen.
Described test specimen machinery loading device comprises base, casing, two guide rails, two pull bars, stiff end steel bushing, stiff end electrode, sliding end steel bushing, sliding end electrode, leading screw, power sensor stand, conical gear group, main shaft and handwheels; Wherein base is that rectangle is tabular, is horizontally disposed with; Casing (13) is arranged on surface one end of base; The stiff end steel bushing is arranged on the surperficial other end of base, and its inside is equipped with the stiff end electrode; Article two, guide rail is set in parallel in the susceptor surface between casing and stiff end steel bushing along the length direction of base; The sliding end steel bushing is fixed on two shoe surface on guide rail, and both sides, top processing via hole runs through two pull bars; The two ends of two pull bars that be arranged in parallel are separately fixed on stiff end steel bushing and casing near on the sidewall inner face of stiff end steel bushing; The sliding end electrode is arranged on the inside of sliding end steel bushing; On stiff end electrode and sliding end electrode, relative side is exposed on the external, for clamping test pieces conduction; Sliding end steel bushing and the contacted surface of sliding end electrode and stiff end steel bushing and the contacted surface spraying one deck of stiff end electrode zirconia ceramics coating; The power sensor stand is arranged on the side of close casing on the sliding end steel bushing, in it, is provided with force cell; One side pressure of leading screw, on force cell, and connects by flat key with power sensor stand hole inwall, and the other end runs through by the bearing be arranged on the casing inner face inside that casing extends to casing; Main shaft runs through on the side that is arranged on casing by the bearing be arranged on casing one side; The conical gear group is comprised of the first conical gear and the second conical gear, wherein the first conical gear is connected with the spindle nose key that is positioned at box house, the second conical gear flat key connection is arranged on the feed screw nut end on the casing inner face by bearings, and is meshed with the first conical gear; Handwheel is arranged on main shaft an end that is positioned at the casing outside.
Described control device comprises main control computer, signal generator, current source, electric shunt, data acquisition unit, shunt voltage collection circuit, electrode voltage Acquisition Circuit, temperature sensor, force cell and strain acquirement device; Wherein: main control computer is the control core of whole test macro, for settling signal control, data acquisition and storage operation; Signal generator is the controllable signal generating means, and its input end is connected with main control computer, and output terminal is connected with current source, produces corresponding signal for the instruction according to main control computer, thereby controls the output current of current source; Current source is controllable current source, be used to test specimen that measuring current is provided, its input end is connected with signal generator, two output terminals respectively with the test specimen machinery loading device on the stiff end electrode with sliding end electrode and electric shunt, be connected, form the test loop of a closure; The electricity shunt is the pure resistive device, for detection of the electric current in test loop; Data acquisition unit is the multi-channel data acquisition circuit, its output terminal is connected with main control computer, input end is connected with shunt voltage collection circuit, electrode voltage Acquisition Circuit, temperature sensor, force cell and strain acquirement device respectively, for the necessary various signals of collecting test; The shunt voltage collection circuit is the voltage signal acquisition circuit, be used to obtaining the voltage at electric shunt two ends; The electrode voltage Acquisition Circuit is the voltage signal acquisition circuit, be used to obtaining the voltage between stiff end electrode and sliding end electrode; Temperature sensor is arranged on the test specimen surface, be used to obtaining the temperature information on test specimen surface; Force cell is the pressure signal sensor, is arranged on the test specimen machinery loading device pressure born be used to obtaining test specimen; The strain acquirement device is comprised of strain testing instrument and foil gauge, and be used to obtaining the strain information of test specimen, wherein foil gauge is arranged on the test specimen surface, and it is connected with the strain testing instrument by private cable.
Carbon fiber enhancement resin base composite material heat provided by the invention-electric injury test macro can carry out quantitative damp and hot damage, electrical injuries and heat, the damage under electric acting in conjunction to the test carbon fiber enhancement resin base composite material, particularly can Accurate Measurement under heat, electric load acting in conjunction the parameters such as carbon fiber enhancement resin base composite material resistance, temperature, strain change, for the inefficacy mechanism of analyzing carbon fiber enhancement resin base composite material under true service condition provides a kind of reliable means.In addition, native system can meet the requirement of sizes test specimen, easy to adjust, and can control and show the contact size, and Accurate Measurement resistance, temperature, strain etc. over time, have good software interface and data management function.
