CN109738489A - Multiple continuous thunder and lightning flow component acts on lower carbon fibre composite damage measurement method - Google Patents
Multiple continuous thunder and lightning flow component acts on lower carbon fibre composite damage measurement method Download PDFInfo
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- 239000002131 composite material Substances 0.000 title claims abstract description 86
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 84
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 81
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- 238000013213 extrapolation Methods 0.000 claims abstract description 4
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 26
- 239000004917 carbon fiber Substances 0.000 claims description 26
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 26
- 238000012360 testing method Methods 0.000 claims description 20
- 239000003990 capacitor Substances 0.000 claims description 17
- 238000005070 sampling Methods 0.000 claims description 14
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- 239000007924 injection Substances 0.000 claims description 3
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- 230000005619 thermoelectricity Effects 0.000 claims description 2
- 239000000523 sample Substances 0.000 abstract description 16
- 238000011160 research Methods 0.000 abstract description 6
- 239000004918 carbon fiber reinforced polymer Substances 0.000 description 13
- 229910052739 hydrogen Inorganic materials 0.000 description 7
- 208000025274 Lightning injury Diseases 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
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- 230000003068 static effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
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- G01N27/20—Investigating the presence of flaws
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/28—Provision in measuring instruments for reference values, e.g. standard voltage, standard waveform
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
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Abstract
The present invention discloses a kind of multiple lower carbon fibre composite damage measurement method of continuous thunder and lightning flow component effect, the motional impedance curve of lower carbon fibre composite is acted on using each thunder and lightning flow component in the multiple continuous uninterrupted timing obtained under the effect of non-demolition lightning current, anisotropic conductivity of the carbon fibre composite in the case where providing each lightning current component parameters under the conditions of the thunder and lightning damage simulation that extrapolation is pre-designed, primary condition as material electric conductivity in carbon fibre composite coupled thermomechanics model, the true lightning effects of more preferable simulation carbon fibre composite, more precisely obtain the lightning damage of carbon fibre composite, including the correlativity between thunder and lightning damaged area and lesion depths and lightning current component parameters, probe into carbon fibre composite and thunder and lightning micromechanism of damage, for carbon fibre composite formula, technique Research and its performance boost and engineer application based theoretical.
Description
Technical field
The invention belongs to the emulated computation methods of carbon fibre composite thunder and lightning damage, are related to a kind of multiple continuous thunder and lightning stream
Component acts on lower carbon fibre composite damage measurement method.
Background technique
Carbon fibre composite had not only had the characteristics such as low-density, high intensity, high-modulus, high temperature resistant, resistant to chemical etching, but also tool
There is the soft machinability of textile fabric, is widely used in the every field such as aerospace, military affairs and civilian industry.With aircraft
The improvement of design and the progress of carbon fibre composite technology, high purity carbon fiberreinforced polymer composites CFRP (Carbon
Fiber Reinforced Polymers) dosage on Large Civil Aircraft, military aircraft, unmanned plane and stealth aircraft is not
It is disconnected to increase, from the dosage of CFRP on nineteen sixty McDonnell-Douglas Corporation DC-9 type less than 1%, to 2011 year end Boeing B787 main wing,
Empennage, body, floor isostructural 50% are CFRP materials, and ratio shared by CFRP material reaches on Air Passenger A350XWA
53%.
Compare aluminium, steel and the titanium alloy material that tradition uses in aircraft, and the electrical conduction performance of CFRP is poor.In general,
The resistivity of CFRP layer plywood warp direction is 10-5Ω m magnitude, the resistivity in transverse plane direction are 10-1Ω m magnitude,
Depth/thickness direction resistivity is bigger.This allows for CFRP layer plywood has in lightning stroke without image of Buddha metal material like that
The energy of the ability for having the short time that the charge of accumulation is made to shift or spread rapidly, the accumulation of this part is made in the form of Joule heat
CFRP temperature sharply increases, and seriously damages so as to cause the fibrous fracture of CFRP, resin pyrolysis, Depth Stratification etc..
