CN113029825A - Dynamic impact experiment system and method based on high-frequency induction preheating - Google Patents
Dynamic impact experiment system and method based on high-frequency induction preheating Download PDFInfo
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Abstract
The invention discloses a dynamic impact experiment system based on high-frequency induction preheating, which comprises a target frame, wherein a sample frame is connected onto the target frame, a magnetic induction coil is arranged around the sample frame and is connected with a high-frequency heating system and a water cooling system, and a sample temperature measuring system and a sample speed measuring system are arranged on the outer side of the sample frame at intervals. Meanwhile, the invention also discloses a dynamic impact experimental method based on high-frequency induction preheating. The invention has the characteristics of high measurement precision and good quality, and can ensure the stability and safety of high-temperature heating of the dynamic impact experiment system.
Description
Technical Field
The invention relates to the technical field of impact experiments, in particular to a dynamic impact experiment system and method based on high-frequency induction preheating.
Background
The research of the state equation is to describe the relation between the state quantities of the substance system. The properties and change rules of the substance under extreme conditions such as high temperature and high pressure can be summarized into a high-pressure state equation, and the method is further understanding of interaction potential and phase transformation among microscopic particles under the condition of high compression. Relevant researches are carried out, and the method has important value and significance for basic science such as atomic molecular physics, condensed state physics, planet and geophysical and application disciplines such as aerospace technology, material science, explosion mechanics, energy engineering and the like. The method can overcome the defect that the traditional impact loading method starting from room temperature can only obtain the material properties on one line of a pressure-temperature phase diagram, thereby realizing the purpose of researching the physical equation of the wide temperature zone.
The problems faced in developing the preheating impact experiment at present are that the high-temperature loading technology is complex, the temperature is difficult to accurately measure, the sample deformation is large, the signal-to-noise ratio of the test signal is poor, and the like, so that the experimental data with high confidence level is difficult to obtain. Therefore, it is very important and valuable to establish and develop a preheating experimental device based on the impact loading technology and the related high-temperature testing technology, and combine with the dynamic diagnosis technology, so as to obtain the dynamic response characteristics of the material in the preheating state, and provide more basic data and more comprehensive knowledge for the wide-area physical equation research.
The high-frequency induction heating technology in the preheating impact experiment can achieve rapid temperature rise, has the capability of heating temperature exceeding 3000K, and is a mature high-temperature heating technology. The preheating capacity of the current dynamic impact experiment is obviously insufficient, and the high-frequency induction heating technology can well expand the upper limit of the preheating temperature; meanwhile, the high-frequency induction heating technology has the capability of quickly raising the temperature, can avoid the problems of excessive oxidation deformation of a metal sample caused by long-term heating, overheating deformation failure of a supporting material and the like, and is a very suitable preheating technology. However, many problems also occur when the high-frequency induction heating technology is combined with the dynamic impact test, and mainly include: 1) the loading of high temperature can affect all sample frame materials for supporting samples, the strength of the materials is greatly reduced to cause failure, and the impact experiment chamber is smaller, so that how to effectively design and realize the system stability at high temperature is the problem to be solved firstly; 2) under the high-frequency electromagnetic induction heating, a common thermocouple can be subjected to strong electromagnetic interference due to the fact that an electric signal is collected, and therefore how to accurately measure the temperature is the second big problem which needs to be solved; 3) the sample can be oxidized and expanded and deformed at high temperature, so that the quality of a return light signal is reduced; meanwhile, high-temperature light radiation is strong, the signal-to-noise ratio of an optical fiber signal is poor due to the radiation light, and experimental data with high confidence level are difficult to obtain, which is the third and most core problem to be solved.
Therefore, it is desirable to design a system or method for high-frequency induction heating dynamic impact test to solve the above problems when the high-frequency induction heating technology is combined with the dynamic impact test.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a dynamic impact experiment system based on high-frequency induction preheating. Meanwhile, the invention also provides a dynamic impact experimental method based on the high-frequency induction preheating based on the dynamic impact experimental system.
The purpose of the invention is mainly realized by the following technical scheme: the utility model provides a dynamic impact experimental system based on high frequency induction preheats, includes the target rack, is connected with the sample frame on the target rack, the sample frame is outer to be surrounded there is magnetic induction coil, and magnetic induction coil is connected with high-frequency heating system and water cooling system, the sample frame outside is still the interval and is provided with sample temperature measurement system and sample system of testing the speed.