The accompanying drawing explanation
Fig. 1 is that in carbon fiber enhancement resin base composite material heat provided by the invention-electric injury test macro, control device forms block diagram.
Fig. 2 is test specimen machinery loading device structural perspective in carbon fiber enhancement resin base composite material heat provided by the invention-electric injury test macro.
Fig. 3 is test specimen machinery loading device structure vertical view in carbon fiber enhancement resin base composite material heat provided by the invention-electric injury test macro.
Fig. 4 is test specimen machinery loading device structural front view in carbon fiber enhancement resin base composite material heat provided by the invention-electric injury test macro.
Embodiment
Below in conjunction with the drawings and specific embodiments, carbon fiber enhancement resin base composite material heat provided by the invention-electric injury test macro is elaborated.
As shown in Figure 1, carbon fiber enhancement resin base composite material heat provided by the invention-electric injury test macro comprises damp heat box 11, test specimen machinery loading device and control device; Wherein the test specimen machinery loading device is arranged on the inside of damp heat box 11, and two test electrodes are installed on it; Part parts in control device are arranged on the test specimen machinery loading device, be used to current load and the faulted condition parameter gatherer process of controlling the carbon fiber enhancement resin base composite material test specimen.
Described test specimen machinery loading device comprises base 12, casing 13, two guide rails 14, two pull bars 15, stiff end steel bushing 16, stiff end electrode 17, sliding end steel bushing 18, sliding end electrode 19, leading screw 20, power sensor stand 21, conical gear group 22, main shaft 23 and handwheels 24; Wherein base 12 is that rectangle is tabular, is horizontally disposed with; Casing 13 is arranged on surface one end of base 12; Stiff end steel bushing 16 is arranged on the surperficial other end of base 12, and its inside is equipped with stiff end electrode 17; Article two, guide rail 14 is set in parallel in base 12 surfaces between casing 13 and stiff end steel bushing 16 along the length direction of base 12; Sliding end steel bushing 18 is fixed on two shoe surface on guide rail 14, and both sides, top processing via hole runs through two pull bars 15; The two ends of two pull bars 15 that be arranged in parallel are separately fixed on stiff end steel bushing 16 and casing 13 near on the sidewall inner face of stiff end steel bushing 16; Sliding end electrode 19 is arranged on the inside of sliding end steel bushing 18; On stiff end electrode 17 and sliding end electrode 19, relative side is exposed on the external, for clamping test pieces conduction; Sliding end steel bushing 18 and the contacted surface of sliding end electrode 19 and stiff end steel bushing 16 and the contacted surface spraying one deck of stiff end electrode 17 zirconia ceramics coating; Power sensor stand 21 is arranged on the side of close casing 13 on sliding end steel bushing 18, in it, is provided with force cell 9; One side pressure of leading screw 20, on force cell 9, and connects by flat key with power sensor stand 21 hole inwalls, and the other end runs through by the bearing be arranged on casing 13 inner faces the inside that casing 13 extends to casing 13; Main shaft 23 runs through on the side that is arranged on casing 13 by the bearing be arranged on casing 13 1 sides; Conical gear group 22 is comprised of the first conical gear 25 and the second conical gear 26, wherein the first conical gear 25 is connected with the main shaft 23 end keys that are positioned at casing 13 inside, the second conical gear 26 flat keys connections are arranged on feed screw nut 26 ends on casing 13 inner faces by bearings, and are meshed with the first conical gear 25; Handwheel 24 is arranged on main shaft 23 end that is positioned at casing 13 outsides.
