CN109507212B - System and method for testing reflectivity of wave-absorbing material - Google Patents
System and method for testing reflectivity of wave-absorbing material Download PDFInfo
- Publication number
- CN109507212B CN109507212B CN201811623286.3A CN201811623286A CN109507212B CN 109507212 B CN109507212 B CN 109507212B CN 201811623286 A CN201811623286 A CN 201811623286A CN 109507212 B CN109507212 B CN 109507212B
- Authority
- CN
- China
- Prior art keywords
- furnace
- bearing platform
- heating furnace
- reflectivity
- workpiece bearing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N22/00—Investigating or analysing materials by the use of microwaves or radio waves, i.e. electromagnetic waves with a wavelength of one millimetre or more
Abstract
The invention discloses a reflectivity test system and a reflectivity test method of a wave-absorbing material, wherein the reflectivity test system comprises an incidence angle adjusting device, a workpiece bearing platform and a correlation antenna, the incidence angle adjusting device comprises a bracket, a cantilever and a rotary driving piece, the cantilever is arranged on the bracket through a vertical surface automatic displacement component and can be driven by the vertical surface automatic displacement component to move in a vertical plane, the rotary driving piece is arranged on the cantilever, and the correlation antenna is connected with a driving end of the rotary driving piece and can be driven by the rotary driving piece to rotate around a horizontal axis. The testing method comprises the steps of driving the heating furnace to move by the manipulator to enable the workpiece bearing platform to extend into a furnace mouth, starting the heating furnace to heat and preserve heat of a sample plate to be tested, driving the heating furnace to move by the manipulator to enable the heating furnace to be far away from the workpiece bearing platform, and starting the correlation antenna to test reflectivity. The invention has the advantages of simple structure, low cost, stable and reliable work, high adjusting precision, long service life, easy manufacture and assembly and the like.
Description
Technical Field
The invention relates to the technical field of microwave test equipment, in particular to a system and a method for testing the reflectivity of a wave-absorbing material.
Background
The radar wave-absorbing material (the wave-absorbing material for short) has wide application in the civil and military fields, and the radar reflectivity (the reflectivity for short) is an important index parameter for evaluating the wave-absorbing performance of the wave-absorbing material. The technology for measuring the reflectivity of the wave-absorbing material at normal temperature is mature and widely applied, but along with the improvement of the temperature resistance of the wave-absorbing material by an engine, a high-speed aircraft and a high-power microwave device, the requirement of a radar reflectivity test system of the wave-absorbing material at high temperature is higher and higher.
At present, a high-temperature reflectivity test system mainly adopts a lower heating mode, namely, a heating body is arranged below a sample plate to be tested, a radar wave incident surface is an upper surface, and a hot surface and the radar wave incident surface are not the same surface when the high-temperature reflectivity of the sample plate to be tested is tested, so that the high-temperature radar wave-absorbing material with a heat insulation function cannot accurately represent the wave-absorbing performance of the high-temperature environment. Meanwhile, the test base of the existing lower heating type reflectivity test system mainly comprises a flat test base and a bevel edge test base. The flat plate test seat is the same as a test base of a normal temperature reflectivity test system, a heating element is arranged below a sample plate to be tested, but the arrangement area of the heating element cannot exceed the size of the sample plate to be tested and is limited by installation accessories such as a heating element electrode and a binding post, and the area of the heating element can be smaller than that of the sample plate to be tested, so that the problem of uneven heating exists, the temperature of the central area of the sample plate to be tested is obviously higher than the surrounding area, the test temperature is inaccurate, and the sample plate to be tested is deformed due to. In order to solve the problem of heating uniformity, the chinese patent with application number 201320235754.6 discloses a high-temperature reflectivity test platform with a bevel edge test seat, which increases the area of a heating element, so that the area of the heating element is larger than that of a test sample plate, thereby better relieving the problem of uneven heating of the flat test seat. In addition, the sample heat preservation system of the existing high-temperature reflectivity testing system adopts a manual opening mode, and the opening mode has the defects that high temperature easily causes personnel burn, the operation time is long, and the like.