Furthermore, a ceramic frame is connected between the sample frame and the target frame.
Further, the sample holder is a graphite holder.
Further, the magnetic induction coil is supported by a coil support, and the coil support is connected with the target frame.
Furthermore, the sample temperature measurement system comprises an automatic translation table and a double colorimetric pyrometer, wherein a reflector is arranged on the automatic translation table, and the double colorimetric pyrometer faces the mirror surface of the reflector and is arranged at an interval with the reflector.
Furthermore, the sample speed measurement system comprises a probe and a speed measurement device in signal connection with the probe.
Further, the speed measuring device is a time-resolved particle imaging speed measuring system.
Furthermore, the sample speed measuring system also comprises a probe frame arranged on the target frame, the probe frame is also connected with the water cooling system, and the probe is arranged in the probe frame.
In summary, compared with the prior art, the dynamic impact experiment system based on high-frequency induction preheating of the invention has the following beneficial effects:
1. the high-temperature preheating system utilizes the high-frequency heating system and the magnetic induction coil for heating, can provide high-temperature preheating capacity higher than 2000K, cools the magnetic induction coil and the sample rack through the water cooling system during heating, can be combined with the high-frequency heating system for carrying out temperature control on a sample, and can ensure the stability and the safety of the high-temperature heating of the system because the sample temperature measuring system and the sample speed measuring system are arranged at intervals with the sample rack.
2. The ceramic rack is used for isolating the sample rack from the target rack, so that a good insulating and heat-insulating effect can be achieved, and the target rack is prevented from being softened at high temperature and losing efficacy.
3. The sample temperature measuring system provided by the invention measures the temperature of the sample by using the double colorimetric pyrometers arranged at intervals with the sample, can accurately measure the temperature of the sample, cannot be damaged due to high temperature of the sample, and has high temperature measuring precision and good stability.
4. The invention utilizes the automatic translation table to move the reflector for translation, thereby adjusting the position of the reflector while not influencing the experiment, being convenient for measuring the temperature of different positions of the sample, and opening the reflector before the projectile is launched to avoid the influence of the reflector on the projectile to collide the sample.
5. The probe and the sample frame are arranged at intervals, so that the test probe can be prevented from being burnt out due to direct contact with a sample, the probe can be well protected, meanwhile, the probe is arranged on the probe frame, and the probe frame is connected with the water cooling system, so that the probe can be cooled through the water cooling system, the working temperature of the probe is reduced, and the working quality and the precision of the probe are improved.
Meanwhile, the invention also provides a dynamic impact experimental method based on the high-frequency induction preheating based on the dynamic impact experimental system, and the dynamic impact experimental method comprises the following steps:
s1, arranging a high-speed experimental cannon, and arranging an experimental target room with a transparent window at the position of the high-speed experimental cannon;
s2 a target frame is arranged in the experimental target chamber, an automatic translation table, a ceramic frame and a probe frame are arranged on the target frame, a reflector is arranged on the automatic translation table, a sample frame is arranged on the ceramic frame, a magnetic induction coil is surrounded outside the sample frame, a probe is arranged on the probe frame, and the high-speed experimental cannon, the reflector, the sample frame and the probe are sequentially arranged at intervals;
s3 the experimental target chamber is provided with a high frequency heating system, a water cooling system and a speed measuring device, the high frequency heating system is connected with the magnetic induction coil, the water cooling system is connected with the magnetic induction coil and the probe frame, the speed measuring device is connected with the probe, and a double colorimetric pyrometer is arranged outside the transparent window;
s4, fixing the sample in a sample rack, wherein the center of the sample is positioned on the central axis of the magnetic induction coil, so that the sample, the muzzle of the high-speed experimental gun and the probe are coaxially arranged, and the distance between the sample and the probe is more than 100 mm;
s5, closing the laboratory target chamber and vacuumizing the laboratory target chamber;
s6, after the experimental target chamber is vacuumized to the pressure required by the experiment, starting a high-frequency heating system to heat the sample through a magnetic induction coil, measuring the temperature of the sample through a double colorimetric pyrometer, and synchronously starting a water cooling system to cool the magnetic induction coil and a probe, so as to ensure that the temperature in the experimental target chamber is not higher than 30 ℃;
s7, when the measured temperature reaches the preset temperature, the automatic translation table moves the reflector to stagger the pellet track, the high-frequency heating system is closed, the high-speed experiment gun launches the pellet to impact the sample, and the probe detects the sample speed and records the speed through the speed measuring device;
and S8, closing all equipment, systems and power supplies, collecting data of the double colorimetric pyrometer and the speed measuring device, and completing the dynamic impact experiment.