Described control device comprises main control computer 1, signal generator 2, current source 3, electric shunt 4, data acquisition unit 5, shunt voltage collection circuit 6, electrode voltage Acquisition Circuit 7, temperature sensor 8, force cell 9 and strain acquirement device 10; Wherein: main control computer 1 is the control core of whole test macro, for settling signal control, data acquisition and storage operation; Signal generator 2 is the controllable signal generating means, and its input end is connected with main control computer 1, and output terminal is connected with current source 3, produces corresponding signal for the instruction according to main control computer 1, thereby controls the output current of current source 3; Current source 3 is controllable current source, be used to test specimen that measuring current is provided, its input end is connected with signal generator 2, two output terminals respectively with the test specimen machinery loading device on stiff end electrode 17 with sliding end electrode 19 and electric shunt 4, be connected, form the test loop of a closure; Electricity shunt 4 is the pure resistive device, for detection of the electric current in test loop; Data acquisition unit 5 is the multi-channel data acquisition circuit, its output terminal is connected with main control computer 1, input end is connected with shunt voltage collection circuit 6, electrode voltage Acquisition Circuit 7, temperature sensor 8, force cell 9 and strain acquirement device 10 respectively, for the necessary various signals of collecting test; Shunt voltage collection circuit 6 is the voltage signal acquisition circuit, be used to obtaining the voltage at electric shunt 4 two ends; Electrode voltage Acquisition Circuit 7 is the voltage signal acquisition circuit, be used to obtaining the voltage between stiff end electrode 17 and sliding end electrode 19; Temperature sensor 8 is arranged on the test specimen surface, be used to obtaining the temperature information on test specimen surface; Force cell 9 is the pressure signal sensor, is arranged on the test specimen machinery loading device pressure born be used to obtaining test specimen; Strain acquirement device 10 is comprised of strain testing instrument and foil gauge, and be used to obtaining the strain information of test specimen, wherein foil gauge is arranged on the test specimen surface, and it is connected with the strain testing instrument by private cable.
Now carbon fiber enhancement resin base composite material heat provided by the invention-electric injury test macro course of work is described: at first by operating personnel, rotate handwheel 24 so that sliding end electrode 19 is adjusted to a certain position, then will pack between stiff end electrode 17 and sliding end electrode 19 as the surface treated carbon fiber enhancement resin base composite material plate of test specimen; Open main control computer 1 and enter the software control interface, rotate handwheel 24 and apply certain contact to test specimen, limit is rotated handwheel 24 limits and is observed the force value shown in softwares, fixing handwheel 24 during wish loads until reach pressure.
After test specimen is fixing, on the test specimen surface, arrange temperature sensor 8, can adopt the temperature sensor of the contacts such as thermistor, common thermocouple, also can adopt contactless Infrared Thermocouple etc. as temperature sensor, the sensor fixed support can be arranged on stiff end steel bushing 16 and a certain position above sliding end steel bushing 18.Foil gauge is attached to the test specimen surface, and dynamic strain indicator should carry out automatic clear and input foil gauge sensitivity coefficient when using for the first time.
The test specimen machinery loading device that installs test specimen and sensor is put into to damp heat box 11, and the temperature and humidity when test is set on main control computer 1, keep time enough to make the test specimen humiture reach setting value.Then by software, measuring current is set, turn-on current source 3, click the software start button and test.Arrive the time after-current loading of setting and automatically stop, test findings is preserved automatically.
Turn off the power supply of current source 3 and damp heat box 11, after test specimen is cooling, take out test specimen, carry out failure analysis and Mechanics Performance Testing.
This test macro can be made as current load zero and only carry out damp and hot damage test, or does not use 11 of damp heat boxes to carry out the electrical injuries test.
Claims (1)
1. carbon fiber enhancement resin base composite material heat-electric injury test macro, it is characterized in that: described test macro comprises damp heat box (11), test specimen machinery loading device and control device; Wherein the test specimen machinery loading device is arranged on the inside of damp heat box (11), and two test electrodes are installed on it; Part parts in control device are arranged on the test specimen machinery loading device, be used to current load and the faulted condition parameter gatherer process of controlling the carbon fiber enhancement resin base composite material test specimen; Described test specimen machinery loading device comprises base (12), casing (13), two guide rails (14), two pull bars (15), stiff end steel bushing (16), stiff end electrode (17), sliding end steel bushing (18), sliding end electrode (19), leading screw (20), power sensor stand (21), conical gear group (22), main shaft (23) and handwheel (24); Wherein base (12) is that rectangle is tabular, is horizontally disposed with; Casing (13) is arranged on surface one end of base (12); Stiff end steel bushing (16) is arranged on the surperficial other end of base (12), and its inside is equipped with stiff end electrode (17); Article two, guide rail (14) is set in parallel in along the length direction