Because the wave-absorbing material faces working conditions of different electromagnetic wave incidence angles in the using process, the reflectivity data of the material under the conditions of different incidence angles is very important, and the radar reflectivity testing system is required to be capable of adjusting different incidence angles. The existing radar reflectivity test system mainly has two methods for measuring the reflectivity under different incidence angles: one method is to adopt an electric arc gear to drive an antenna to rotate so as to realize the measurement of the reflectivity at different angles, but the span of the gear adopted by the method is large, very strict requirements are provided for the precision and the rigidity of the gear, the problems of high manufacturing and installation difficulty, easy gear clamping, high cost and short service life exist; the second is to use a small span gear to drive a 7-shaped cantilever to drive the antenna to rotate, although the cost of the method is low, the cantilever structure is easy to cause the antenna to shake, and the gear is easy to deform after the use time is long.
Disclosure of Invention
The invention aims to solve the technical problems of the prior art, provides a reflectivity test system of a wave-absorbing material, which has the advantages of simple structure, low cost, stable and reliable work, high adjustment precision, long service life and easy manufacture and assembly, and also correspondingly provides a method for testing the reflectivity of the wave-absorbing material by adopting the reflectivity test system.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides a reflectivity test system of absorbing material, includes angle of incidence adjusting device, work piece cushion cap and correlation antenna, angle of incidence adjusting device includes support, cantilever and rotary driving piece, the cantilever is installed on the support and can be removed in vertical plane by the automatic displacement subassembly drive of vertical plane through a vertical plane automatic displacement subassembly, rotary driving piece installs on the cantilever, correlation antenna links to each other with rotary driving piece's drive end and can rotate around horizontal axis by the rotary driving piece drive.
As a further improvement of the above-described reflectivity test system:
vertical plane automatic displacement subassembly is including slideing the first slide of locating on the support and slideing the second slide of locating on the first slide, the slip direction of first slide and second slide all is parallel with vertical plane, just the slip direction of the slip direction perpendicular to second slide of first slide, the cantilever is installed on the second slide, vertical plane automatic displacement subassembly is still including being used for driving the gliding first slide actuating mechanism of first slide and being used for driving the gliding second slide actuating mechanism of second slide.
The first sliding driving mechanism and the second sliding driving mechanism are gear rack mechanisms driven by a servo motor or ball screw mechanisms driven by the servo motor.
The servo motor is provided with a brake device for braking when power is off.
The reflectivity test system is further provided with a heating device, the heating device comprises a manipulator and a heating furnace with a hearth, the hearth is provided with a furnace mouth with a downward opening, and the manipulator is connected with the heating furnace and can drive the heating furnace to move so that a workpiece bearing platform extends into the furnace mouth or the workpiece bearing platform is withdrawn and kept away from the furnace mouth.
The bottom surface of the hearth is a horizontal plane, the opening size of the fire hole is smaller than that of the bottom surface of the hearth, and the fire hole is positioned in the middle of the bottom surface of the hearth; the heating furnace is hung at the driving end of the manipulator and the furnace mouth is kept vertically downward in the moving process of the heating furnace.
The wall of the heating furnace comprises a heat insulation layer, a heat insulation layer and a shell which are arranged from inside to outside, wherein the heat insulation layer is made of ceramic composite material skin and aerogel, and the heat insulation layer is made of a fiber heat insulation board and fiber heat insulation cotton.
The heating furnace comprises a furnace shell which encloses the hearth, and a plurality of parallel heating rods which are uniformly arranged at intervals are arranged on the upper part and the peripheral side part of the hearth; the furnace is provided with a plurality of temperature sensors for detecting the temperature in the furnace, and the temperature sensors are uniformly arranged right above the furnace mouth.
A test method for testing the reflectivity of a wave absorbing material by adopting the reflectivity test system comprises the following steps:
(A) placing a sample plate to be tested on a workpiece bearing platform, driving a heating furnace to move to the position above the workpiece bearing platform through a manipulator, then driving the heating furnace to move downwards, enabling the workpiece bearing platform to extend into a furnace mouth of the heating furnace, and enabling the sample plate to be tested on the workpiece bearing platform to be positioned in a furnace chamber;
(B) starting a heating furnace to heat the sample plate to be detected until the temperature of the sample plate to be detected reaches a set temperature, and preserving the heat for at least 15 minutes;
(C) the heating furnace is driven to move upwards by the manipulator, so that the workpiece bearing platform is retreated from the workpiece bearing platform, and then the heating furnace is driven to move to a position far away from the workpiece bearing platform;
(D) the correlation antenna is driven to do vertical and horizontal motion in a vertical plane through the incident angle adjusting device, so that the correlation antenna moves to a preset testing position along a preset arc-shaped track with the workpiece bearing platform as a circle center, and meanwhile, the correlation antenna is driven to rotate around a horizontal axis through the rotary driving piece, so that the correlation antenna points to the workpiece bearing platform, and the correlation antenna is started to perform reflectivity testing.
