CN111239325A - Pulse laser heating system for researching heat ablation of barrel - Google Patents
Pulse laser heating system for researching heat ablation of barrel Download PDFInfo
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- CN111239325A CN111239325A CN202010275530.2A CN202010275530A CN111239325A CN 111239325 A CN111239325 A CN 111239325A CN 202010275530 A CN202010275530 A CN 202010275530A CN 111239325 A CN111239325 A CN 111239325A
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- G—PHYSICS
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- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/72—Investigating presence of flaws
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/60—Investigating resistance of materials, e.g. refractory materials, to rapid heat changes
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Abstract
The invention belongs to the technical field of artillery life research, and particularly relates to a pulse laser heating system for researching barrel thermal ablation, which comprises a monitoring system, a pulse laser generating system, a detection system and an optical element adjusting system, wherein the monitoring system is used for monitoring the thermal ablation of a barrel; the pulse laser generating system is used for emitting pulse laser with adjustable period and duty ratio, and the pulse laser is incident to the workbench through the optical element adjusting system to heat a workpiece on the workbench; the detection system is used for detecting the laser power, the workpiece temperature and the surface ablation condition of the pulse laser in real time and sending detection data to the monitoring system; and the monitoring system is used for processing and displaying the data sent by the pulse laser generating system and the detection system. The invention can accurately control the heating temperature of the surface of the barrel by utilizing the high controllability of the laser, and improves the test efficiency of the barrel thermal ablation research.
Description
Technical Field
The invention belongs to the technical field of artillery life research, and particularly relates to a pulse laser heating system for researching thermal ablation of a barrel.
Background
The barrel is a key and important part of the artillery, bears high-temperature, high-pressure and high-speed gunpowder gas, and the performance and the service life of the barrel are key research objects of the life of the artillery. The ablation performance of the barrel is the most important factor limiting the life of the barrel. Barrel ablative wear damage is the result of a combination or interaction of numerous factors, dominated by thermal factors.
The research on the heat ablation of the barrel at the present stage is mainly to carry out live-action tests, and the research on the heat ablation of the barrel under the condition consumes a great deal of time, ammunition, personnel and cost, and the dynamic change process of the heat ablation of the barrel is difficult to observe.
Because of strong laser emission capability and high energy concentration, the medium-intensity laser beam is converged, so that high temperature of thousands to tens of thousands of degrees can be generated at a focus, and the laser can be used as a heat source for application in many occasions. Meanwhile, the laser has high controllability, and the period and the duty ratio of laser pulses can be flexibly set through the programming of the single chip microcomputer, so that the laser technology is applied to many fields. However, the pulse laser heating system is not applied to the study of thermal ablation of the barrel, and therefore, a pulse laser heating system for studying thermal ablation of the barrel needs to be provided to improve the experimental efficiency of the study of thermal ablation of the barrel.
Disclosure of Invention
The invention aims to provide a pulse laser heating system for researching heat ablation of a barrel, which simulates the heat ablation phenomenon of the barrel when a gun is launched by laser heating, observes the dynamic change process of the heat ablation of the barrel by a simulation test, carries out researches such as life prediction, fault diagnosis and the like of the gun barrel, provides a new method and an effective means for researching the heat ablation mechanism of the barrel and the service life of the gun, and achieves the aim of saving manpower, material resources and financial resources.
In order to solve the technical problems, the invention adopts the technical scheme that: a pulse laser heating system for researching heat ablation of a barrel comprises a monitoring system and an optical element adjusting system of a pulse laser generation system detection system
The pulse laser generating system is used for emitting pulse laser with adjustable period and duty ratio, and the pulse laser is incident to the workbench through the optical element adjusting system to heat a workpiece on the workbench; the detection system is used for detecting the laser power, the workpiece temperature and the surface ablation condition of the pulse laser in real time and sending detection data to the monitoring system; and the monitoring system is used for processing and displaying the data sent by the pulse laser generating system and the detection system.
The pulse laser generating system comprises a single chip microcomputer and a pulse laser, the pulse laser emitted by the pulse laser emits pulse laser to the optical element adjusting system through an optical fiber, and the single chip microcomputer is used for controlling the period, duty ratio and waveform of the pulse laser emitted by the pulse laser.
The single chip microcomputer is connected with the monitoring system and used for sending the period, the duty ratio and the waveform signal of the pulse laser emitted by the pulse laser to the monitoring system.
The optical element adjusting system comprises a light splitting device, a laser power meter and an output lens, wherein pulse laser emitted by the pulse laser generating system is divided into two beams after passing through the light splitting device, one beam is incident to the laser power meter to detect the power fluctuation of the pulser light, and the other beam is incident to a workpiece after passing through the output lens.