European Union and American army mark define the direct test requirements document of aircraft thunder and lightning and thunder and lightning flow component, wherein thunder and lightning component packet
It includes component A (Fields of Lightning Return Stroke component for the first time) or Ah (the transition component of Fields of Lightning Return Stroke for the first time), B (intermediate current component), C/C* (is held
Continuous current component) and D (subsequent counterattack component) current wave, wherein lightning current component A, Ah and D wave are that peak value is high (respectively
200kA, 150kA, 100kA), the fast thunder and lightning flow component of climbing speed；When thunder and lightning flow component B can be average current 2kA, rise
Between the short, duration be several milliseconds of double exponential waves, be also possible to the more slow square wave current of rising；Thunder and lightning flow component C
For the rise time is slow, several hundred milliseconds of current wave of duration.And it is directed to different thunder and lightning subregions, aerospace vehicle difference is attached
Area's thunder and lightning direct effect test mould group it is as shown in table 1.
Table 1: the test of aerospace vehicle difference attachment region thunder and lightning direct effect
| Lightning current subregion | Lightning current waveform |
| The area 1A | A, B, C*, H |
| The area 1B | A, B, C, D, H |
| The area 1C | Ah, B, C*, D, H |
| The area 2A | D, B, C*, H |
| The area 2B | D, B, C, H |
| 3rd area (attachment) | A/5, B, C* |
| 3rd area (conduction) | A, B, C, D, H |
In table 1, there are four thunder and lightning flow component in the multiple continuous uninterrupted thunder and lightning direct effect test of thunder and lightning 1A subregion, the
One thunder and lightning flow component is A, and second component is B, and third component is C*, and the 4th thunder and lightning flow component is H.Other mode examinations
The timely sequence of thunder and lightning flow component tested is similar.
Since CFRP comes out, in terms of research hotspot is just concentrated on the research of its mechanical property by many scholars, obtain
Relationship schedule between the tensile strength of mechanical shock parameter and CFRP, incompressible intensity and damage field and lesion depths.
Presently, the research about the damage of carbon fibre composite thunder and lightning obtains more and more extensive concern, and many researchers exist
In the case that laboratory facilities lack, the heat of lower carbon fibre composite thunder and lightning damage is acted on by establishing single lightning current A component
It is electrically coupled model, the influence rule of carbon fibre composite thunder and lightning damaged area, lesion depths are tentatively obtained by simulation calculation
Rule.But this simulation model is usually established with the critical value of temperature or impedance with the rule that pyrolysis degree changes, and heat
The primary condition for being electrically coupled model is the conductivity of carbon fibre composite in the case of static (direct current) low current, is ignored completely
Lightning current acts on the significant difference and carbon fiber composite of lower carbon fibre composite conductivity and static direct current low current
Expect the nonlinear characteristic under lightning current effect.Meanwhile also not accounting for the multiple continuous uninterrupted timing of practical lightning stroke process
Thunder and lightning flow component, so that there are larger differences for the thunder and lightning damage under the result of simulation calculation and practical lightning stroke.Patent of invention ZL
2015104538855 disclose " impedance operator measurement method and measurement under carbon fibre composite non-destructive lightning current acts on
The result of study of device ", pertinent literature also indicates that: carbon fibre composite is acted on due to its structure, operational characteristic in lightning current
Apparent nonlinear characteristic is presented in its lower conductivity.
Summary of the invention
The purpose of the present invention is to provide a kind of multiple continuous thunder and lightning flow component to act on lower carbon fibre composite damage meter
Calculation method accurately obtains lightning damage of the carbon fibre composite under multiple continuous uninterrupted timing thunder and lightning flow component effect
With the relationship between lightning current component parameters, theoretical foundation is provided for carbon fibre composite formula, the research of technique and application.