As a further improvement of the above test method:
the bottom surface of the hearth and the upper surface of the workpiece bearing platform are horizontal surfaces, and in the step (A), the depth of the workpiece bearing platform extending into the mouth of the heating furnace is as follows: the bottom surface of the hearth is flush with the upper surface of the workpiece bearing platform.
Compared with the prior art, the invention has the advantages that: according to the reflectivity test system for the wave-absorbing material, the incidence angle adjusting device adopts the vertical surface automatic displacement assembly to drive the cantilever to move in the vertical plane, and adopts the rotary driving piece to drive the correlation antenna to rotate around the horizontal axis for adjusting the angle, so that the diameter of the circular motion track of the correlation antenna and the angle of the correlation antenna can be automatically adjusted, the correlation antenna can face the workpiece bearing platform from different distances and positions, and the reflectivity test can be further carried out on the sample plate to be tested on the workpiece bearing platform. The whole incidence angle adjusting device has the advantages of simple structure, low cost, stable and reliable work, high adjusting precision, long service life and easy manufacture and assembly due to the combination of the vertical automatic displacement assembly and the rotary driving piece.
Drawings
Fig. 1 is a schematic three-dimensional structure diagram of a wave-absorbing material reflectivity testing system.
Fig. 2 is a front view of the incident angle adjusting device.
Fig. 3 is a schematic top view of the incident angle adjusting device.
Fig. 4 is a side view of the incident angle adjusting device.
FIG. 5 is a schematic sectional view of the heating furnace.
FIG. 6 is a schematic sectional view of the workpiece support platform extending into the furnace mouth.
Illustration of the drawings:
1. an incident angle adjusting device; 101. a support; 102. a cantilever; 103. a rotary drive member; 104. a first slider; 105. a second slide carriage; 106. a first slide drive mechanism; 107. a second slide drive mechanism; 2. a workpiece support table; 3. a heating device; 31. heating furnace; 311. a hearth; 312. a furnace mouth; 313. a thermal insulation layer; 314. a heat-insulating layer; 315. a housing; 316. a heating rod; 317. a temperature sensor; 32. a manipulator; 4. a correlation antenna.
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples.
As shown in fig. 1 to 4, the reflectivity testing system for a wave-absorbing material of this embodiment includes an incident angle adjusting device 1, a workpiece platform 2 and a correlation antenna 4, the workpiece platform 2 is fixedly disposed, the incident angle adjusting device 1 includes a support 101, a cantilever 102 and a rotary driving member 103, the cantilever 102 is mounted on the support 101 through a vertical plane automatic displacement assembly and can be driven by the vertical plane automatic displacement assembly to move in a vertical plane, the rotary driving member 103 is mounted on the cantilever 102, and the correlation antenna 4 is connected with a driving end of the rotary driving member 103 and can be driven by the rotary driving member 103 to rotate around a horizontal axis. The incidence angle adjusting device 1 of the reflectivity test system adopts the vertical surface automatic displacement component to drive the cantilever 102 to move in a vertical plane, adopts the rotary driving component 103 to drive the correlation antenna 4 to rotate around a horizontal axis to adjust the angle, can realize automatic adjustment of the diameter of the circular arc motion track of the correlation antenna 4 and the angle of the correlation antenna 4, and further enables the correlation antenna 4 to face the workpiece bearing platform 2 from different distances and positions, thereby carrying out reflectivity test on a sample plate to be tested on the workpiece bearing platform 2. Due to the combination of the vertical automatic displacement component and the rotary driving component 103, the whole incident angle adjusting device 1 has the advantages of simple structure, low cost, stable and reliable work, high adjusting precision, long service life and easy manufacture and assembly.