In the above step S4, the surface is plated with an amorphous carbon film before the sample is fixed.
In step S6, inert gas may be blown onto the surface of the sample while the sample is heated.
The dynamic impact experiment method based on high-frequency induction preheating has the characteristics of high temperature and speed measurement accuracy and good quality, has high stability and safety, and can reduce adverse effects caused by oxidation deformation of a polished surface of a sample through coating and inert gas protection of the sample, thereby further improving the measurement accuracy of the sample.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a schematic plan view of a dynamic impact experimental system based on high-frequency induction preheating;
FIG. 2 is a schematic overall structure diagram of a dynamic impact experiment system based on high-frequency induction preheating;
FIG. 3 is a standard band diagram of signal amplitude measured by a dynamic impact experimental method based on high-frequency induction preheating;
FIG. 4 is a cross-sectional view of the sample free-face velocity history obtained after spectral analysis of the signal plot of FIG. 3;
the symbols in the figures are respectively represented as: 1. carrying out an experimental high-speed gun; 2. 4, pill forming; 3. a mirror; 4. an automatic translation stage; 5. a double colorimetric pyrometer; 6. a magnetic induction coil; 7. a sample; 8. a circular lumen; 9. a sample holder; 10. a ceramic frame; 11. a probe holder; 12. a probe; 13. a speed measuring device; 14. a target frame; 15. a coil support.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Referring to fig. 1 and 2, a first embodiment of the invention provides a dynamic impact experimental system based on high-frequency induction preheating, which includes a target holder 14, a sample holder 9 connected to the target holder 14, a magnetic induction coil 6 wound around the sample holder 9, a high-frequency heating system and a water cooling system connected to the magnetic induction coil 6, and a sample temperature measuring system and a sample speed measuring system arranged at intervals outside the sample holder 9.
The dynamic impact experiment system of this embodiment can arrange closed target room, laboratory, vacuum chamber etc. in when the application to in the whole experimental environment of control, avoid the environment to cause the influence to experimental data.
During the use, arrange sample 7 in sample frame 9, start the high frequency heating system, magnetic induction coil 6 circular telegram heats the sample, open water cooling system in step, sample temperature measurement system can carry out real-time measurement to sample 7 temperature among the heating process, after sample 7 temperature rose to required temperature, automatic translation platform removes the bullet track that staggers of speculum, close the high frequency heating system and stop heating, utilize experiment high-speed big gun 1 transmission bullet 2 striking sample 7 this moment, sample 7 translates in sample frame 9, sample speed measurement system can measure sample 7 speed, can obtain the experimental data through the data of gathering sample temperature measurement system and sample speed measurement system, accomplish whole dynamic impact experiment.
Based on this, the dynamic impact experiment system of this embodiment utilizes high-frequency heating system and magnetic induction coil 6 to heat sample 7, can obtain the high temperature preheating capacity that is greater than 2000K, cool down magnetic induction coil 6 and sample frame 9 through water cooling system during the heating, and the accessible is adjusted high-frequency heating system power and is carried out temperature control to sample 7, the temperature of guaranteeing the experimental environment is unlikely too high and causes the system to damage, and set up sample temperature measurement system and sample speed measurement system and sample frame 9 interval, and then make sample temperature measurement system and sample speed measurement system keep away from the heat source, can reduce the operational environment temperature of the two, guarantee the two stable work, the whole high temperature heating's of system stability and security are good.
Specifically, sample holder 9 can be set to cylindric structure, and the magnetic induction coil 6 of being convenient for encircles, and the inside circular chamber way 8 of sample holder 9 is convenient for fixed circular sample 7, and circular chamber way 8 both can regard as the detection route of sample speed measuring system, and the sample that also can be used to the sample removal strikes the passageway and uses, can design length and size according to the experiment needs.
The magnetic induction coil 6 is supported by a coil support 15, and the coil support 15 is connected to the target stand 14. Coil support 15 mainly used fixes magnetic induction coil 6 and supports it, and for the mounted position of conveniently adjusting magnetic induction coil 6, coil support 15 can set up elevation structure like electronic jar, rack elevation structure etc. and realize going up and down in order to adjust magnetic induction coil 6's height.