The present invention uses following scheme to achieve the above object:
Multiple continuous thunder and lightning flow component acts on lower carbon fibre composite damage measurement method, includes the following steps:
(1), each thunder and lightning flow component test platform of multiple continuous uninterrupted lightning effects test is established, test obtains carbon
Quasi dynamic VA characteristic curve of the fibrous composite under the effect of each thunder and lightning flow component；
(2), to obtained carbon fibre composite non-demolition each thunder and lightning flow component effect under VA characteristic curve into
Row numerical fitting obtains the mathematic(al) representation between carbon fibre composite impedance or conductivity and waveform parameter；
(3), according to the carbon fibre composite thunder and lightning damage simulation condition being pre-designed, by the electricity of carbon fibre composite
Conductance is extrapolated according to the mathematic(al) representation that above-mentioned steps (3) obtain, and calculates carbon fibre composite in regulation thunder and lightning stream peak
Each multiple continuous uninterrupted timing lightning current A component, Ah component, B component, C component, C* component, D component, the H component of value are made
The extrapolation range of lightning current peak value is several hundred A to 200kA, as multiple continuous thunder and lightning stream by the anisotropic conductivity under
Act on the primary condition of material electric conductivity in lower carbon fibre composite coupled thermomechanics model；
(4), the proposed ply angles for imitating genuine carbon fibre composite laminate, density, specific heat, the heat of material are set
Conductance and mechanical strength parameter；
(5), the simulation model boundary condition that setting carbon fibre composite thunder and lightning damages, including environment temperature, stagnation temperature
It spends, the heat transfer and radiation coefficient of carbon fibre composite and ambient enviroment in mechanism of being struck by lightning；
(6), the simulation calculation grid for dividing carbon fibre composite coupled thermomechanics model, set injection it is multiple it is continuous not
It is interrupted timing lightning current component parameters, thermoelectricity present in simulation calculation thunder and lightning flow component and carbon fibre composite mechanism
Effect；
(7), after the temperature of carbon fibre composite is increased to critical value, carbon fibre composite internal resin occurs
Pyrolysis, with the increase of materials pyrolysis degree, conductive characteristic, thermal conduction characteristic and the mechanical performance of carbon fibre composite can occur
Great variety, conductive characteristic are changed into good conductor by original insulation or high-impedance state；
(8), the carbon fibre composite obtained according to simulation calculation is under multiple continuous uninterrupted thunder and lightning flow component effect
Temperature and pyrolysis degree distribution, its thunder and lightning damaged area and lesion depths are analyzed.
Further, thunder and lightning flow component test platform includes that circuit occurs for thunder and lightning flow component, and it is high that circuit occurs for thunder and lightning flow component
Pressure side and tested carbon fiber sample upper surface are electrically connected, and circuit low-pressure end and tested carbon fiber sample occur for thunder and lightning flow component
Lower surface is electrically connected and is grounded；
It further include obtaining the pulse voltage sampling unit of tested carbon fiber sample upper surface voltage and obtaining to be tested carbon fiber
The lightning current sampling unit of sample following table surface current, pulse voltage sampling unit and lightning current sampling unit and computer measurement and control point
Unit is analysed to be connected.
Further, circuit occurs for the thunder and lightning flow component by rlc circuit, CROWBA circuit or L-C multichain network loop structure
At.
Further, thunder and lightning flow component test platform includes controllable DC charging power supply and is connected in parallel on controllable DC charging power supply
On storage capacitor unit, the high-voltage end that controllable DC charging power supply is connected with storage capacitor unit be sequentially connected in series discharge switch,
Waveform adjusts resistance and waveform adjusts inductance, and waveform adjusts inductance and tested carbon fiber sample upper surface is electrically connected, energy storage electricity
The lower surface for holding unit low-pressure end and tested carbon fiber sample is electrically connected and is grounded, by controlling storage capacitor unit, waveform
Adjust the gain of parameter thunder and lightning flow component of resistance and waveform adjustment inductance.
Further, thunder and lightning flow component test platform current peak range is several A to tens A or thousands of A.
Multiple continuous thunder and lightning flow component of the invention acts on lower carbon fibre composite damage measurement method, joined carbon fiber
The boundary condition of composite material motional impedance is tieed up, that is, utilizes the multiple continuous uninterrupted timing obtained under the effect of non-demolition lightning current
In each thunder and lightning flow component (A, B, C, D, H component) act on the motional impedance curve of lower carbon fibre composite, extrapolation obtains pre-
Anisotropic electric of the carbon fibre composite in the case where providing each lightning current component parameters under the conditions of the thunder and lightning damage simulation first designed
Conductance, as the primary condition of material electric conductivity in carbon fibre composite coupled thermomechanics model, more preferable simulation carbon fiber is multiple
The true lightning effects of condensation material more precisely obtain the lightning damage of carbon fibre composite, including thunder and lightning damaged area
Correlativity between lesion depths and lightning current component parameters, probe into carbon fibre composite and thunder and lightning micromechanism of damage,
For carbon fibre composite formula, the research of technique and its performance boost and engineer application based theoretical.