In this embodiment, the vertical automatic displacement assembly drives the correlation antenna 4 to move in the vertical plane in a combined motion manner of two crossed linear motions. Preferably, the vertical automatic displacement assembly comprises a first slide carriage 104 slidably disposed on the support 101 and a second slide carriage 105 slidably disposed on the first slide carriage 104, sliding directions of the first slide carriage 104 and the second slide carriage 105 are both parallel to a vertical plane, the sliding direction of the first slide carriage 104 is perpendicular to the sliding direction of the second slide carriage 105, the cantilever 102 is mounted on the second slide carriage 105, and the vertical automatic displacement assembly further comprises a first sliding driving mechanism 106 for driving the first slide carriage 104 to slide and a second sliding driving mechanism 107 for driving the second slide carriage 105 to slide. The vertical automatic displacement assembly is simple in structure, low in cost and easy to maintain. And the sliding type structure is adopted, so that the device is not easy to deform, has good movement smoothness, works stably and reliably, and has long service life.
The first sliding seat 104 is slidably disposed on the support 101 through more than two groups of linear guide rails, and the second sliding seat 105 is slidably disposed on the second sliding seat 105 through more than one group of linear guide rails, so that the first sliding seat 104 and the second sliding seat 105 can have good sliding stability, and the linear guide rails adopt existing mature components. Preferably, the sliding direction of the first carriage 104 is a horizontal direction, and the sliding direction of the second carriage 105 is a vertical direction.
In this embodiment, the first slide driving mechanism 106 and the second slide driving mechanism 107 are rack and pinion mechanisms driven by a servo motor or ball screw mechanisms driven by a servo motor, and are low in cost, high in driving accuracy, and easy to control. The rack and pinion mechanism and the ball screw mechanism are both existing mature parts. Specifically, the first sliding driving mechanism 106 is a gear-rack mechanism driven by a servo motor, wherein a gear is mounted on the first sliding seat 104, a rack is mounted on the bracket 101, the gear is engaged with the rack, an output shaft of the servo motor is connected with the gear, and preferably, the servo motor is connected with the gear through a speed reducer. The second slide driving mechanism 107 is a ball screw mechanism driven by a servo motor, wherein a screw of the ball screw mechanism is rotatably mounted, a nut of the ball screw mechanism is mounted on the second slide base 105, and an output shaft of the servo motor is connected with the screw, preferably, the servo motor is connected with the screw through a speed reducer. In this embodiment, the rotary drive member 103 is a servo motor.
In this embodiment, servo motor has the band-type brake device that brakes when the outage, and when the outage, the band-type brake device dies servo motor lock, can prevent that equipment from dropping, guarantees equipment and operating personnel's security to can prevent that external force or other factors from influencing initial position, causing calculation error. The specific structure and the installation mode of the band-type brake device are the existing mature technology. Preferably, each servo motor uses an absolute value type encoder, the encoder position can be kept recorded for a long time when the system is powered off and powered off, initialization is performed when the system is powered on and powered on, and the encoder position is read and used as a reference position calculated by the system, so that the accuracy of controlling the action of the incident angle adjusting device 1 is improved.
In this embodiment, the cantilever 102 is welded to the second slide carriage 105 by using a Q345 low-carbon steel seamless steel tube, and has high structural strength, high bearing capacity, and difficulty in deformation, thereby ensuring the test accuracy. The incident angle adjusting apparatus 1 is further provided with an anti-collision protection switch that limits the sliding range of the first slider 104 and the second slider 105 to ensure safety.
In this embodiment, the reflectivity testing system is further provided with a heating device 3 for heating the sample plate to be tested, so as to test the high-temperature reflectivity of the wave-absorbing material. As shown in fig. 5 and 6, the heating apparatus 3 includes a robot 32 and a heating furnace 31 having a furnace chamber 311, the furnace chamber 311 having a furnace opening 312 opened downward, the robot 32 being connected to the heating furnace 31 and driving the heating furnace 31 to move so as to extend the workpiece retainer 2 into the furnace opening 312 or to withdraw the workpiece retainer 2 away from the furnace opening 312. The heating device 3 adopts the manipulator 32 to drive the heating furnace 31 to move, and can enable the heating furnace 31 to move to the position where the workpiece bearing platform 2 extends into the furnace mouth 312 so as to heat the sample plate to be tested on the workpiece bearing platform 2, or enable the heating furnace 31 to move to the position far away from the workpiece bearing platform 2 so as to test the reflectivity of the heated sample plate to be tested. Because the workpiece bearing platform 2 extends into the hearth 311 from the furnace mouth 312 from bottom to top, the sample plate to be tested placed on the workpiece bearing platform 2 directly extends into the hearth 311 for heating, the heating efficiency and the heating uniformity of the sample plate to be tested are good, the temperature uniformity of the sample plate to be tested can be effectively ensured, particularly the temperature uniformity of the upper surface (incidence surface) of the sample plate to be tested, and the problems of inaccurate test, deformation of the sample plate to be tested and the like caused by uneven temperature can be avoided; meanwhile, the heated surface of the sample plate to be tested is the upper surface on which electromagnetic waves are incident during testing, and when the wave-absorbing material with the heat insulation function is tested, the wave-absorbing performance of the wave-absorbing material in a high-temperature environment can be accurately represented, and the testing precision of the wave-absorbing material with the heat insulation function can be improved; moreover, after the heating device 3 is adopted, the size of the workpiece bearing platform 2 can be consistent with that of a sample plate to be tested on the premise of ensuring uniform heating and accurate heating surface, the test error caused by the influence of overlarge size of the workpiece bearing platform 2 on the test is avoided, and the test precision can be further improved. In addition, the heating device 3 can also be automatically operated, so that the working efficiency and the safety can be improved.
