CN108519401A - Inhibiting speckle image joggling test device under 1200 DEG C of aerobic hot environments of one kind - Google Patents
Inhibiting speckle image joggling test device under 1200 DEG C of aerobic hot environments of one kind Download PDFInfo
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- CN108519401A CN108519401A CN201810255572.2A CN201810255572A CN108519401A CN 108519401 A CN108519401 A CN 108519401A CN 201810255572 A CN201810255572 A CN 201810255572A CN 108519401 A CN108519401 A CN 108519401A
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- G01N25/00—Investigating or analyzing materials by the use of thermal means
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- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
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Abstract
The invention discloses inhibit speckle image joggling test device, including lightweight refractory ceramics plate, orthogonal quartz lamp heating electrodes, optical transmission window, light ceramics thermal-insulated frame, speckle particle, treadmill test part, quartz glass box, heat-insulated light transmission passage, loophole, MOS cameras, band pass filter, camera lens and pattern process computer under a kind of 1200 DEG C of aerobic hot environments；Temperature rise in high temperature heat test, hot-air density reduce, and thermal current moves upwards, and top and the bottom atmospheric density difference makes air refraction generate unstable state variation in heating region, causes flating, and digital picture correlation analysis is caused to fail.In order to obtain the clear image of heated front surface deformation, the present invention, which integrates, uses multi-level Multi sectional space-closed and zone isolation measure, the shake for inhibiting hot-air in the effective transmission path of optical information obtains the clear speckle image of the heated front surface deformation of aerobic hot environment lower component and the whole field deformation of heating surface.
Description
Technical field
The present invention relates to inhibit speckle image joggling test device under a kind of 1200 DEG C of aerobic hot environments.Especially make
When carrying out high temperature deformation measurement with Non-contact optical methods, inhibit the shake of hot-air, obtain clearly hot face speckle image,
And then whole audience high temperature deformation data are obtained, provide important examination for the analysis of high-speed aircraft calorific intensity and security and Reliability Design
Test means of testing.
Background technology
High-speed aircraft is in atmosphere to generate serious Aerodynamic Heating with air severe friction when High Mach number flight
Phenomenon.Harsh pneumatic thermal environment makes aircraft outer surface temperature steeply rise, the mechanical characteristic hair of aircraft material and structure
Changing, thermal strain can cause aircraft component geometry to change, and the aerodynamic configuration even threat for influencing aircraft flies
Row safety.Accordingly, it is determined that stress of the high-speed aircraft component under Aerodynamic Heating environment and deformation are to the safe and reliable of aircraft
Property design have very important significance.
Strain measurement method under works surface high-temp environment has the way of contact and cordless.Contact measurement mode
Main representative be that foil gauge measures, there are many researchs and application under hot environment.Since foil gauge is difficult to bear
1000 DEG C or more of harsh hot environment, and a piece of foil gauge can only measure the strain of single-point one direction, be used for whole audience strain measurement
When it is complicated and difficult, strain sheet mode at present and be difficult to meet the very high whole audience strain measurement of temperature.Non-contact optical methods exist
There is advantage in terms of whole audience strain measurement.Digital Image Correlation Method based on speckle image is a kind of very effective whole audience change
Shape optical measuring technique, it has the features such as applied widely, measurement accuracy is higher, and testing equipment is simple and direct, and has been applied successfully
In high temperature strain measurement.Digital Image Correlation Method has become a kind of very important high temperature deformation survey in cordless
Amount technology.
Aerodynamic Heating appears in endoatmosphere, and due to test simulation difficulty, thermal extremes radiation heat test usually requires
Carried out in vacuum or enclosure space full of inert gas, but vacuum or inert gas environment with high-speed aircraft in an atmosphere
Aerobic hot environment when flight has very big difference, cannot obtain the variation of aircraft material or structure in aerobic hot environment
Situation.The aerobic high temperature thermal boundary state of component when in order to approach high-speed flight, heat test should simulate identical as flying condition
Endoatmosphere aerobic high thermal environment.