It should be noted that, the high-frequency heating system and the water cooling system can both adopt the structure of the prior art, so the embodiment does not describe in detail, and the prior art can be selected as long as the high-frequency heating system and the water cooling system can be realized, for example, the high-frequency heating system can be realized by directly adopting a high-frequency power supply, and a power converter can be added to adjust the power when necessary, or a protection circuit and the like can be added, and the system can be selected according to specific needs; the water cooling system can be composed of a water cooling machine and a water tank which are communicated by pipelines, and a water cooling machine temperature control system, a circulating water flow control system and the like are added as necessary. Because the prior art has many embodiments, the specific schemes of the high-frequency heating system and the water cooling system are not repeated in the embodiment.
Similarly, the target stand 14 may be a prior art target stand, such as a conventional metal target stand. If desired, support plates, height adjustment plates, etc. may be attached to the underside of the target stand 14 for supporting and adjusting the height of the corresponding structure mounted thereon for better support and positioning.
In order to avoid the target holder 14 from softening and deforming due to high temperature, a ceramic holder 10 is connected between the sample holder 9 and the target holder 14. The ceramic frame 10 is made of ceramic materials, has good insulating and heat-insulating effects, can insulate the heat of the sample frame 9, ensures that the target frame 14 has stable structure and is unlikely to deform and fail, and further can ensure the overall stability and safety of the system in the experimental process. Further, the ceramic frame 10 may be designed to be a plate structure to reduce the material, and corresponding fitting structures such as mounting holes and mounting grooves may be disposed thereon to fit with the sample frame 9.
In order to increase the supporting strength of the sample holder 9 at high temperature, a graphite holder is selected as the sample holder 9. Graphite frame adopts graphite to make, and graphite chemical property is stable, and has characteristics high temperature resistant, heat conduction, that the melting point is high, can guarantee graphite frame's structural strength under high temperature, and sample 7 supports stably, and graphite frame's high heat conduction characteristic can guarantee that sample 7 heating process in is heated and the heat dissipation is more even, improves sample 7's heating effect.
With continued reference to fig. 1 and 2, the sample thermometry system described above is primarily used for measuring the temperature of the sample 7. Specifically, the sample temperature measuring system at least comprises an automatic translation table 4 and a double colorimetric pyrometer 5, a reflecting mirror 3 capable of adjusting a reflecting angle is arranged on the automatic translation table 4, and the double colorimetric pyrometer 5 faces the mirror surface of the reflecting mirror 3 and is arranged at an interval with the reflecting mirror 3.
In the sample temperature measuring system, the reflecting angle of the reflecting mirror 3 is adjusted in advance, the mirror surface of the reflecting mirror 3 faces the double colorimetric pyrometer 5 and the sample 7, the reflecting mirror 3 reflects a sample thermal radiation wave signal to the double colorimetric pyrometer 5, and the double colorimetric pyrometer 5 receives a sample surface radiation heat signal and converts the sample surface radiation heat signal into a temperature signal to obtain a sample 7 surface real-time temperature value. When the temperature values of different positions of the sample 7 need to be measured, the reflector 3 can be driven to translate through the automatic translation stage 4, and then the thermal radiation wave signals of different positions of the sample 7 can be obtained through the position change of the reflector 3.
Specifically, the automatic translation table 4 can be automatically translated by adopting an electric control mode, a pneumatic control mode and a mechanical control mode. Furthermore, for convenient use, an electric control translation table is preferably selected. Furthermore, the electric control translation stage can be a linear electric control translation stage.
This sample temperature measurement system utilizes and the reflector 3 reflection sample thermal radiation ripples signal to adopt the two colorimetric pyrometers 5 that the interval set up to obtain sample thermal radiation ripples signal, can avoid two colorimetric pyrometers 5 to be close and receive the sample thermal radiation influence apart from sample 7, can further improve two colorimetric pyrometers 5's temperature measurement precision and result.
With continued reference to fig. 1 and fig. 2, the sample speed measurement system is mainly used for measuring the speed of the sample. Specifically, the sample speed measuring system at least comprises a probe 12 and a speed measuring device 13 in signal connection with the probe 12, and the probe 12 and the sample holder 9 are coaxially arranged.