The light splitting device comprises a half-wave plate and a polarization beam splitter.
The output lens is used for adjusting the spot size of the pulse laser so as to adjust the size of the heating area.
The optical element adjustment system further comprises an optical isolator for isolating laser light returning to the pulsed laser generation system.
The detection system comprises a laser power meter, a non-contact type temperature measuring instrument and a CCD (charge coupled device) camera, wherein the non-contact type temperature measuring instrument is used for measuring the surface temperature of the workpiece, the CCD camera is used for detecting and obtaining an optical image of the ablation of the surface of the workpiece, and the laser power meter is used for measuring the power fluctuation of the pulse laser.
The monitoring system comprises a processor and a display, wherein the processor is used for receiving a pulse frequency signal sent by the pulse laser generating system, detecting laser power fluctuation data, workpiece surface temperature data and optical image data of workpiece surface ablation sent by the system, and sending a receiving receipt to the display for displaying; and the optical image data of the ablation of the surface of the workpiece is converted into digital signals and then sent to a display for display.
Compared with the prior art, the invention has the following beneficial effects: the invention provides a pulse laser heating system for researching thermal ablation of a barrel, which can be used for researching thermal ablation of the barrel and carrying out research works such as life prediction, fault diagnosis and the like of an artillery barrel. The laser high controllability is utilized, the period, duty ratio and waveform of laser pulse are set through single chip microcomputer programming, so that the temperature of barrel surface heating is accurately controlled, a plurality of shells are simulated to be continuously launched by the artillery, the dynamic process of barrel thermal ablation is observed by utilizing a detection system, a new method and an effective means are provided for barrel thermal ablation mechanism and artillery service life research, and the purpose of saving manpower, material resources and financial resources is achieved. The pulse laser heating system provided by the invention integrates the functions of adjusting the heating temperature, heating area and monitoring the dynamic condition of heating in real time, and can simulate the thermal ablation phenomenon generated when a gun is launched through the system and monitor the dynamic process of thermal ablation of a barrel in real time.
Drawings
Fig. 1 is a block diagram of a pulsed laser heating system for studying thermal ablation of a barrel according to an embodiment of the present invention;
FIG. 2 is an optical diagram of a pulsed laser heating system for studying thermal ablation of a barrel according to an embodiment of the present invention;
in the figure: 10-a monitoring system, 20-a pulse laser generating system, 30-a detecting system and 40-an optical element adjusting system; 1-pulse laser, 2-optical fiber, 3-half-wave plate, 4-polarization spectroscope, 5-laser power meter, 6-optical isolator, 7-output lens, 8-workpiece and 9-workbench.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-2, an embodiment of the present invention provides a pulsed laser heating system for studying thermal ablation of a barrel, including a monitoring system 10, a pulsed laser generating system 20, a detecting system 30, and an optical element adjusting system 40; the pulse laser generating system 20 is used for emitting pulse laser with adjustable period and duty ratio, and the pulse laser is incident to the worktable through the optical element adjusting system 40 to heat the workpiece 8 on the worktable; the detection system 30 is used for detecting the laser power of the pulse laser, the workpiece temperature and the surface ablation condition in real time and sending detection data to the monitoring system 10; the monitoring system 10 is used for processing and displaying data sent by the pulsed laser generation system 20 and the detection system 30.
Specifically, in this embodiment, the pulse laser generating system 20 includes a single chip microcomputer and a pulse laser 1. As shown in fig. 2, the pulse laser emitted from the pulse laser 1 emits pulse laser to the optical element adjusting system 40 through the optical fiber 2, wherein the single chip is used for controlling the period, duty ratio and waveform of the pulse laser emitted from the pulse laser 1. The single chip microcomputer works by a self-programmed program, and the period, the duty ratio and the waveform of laser pulse can be flexibly set by the program, so that the temperature for heating the surface of the barrel can be accurately controlled, the barrel is subjected to high-temperature impact when the cannonball is simulated to continuously launch cannonballs, and the simulation of different launching frequencies can be realized by setting different parameters. And meanwhile, the system is connected with a monitoring system, and the pulse frequency of laser heating (namely the number of shells launched by the simulated artillery) is displayed by monitoring the running condition of the self-programming.
Further, in this embodiment, the single chip microcomputer is connected to the monitoring system 10, and is configured to send the period, duty ratio, and waveform signal of the pulse laser emitted by the pulse laser 1 to the monitoring system for processing and displaying.