The problem that optical measurement will appear hot-air shake is carried out in aerobic high thermal environment, with the liter of test temperature
Height, the hot-air density inside experimental rig reduce, and thermal current moves upwards, and top and the bottom atmospheric density difference makes in heating region
It obtains air refraction and generates unstable state variation, cause the decline of acquisition image definition or generation deceptive information, even result in number
Image correlation analysis fails.To obtain the clear speckle image for front surface deformation of being heated under high-temperature oxidation environment, inhibit heat
The shake of air is the critical issue that must be solved.
In addition, high temperature caused by hypersonic aircraft Aerodynamic Heating appears in the aircraft such as antenna house, nacelle, cable hood
The outer surface of component.It, must since aircraft interior is equipped with the components such as electronic instrument, radar, warhead, control system and equipment
Efficient thermally protective materials must be used, and sluggish surface heat internally transmits to the maximum extent.High efficiency heat insulation material makes outside aircraft
Surface temperature and internal temperature difference are very big.Therefore in ground experiment, it is necessary to which simulation approximately has with Aerodynamic Heating state
The single side face heat test environment in hot face and huyashi-chuuka (cold chinese-style noodles) difference, and obtain the clear of the heated front surface deformation of high-temperature oxidation environment lower component
High-temperature speckle image and accordingly obtain heating surface whole field deformation.It is analyzed for the calorific intensity of hypersonic aircraft heating part
And security and Reliability Design provides experimental test means and technical support.
The present invention, which integrates, uses multi-level Multi sectional space-closed and zone isolation measure, and road is effectively transmitted in optical information
The shake for inhibiting hot-air in diameter, to obtain the clear optics of single side face heating, the deformation of aerobic hot environment lower component front surface
Speckle image and whole field deformation.Calorific intensity analysis for high-speed aircraft heating part under high-temperature oxidation environment and security reliability
Design provides important experimental test means.
Invention content
The technical problem to be solved in the present invention is：In aerobic hot environment high temperature is carried out based on Non-contact optical methods
When deformation measurement, hot-air in light path is inhibited to shake influence to image, obtains clearly 1200 DEG C of hot face speckle images and complete
Field high temperature deformation.
The present invention solve above-mentioned technical problem the technical solution adopted is that：Inhibit to dissipate under 1200 DEG C of aerobic hot environments of one kind
Spot flating experimental rig, including：Lightweight refractory ceramics plate, orthogonal quartz lamp heating electrodes, optical transmission window, light ceramics every
Hot frame, speckle particle, treadmill test part, quartz glass box, heat-insulated light transmission passage, loophole, MOS cameras, band pass filter,
Camera lens and pattern process computer；Lightweight refractory ceramics plate is mounted on the forward and backward two sides of orthogonal quartz lamp heating electrodes, Lightweight ceramic
Porcelain thermal-insulated frame is sleeved on the surrounding of orthogonal quartz lamp heating electrodes, and heating region is made to form an enclosure space, limits hot-air
Flowing；Orthogonal quartz lamp heating electrodes send out infrared radiating light, and the treadmill test part that speckle particle is formed with to surface adds
Heat；Transparent quartz glass box is sleeved on the surrounding of treadmill test part, and further compressing treadmill test part surface, nearby heat is empty
The flow region of gas；Heat-insulated light transmission passage be mounted on optical transmission window and CMOS cameras in the middle part of orthogonal quartz lamp heating electrodes it
Between, and close to orthogonal quartz lamp heating electrodes side；After treadmill test part is heated, the speckle particle on surface is with tablet
The deformation of testpieces changes its relative position；After movement being generated under the initial position signal and high temperature of speckle particle at normal temperatures
Position signal will transmit through the optical transmission window in the middle part of orthogonal quartz lamp heating electrodes and reach the CMOS phases of band pass filter are installed
The camera lens of machine front stores and processs the change in location of speckle particle by pattern process computer；It is comprehensive to use gently
Matter refractory ceramics plate, light ceramics thermal-insulated frame, quartz glass box, the heat-insulated light transmission passage with loophole form multi-level more
Section space-closed and zone isolation measure effectively inhibit the shake of hot-air in optical information transmission path, obtain high temperature
The clear speckle image of treadmill test part front surface high temperature deformation and whole audience displacement under oxidation environment.