In this embodiment, the bottom surface of the furnace 311 is a horizontal surface, the opening size of the furnace opening 312 is smaller than the bottom surface size of the furnace 311, and the furnace opening 312 is located at the middle position of the bottom surface of the furnace 311, so that the temperature uniformity in the furnace 311 can be improved, the heating uniformity of the sample plate to be measured in the furnace 311 can be improved, and the temperature uniformity of the heated sample plate to be measured can be improved.
In this embodiment, the wall of the heating furnace 31 includes a thermal insulation layer 313, a thermal insulation layer 314 and a shell 315 arranged from inside to outside, and the thermal insulation layer 313 is made of a ceramic composite skin and aerogel, so that the problems of powder falling, slag falling and short service life in the heat exchange process can be avoided. The heat preservation layer 314 is composed of a fiber heat preservation plate and fiber heat preservation cotton, and the heat preservation effect is good. The housing 315 is made of stainless steel.
In this embodiment, the heating furnace 31 includes a furnace shell enclosing into a furnace 311, a plurality of heating rods 316 which are parallel to each other and are uniformly spaced are installed on the upper portion and the peripheral side portion of the furnace 311, the plurality of heating rods 316 on the upper portion of the furnace 311 and the plurality of heating rods 316 on the peripheral side portion of the furnace 311 are parallel to each other and are uniformly spaced, the uniformity of the temperature in the furnace 311 can be improved, the uniformity of the temperature after the sample plate to be detected is heated is further improved, the power of each heating rod 316 can be adjusted, and the control of the local temperature in the furnace 311 is realized. Preferably, the heating rod 316 on the upper portion of the hearth 311 is fixedly mounted on the top wall of the hearth 311 through a hook, and the heating rod 316 is arranged in a suspended manner, so that the uniformity of the temperature in the hearth 311 can be further improved.
In this embodiment, the furnace 311 is provided with a plurality of temperature sensors 317 for the temperature in the furnace 311, and the plurality of temperature sensors 317 are uniformly arranged right above the furnace opening 312. Temperature sensor 317 can real-time detection furnace 311 internal temperature, be convenient for realize the accurate control to temperature in furnace 311 with the controller cooperation to a plurality of temperature sensor 317 evenly arrange directly over fire door 312, when heating the model that awaits measuring, a plurality of temperature sensor 317 just in time detect the temperature in each region in the model top that awaits measuring, are convenient for know the temperature of each department of the model upper surface that awaits measuring in real time.
In this embodiment, the heating furnace 31 is suspended at the driving end of the manipulator 32, and the furnace mouth 312 is kept vertically downward during the movement of the heating furnace 31, so that the workpiece support platform 2 can accurately and stably extend into the furnace mouth 312 from bottom to top when the manipulator 32 drives the heating furnace 31 to move. Preferably, a hanger is arranged on the heating furnace 31, and the hanger is detachably connected with the manipulator 32, so that the heating furnace 31 is convenient to assemble, disassemble and maintain.
In this embodiment, the horizontal cross section of the furnace mouth 312 is the same as the horizontal cross section of the workpiece support platform 2 in shape and size, and the furnace mouth 312 is just closed when the workpiece support platform 2 extends into the furnace mouth 312, so that the heating uniformity can be prevented from being affected by a gap between the workpiece support platform 2 and the furnace mouth 312, the heat loss can be avoided, and the purpose of saving energy consumption can be achieved.
