CN112611639A - Be used for thin film prestressing force loading and irradiation test device - Google Patents
Be used for thin film prestressing force loading and irradiation test device Download PDFInfo
- Publication number
- CN112611639A CN112611639A CN202011617076.0A CN202011617076A CN112611639A CN 112611639 A CN112611639 A CN 112611639A CN 202011617076 A CN202011617076 A CN 202011617076A CN 112611639 A CN112611639 A CN 112611639A
- Authority
- CN
- China
- Prior art keywords
- anvil
- frame
- supporting block
- irradiation
- film
- 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.)
- Pending
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 24
- 239000010409 thin film Substances 0.000 title claims description 17
- 239000000463 material Substances 0.000 claims abstract description 33
- 239000010408 film Substances 0.000 claims description 39
- 239000012528 membrane Substances 0.000 claims description 3
- 230000003139 buffering effect Effects 0.000 claims description 2
- 238000004146 energy storage Methods 0.000 claims description 2
- 230000008859 change Effects 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 5
- 239000011825 aerospace material Substances 0.000 abstract description 3
- 230000002045 lasting effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 239000002245 particle Substances 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Images
Classifications
-
- 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
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/006—Crack, flaws, fracture or rupture
- G01N2203/0067—Fracture or rupture
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/0236—Other environments
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention relates to the field of aerospace materials, in particular to a device for testing film prestress loading and irradiation; the device comprises a frame, a supporting block, an anvil and a pressure gauge; the supporting block, the anvil and the pressure gauge can move up and down in the frame; the film material to be measured is fixed on the frame by the pressing plate, and the position of the anvil inside the frame can be changed by adjusting the supporting screw, so that the magnitude of external force applied by the anvil can be adjusted; the invention can provide acting forces with different sizes and different directions for the film by replacing different anvil stocks, and the external force applied on the film material to be detected is complex and changeable and can be detected; meanwhile, by utilizing the matching among the frame, the supporting block and the screw, the change of external force and the relaxation of the film material caused by the deviation of the anvil in the irradiation process are avoided; the invention has the advantages of small volume, simple operation, lasting and stable prestress and the like, and is particularly suitable for the irradiation test in a narrow irradiation space.
Description
Technical Field
The invention relates to the field of aerospace materials, in particular to a device for testing film prestress loading and irradiation.
Background
The aerospace film material needs to withstand strict examination of space environment, and the solar sail is taken as an example: the sail surface of the solar sail is made of ultra-thin and light film materials, and the sail surface materials are exposed in a space environment for a long time and are influenced by space particle radiation, so that the performance of the sail surface materials can be degraded, and the application of the sail surface materials in the space environment is influenced.
With the development of aerospace vehicles, the requirements for aerospace materials are more, higher and more updated, and in the research and development process of novel film materials, a series of research and tests are required to be carried out on the novel film materials, so that the interaction mechanism of space particles and films, the change of the performance of the film materials after the space particles are irradiated and the like are researched, and whether the requirements of space environments can be met or not is detected.
The performance test of the film material mainly comprises mechanical property, dielectric property, high and low temperature resistance, radiation resistance and the like, researchers do a great deal of research work on the performance change of the composite film material under the irradiation condition at present, the main test method is to give a certain dose of irradiation to the film material and then detect the performance change of the film material, and the method adopted by some researchers is irradiation and stress coupling treatment, namely, irradiation treatment is carried out on the film material under the condition of applying a tensile force in one direction to the film material, and then the change of the performance of the film material after irradiation is tested.
However, during deployment of an aerospace vehicle (e.g., a solar sail), the membrane material on the surface is not subjected to forces in only a single direction, and membranes in different positions may be subjected to forces of different magnitudes and different directions. The current testing method is to test the result of plane stretching, and the calculation formula is P ═ F/S, where F is the magnitude of the tensile force applied in the plane direction, S is the area of the cross section of the stretched film, and P is the tensile force applied per unit cross-sectional area. The existing prestress loading irradiation test device mainly has the following 3 limitations: (1) the stress loading device is large in size, and the internal space of the irradiation test device is limited, so that the test requirements cannot be met; (2) in the irradiation process, the film material is often deformed, the stress condition is changed, even the film material is in a loose and unstressed state, and the use scene of continuous stress cannot be well simulated; (3) the stress loading form is single, mainly takes tensile stress as the main part, and has a larger difference with the actual complex use scene.