In this sample speed measurement system, probe 12 accessible tail line is connected with speed sensor 13, and probe 12 and sample holder 9 coaxial setting to guarantee that sample 7 is located the two axis, when sample 7 receives the impact and removes, probe 12 obtains the dynamic movement signal of sample 7, recycles speed sensor 13 and obtains the dynamic movement signal, and converts into sample dynamic velocity signal, obtains sample speed.
Specifically, the probe 12 can be an optical fiber probe, and the speed measuring device 13 can be a time-resolved particle imaging speed measuring system, so that the optical fiber probe can be used for collecting dynamic optical signals reflected by the sample 7, and the time-resolved particle imaging speed measuring system can be used for recording and converting the dynamic optical signals into dynamic speed signals of the sample. Furthermore, the optical fiber probe can adopt a focusing lens probe to improve the quality of the return light signal.
In order to further improve the quality of the return light signal of the probe 12, the sample velocity measurement system further comprises a probe holder 11 arranged on the target holder 14, the probe holder 11 is also connected with the water cooling system, and the probe 12 is arranged in the probe holder 11. The water cooling system can continuously cool the probe 12 in the probe frame 11, reduce the working temperature of the probe 12, and improve the working quality and precision of the probe 12, so as to ensure the quality of return light signals.
In this embodiment, the sample temperature measuring system and the sample speed measuring system are respectively disposed on two sides of the sample holder 9. The sample temperature measurement system and the sample speed measurement system are respectively arranged on two sides of the sample frame 9, so that the mutual influence of the systems can be reduced during temperature measurement and speed measurement, and the experiment is more favorably carried out.
Specifically, the sample temperature measuring system and the sample speed measuring system are respectively arranged at two sides of a channel opening of the circular cavity 8. Further, can set gradually speculum 3, sample holder 9 and probe 12, the high-speed big gun 1 of experiment usefulness then sets up in speculum 3 one side and just to 8 one side passways of circular chamber, when needs launch pellet striking sample 7, usable automatic translation platform 4 drives 3 translation of speculum of 3 stagger pellet track, at this in-process, because probe 12 is located the opposite side passway of circular chamber 8, it can measure the speed entirely, need not to remove, whole experimentation is very convenient.
The second embodiment of the present invention provides a dynamic impact experimental method based on high-frequency induction preheating, which can be implemented based on the above dynamic impact experimental system based on high-frequency induction preheating, and specifically includes the following steps:
s1 is provided with a high-speed experimental cannon 1, and an experimental target room with a transparent window is arranged at the position of the high-speed experimental cannon. The experimental target chamber can be selected from the existing experimental target chambers for dynamic impact experiments, and the experimental target chambers are not described in too much detail here.
S2 a target frame 14 is arranged in an experimental target room, an automatic translation table 4, a ceramic frame 10 and a probe frame 11 are arranged on the target frame 14, a reflecting mirror 3 is arranged on the automatic translation table 4, a sample frame 9 is arranged on the ceramic frame 10, a magnetic induction coil 6 surrounds the sample frame 9, a probe 12 is arranged on the probe frame 11, and the high-speed experimental cannon 1, the reflecting mirror 3, the sample frame 9 and the probe 12 are sequentially arranged at intervals; during installation, the muzzle of the experimental cannon, the reflector 3 and the probe 12 are preferably coaxially arranged so as to ensure the accuracy of experimental data.
S3 the experimental target chamber sets up high frequency heating system, water cooling system and speed measuring device 13 outside, the high frequency heating system connects with magnetic induction coil 6, the water cooling system connects with magnetic induction coil 6 and probe holder 11, the said speed measuring device 13 connects with said probe 12, and set up the double colorimetric pyrometer 5 outside the transparent window; the high-frequency heating system, the water cooling system and the speed measuring device are arranged outside the experimental target chamber, so that the control and the operation are convenient, and the double colorimetric pyrometer 5 is arranged outside the transparent window, so that the temperature measurement of the double colorimetric pyrometer 5 can be ensured not to be influenced by the temperature in the experimental target chamber, and the installation and the angle adjustment are also convenient.