Detailed description of the invention
Fig. 1 is thunder and lightning flow component test platform functional block diagram of the present invention；
Fig. 2 is rlc circuit schematic diagram；
Fig. 3 is CROWBAR circuit diagram；
Fig. 4 is L-C multichain network loop member schematic diagram；
Fig. 5 is the test flow chart that thunder and lightning flow component acts on lower carbon fibre composite dynamic electric conductance；
Fig. 6 is the emulation meter that multiple continuous uninterrupted timing thunder and lightning flow component acts on lower carbon fibre composite thunder and lightning damage
Calculate flow chart.
Specific embodiment
Present invention is further described in detail in the following with reference to the drawings and specific embodiments, but not as to limit of the invention
It is fixed.
Referring to Fig. 1, invention thunder and lightning flow component test platform of the invention includes controllable DC charging power supply 1, storage capacitor
Unit 2, discharge switch 3, waveform adjustment resistance 4, waveform adjust inductance 5, be tested carbon fiber sample 6, lightning current sampling unit 7,
Pulse voltage sampling unit 8 and computer measurement and control analytical unit 9.
Storage capacitor unit 2 is connected in parallel on controllable DC charging power supply 1, controllable DC charging power supply 1 and storage capacitor list
The high-voltage end of 2 connection of member is sequentially connected in series discharge switch 3, waveform adjustment resistance 4 and waveform adjustment inductance 5, controllable DC charging electricity
Source 1, storage capacitor unit 2, discharge switch 3, waveform adjustment resistance 4 and waveform adjustment inductance 5 constitute thunder and lightning flow component and electricity occur
Road, circuit high-voltage end occurs for thunder and lightning flow component and tested 6 upper surface of carbon fiber sample is electrically connected, and circuit occurs for thunder and lightning flow component
The lower surface of low-pressure end and tested carbon fiber sample 6 is electrically connected and is grounded, and is adjusted by control storage capacitor unit 2, waveform
The parameter of resistance 4 and waveform adjustment inductance 5, can obtain lightning current A, Ah, D and H component.
It further include obtaining the pulse voltage sampling unit 8 of tested 6 upper surface voltage of carbon fiber sample and obtaining to be tested carbon fiber
Tie up the lightning current sampling unit 7 of 6 following table surface current of sample, pulse voltage sampling unit 8 and lightning current sampling unit 7 and computer
Observing and controlling analytical unit 9 is connected.
Below by taking lightning current A component as an example, to illustrate the method for adjustment of loop parameter, other thunder and lightning flow component circuits can be with
The selection of loop parameter is carried out referring to this process.
Lightning current A component meets following formula are as follows:
I (t)=I0(e-αt-e-βt), in which: α=11354s-1,=647265s-1
Thus the rise time T of lightning current A component is calculated1With half time to peak T2It is respectively as follows:
T1=3.56 μ s T2=69 μ s
Referring to fig. 2,3, lightning current A component can be produced using rlc circuit shown in Fig. 2 or CROWBAR circuit shown in Fig. 3
It is raw.
If rlc circuit shown in Fig. 2 is selected to generate lightning current A component waveform, loop parameter selection is according to following step
It is rapid:
According to following formula (1):
In formula (1), C is storage capacitor unit 2, and L is that waveform adjusts resistance 4, and R is that waveform adjusts inductance 5；U0For energy storage
The charging voltage at capacitor both ends, T1For the wave front time of thunder and lightning flow component, imThe peak value of electric current is exported for circuit, ξ is Fig. 2 circuit
Damped coefficient；T1 *For the normalization coefficient of wave front time, im *For normalized peak factor.