Disclosure of Invention
The invention aims to overcome the defects of the traditional film material prestress irradiation coupling test device and provides a device for film prestress loading and irradiation test.
In order to achieve the purpose, the technical scheme provided by the invention is as follows: a device for testing the prestress loading and irradiation of a film is characterized by at least comprising:
the frame comprises an integral frame with a cubic structure, a pressing plate, a supporting screw at the bottom and a fixing screw, wherein the top of the frame is provided with a screw hole, the top screw is matched with the pressing plate, and the integral frame with the cubic structure is of a hollow structure;
the supporting block is arranged in the frame, the size of the supporting block is matched with that of the frame, and the supporting screw can be adjusted to move up and down in the frame without deflection;
the anvil comprises an anvil I, an anvil II and an anvil III, the anvil is arranged above the supporting block, and the cylindrical part of the anvil is matched with the placing hole of the supporting block and can move up and down in the frame without deviation; the force application part of the first anvil is spherical and can apply forces from different directions on the spherical surface to the film, the second anvil can provide tension in the horizontal direction after the film is fixed, the force application part of the third anvil is a semi-cylinder and can provide forces from the side direction of the cylinder, the three anvils provide external forces at different angles and in different directions, and the force can be adjusted by adjusting the supporting screws;
the pressure gauge is of a cylindrical structure and is arranged below the supporting block, a placing hole of the supporting block is matched with the pressure gauge, and the supporting screw is adjusted to enable the pressure gauge to move up and down in the frame;
furthermore, the cylindrical part of the anvil is matched with a placing hole arranged at the upper part of the supporting block, the cylindrical part of the anvil is provided with the placing hole, a cylindrical spiral spring is arranged in the placing hole of the supporting block, and the cylindrical spiral spring is simultaneously positioned in the placing hole of the supporting block and used as a buffering and energy storage element, so that the cylindrical spiral spring can play a supporting role on the anvil when the film is deformed by stress to generate displacement, and the film is continuously stressed;
furthermore, the lower part of the supporting block is provided with three grooves which are respectively matched with the pressure gauge and the supporting screws, and the grooves prevent the pressure gauge from shifting in the horizontal direction;
furthermore, the bottom of the frame is provided with a screw hole, the height of the frame from the operating table top can be adjusted by adjusting the fixing screw, and the position of the supporting block in the frame can be adjusted by adjusting the supporting screw;
further, the bottom of the frame is provided with a screw hole, and the force applied by the anvil can be adjusted by adjusting the position of the supporting block.
After adopting the scheme, the invention has the following beneficial effects:
according to a specific embodiment of the invention, the first anvil, the second anvil and the third anvil are applied and have different force application surfaces, so that acting forces with different magnitudes and different directions can be provided for the thin film, the magnitude of the force is measured by the pressure gauge and adjusted by adjusting the position of the supporting screw, and by the method, the external force applied to the thin film material to be measured is complex, changeable and detectable.
In the application of a specific embodiment of the invention, compared with the existing stress loading device, the device for testing the film prestress loading and irradiation has the following advantages: (1) the volume is small, and the device is particularly suitable for the irradiation test of the irradiation test device in a narrow space; (2) the operation is simple, and the defects that the existing device uses weights to load external force, is inconvenient to move, is difficult to fix, is complicated to adjust and the like are overcome; (3) by utilizing the matching among the frame, the supporting block and the screw, the change of external force and the relaxation of film materials caused by the deviation of the top frame anvil in the irradiation process are avoided, and the permanent stable prestress is kept; (4) different forms of prestressing can be loaded by replacing different anvils.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is an enlarged schematic view of a portion a of fig. 1.
FIG. 3 is a schematic structural diagram of the first anvil.
FIG. 4 is a cross-sectional view of anvil one.
FIG. 5 is a schematic structural diagram of a second anvil.
FIG. 6 is a cross-sectional view of the second anvil.
Fig. 7 is a schematic structural view of the anvil iii.
Fig. 8 is a cross-sectional view of the anvil iii.
Fig. 9 is a structural schematic diagram of the support block.
FIG. 10 is a cross-sectional view of the support block.
FIG. 11 is a schematic diagram of the thin film pre-stress loading and irradiation test
FIG. 12 is a graph showing the mechanical property data of films after different doses of irradiation with pre-stress applied to the top frame.
Detailed Description
The embodiments of the present invention will be described more fully hereinafter with reference to the accompanying drawings and examples, in which it is to be understood that the embodiments described are merely illustrative of some, but not restrictive, of the embodiments of the invention. 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.