S4, fixing the sample 7 in the sample holder 9, wherein the center of the sample 7 is positioned on the central axis of the magnetic induction coil 6, so that the sample 7, the muzzle of the high-speed experimental gun and the probe 12 are coaxially arranged, and the distance between the sample 7 and the probe 12 is more than 100 mm; the sample 7, the muzzle of the high-speed experimental gun and the probe 12 are coaxially arranged, so that the impact position of the sample and the accuracy of speed measurement can be ensured, the distance between the sample 7 and the probe 12 is more than 100mm, the sample 7 can be prevented from contacting the probe 12 to damage the probe 12 due to high temperature, and the sample 7 also has a larger translation space. Specifically, the distance between the sample 7 and the probe 12 can be 100-300 mm, and preferably, the distance between the sample 7 and the probe 12 can be 100mm, 150mm or 200 mm.
S5, closing the laboratory target chamber and vacuumizing the laboratory target chamber;
s6, after the experimental target chamber is vacuumized to the pressure required by the experiment, starting a high-frequency heating system to heat a sample 7 through a magnetic induction coil 6, measuring the temperature of the sample through a double-colorimetric pyrometer 5, and synchronously starting a water cooling system to cool the magnetic induction coil 6 and a probe 12, so as to ensure that the temperature in the experimental target chamber is not higher than 30 ℃; the water cooling system can ensure the indoor temperature of the experimental target by adjusting the cooling temperature and the circulation rate of the cooling liquid, the indoor temperature of the experimental target is not higher than 30 ℃, the influence of heat radiation in the experimental target can be reduced, and the working environment and the experimental environment of the equipment in the experimental target are ensured.
S7, when the measured temperature reaches the preset temperature, the automatic translation table 4 moves the reflector 3 to stagger the pellet track, the high-frequency heating system is closed, the high-speed experimental gun 1 launches the pellet 2 to impact the sample 7, and the probe 12 detects the sample speed and records the speed through the speed measuring device 13;
and S8, closing all equipment, systems and power supplies, collecting data of the double colorimetric pyrometer 5 and the speed measuring device 13, and completing the dynamic impact experiment.
In the above step S4, the surface was plated with an amorphous carbon film before fixing the sample 7. Specifically, the surface of sample 7 is plated with an amorphous carbon film, so that adverse effects caused by high-temperature oxidation deformation of the polished surface of the sample can be prevented. Further, the thickness of the amorphous carbon film is 50-3000 nm. Preferably, the thickness of the amorphous carbon film is 100 nm.
In step S6, inert gas may be blown onto the surface of the sample 7 while the sample is heated. Specifically, inert gas blows to sample 7 surface through the gas pipeline, and usable inert gas protects sample 7 for prevent that sample polishing face oxidation deformation from reducing the signal quality of returning light, in order to improve experimental effect. Further, the blowing rate of the inert gas is 50 to 500sccm, and preferably, the blowing rate of the inert gas is 100 sccm.
In conclusion, the dynamic impact experimental method based on high-frequency induction preheating has the advantages of good experimental stability, accurate measurement and high precision and quality. Specifically, the method comprises the following steps: with two colorimetric pyrometers 5, probe 12 and sample 7 interval setting, can eliminate the sample high temperature radiation influence, improve the two measurement accuracy and quality, and cool down sample frame 9, target frame 14 and probe 12 through water cooling system, further guarantee experimental environment and probe 12 operating temperature, improve the stability of measurement quality and whole experimental environment, carry out coating film and inert gas protection to sample 7 simultaneously, the adverse effect that reducible sample polished surface oxidation deformation brought, further improve sample measurement accuracy.
To better illustrate the characteristics of the dynamic impact experimental method based on high-frequency induction preheating in the present embodiment, supplementary description is performed below with reference to the experimental test results:
FIG. 3 shows an original signal of the measured free surface velocity of the dynamic sample, which is converted to obtain a historical profile of the free surface velocity of the sample shown in FIG. 4; wherein the abscissa in fig. 3 represents time and the ordinate represents DPS signal amplitude; in fig. 4, the abscissa represents time and the ordinate represents the free surface velocity. As can be seen from fig. 3 and 4: the signal quality of the high-temperature preheating dynamic impact experiment is good, high-precision sample speed history can be obtained, and the dynamic impact experiment method has the characteristics of good quality, high precision and the like.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (9)
1. The utility model provides a developments impact experiment system based on high frequency induction preheats, includes the target frame, its characterized in that is connected with the sample frame on the target frame, the sample frame is outer to be surrounded there is magnetic induction coil, and magnetic induction coil is connected with high-frequency heating system and water cooling system, the sample frame outside is still the interval and is provided with sample temperature measurement system and sample system of testing the speed.