Further, as shown in fig. 2, in this embodiment, the optical element adjusting system 40 includes a light splitter, a laser power meter 5 and an output lens 7, the pulse laser emitted by the pulse laser 1 is split into two beams by the light splitter, one beam enters the laser power meter 5 to detect the power fluctuation of the pulser light, and the other beam enters the workpiece 8 after passing through the output lens 7. The laser power meter detects the power fluctuation of one beam of light, then the fluctuation of the laser power of the incident workpiece surface is represented, and the laser power of the incident workpiece surface can be obtained by calibrating the power ratio of the two beams of light.
Further, as shown in fig. 2, in the present embodiment, the light splitting device includes a half-wave plate 3 and a polarization beam splitter 4. The laser power incident to the surface of the workpiece can be conveniently adjusted through the arrangement of the half-wave plate and the polarization beam splitter.
Specifically, in this embodiment, the output lens 7 is used to adjust the spot size of the pulsed laser light, so as to adjust the size of the heating area.
Specifically, as shown in fig. 2, the optical element adjusting system 40 further includes an optical isolator 6, and the optical isolator 6 is used for isolating the laser light returned to the pulsed laser light generating system 20. Optical isolator can set up between polarization beam splitter 4 and output lens 7, also can set up between pulse laser 1 and polarization beam splitter 4, and optical isolator only allows light to pass through to a direction, can block the harm that laser's reflection caused pulse laser, improves the output laser stability and the laser life-span of laser.
Specifically, in this embodiment, the detection system 30 includes a laser power meter, a non-contact thermometer and a CCD camera, the non-contact thermometer is used for measuring the surface temperature of the workpiece, the CCD camera is used for detecting an optical image of the ablation of the surface of the workpiece, and the laser power meter is used for measuring the power fluctuation of the pulse laser.
Further, in this embodiment, the monitoring system includes a processor and a display, the processor is configured to receive the pulse number signal from the pulsed laser generating system 20, and detect the laser power fluctuation data, the workpiece surface temperature data, and the optical image data of workpiece surface ablation sent by the system 30, and send a receipt to the display for display; and the optical image data of the ablation of the surface of the workpiece is converted into digital signals and then sent to a display for display.
The invention aims to provide a pulse laser heating system for researching heat ablation of a barrel, which takes pulse laser as a heat source and irradiates the surface of an object to heat a workpiece. The period, duty ratio and waveform of the laser pulse are flexibly set in the system, so that the heating temperature of the surface of the barrel is accurately controlled, and the high-temperature impact of the barrel when the cannonball continuously launches cannonballs is simulated. Meanwhile, simulation of different transmitting frequencies can be realized by setting different parameters, so that the thermal ablation phenomenon generated by the gun barrel is researched.
Laser emitted by the pulse laser is focused by the optical fiber, irradiates the half-wave plate to be subjected to light splitting regulation, passes through the polarization beam splitter and is split into a first laser beam and a second laser beam by the polarization beam splitter. Wherein, as soon as the laser beam irradiates the laser power meter, the laser power meter can measure the laser power. The laser beam passes through an optical isolator which allows light to pass only in one direction and blocks the reflection of the laser light. Finally, the laser passes through an output lens, and the size of the heating area can be adjusted. The light is irradiated on the surface of the workpiece through the optical element dimming system, and the light energy is converted into heat energy to heat the irradiated area, so that the surface of the workpiece is thermally ablated. A non-contact type temperature measuring instrument and a CCD camera are arranged around the workpiece.
The single chip microcomputer for controlling the pulse laser, the laser power meter and the detection system are connected with the monitoring system, detected data are transmitted to the monitoring system in real time, and the monitoring system can process and display the data (temperature, power, workpiece surface signals and the like) fed back by the pulse laser, the detection system and the laser power meter in real time. The monitoring system displays the laser power through data fed back by the laser power meter; the pulse frequency of laser heating (namely the number of simulated shells emitted by the artillery) is monitored and displayed through the running conditions of the pulse laser and the self-programming of the singlechip; displaying the current lowest temperature, the highest temperature, the temperature difference and the like in real time through data transmitted by the non-contact type temperature measuring instrument; the ablated optical image is converted into a digital signal through a CCD camera, and the surface change condition of the barrel ablation is displayed through the processing of specific software.