In this embodiment, four-axis pile up neatly machinery hand that manipulator 32 adopted the market to purchase has advantages such as location is accurate, the removal precision is high, the translation rate is fast, stability is good, and it extensively is used for various industrial occasion material handling, pile up neatly etc. In other embodiments, the manipulator 32 may also adopt a crane structure for existing workshops, or adopt the vertical plane automatic displacement assembly of the incident angle adjusting device 1 of this embodiment, as long as the manipulator can drive the heating furnace 31 to move in a vertical plane or in a three-dimensional space.
A method for testing the reflectivity of a wave-absorbing material by adopting the reflectivity testing system of the embodiment comprises the following steps:
(A) placing a sample plate to be detected on a workpiece bearing platform 2, driving a heating furnace 31 to move to the position above the workpiece bearing platform 2 through a manipulator 32, then driving the heating furnace 31 to move downwards, enabling the workpiece bearing platform 2 to extend into a furnace mouth 312 of the heating furnace 31, and enabling the sample plate to be detected on the workpiece bearing platform 2 to be located in a furnace chamber 311;
(B) starting a heating furnace 31 to heat the sample plate to be detected until the temperature of the sample plate to be detected reaches a set temperature, and preserving the heat for at least 15 minutes;
(C) the manipulator 32 drives the heating furnace 31 to move upwards, so that the workpiece bearing platform 2 is withdrawn from the furnace mouth 312, and then the heating furnace 31 is driven to move to a position far away from the workpiece bearing platform 2, so that the heating furnace 31 does not interfere with the reflectivity test;
(D) the correlation antenna 4 is driven to do vertical and horizontal motion in a vertical plane through the incident angle adjusting device 1, so that the correlation antenna 4 moves to a preset test position along a preset arc-shaped track with the workpiece bearing platform 2 as a circle center, meanwhile, the correlation antenna 4 is driven to rotate around a horizontal axis through the rotary driving piece 103, so that the correlation antenna 4 points to the workpiece bearing platform 2, and the correlation antenna 4 is started to perform reflectivity test.
The testing method not only has the advantages of the reflectivity testing system, but also has simple steps and simple and convenient operation.
In the above-described test method, preferably, the bottom surface of the furnace 311 and the upper surface of the workpiece support platform 2 are both horizontal surfaces, and in the step (a), the depth of the workpiece support platform 2 extending into the furnace mouth 312 of the heating furnace 31 is: the bottom surface of the hearth 311 is flush with the upper surface of the workpiece support table 2. Because the workpiece bearing platform 2 does not extend into the hearth 311, the influence of the low-temperature workpiece bearing platform 2 on the temperature uniformity in the hearth 311 can be greatly weakened, so that the heated temperature uniformity of the sample plate to be detected is improved, the heat absorption of the workpiece bearing platform 2 can be reduced, the heating efficiency of the sample plate to be detected is improved, the size of the hearth 311 is favorably reduced, and the purposes of improving the structure compactness and reducing the cost are achieved.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-described embodiments. Modifications and variations that may occur to those skilled in the art without departing from the spirit and scope of the invention are to be considered as within the scope of the invention.
Claims (8)
1. The utility model provides a reflectivity test system of absorbing material, includes incident angle adjusting device (1), work piece cushion cap (2) and correlation antenna (4), its characterized in that: the incident angle adjusting device (1) comprises a support (101), a cantilever (102) and a rotary driving part (103), wherein the cantilever (102) is installed on the support (101) through a vertical surface automatic displacement assembly and can be driven by the vertical surface automatic displacement assembly to move in a vertical plane, the rotary driving part (103) is installed on the cantilever (102), and the correlation antenna (4) is connected with a driving end of the rotary driving part (103) and can be driven by the rotary driving part (103) to rotate around a horizontal axis;
the vertical automatic displacement assembly comprises a first sliding seat (104) and a second sliding seat (105), the first sliding seat (104) is arranged on the support (101) in a sliding mode, the second sliding seat (105) is arranged on the first sliding seat (104) in a sliding mode, the sliding directions of the first sliding seat (104) and the second sliding seat (105) are parallel to a vertical plane, the sliding direction of the first sliding seat (104) is perpendicular to the sliding direction of the second sliding seat (105), the cantilever (102) is installed on the second sliding seat (105), and the vertical automatic displacement assembly further comprises a first sliding driving mechanism (106) and a second sliding driving mechanism (107), the first sliding seat (104) is driven to slide, and the second sliding seat (105) is driven to slide;
the reflectivity test system is further provided with a heating device (3), the heating device (3) comprises a manipulator (32) and a heating furnace (31) with a hearth (311), the hearth (311) is provided with a downward opening furnace mouth (312), the manipulator (32) is connected with the heating furnace (31) and can drive the heating furnace (31) to move so that a workpiece bearing platform (2) extends into the furnace mouth (312) or the workpiece bearing platform (2) is withdrawn and kept away from the furnace mouth (312).