2. The dynamic impact testing system of claim 1, wherein a ceramic frame is further connected between the sample frame and the target frame.
3. The dynamic impact testing system of claim 1, wherein the sample holder is a graphite holder.
4. The dynamic impact testing system of claim 1, wherein said magnetic induction coils are supported by a coil support, said coil support being attached to a target frame.
5. The dynamic impact experimental system of claim 1, wherein the sample temperature measurement system comprises an automatic translation stage and a dual colorimetric pyrometer, the automatic translation stage is provided with a reflector, and the dual colorimetric pyrometer faces the mirror surface of the reflector and is spaced from the reflector.
6. The dynamic impact experiment system of claim 1, wherein the sample velocimetry system comprises a probe and a velocimetry device in signal connection with the probe.
7. The dynamic impact experimental system of claim 6, wherein the velocimetry device is a time-resolved particle imaging velocimetry system.
8. The dynamic impact experiment system of claim 6, wherein the sample velocimetry system further comprises a probe holder arranged on the target holder, the probe holder is also connected with the water cooling system, and the probe is arranged in the probe holder.
9. A dynamic impact experimental method based on high-frequency induction preheating is characterized by comprising the following steps:
s1, arranging a high-speed experimental cannon, and arranging an experimental target chamber with a transparent window at the cannon mouth of the high-speed experimental cannon;
s2 a target frame is arranged in the experimental target chamber, an automatic translation table, a ceramic frame and a probe frame are arranged on the target frame, a reflector is arranged on the automatic translation table, a sample frame is arranged on the ceramic frame, a magnetic induction coil is surrounded outside the sample frame, a probe is arranged on the probe frame, and the high-speed experimental cannon, the reflector, the sample frame and the probe are sequentially arranged at intervals;
s3 the experimental target chamber is provided with a high frequency heating system, a water cooling system and a speed measuring device, the high frequency heating system is connected with the magnetic induction coil, the water cooling system is connected with the magnetic induction coil and the probe frame, the speed measuring device is connected with the probe, and a double colorimetric pyrometer is arranged outside the transparent window;
s4, fixing the sample in a sample rack, wherein the center of the sample is positioned on the central axis of the magnetic induction coil, so that the sample, the muzzle of the high-speed experimental gun and the probe are coaxially arranged, and the distance between the sample and the probe is more than 100 mm;
s5, closing the laboratory target chamber and vacuumizing the laboratory target chamber;
s6, after the experimental target chamber is vacuumized to the pressure required by the experiment, starting a high-frequency heating system to heat the sample through a magnetic induction coil, measuring the temperature of the sample through a double colorimetric pyrometer, and synchronously starting a water cooling system to cool the magnetic induction coil and a probe, so as to ensure that the temperature in the experimental target chamber is not higher than 30 ℃;
s7, when the measured temperature reaches the preset temperature, the automatic translation table moves the reflector to stagger the pellet track, the high-frequency heating system is closed, the high-speed experiment gun launches the pellet to impact the sample, and the probe detects the sample speed and records the speed through the speed measuring device;
and S8, collecting data of the double colorimetric pyrometer and the speed measuring device, and finishing the dynamic impact experiment.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114088238A (en) * | 2021-11-18 | 2022-02-25 | 中国工程物理研究院流体物理研究所 | Picosecond time resolution impact temperature measurement system and method based on wide radiation spectrum |
| CN114544393A (en) * | 2022-02-08 | 2022-05-27 | 中国科学院力学研究所 | A high-speed impact test device for micro-particles under vacuum and high and low temperature loading |