The invention provides a pulse laser heating system for researching thermal ablation of a barrel, which is beneficial to researching the work of life prediction, fault diagnosis and the like of a gun barrel. The laser height controllability is utilized, the period, duty ratio and waveform of laser pulse are set through single chip microcomputer programming, so that the temperature of barrel surface heating is accurately controlled, a plurality of shells are simulated to be continuously launched by an artillery, the dynamic process of thermal ablation of the barrel is observed by utilizing a detection system, and the test efficiency is improved. The invention integrates the functions of adjusting the heating temperature, heating area and monitoring the dynamic condition of heating in real time, and monitors the dynamic process of thermal ablation of the barrel in real time by simulating the thermal ablation phenomenon generated when the cannon is launched. The invention can also realize the simulation of different transmitting frequencies, simplifies the test conditions, saves resources, saves the test cost, has higher practical value, and provides a new method and an effective means for the research of the barrel thermal ablation mechanism and the cannon service life.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. A pulsed laser heating system for studying thermal ablation of barrels, comprising a monitoring system (10), a pulsed laser generating system (20), a detection system (30) and an optical element adjustment system (40);
the pulse laser generating system (20) is used for emitting pulse laser with adjustable period and duty ratio, and the pulse laser is incident to the workbench through the optical element adjusting system (40) to heat a workpiece (8) on the workbench; the detection system (30) is used for detecting the laser power, the workpiece temperature and the surface ablation condition of the pulse laser in real time and sending detection data to the monitoring system (10); the monitoring system (10) is used for processing and displaying data sent by the pulse laser generation system (20) and the detection system (30).
2. The pulsed laser heating system for studying thermal ablation of a barrel according to claim 1, wherein the pulsed laser generating system (20) comprises a single chip microcomputer and a pulsed laser (1), the pulsed laser emitted by the pulsed laser (1) emits pulsed laser to the optical element regulating system (40) through the optical fiber (2), and the single chip microcomputer is used for controlling the period, duty cycle and waveform of the pulsed laser emitted by the pulsed laser (1).
3. The pulsed laser heating system for studying barrel thermal ablation of claim 2, wherein the single chip microcomputer is connected with the monitoring system and is used for sending the period, duty cycle and waveform signals of the pulsed laser emitted by the pulsed laser (1) to the monitoring system.
4. The pulsed laser heating system for studying barrel thermal ablation of claim 1, wherein the optical element adjusting system (40) comprises a light splitting device, a laser power meter (5) and an output lens (7), the pulsed laser emitted by the pulsed laser generating system (20) is split into two beams after passing through the light splitting device, one beam is incident on the laser power meter (5) to detect power fluctuation of the pulser light, and the other beam is incident on the workpiece (8) after passing through the output lens (7).
5. A pulsed laser heating system for studying thermal ablation of barrels as claimed in claim 4, characterized in that the beam splitting device comprises a half-wave plate (3) and a polarizing beam splitter (4).
6. A pulsed laser heating system for studying thermal ablation of barrels as claimed in claim 4, characterised in that said output lens (7) is used to adjust the spot size of the pulsed laser to adjust the size of the heating area.
7. A pulsed laser heating system for studying thermal ablation of barrels as claimed in claim 4, wherein said optical element conditioning system (40) further comprises an optical isolator (6) for isolating the laser light returning to said pulsed laser generating system (20).
8. A pulsed laser heating system for studying thermal ablation of barrels as claimed in claim 1, characterised in that the detection system (30) comprises a laser power meter, a non-contact thermometer for measuring the surface temperature of the workpiece and a CCD camera for detecting the optical image of the ablation of the surface of the workpiece, the laser power meter being adapted to measure the power fluctuations of the pulsed laser.
9. The pulsed laser heating system for studying barrel thermal ablation of claim 8, wherein the monitoring system comprises a processor and a display, the processor is used for receiving the pulse number signal sent by the pulsed laser generating system (20) and detecting laser power fluctuation data sent by the system (30), workpiece surface temperature data and optical image data of workpiece surface ablation, and sending a receiving receipt to the display for displaying; and the optical image data of the ablation of the surface of the workpiece is converted into digital signals and then sent to a display for display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010275530.2A CN111239325A (en) | 2020-04-09 | 2020-04-09 | Pulse laser heating system for researching heat ablation of barrel |
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| CN202010275530.2A CN111239325A (en) | 2020-04-09 | 2020-04-09 | Pulse laser heating system for researching heat ablation of barrel |
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| CN111239325A true CN111239325A (en) | 2020-06-05 |
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| CN202010275530.2A Pending CN111239325A (en) | 2020-04-09 | 2020-04-09 | Pulse laser heating system for researching heat ablation of barrel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111854519A (en) * | 2020-07-16 | 2020-10-30 | 西安昆仑工业（集团）有限责任公司 | Artillery temperature impact test system and test method |
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2020
- 2020-04-09 CN CN202010275530.2A patent/CN111239325A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111854519A (en) * | 2020-07-16 | 2020-10-30 | 西安昆仑工业（集团）有限责任公司 | Artillery temperature impact test system and test method |
| CN111854519B (en) * | 2020-07-16 | 2022-09-16 | 西安昆仑工业（集团）有限责任公司 | Artillery temperature impact test system and test method |
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