2. A reflectivity testing system according to claim 1, wherein: the first sliding driving mechanism (106) and the second sliding driving mechanism (107) are gear rack mechanisms driven by a servo motor or ball screw mechanisms driven by the servo motor.
3. A reflectivity testing system according to claim 2, wherein: the servo motor is provided with a brake device for braking when power is off.
4. A reflectivity testing system according to claim 1, wherein: the bottom surface of the hearth (311) is a horizontal plane, the opening size of the fire hole (312) is smaller than that of the bottom surface of the hearth (311), and the fire hole (312) is positioned in the middle of the bottom surface of the hearth (311); the heating furnace (31) is hung at the driving end of the manipulator (32) and the furnace mouth (312) is kept vertically downward in the moving process of the heating furnace (31).
5. A reflectivity testing system according to claim 1, wherein: the wall of the heating furnace (31) comprises a heat insulation layer (313), a heat insulation layer (314) and a shell (315), wherein the heat insulation layer (313) is arranged from inside to outside and is composed of a ceramic composite material skin and aerogel, and the heat insulation layer (314) is composed of a fiber heat insulation board and fiber heat insulation cotton.
6. A reflectivity testing system according to claim 1, wherein: the heating furnace (31) comprises a furnace shell which encloses the hearth (311), and a plurality of parallel heating rods (316) which are uniformly arranged at intervals are arranged on the upper part and the peripheral side part of the hearth (311); the furnace (311) is provided with a plurality of temperature sensors (317) used for detecting the temperature in the furnace (311), and the temperature sensors (317) are uniformly arranged right above the furnace opening (312).
7. A method for testing the reflectivity of a wave-absorbing material by using the reflectivity testing system of claim 1, which is characterized in that: the method comprises the following steps:
(A) placing a sample plate to be detected on a workpiece bearing platform (2), driving a heating furnace (31) to move to the upper part of the workpiece bearing platform (2) through a manipulator (32), then driving the heating furnace (31) to move downwards, enabling the workpiece bearing platform (2) to extend into a furnace mouth (312) of the heating furnace (31), and enabling the sample plate to be detected on the workpiece bearing platform (2) to be located in a furnace cavity (311);
(B) starting a heating furnace (31) to heat the sample plate to be detected until the temperature of the sample plate to be detected reaches a set temperature, and preserving the heat for at least 15 minutes;
(C) the heating furnace (31) is driven to move upwards by the manipulator (32), so that the workpiece bearing platform (2) is withdrawn from the furnace mouth (312), and then the heating furnace (31) is driven to move to a position far away from the workpiece bearing platform (2);
(D) the correlation antenna (4) is driven to do vertical and horizontal motion in a vertical plane through the incident angle adjusting device (1), so that the correlation antenna (4) moves to a preset testing position along a preset arc-shaped track with the workpiece bearing platform (2) as a circle center, and meanwhile, the correlation antenna (4) is driven to rotate around a horizontal axis through the rotary driving piece (103), so that the correlation antenna (4) points to the workpiece bearing platform (2), and the correlation antenna (4) is started to perform reflectivity testing.