Contain 4 unknown numbers in 3 equations described in formula (1), therefore, equation (1) has infinite multiple groups solution.It is assumed that storage
It, can be according to 1 selection parameter of table under conditions of energy capacitance:
Table 1: the selection of lightning current A component loop parameter
| Serial number | Capacitor C | Resistance R | Inductance L |
| 1 | 100 | 0.9 | 1.4 |
| 2 | 50 | 1.8 | 2.8 |
| 3 | 25 | 3.6 | 4.2 |
| …… | …… | …… | …… |
In Fig. 2, controllable DC charging power supply 1 is by pressure regulator Tr, transformer Tt, rectifier diode D, charging resistor R1Group
At；Switch S and resistance R2Form storage capacitor safety relief circuit.
Lightning current A component of the invention can also be generated with circuit shown in Fig. 3.Thunder and lightning flow component generating loop in Fig. 3
In, it include storage capacitor 21, main discharge switch 31, CROWBAR switch 32, waveform formation inductance 51.
Referring to fig. 4, L-C multichain network loop can produce lightning current B or C component waveform, in order to ensure square wave current is held
The stability of peak point current in the continuous time, it be exactly LC chain number is 12 that the chain number in general L-C multichain square wave circuit, which should be greater than 8, Fig. 4,
Square wave lightning current generating loop.
Referring to Fig. 5, test platform is established according to 1 parameter of table and Fig. 1 circuit, tested carbon fiber sample 6 is serially connected in Fig. 1 and is returned
The high-voltage end of Lu Zhong, the upper surface and lightning current generating loop that are tested carbon fiber sample 6 are electrically connected, and are tested carbon fiber sample 6
Lower surface and lightning current generating loop low-pressure end be electrically connected.According to the measurement side of patent of invention ZL 2015104538855
Method obtains the Quasi dynamic VA characteristic curve under the effect of carbon fibre composite lightning current.To obtained carbon fibre composite
VA characteristic curve under non-demolition lightning stroke effect carries out numerical fitting, obtains lightning current A, Ah, D, H component and acts on lower carbon fiber
Mathematic(al) representation between composite material impedance or conductivity and waveform parameter.
Similarly, also available lightning current B, C component acts on lower carbon fibre composite impedance or conductivity and waveform
Mathematic(al) representation between parameter.
Referring to Fig. 6, the emulated computation method of carbon fibre composite thunder and lightning damage of the invention is as follows:
1) it, according to the multiple continuous uninterrupted timing thunder and lightning damage simulation condition of the carbon fibre composite being pre-designed, imitates
True calculating carbon fibre composite (includes thunder in the multiple continuous uninterrupted timing thunder and lightning flow component of regulation parameter (current peak)
Electric current A or Ah, B, C or C*, D, H component) the lower anisotropic conductivity of effect, as the molding of carbon fibre composite thermocouple
The primary condition of material electric conductivity in type.
2), the ply angles of carbon fibre composite laminate, density, specific heat, the heat of material are set according to the actual situation
The parameters such as conductance and mechanical strength；
3), the simulation model boundary condition that setting carbon fibre composite thunder and lightning damages, including environment temperature, lightning stroke effect
The heat transfer and radiation coefficient etc. of carbon fibre composite and ambient enviroment in the process.
4) the simulation calculation grid for, dividing carbon fibre composite coupled thermomechanics model, set injection it is multiple it is continuous not
It is interrupted the parameter of thunder and lightning flow component, each lightning current component parameters and carbon fiber of the multiple continuous uninterrupted timing of simulation calculation are multiple
Pyroelectric effect present in condensation material mechanism.
5), after the temperature of carbon fibre composite is increased to critical value, carbon fibre composite internal resin occurs
Pyrolysis.With the increase of materials pyrolysis degree, conductive characteristic, thermal conduction characteristic and the mechanical performance of carbon fibre composite can occur
Great variety, conductive characteristic are changed into good conductor by original insulation or high-impedance state.
6), the carbon fibre composite obtained according to simulation calculation is in multiple continuous uninterrupted timing thunder and lightning flow component effect
Under temperature and pyrolysis degree distribution, its thunder and lightning damaged area and lesion depths are analyzed and are assessed.
Finally it should be noted that: the above examples are only used to illustrate the technical scheme of the present invention rather than its limitations, to the greatest extent
Pipe is described the invention in detail referring to above-described embodiment, it should be understood by those ordinary skilled in the art that: still may be used
With modifications or equivalent substitutions are made to specific embodiments of the invention, and repaired without departing from any of spirit and scope of the invention
Change or equivalent replacement, should all cover in present claims range.