Wherein, the outer boundary size of quartz glass box is identical as treadmill test part size, by the quartz glass plate of 5mm thickness
It is made；The light transmission of quartz glass box is excellent, after treadmill test part surface is set with quartz glass box, that is, limits tablet
The hot-air of testpieces heated surface area flows；Nor affect on heating shape of the infra-red radiation light to treadmill test part surface
State.
Wherein, the quartz glass plate for 1700 DEG C being up to using fusing point makes quartz glass box, can be at 1200 DEG C
High thermal environment under safely and reliably work.
Wherein, the outer wall of the heat-insulated light transmission passage of rectangle is welded by the Ni-based stainless steel plate of high temperature resistant of 1mm thickness, outer boundary
Size is 70mm × 70mm × 150mm.
Wherein, the centre of heat-insulated light transmission passage has an a diameter of 3cm to run through loophole, by the quartz that thickness is 1mm
Glass tube is made；The variation of treadmill test part surface high-temp speckle image is recorded through elongated loophole observable for CMOS cameras
Situation.
Wherein, between the stainless steel plate outer wall and quartz glass loophole of heat-insulated light transmission passage filled with high-temperature flexible every
Hot material so that the temperature in loophole does not occur quickly changing in hot test, prevents high-temperature hot air from generating shake.
Wherein, two layers of quartz lamp heating electrodes is mutually perpendicular to install, and removes a small number of quartz lamp heating tubes at middle part, makes bilayer
The rectangular optical transmission window that a 30mm × 30mm is formed in the middle part of quartz lamp heating electrodes, collects so that CMOS cameras can be observed
The high temperature deformation information of treadmill test part heating surface.
Wherein, orthogonal quartz lamp heating electrodes generate up to 1200 DEG C of aerobic hot environment, with high-speed aircraft big
Aerobic thermal environment in gas when flight is consistent.
Wherein, orthogonal quartz lamp heating electrodes to treadmill test part heating surface carry out single side face heating, can simulate with pneumatically
Heated condition approximately has the single side face heating environment in hot face and huyashi-chuuka (cold chinese-style noodles) difference.
The principle of the present invention is：Inhibit speckle image joggling test device, packet under 1200 DEG C of aerobic hot environments of one kind
It includes：Lightweight refractory ceramics plate, orthogonal quartz lamp heating electrodes, optical transmission window, light ceramics thermal-insulated frame, speckle particle, tablet examination
Part, quartz glass box, heat-insulated light transmission passage, loophole, MOS cameras, band pass filter, camera lens and image procossing is tested to calculate
Machine；Lightweight refractory ceramics plate is mounted on former and later two sides of orthogonal quartz lamp heating electrodes, while by light ceramics thermal-insulated frame
It is sleeved on the surrounding of orthogonal quartz lamp heating electrodes, heating region is made to form an enclosure space, it is flowable to reduce hot-air
Region.Quartz glass box is sleeved on the surrounding of treadmill test part, makes the hot-air flow region near treadmill test part surface
It further reduces.Heat-insulated light transmission passage is mounted on the optical transmission window in the middle part of orthogonal quartz lamp heating electrodes and between CMOS camera,
And close to orthogonal quartz lamp heating electrodes side.When orthogonal quartz lamp heating electrodes generation infrared radiating light, surface is formed with scattered
The treadmill test part of spot particle is heated.When, the speckle particle on treadmill test part surface changes with the deformation of treadmill test part
Become its relative position.The position signal after movement is generated under initial position signal and high temperature under its room temperature will transmit through orthogonal stone
The optical transmission window at 2 middle part of English lamp heating electrodes reaches the camera lens for the CMOS front of camera for being equipped with band pass filter 11, by image
Processing computer stores and processs signal, obtains the whole audience displacement information on treadmill test part surface.Since hot-air is trembled
The dynamic decisive region for causing image definition to reduce is the small viewfinder area and CMOS cameras of the heated front surface of treadmill test part
Between cylindrical space.