of base (12) base (12) surface be positioned between casing (13) and stiff end steel bushing (16); Sliding end steel bushing (18) is fixed on two shoe surface on guide rail (14), and both sides, top processing via hole runs through two pull bars (15); The two ends of two pull bars (15) that be arranged in parallel are separately fixed at stiff end steel bushing (16) and casing (13) is upper near on the sidewall inner face of stiff end steel bushing (16); Sliding end electrode (19) is arranged on the inside of sliding end steel bushing (18); Stiff end electrode (17) is exposed on the external with the upper relative side of sliding end electrode (19), for clamping test pieces conduction; Sliding end steel bushing (18) and the contacted surface of sliding end electrode (19) and stiff end steel bushing (16) and the contacted surface spraying one deck of stiff end electrode (17) zirconia ceramics coating; Power sensor stand (21) is arranged on the upper side near casing (13) of sliding end steel bushing (18), in it, is provided with force cell (9); One side pressure of leading screw (20) is on force cell (9), and connect by flat key with power sensor stand (21) hole inwall, the other end runs through by the bearing be arranged on casing (13) inner face the inside that casing (13) extends to casing (13); Main shaft (23) runs through on the side that is arranged on casing (13) by the bearing be arranged on casing (13) one sides; Conical gear group (22) is comprised of the first conical gear (25) and the second conical gear (26), wherein the first conical gear (25) main shaft (23) end key inner with being positioned at casing (13) is connected, the connection of the second conical gear (26) flat key is arranged on feed screw nut (26) end on casing (13) inner face by bearings, and is meshed with the first conical gear (25); Handwheel (24) is arranged on main shaft (23) and is positioned at the outside end of casing (13); Described control device comprises main control computer (1), signal generator (2), current source (3), electric shunt (4), data acquisition unit (5), shunt voltage collection circuit (6), electrode voltage Acquisition Circuit (7), temperature sensor (8), force cell (9) and strain acquirement device (10); Wherein: main control computer (1) is the control core of whole test macro, for settling signal control, data acquisition and storage operation; Signal generator (2) is the controllable signal generating means, its input end is connected with main control computer (1), output terminal is connected with current source (3), produces corresponding signal for the instruction according to main control computer (1), thereby controls the output current of current source (3); Current source (3) is controllable current source, be used to test specimen that measuring current is provided, its input end is connected with signal generator (2), two output terminals respectively with the test specimen machinery loading device on stiff end electrode (17) with sliding end electrode (19) and electric shunt (4), be connected, form the test loop of a closure; Electricity shunt (4) is the pure resistive device, for detection of the electric current in test loop; Data acquisition unit (5) is the multi-channel data acquisition circuit, its output terminal is connected with main control computer (1), input end is connected with shunt voltage collection circuit (6), electrode voltage Acquisition Circuit (7), temperature sensor (8), force cell (9) and strain acquirement device (10) respectively, for the necessary various signals of collecting test; Shunt voltage collection circuit (6) is the voltage signal acquisition circuit, be used to obtaining the voltage at electric shunt (4) two ends; Electrode voltage Acquisition Circuit (7) is the voltage signal acquisition circuit, be used to obtaining the voltage between stiff end electrode (17) and sliding end electrode (19); Temperature sensor (8) is arranged on the test specimen surface, be used to obtaining the temperature information on test specimen surface; Force cell (9) is the pressure signal sensor, is arranged on the test specimen machinery loading device pressure born be used to obtaining test specimen; Strain acquirement device (10) is comprised of strain testing instrument and foil gauge, and be used to obtaining the strain information of test specimen, wherein foil gauge is arranged on the test specimen surface, and it is connected with strain detector by private cable.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100453426A CN102590260B (en) | 2012-02-27 | 2012-02-27 | Heat-electric injury testing system of carbon fiber reinforced resin matrix composite material |
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| CN2012100453426A CN102590260B (en) | 2012-02-27 | 2012-02-27 | Heat-electric injury testing system of carbon fiber reinforced resin matrix composite material |
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| CN102590260A CN102590260A (en) | 2012-07-18 |
| CN102590260B true CN102590260B (en) | 2013-11-27 |
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| CN104483341A (en) * | 2014-12-12 | 2015-04-01 | 广西科技大学 | Test method of temperature sensing performance of intelligent carbon fiber plate |
| CN106092903B (en) * | 2016-07-21 | 2021-11-05 | 国网河南省电力公司周口供电公司 | Carbon fiber composite core wire inspection device and using method thereof |
| CN107655928A (en) * | 2017-10-30 | 2018-02-02 | 佛山科学技术学院 | A kind of big temperature difference environment thermoelectricity capability test device |
| CN117309668A (en) * | 2023-09-21 | 2023-12-29 | 东南大学 | Portable automatic detection equipment and detection method for steel wire corrosion |
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| CN101551350B (en) * | 2009-05-18 | 2012-07-11 | 南昌航空大学 | Method of establishing damnification self-diagnosis system for carbon fiber enhancement resin base composite material |
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