Claims (5)
1. multiple continuous thunder and lightning flow component acts on lower carbon fibre composite damage measurement method, it is characterised in that including walking as follows
It is rapid:
(1), each thunder and lightning flow component test platform of multiple continuous uninterrupted lightning effects test is established, test obtains carbon fiber
Quasi dynamic VA characteristic curve of the composite material under the effect of each thunder and lightning flow component；
(2), the VA characteristic curve under the effect of obtained carbon fibre composite non-demolition each thunder and lightning flow component is counted
Value fitting, obtains the mathematic(al) representation between carbon fibre composite impedance or conductivity and waveform parameter；
(3), according to the carbon fibre composite thunder and lightning damage simulation condition being pre-designed, by the conductivity of carbon fibre composite
It extrapolates according to the mathematic(al) representation that above-mentioned steps (3) obtain, calculates carbon fibre composite in regulation lightning current peak value
Under each multiple continuous uninterrupted timing lightning current A component, Ah component, B component, C component, C* component, D component, the effect of H component
Anisotropic conductivity, by the extrapolation range of lightning current peak value be several hundred A to 200kA, as multiple continuous thunder and lightning stream act on
The primary condition of material electric conductivity in lower carbon fibre composite coupled thermomechanics model；
(4), the proposed ply angles for imitating genuine carbon fibre composite laminate, density, specific heat, the thermal conductivity of material are set
And mechanical strength parameter；
(5), the simulation model boundary condition that setting carbon fibre composite thunder and lightning damages, including environment temperature, critical-temperature, thunder
Hit the heat transfer and radiation coefficient of carbon fibre composite and ambient enviroment in mechanism；
(6), the simulation calculation grid for dividing carbon fibre composite coupled thermomechanics model sets the multiple continuous uninterrupted of injection
Thermoelectricity present in timing lightning current component parameters, simulation calculation thunder and lightning flow component and carbon fibre composite mechanism is imitated
It answers；
(7), after the temperature of carbon fibre composite is increased to critical value, there is heat in carbon fibre composite internal resin
Solution, with the increase of materials pyrolysis degree, conductive characteristic, thermal conduction characteristic and the mechanical performance of carbon fibre composite can occur huge
Big variation, conductive characteristic are changed into good conductor by original insulation or high-impedance state；
(8), temperature of the carbon fibre composite obtained according to simulation calculation under multiple continuous uninterrupted thunder and lightning flow component effect
Degree and the distribution of pyrolysis degree, analyze its thunder and lightning damaged area and lesion depths.
2. according to the method described in claim 1, it is characterized by: thunder and lightning flow component test platform includes that thunder and lightning flow component occurs
Circuit, circuit high-voltage end occurs for thunder and lightning flow component and tested carbon fiber sample (6) upper surface is electrically connected, and thunder and lightning flow component occurs
The lower surface of circuit low-pressure end and tested carbon fiber sample (6) is electrically connected and is grounded；
It further include obtaining the pulse voltage sampling unit (8) of tested carbon fiber sample (6) upper surface voltage and obtaining to be tested carbon fiber
Tie up the lightning current sampling unit (7) of sample (6) following table surface current, pulse voltage sampling unit (8) and lightning current sampling unit (7)
It is connected with computer measurement and control analytical unit (9).
3. according to the method described in claim 2, it is characterized by: the thunder and lightning flow component occur circuit by rlc circuit,
CROWBA circuit or L-C multichain network loop are constituted.
4. according to the method described in claim 3, it is characterized by: thunder and lightning flow component test platform includes controllable DC charging electricity
Source (1) and the storage capacitor unit (2) being connected in parallel on controllable DC charging power supply (1), controllable DC charging power supply (1) and energy storage
The high-voltage end of capacitor cell (2) connection is sequentially connected in series discharge switch (3), waveform adjustment resistance (4) and waveform adjustment inductance (5),
Waveform adjusts inductance (5) and tested carbon fiber sample (6) upper surface and is electrically connected, storage capacitor unit (2) low-pressure end and tested
The lower surface of carbon fiber sample (6) is electrically connected and is grounded, by control storage capacitor unit (2), waveform adjustment resistance (4) and
Waveform adjusts the gain of parameter thunder and lightning flow component of inductance (5).