Referring to fig. 1, an embodiment of the present invention provides a device for testing the prestress loading and irradiation of a thin film, which is used for applying a complex external force to the thin film shown in fig. 1, and comprises a frame 1, a supporting block 2, an anvil 3 and a pressure gauge 4.
The frame comprises an integral frame 11 with a cubic structure, a pressing plate 12 for fixing a film material to be detected and a fixing screw group 13 at the bottom of the integral frame; the supporting block 2 is arranged in the frame 11, is supported by the supporting screw 13, and can move up and down in the frame 11; the anvil 3 comprises a first anvil 31, a second anvil 32 and a third anvil 33, in this embodiment, the first anvil 31 is selected and arranged in the placing hole 21 at the upper part of the supporting block, and the supporting screw 13 is adjusted to enable the first anvil 31 to move up and down in the frame 11 without deviation; the pressure gauge 4 is fixed in the groove 22 at the lower part of the supporting block 2 by the supporting screw 62 so as not to deflect, so as to measure the magnitude of the loading force on the thin film material 5 to be tested.
The film material 5 to be tested is arranged between the frame 11 and the pressing plate 12, the anvil I31 is arranged below the film 5 as a force application component, a placing hole 312 is arranged in a cylindrical part 311 at the lower part of the anvil I31 and used for placing the spiral spring 63, and a placing hole 21 is arranged at the upper part of the supporting block 2 and used for being matched with the cylindrical part 311 of the anvil I31 so as to prevent the offset in the horizontal direction from influencing the application of external force by the anvil I31.
The bottom of the frame 11 is provided with a screw hole, the height of the frame 11 from an operation table top can be adjusted by adjusting the fixing screw group 13, the position of the supporting block 2 can be adjusted by adjusting the supporting screw 61, the position of the supporting block 2 can be adjusted to change the position of the anvil I31, and further the external force of the anvil I31 acting on the thin film material 5 to be detected can be changed.
The embodiment of the invention can provide the stress with different sizes, and the calculation formula of the stress provided in the embodiment is
Wherein, F1、F2、F3When the anvil I, the anvil II and the anvil III act respectively, the film in unit area is subjected to force; f0、F0′、F0″When the anvil I, the anvil II and the anvil III act respectively, the readings displayed by the pressure gauge are read; g1、G1′、G1″The mass of the anvil I, the mass of the anvil II and the mass of the anvil III are respectively; g2、G2′、G2″The first anvil, the second anvil and the third anvil correspond to the mass of the supporting block respectively; g3、G3′、G3″The first anvil, the second anvil and the third anvil correspond to the mass of the spiral spring respectively; alpha, beta and gamma are respectively included angles between the film and the horizontal direction when the anvil I, the anvil II and the anvil III are used for the film; s1、S2、S3The cross sectional areas of the stressed parts of the corresponding films when the anvil I, the anvil II and the anvil III act respectively.
In the process that the anvil I31 continuously applies external force to the thin film material 5 to be detected, the thin film material 5 to be detected can deform in a certain amount, and the spiral spring 63 supports the anvil I31 to continuously apply external force to the thin film material 5 to be detected when the thin film material 5 to be detected deforms.
FIG. 12 shows the change of mechanical properties of the film after different doses of irradiation with pre-stress applied in the top frame. The result shows that the fracture strength of the film has obvious change under the conditions of continuous prestress loading and irradiation, and is closely related to the irradiation dose.
Claims (6)
1. The utility model provides a be used for film prestressing force loading and irradiation test device which characterized in that: at least comprises a frame, a supporting block, an anvil and a pressure gauge;
the frame comprises an integral frame with a cubic structure, a pressing plate and a supporting screw at the bottom;
the supporting block is arranged in the frame, is supported by the supporting screw and can move up and down in the frame;
the anvil comprises an anvil I, an anvil II and an anvil III, is arranged above the supporting block, is supported by the supporting block and can move up and down in the frame;
and the pressure gauge is arranged below the supporting block and can move up and down in the frame.
2. The apparatus for thin film prestress loading and irradiation test as set forth in claim 1, wherein a thin film material to be tested is fixed on said frame by said pressing plate.
3. The apparatus for thin film prestress loading and irradiation test as set forth in claim 1, wherein said anvil is provided with a placing hole;
the upper part of the supporting block is provided with a placing hole which is clamped with the placing hole of the anvil block and can move up and down in the frame without deviation;
the clamping part of the anvil placing hole and the supporting block placing hole is provided with a cylindrical spiral spring which serves as a buffering and energy storage element and can support the anvil when the film is stressed to deform and displace, so that the film is continuously stressed and cannot be loosened.