To overcome hot-air between CMOS cameras and treadmill test part front surface image acquisition region to shake to picture quality
Influence, the major measure that the present invention takes is summarized as follows：1. using heat-insulated outside two blocks of lightweight refractory ceramics plates and light ceramics
Frame closes the outer boundary of heating region, completely cuts off the flowing of inside and outside hot and cold air, and compressed gas flow space.2.
Transparent quartz glass box is installed, further substantially compression treadmill test part is heated at the heating surface outer boundary of treadmill test part
The flow region of hot-air in face, and transparent quartz glass box does not interfere with infra-red radiation light to treadmill test part surface
Heating.3. the diameter very little of the loophole in heat-insulated light transmission passage makes light transmission by increasing heat-barrier material outside loophole
Hole internal temperature does not occur quickly changing in hot test, avoids the shake of air in loophole in experiment.It is above-mentioned to arrange
The shake for significantly limiting hot-air in effective viewfinder area between CMOS cameras and treadmill test part is applied, such as Fig. 2 is can get
Shown in clearly treadmill test part surface-displacement under high-temperature speckle image and 1200 DEG C of aerobic hot environments shown in Fig. 3
Information.
Compared with the prior art, the invention has the advantages that：
(1) for the clear speckle image of the heated front surface deformation of acquisition in 1200 DEG C of aerobic hot environments, it is necessary to gram
Take the problem that hot-air is shaken under hot environment.Someone brushes heated body surface it has been suggested that crossing using flowing gas, makes to be heated
The air in portion is more uniform in front, reduces influence of the hot-air shake to speckle image quality.But temperature environment in this experiment
Up to 1200 DEG C, if brushing heated body surface using low-temperature airflow, not only it is difficult to generate 1200 DEG C of hot environment, and tablet
Testpieces surface temperature and speckle image all can become more unstable because gas flows.Therefore the present invention shakes for hot-air
The decisive region for causing image definition to reduce, it is comprehensive to use multi-level space-closed and zone isolation measure, effectively inhibit
The hot-air in crucial effect region is shaken, and the clearly high-temperature speckle image on treadmill test part surface as shown in Figure 2 is obtained.
(2) it is influenced caused by image definition in order to avoid the shake of hot-air when hot test, a kind of existing technology
Testpieces is placed in vacuum environment, because there is no gas in vacuum, the problem of also just shake without gas.But vacuum ring
Border is different from aerobic environment of the high-speed aircraft in air when flight, cannot obtain variation feelings of the material in aerobic environment
Condition.And the heat test in the present invention can carry out in aerobic hot environment, can real simulation high-speed aircraft endoatmosphere fly
Thermal boundary condition when row.
(3) present invention is socketed in using transparent high temperature resistant quartz glass box at the outer boundary of treadmill test part, that is, is limited
The flowing for having made treadmill test part surface hot-air, will not influence the infrared radiation heating on treadmill test part surface.
(4) present invention carries out single side face heating using orthogonal quartz lamp heating electrodes to treadmill test part heating surface, can mould
The quasi- single side face heating environment with hot face and huyashi-chuuka (cold chinese-style noodles) difference to match with Aerodynamic Heating state.
(5) apparatus of the present invention are simple for structure, easy for installation, are that the high temperature hot strength of the high-speed aircrafts such as guided missile is checked and pacified
Full protection design provides reliable foundation.
Description of the drawings
Fig. 1 is the structural representation for inhibiting speckle image joggling test device under a kind of 1200 DEG C of aerobic hot environments of the present invention
Figure；
Fig. 2 is the speckle image on treadmill test part surface under 1200 DEG C of hot environments；
Fig. 3 is the displacement field on treadmill test part surface under 1200 DEG C of hot environments.
Wherein, 1 is lightweight refractory ceramics plate, and 2 be orthogonal quartz lamp heating electrodes, and 3 be optical transmission window, and 4 be light ceramics
Thermal-insulated frame, 5 be speckle particle, and 6 be treadmill test part, and 7 be quartz glass box, and 8 be heat-insulated light transmission passage, and 9 be loophole, 10
It is band pass filter for MOS cameras, 11,12 be camera lens, and 13 be pattern process computer.
Specific implementation mode
Below in conjunction with the accompanying drawings and specific implementation mode further illustrates the present invention.
As shown in Figure 1, inhibiting speckle image joggling test device under the present invention 1200 DEG C of aerobic hot environments of one kind, by light
Matter refractory ceramics plate 1, orthogonal quartz lamp heating electrodes 2, optical transmission window 3, light ceramics thermal-insulated frame 4, speckle particle 5, tablet examination
Test part 6, quartz glass box 7, heat-insulated light transmission passage 8, loophole 9, MOS cameras 10, band pass filter 11, camera lens 12 and image
Computer 13 is handled to form.Lightweight refractory ceramics plate 1 is mounted on former and later two sides of orthogonal quartz lamp heating electrodes 2, lightweight
Ceramic insulation frame 4 is sleeved on the surrounding of orthogonal quartz lamp heating electrodes 2, so that heating region is formed an enclosure space, limits
The flowing of hot-air in domain.Orthogonal quartz lamp heating electrodes 2 generate infrared radiating light, and the tablet of speckle particle 5 is formed with to surface
Testpieces 6 is heated.Quartz glass box 7 is sleeved on the surrounding of treadmill test part 6, makes near 6 surface of treadmill test part
Hot-air flow region further reduces.Heat-insulated light transmission passage 8 is mounted on the optical transmission window at 2 middle part of orthogonal quartz lamp heating electrodes
Between 3 and CMOS cameras 10, and close to orthogonal 2 side of quartz lamp heating electrodes.After treadmill test part 6 is heated, surface
Speckle particle 5 change its relative position with the deformation of treadmill test part 6.The initial bit confidence of speckle particle 5 at normal temperatures
Number and high temperature under generate it is mobile after position signal will transmit through the optical transmission window 3 at 2 middle part of orthogonal quartz lamp heating electrodes and reach
The camera lens 12 of 10 front of CMOS cameras of band pass filter 11 is installed, by pattern process computer 13 to speckle particle 5
Change in location is stored and processed, and the whole audience displacement information on 6 surface of treadmill test part is can get.
In hot test, with the raising of orthogonal 2 temperature of quartz lamp heating electrodes, around by the atmospheric density of heating region
It reduces, it may appear that the thermal current moved upwards, it is non-steady that heating region top and the bottom atmospheric density difference so that air refraction generates
State changes, and acquisition image definition is caused to decline or generate deceptive information, even results in digital picture correlation analysis failure.Due to
The decisive region that hot-air shake causes image definition to reduce is：The be heated image of front surface of treadmill test part 6 is found a view area
Small-diameter circular cylindricality space between domain and CMOS cameras 10.To overcome CMOS cameras 10 and 6 front surface image of treadmill test part
Hot-air effect of jitter picture quality between pickup area, the present invention mainly take following measures to reduce the shadow that hot-air is shaken
It rings：1. using two blocks of lightweight refractory ceramics plates 1 and the outer thermal-insulated frame 4 of light ceramics, heating region is made to form a smaller closing
Space, completely cuts off the heat exchange of inside and outside hot and cold air, while also limiting the big of the flowable space of hot-air in heating region
It is small.2. installing transparent quartz glass box 7 at the heating surface outer boundary of treadmill test part 6, treadmill test is further compressed
The flowable region of the hot-air of 6 heating surface of part.3. heat-insulated light transmission passage 8 is mounted on orthogonal quartz lamp heating electrodes 2 and CMOS
Between camera 10, one end is tightly attached at the rectangular optical transmission window 3 of orthogonal quartz lamp heating electrodes 2.It is saturating in heat-insulated light transmission passage 8
The diameter very little of unthreaded hole 9, and have provision for thermal insulation, avoid the shake of air in heat test.
The outer boundary size of quartz glass box 7 is consistent with the size of treadmill test part 6, by the quartz glass plate of 5mm thickness
It is made.Since quartz glass box 7 is good light penetrating object, the suit quartz glass box 7 on 6 surface of treadmill test part,
Not only limit the hot-air flowing of 6 heated surface area of treadmill test part.Infra-red radiation light will not be influenced to try tablet
Test the heated condition on 6 surface of part.In addition, the fusing point of quartz glass is up to 1700 DEG C, it can be in 1200 DEG C of height of this test requirements document
It safely and reliably works under warm environment.
The outer wall of the heat-insulated light transmission passage of rectangle 8 is welded by the Ni-based stainless steel plate of high temperature resistant of 1mm thickness, outer boundary size
For 70mm × 70mm × 150mm, it is only that 3cm runs through loophole 9 that, which there is a diameter in the centre of heat-insulated light transmission passage 8, by thickness
It is made of the quartz glass thin-wall tube of 1mm, CMOS cameras 10 are through elongated 9 observable of loophole record treadmill test part, 6 surface
The situation of change of speckle image.Resistance to height is filled between the stainless steel plate outer wall and quartz glass loophole 9 of heat-insulated light transmission passage 8
Warm flexible insulant material so that 9 internal temperature of loophole does not occur quickly changing in hot test, prevents hot-air from shaking
Influence to Image Acquisition.
Above-mentioned multiple measure significantly limits hot empty in effective viewfinder area between CMOS cameras 10 and treadmill test part 6
The movement and shake of gas obtain clearly 1200 DEG C of high-temperature speckle images as shown in Figure 2.By to high-temperature speckle image
Analysis has obtained 6 surface-displacement information of treadmill test part under 1200 DEG C of hot environments as shown in Figure 3.
Orthogonal quartz lamp heating electrodes 2 in the present invention carry out single side face heating to 6 heating surface of treadmill test part, can simulate
The single side face heating environment with hot face and huyashi-chuuka (cold chinese-style noodles) difference to match with Aerodynamic Heating state.
Apparatus of the present invention are simple for structure, easy to use, can obtain clearly high under the aerobic hot environment for being difficult to measure
Warm speckle image and whole audience displacement information, the high temperature hot strength for high-speed aircraft is checked and safe design provides reliable experiment
Foundation.
Non-elaborated part of the present invention belongs to techniques well known.
Claims (9)
1. inhibiting speckle image joggling test device under a kind of 1200 DEG C of aerobic hot environments, which is characterized in that including：Lightweight is high
Warm ceramic wafer (1), orthogonal quartz lamp heating electrodes (2), optical transmission window (3), light ceramics thermal-insulated frame (4), speckle particle (5),
Treadmill test part (6), quartz glass box (7), heat-insulated light transmission passage (8), loophole (9), MOS cameras (10), bandpass filtering
Piece (11), camera lens (12) and pattern process computer (13)；Lightweight refractory ceramics plate (1) is mounted on orthogonal quartz lamp heating electrodes
(2) forward and backward two sides, light ceramics thermal-insulated frame (4) are sleeved on the surrounding of orthogonal quartz lamp heating electrodes (2), make heating region
An enclosure space is formed, the flowing of hot-air is limited；Orthogonal quartz lamp heating electrodes (2) send out infrared radiating light, to surface
The treadmill test part (6) for being formed with speckle particle (5) is heated；Transparent quartz glass box (7) is sleeved on treadmill test part
(6) surrounding further compresses the flow region of hot-air near treadmill test part (6) surface；Heat-insulated light transmission passage (8) installation
Between optical transmission window (3) and CMOS cameras (9) in the middle part of orthogonal quartz lamp heating electrodes (2), and add close to orthogonal quartz lamp
Hot array (2) side；After treadmill test part (6) is heated, the speckle particle (5) on surface is with treadmill test part (6)
Deformation changes its relative position；The position after movement is generated under the initial position signal and high temperature of speckle particle (5) at normal temperatures
Confidence number will transmit through the arrival of the optical transmission window (3) in the middle part of orthogonal quartz lamp heating electrodes (2) and be equipped with band pass filter (11)
The camera lens (12) of CMOS cameras (10) front carries out the change in location of speckle particle (5) by pattern process computer (13)
Storage and processing；It is comprehensive to use lightweight refractory ceramics plate (1), light ceramics thermal-insulated frame (4), quartz glass box (7), carry thoroughly
The heat-insulated light transmission passage (8) of unthreaded hole (9) forms multi-level Multi sectional space-closed and zone isolation measure, is transmitted in optical information
Effectively inhibit the shake of hot-air in path, obtains the clear of treadmill test part (6) front surface high temperature deformation under high-temperature oxidation environment
Clear speckle image and whole audience displacement.
2. inhibiting speckle image joggling test device, feature under 1200 DEG C of aerobic hot environments according to claim 1
It is：The outer boundary size of quartz glass box (7) is identical as treadmill test part (6) size, by the quartz glass plate system of 5mm thickness
At；The light transmission of quartz glass box (7) is excellent, after treadmill test part (6) surface is set with quartz glass box (7), that is, limits
The hot-air flowing of treadmill test part (6) heated surface area is made；Infra-red radiation light is nor affected on to treadmill test part (6)
The heated condition on surface.
3. inhibiting speckle image joggling test device, feature under 1200 DEG C of aerobic hot environments according to claim 1
It is：It is up to 1700 DEG C of quartz glass plate using fusing point and makes quartz glass box (7), it can be in 1200 DEG C of high temperature
It safely and reliably works under thermal environment.
4. inhibiting speckle image joggling test device, feature under 1200 DEG C of aerobic hot environments according to claim 1
It is：The outer wall of the heat-insulated light transmission passage of rectangle (8) is welded by the Ni-based stainless steel plate of high temperature resistant of 1mm thickness, outer boundary size
For 70mm × 70mm × 150mm.
5. inhibiting speckle image joggling test device, feature under 1200 DEG C of aerobic hot environments according to claim 1
It is：The centre of heat-insulated light transmission passage (8) has an a diameter of 3cm to run through loophole (9), by the quartzy glass that thickness is 1mm
Glass pipe is made；Treadmill test part (6) surface high-temp speckle pattern is recorded through elongated loophole (9) observable in CMOS cameras (10)
The situation of change of picture.
6. inhibiting speckle image joggling test device, feature under 1200 DEG C of aerobic hot environments according to claim 1
It is：It is heat-insulated filled with high-temperature flexible between the stainless steel plate outer wall and quartz glass loophole (9) of heat-insulated light transmission passage (8)
Material so that the temperature in loophole (9) does not occur quickly changing in hot test, prevents high-temperature hot air generation from trembling
It is dynamic.
7. inhibiting speckle image joggling test device, feature under 1200 DEG C of aerobic hot environments according to claim 1
It is：Two layers of quartz lamp heating electrodes is mutually perpendicular to install, and removes a small number of quartz lamp heating tubes at middle part, the double-deck quartz lamp is made to add
The rectangular optical transmission window (3) that a 30mm × 30mm is formed in the middle part of hot array (1), so that CMOS cameras (10) can observe acquisition
To the high temperature deformation information of treadmill test part (6) heating surface.
8. inhibiting speckle image joggling test device, feature under 1200 DEG C of aerobic hot environments according to claim 1
It is：Orthogonal quartz lamp heating electrodes (2) generate up to 1200 DEG C of aerobic hot environment, fly in an atmosphere with high-speed aircraft
Aerobic thermal environment when row is consistent.
9. inhibiting speckle image joggling test device, feature under 1200 DEG C of aerobic hot environments according to claim 1
It is：Orthogonal quartz lamp heating electrodes (2) carry out single side face heating to treadmill test part (6) heating surface, can simulate and pneumatically add
Warm status approximately has the single side face heating environment in hot face and huyashi-chuuka (cold chinese-style noodles) difference.
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| CN111912606A (en) * | 2020-07-09 | 2020-11-10 | 河海大学 | Camera object distance calibration method based on optical refraction |
| CN112393973A (en) * | 2020-12-17 | 2021-02-23 | 中国航天空气动力技术研究院 | High-speed aircraft heat intensity test image monitoring device |
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