5. method according to claim 1-4, it is characterised in that: thunder and lightning flow component test platform current peak model
It encloses for several A to tens A or thousands of A.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811489506.8A CN109738489B (en) | 2018-12-06 | 2018-12-06 | Method for calculating damage of carbon fiber composite material under action of multiple continuous lightning current components |
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| CN110887876A (en) * | 2019-11-15 | 2020-03-17 | 上海交通大学 | Method for detecting lightning damage of carbon fiber composite laminated plate |
| WO2020114079A1 (en) * | 2018-12-06 | 2020-06-11 | 西安交通大学 | Method for calculating damage of carbon fiber composite material under action of single fast-rising lightning current component |
| WO2020114082A1 (en) * | 2018-12-06 | 2020-06-11 | 西安交通大学 | Carbon fiber composite damage calculating method under action of multiple continuous lightning current components |
| CN111400910A (en) * | 2020-03-16 | 2020-07-10 | 西安交通大学 | Lightning current shunt characteristic calculation method of four-corner tower communication base station system |
| CN111579870A (en) * | 2020-04-23 | 2020-08-25 | 南京邮电大学 | Structural member damage monitoring and accumulation degree diagnosis method |
| CN111651952A (en) * | 2020-03-16 | 2020-09-11 | 西安交通大学 | Calculation method for lightning current characteristics of pole-holding communication system |
| CN112287572A (en) * | 2019-07-09 | 2021-01-29 | 中国航发商用航空发动机有限责任公司 | Complex system and method and device for optimizing and verifying lightning stroke direct effect protection of complex system |
| US20210215629A1 (en) * | 2018-12-06 | 2021-07-15 | X1' An Jiaotong University | Lightning damage assessment method for carbon fiber reinforced polymer material considering non-linear impedance characteristic |
| CN117290908A (en) * | 2023-11-27 | 2023-12-26 | 西安爱邦电磁技术有限责任公司 | Electric heating simulation method for continuous combined component of lightning current |
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| CN115219792B (en) * | 2022-07-29 | 2024-06-11 | 北京宇航系统工程研究所 | Nonlinear conductivity measurement device and method for carbon fiber composite material |
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| CN112287572B (en) * | 2019-07-09 | 2023-10-31 | 中国航发商用航空发动机有限责任公司 | Complex system and lightning stroke direct effect protection optimization and verification method and device thereof |
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| CN110887876A (en) * | 2019-11-15 | 2020-03-17 | 上海交通大学 | Method for detecting lightning damage of carbon fiber composite laminated plate |
| CN111400910A (en) * | 2020-03-16 | 2020-07-10 | 西安交通大学 | Lightning current shunt characteristic calculation method of four-corner tower communication base station system |
| CN111400910B (en) * | 2020-03-16 | 2022-06-07 | 西安交通大学 | Lightning current shunt characteristic calculation method of four-corner tower communication base station system |
| CN111651952B (en) * | 2020-03-16 | 2022-12-13 | 西安交通大学 | Calculation method for lightning current characteristics of pole-holding communication system |
| CN111651952A (en) * | 2020-03-16 | 2020-09-11 | 西安交通大学 | Calculation method for lightning current characteristics of pole-holding communication system |
| CN111579870B (en) * | 2020-04-23 | 2022-07-26 | 南京邮电大学 | Structural member damage monitoring and accumulation degree diagnosis method |
| CN111579870A (en) * | 2020-04-23 | 2020-08-25 | 南京邮电大学 | Structural member damage monitoring and accumulation degree diagnosis method |
| CN117290908A (en) * | 2023-11-27 | 2023-12-26 | 西安爱邦电磁技术有限责任公司 | Electric heating simulation method for continuous combined component of lightning current |
| CN117290908B (en) * | 2023-11-27 | 2024-03-26 | 西安爱邦电磁技术有限责任公司 | Electric heating simulation method for continuous combined component of lightning current |
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| WO2020114082A1 (en) | 2020-06-11 |
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