4. The apparatus for membrane pre-stress loading and irradiation testing as claimed in claim 1, wherein the lower portion of the supporting block is provided with a groove for engaging with the pressure gauge and the screw.
5. The apparatus for testing the prestress loading and irradiation of thin film as claimed in claim 1, wherein the bottom of the frame is provided with screw holes, and the height of the frame from the operation table and the position of the supporting block can be adjusted by adjusting screws.
6. The apparatus of claim 5, wherein the magnitude of the anvil force is varied by adjusting the position of the support block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011617076.0A CN112611639A (en) | 2020-12-31 | 2020-12-31 | Be used for thin film prestressing force loading and irradiation test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011617076.0A CN112611639A (en) | 2020-12-31 | 2020-12-31 | Be used for thin film prestressing force loading and irradiation test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112611639A true CN112611639A (en) | 2021-04-06 |
Family
ID=75249741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011617076.0A Pending CN112611639A (en) | 2020-12-31 | 2020-12-31 | Be used for thin film prestressing force loading and irradiation test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112611639A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114674676A (en) * | 2022-01-05 | 2022-06-28 | 哈尔滨工业大学 | Full-automatic detection device and method for two-dimensional stroke expansion self-sealing irradiation relaxation |
| CN114778323A (en) * | 2022-01-05 | 2022-07-22 | 哈尔滨工业大学 | Full-automatic detection device and method for one-dimensional stroke expansion irradiation relaxation |
-
2020
- 2020-12-31 CN CN202011617076.0A patent/CN112611639A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114674676A (en) * | 2022-01-05 | 2022-06-28 | 哈尔滨工业大学 | Full-automatic detection device and method for two-dimensional stroke expansion self-sealing irradiation relaxation |
| CN114778323A (en) * | 2022-01-05 | 2022-07-22 | 哈尔滨工业大学 | Full-automatic detection device and method for one-dimensional stroke expansion irradiation relaxation |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104502202B (en) | Online material biaxial static-dynamic performance test platform under service temperature | |
| CN112611639A (en) | Be used for thin film prestressing force loading and irradiation test device | |
| CN103487315B (en) | A kind of material mechanical performance proving installation | |
| CN204255775U (en) | Material twin shaft static and dynamic performance on-line testing platform under service temperature | |
| CN105181500B (en) | Stretching-bending combined load in-situ nano impression test device and method | |
| CN104913974A (en) | Material micro-mechanical property biaxial tension-fatigue test system and test method thereof | |
| CN103776565B (en) | The standard prestressing force charger of method of testing inspection it is pressed into for residual stress | |
| CN103308404A (en) | In-situ nano-indentation tester based on adjustable stretching-bending preload | |
| CN105067431A (en) | Tension-shear preload based in-situ indentation testing device and method | |
| CN204718885U (en) | Material Micro Mechanical Properties is biaxial stretch-formed-fatigue test system | |
| CN109708969B (en) | Method for determining anisotropy and tension-compression asymmetry characteristics of metal material | |
| CN109596801A (en) | A kind of store experiment device and method for simulating solid rocket motor grain stress | |
| CN215414730U (en) | Be used for thin film prestressing force loading and irradiation test device | |
| Chen et al. | Adaptive curvature flexure test to assess flexible electronic systems | |
| CN105115822B (en) | A kind of universality single shaft slide bar type deformeter high | |
| CN205015236U (en) | Compound load normal position nanometer indentation testing arrangement of drawing - bending | |
| CN201364295Y (en) | Dual-shaft testing platform of membrane material mechanics | |
| RU148805U1 (en) | PANEL TEST STAND | |
| CN204903298U (en) | Drawing - shearing preloads normal position indentation testing arrangement | |
| CN111650063A (en) | Normal load loading device based on single-shaft fatigue testing machine | |
| CN113776958B (en) | Roller bending device for bending test | |
| CN212722435U (en) | Normal load loading device based on single-shaft fatigue testing machine | |
| US20230021162A1 (en) | Bench for mechanically characterising thin objects with increased reliability | |
| CN201965060U (en) | Filament fiber loading and measuring device under Raman environment | |
| Zong et al. | Development of modular cryogenic indentation apparatus for investigating micro-region mechanical properties of materials |
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 |