| CN115452622A (en) * | 2022-08-26 | 2022-12-09 | 西南交通大学 | Device for reducing interface light of powder material in impact loading experiment and using method |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5770791A (en) * | 1996-06-14 | 1998-06-23 | Manahan, Sr.; Michael Peter | Method and apparatus for accurate measurement of impact fracture behavior |
| CN102095450A (en) * | 2010-12-09 | 2011-06-15 | 中国工程物理研究院流体物理研究所 | Single-shot multi-information diagnostic target |
| CN102530956A (en) * | 2011-12-07 | 2012-07-04 | 中国工程物理研究院流体物理研究所 | Explosive impact synthesis method for RuSi |
| CN102600769A (en) * | 2012-04-06 | 2012-07-25 | 北京理工大学 | High-quenching-rate material impact synthesis and recovery device |
| CN104597274A (en) * | 2015-01-14 | 2015-05-06 | 中国科学院力学研究所 | Measuring system for particle velocity of impact surface and free surface of light transmission material |
| CN104729293A (en) * | 2015-03-20 | 2015-06-24 | 重庆科技学院 | Flowing atmosphere hot/cold impact sintering resistance furnace |
| CN105222917A (en) * | 2015-09-22 | 2016-01-06 | 哈尔滨工业大学 | The contactless measurement of material surface temperature and device under a kind of rugged surroundings |
| CN107588480A (en) * | 2017-08-03 | 2018-01-16 | 合肥兆基模具工业有限公司 | A kind of good outdoor machine of air-conditioner case of inoxidizability |
| CN108147816A (en) * | 2017-12-12 | 2018-06-12 | 西南科技大学 | For the graphite support system of gas big gun/cannon pre-add thermal shock experiment |
| CN109883868A (en) * | 2019-03-22 | 2019-06-14 | 吉林大学 | Impact indentation test device under high temperature environment |
| CN209372786U (en) * | 2018-12-28 | 2019-09-10 | 长安大学 | An instrument for testing the flame retardant performance of asphalt materials |
-
2021
- 2021-03-10 CN CN202110261531.6A patent/CN113029825A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5770791A (en) * | 1996-06-14 | 1998-06-23 | Manahan, Sr.; Michael Peter | Method and apparatus for accurate measurement of impact fracture behavior |
| CN102095450A (en) * | 2010-12-09 | 2011-06-15 | 中国工程物理研究院流体物理研究所 | Single-shot multi-information diagnostic target |
| CN102530956A (en) * | 2011-12-07 | 2012-07-04 | 中国工程物理研究院流体物理研究所 | Explosive impact synthesis method for RuSi |
| CN102600769A (en) * | 2012-04-06 | 2012-07-25 | 北京理工大学 | High-quenching-rate material impact synthesis and recovery device |
| CN104597274A (en) * | 2015-01-14 | 2015-05-06 | 中国科学院力学研究所 | Measuring system for particle velocity of impact surface and free surface of light transmission material |
| CN104729293A (en) * | 2015-03-20 | 2015-06-24 | 重庆科技学院 | Flowing atmosphere hot/cold impact sintering resistance furnace |
| CN105222917A (en) * | 2015-09-22 | 2016-01-06 | 哈尔滨工业大学 | The contactless measurement of material surface temperature and device under a kind of rugged surroundings |
| CN107588480A (en) * | 2017-08-03 | 2018-01-16 | 合肥兆基模具工业有限公司 | A kind of good outdoor machine of air-conditioner case of inoxidizability |
| CN108147816A (en) * | 2017-12-12 | 2018-06-12 | 西南科技大学 | For the graphite support system of gas big gun/cannon pre-add thermal shock experiment |
| CN209372786U (en) * | 2018-12-28 | 2019-09-10 | 长安大学 | An instrument for testing the flame retardant performance of asphalt materials |
| CN109883868A (en) * | 2019-03-22 | 2019-06-14 | 吉林大学 | Impact indentation test device under high temperature environment |
Non-Patent Citations (2)
| Title |
|---|
| 杨铁江等: ""7075铝合金动态试验及其本构关系研究"", vol. 38, no. 11, pages 254 - 258 * |
| 赴意大利圣文森城代表团等: "《意大利、西德等国陶瓷科学研究情报》", vol. 1, 上海科学技术出版社, pages: 300 - 307 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114088238A (en) * | 2021-11-18 | 2022-02-25 | 中国工程物理研究院流体物理研究所 | Picosecond time resolution impact temperature measurement system and method based on wide radiation spectrum |
| CN114088238B (en) * | 2021-11-18 | 2023-08-01 | 中国工程物理研究院流体物理研究所 | Picosecond time-resolved impact temperature measurement system and method based on wide radiation spectrum |
| CN114544393A (en) * | 2022-02-08 | 2022-05-27 | 中国科学院力学研究所 | A high-speed impact test device for micro-particles under vacuum and high and low temperature loading |
| CN114544393B (en) * | 2022-02-08 | 2023-12-26 | 中国科学院力学研究所 | Vacuum and high-low temperature loaded micro-particle high-speed impact experimental device |
| CN115452622A (en) * | 2022-08-26 | 2022-12-09 | 西南交通大学 | Device for reducing interface light of powder material in impact loading experiment and using method |
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