8. The test method of claim 7, wherein: the bottom surface of the hearth (311) and the upper surface of the workpiece bearing platform (2) are horizontal surfaces, and in the step (A), the depth of the workpiece bearing platform (2) extending into a furnace mouth (312) of the heating furnace (31) is as follows: the bottom surface of the hearth (311) is flush with the upper surface of the workpiece bearing platform (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811623286.3A CN109507212B (en) | 2018-12-28 | 2018-12-28 | System and method for testing reflectivity of wave-absorbing material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811623286.3A CN109507212B (en) | 2018-12-28 | 2018-12-28 | System and method for testing reflectivity of wave-absorbing material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109507212A CN109507212A (en) | 2019-03-22 |
| CN109507212B true CN109507212B (en) | 2021-06-22 |
Family
ID=65756673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811623286.3A Active CN109507212B (en) | 2018-12-28 | 2018-12-28 | System and method for testing reflectivity of wave-absorbing material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109507212B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111272778B (en) * | 2020-03-09 | 2022-10-21 | 北京环境特性研究所 | Automatic switching type reflectivity test support and test method |
| CN111351806A (en) * | 2020-03-31 | 2020-06-30 | 成都飞机工业（集团）有限责任公司 | Variable-temperature reflectivity test seat device |
| CN112216952A (en) * | 2020-10-13 | 2021-01-12 | 南京英飞达自动化设备有限公司 | Arch frame device for detecting reflectivity of wave-absorbing material and detection method thereof |
| CN114136997A (en) * | 2021-12-01 | 2022-03-04 | 北京环境特性研究所 | Plate reflectivity test system |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2372261A1 (en) * | 2002-02-15 | 2003-08-15 | Paul Ouellette | System for measuring shrinkage behaviour and modulus change during solidification of a polymeric resin, and method therefor |
| CN101344495B (en) * | 2008-07-30 | 2010-09-15 | 电子科技大学 | Measuring apparatus for reflection index of wave suction material |
| CN102359970A (en) * | 2011-08-26 | 2012-02-22 | 邯郸金狮棉机有限公司 | Detection device and detection method of seed cotton foreign matter |
| CN203216867U (en) * | 2013-05-03 | 2013-09-25 | 长沙三瑞传感技术有限公司 | Reflectivity high temperature testing platform |
| CN205300227U (en) * | 2015-11-23 | 2016-06-08 | 江苏丰东热技术股份有限公司 | End of a year or month formula high temperature furnace |
| CN207540993U (en) * | 2017-08-14 | 2018-06-26 | 东莞天卫隐身技术有限公司 | A kind of test device of reflection index of wave suction material |
-
2018
- 2018-12-28 CN CN201811623286.3A patent/CN109507212B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109507212A (en) | 2019-03-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109507212B (en) | System and method for testing reflectivity of wave-absorbing material | |
| CN108414372B (en) | Steel structure automatic impact positioning monitoring test platform based on fiber bragg grating | |
| CN109799246B (en) | Workpiece bearing platform and heating device for testing reflectivity of wave-absorbing material | |
| CN207900586U (en) | A kind of precision bearing Horizontal assembling press | |
| CN204495669U (en) | High/low temperature end face frictional wear tester | |
| CN107300373A (en) | Complex-curved measurement apparatus based on six degree of freedom auxiliary robot | |
| CN109030269B (en) | Wide temperature controllable atmosphere in-situ ball disc friction and wear testing machine | |
| CN211877640U (en) | Tension-torsion testing machine for plug | |
| CN109708948B (en) | Heating device and heating method for testing reflectivity of wave-absorbing material | |
| CN212109915U (en) | High-precision non-contact type revolution surface profile measuring device | |
| CN114659923A (en) | Wear detection device based on cotton fiber friction material uses | |
| CN210180980U (en) | Ultrasonic excitation thermal wave imaging system and ultrasonic excitation thermal wave detection device | |
| CN113091690A (en) | Utensil is examined to quick inspection of casting part blank | |
| CN112557253A (en) | Color line fluidity detection device | |
| CN208051312U (en) | A kind of precision bearing Horizontal assembling press | |
| CN206524193U (en) | A kind of fuel assembly control rod pulls and pushes force checking device | |
| CN110819775A (en) | End quenching testing machine capable of measuring continuous temperature field and measuring method thereof | |
| CN113804333B (en) | High-temperature heat flow sensor dynamic performance calibration device | |
| CN211179260U (en) | Ball pressure testing device | |
| CN219775295U (en) | Nuclear fuel zirconium alloy cladding Cr coating nondestructive eddy current testing transmission device | |
| CN217818661U (en) | Accurate control type full-automatic thickness detection platform | |
| CN109470889B (en) | Speed measurement sensor detection device | |
| CN220062863U (en) | Flywheel centre bore on-line measuring device | |
| CN217304720U (en) | Height control device of falling hammer test system | |
| CN219532699U (en) | Variable-temperature fatigue test device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |