CN110426290B - Linear tensile torsion load and thermal field coupling in-situ mechanical property tester - Google Patents
Linear tensile torsion load and thermal field coupling in-situ mechanical property tester Download PDFInfo
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- CN110426290B CN110426290B CN201910442311.6A CN201910442311A CN110426290B CN 110426290 B CN110426290 B CN 110426290B CN 201910442311 A CN201910442311 A CN 201910442311A CN 110426290 B CN110426290 B CN 110426290B
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- 238000011065 in-situ storage Methods 0.000 title claims abstract description 26
- 230000008878 coupling Effects 0.000 title claims abstract description 12
- 238000010168 coupling process Methods 0.000 title claims abstract description 12
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 12
- 238000004804 winding Methods 0.000 claims abstract description 159
- 238000010438 heat treatment Methods 0.000 claims abstract description 42
- 238000006073 displacement reaction Methods 0.000 claims abstract description 19
- 238000003825 pressing Methods 0.000 claims description 24
- 230000005540 biological transmission Effects 0.000 claims description 12
- 238000012360 testing method Methods 0.000 abstract description 41
- 230000006378 damage Effects 0.000 abstract description 8
- 238000001069 Raman spectroscopy Methods 0.000 abstract description 5
- 230000003287 optical effect Effects 0.000 abstract description 5
- 238000012512 characterization method Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 21
- 238000002441 X-ray diffraction Methods 0.000 description 6
- 238000012544 monitoring process Methods 0.000 description 5
- 238000009864 tensile test Methods 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011066 ex-situ storage Methods 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000012612 commercial material Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000001808 coupling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000004154 testing of material Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/18—Performing tests at high or low temperatures
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/26—Investigating twisting or coiling properties
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- 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
- G01N2203/0017—Tensile
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- 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
- G01N2203/0026—Combination of several types of applied forces
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- 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
- G01N2203/003—Generation of the force
- G01N2203/005—Electromagnetic means
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- 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
- G01N2203/0222—Temperature
- G01N2203/0226—High temperature; Heating means
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- 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
- G01N2203/026—Specifications of the specimen
- G01N2203/0262—Shape of the specimen
- G01N2203/0278—Thin specimens
- G01N2203/028—One dimensional, e.g. filaments, wires, ropes or cables
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- 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
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/0641—Indicating or recording means; Sensing means using optical, X-ray, ultraviolet, infrared or similar detectors
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- 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)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a linear tension torsion load and thermal field coupling in-situ mechanical property tester which comprises a base, a first winding disc, a second winding disc, a first motor, a first worm shaft, a first lead screw nut, a first slide block guide rail, a first slide block, a support frame, a back plate, a second slide block guide rail, a second slide block, a support block, a force sensor, a displacement sensor, a second motor, a second worm shaft, a second rotating shaft, a torque sensor, a heating table support and a heating assembly. The invention has small volume and compact structure, and can be directly combined with a Raman spectrometer, an XRD, a super-depth-of-field microscope or an optical microscope to realize in-situ characterization of microscopic damage evolution of a tested test piece.
Description
Technical Field
The invention relates to a mechanical property testing instrument, in particular to a microscopic in-situ mechanical property testing instrument and in-situ microscopic mechanical property testing equipment for a wire (filament) composite tensile-torsional load and thermal field coupling material.
Background
The thin wire (silk) material is a material widely applied in production, and the stress is on the same horizontal line on the thin wire (silk) material. Because of the consistency of the stress directions, the thin wire (silk) material has no bending rigidity and can only resist the tensile force. However, in actual use, the device is not damaged in a single form, but is combined with complex stress. This requires that the fine wire (filament) type material must have a capability of bearing mechanical loads without exceeding allowable deformation or destruction, which is the mechanical properties of the material, and that the mechanical properties of the material and various factors affecting the mechanical properties of the material must be known by combining the failure modes of the material and designing experiments.
The tensile test is one of the most widely applied mechanical property test methods. The traditional tensile test is generally carried out on a universal material testing machine, during the test, the movable cross beam is adjusted to a proper position, the standard sample is clamped when being in a vertical state and in a middle position, and then the standard sample is loaded for stretching, and the tensile fatigue loading is more consistent with the actual working conditions of structural components and functional components in actual production, so that the tensile test is usually adopted.
The in-situ mechanical property test is a mechanical property test technology for carrying out mechanical property test on a test piece material under micro-nano scale, and carrying out whole-course dynamic monitoring on microscopic deformation damage of the material under the action of a load through observation instruments such as an electron microscope. The technology deeply reveals the micromechanics behavior, damage mechanism and the correlation rule between the damage mechanism and the load action and the material performance of various materials and products thereof. However, the tensile testing device is large in size, and belongs to the field of ex-situ tensile testing, namely in-situ real-time dynamic monitoring of a tested piece can not be carried out under the tensile loading working condition by means of microscopic imaging components such as a scanning electron microscope, a Raman spectrometer, a laser confocal microscope, a super-depth-of-field microscope and the like in the dynamic process of testing.
Disclosure of Invention
The invention aims to: in order to overcome the defects in the prior art, the invention provides a linear tension torsion load and thermal field coupling in-situ mechanical property tester, which aims to solve the technical problems that the existing tension test device in the prior art is large in size, belongs to the field of ex-situ tension test, and can not carry out in-situ real-time dynamic monitoring on a tested piece by means of microscopic imaging components such as a scanning electron microscope, a Raman spectrometer, a laser confocal microscope, a super-depth-of-field microscope and the like under the tension loading working condition in the dynamic process of test.
The technical scheme is as follows: in order to achieve the above purpose, the invention adopts the following technical scheme:
A linear tension torsion load and thermal field coupling in-situ mechanical property tester, comprises a base, a first winding disc base, a stretching part of the winding disc base, a first winding disc cover, a second winding disc cover, a first handle a first spring, a first pressing block, a first deep groove ball bearing, a second winding disc base, a twisting part of the winding disc base the second winding disc, the first winding disc cover, the second handle, the second spring, the second pressing block, the first deep groove ball bearing, the second deep groove ball bearing, the first motor flange, the first worm shaft, the first worm bearing, the first worm second worm, the second worm, The first turbine II, the first worm I, the first turbine I, the first lead screw fixed block, the first lead screw nut, the first slider guide rail, the first slider, the support frame, the back plate, the second slider guide rail, the second slider, the support block, the force sensor, the displacement bracket, the second motor flange, the second worm shaft, the second worm bearing I, the second worm II, the second turbine II, the second worm I, the second turbine I, the second rotating shaft, the torque sensor, the heating table bracket and the heating component, wherein one end of the first winding disc is arranged on the first winding disc base through the first deep groove ball bearing I, the other end of the first winding disc is arranged on the first winding disc base through the first deep groove ball bearing II, the first handle is connected with the first winding disc rotating shaft through a first rotating shaft. The first rotating shaft is provided with a first gear. The first winding disc cover II is provided with a first groove, the first spring and the first pressing block are sequentially placed in the first groove, the first winding disc cover I is installed on the first winding disc base, the first deep groove ball bearing I is located in the first winding disc cover I, the first winding disc cover II is installed on the first winding disc base, the first deep groove ball bearing II and the first gear are located in the first winding disc cover II, and the first gear is in contact with the first pressing block. The stretching part of the winding disc base is arranged on the first winding disc base. The first winding disc is provided with a first winding fixing hole. One end of the second winding disc is arranged on the second winding disc base through a first deep groove ball bearing, the other end of the second winding disc is arranged on the second winding disc base through a second deep groove ball bearing, and the second handle is connected with the second winding disc through a second rotating shaft. And a second gear is arranged on the second rotating shaft. The second winding disc cover is provided with a second groove, the second spring and the second pressing block are sequentially placed in the second groove, the first winding disc cover is installed on the second winding disc base, the first deep groove ball bearing is located in the first winding disc cover, the second winding disc cover is installed on the second winding disc base, the second deep groove ball bearing and the second gear are located in the second winding disc cover, and the second gear is in contact with the second pressing block. The torsion part of the winding disc base is arranged on the second winding disc base. And a second winding fixing hole is formed in the second winding disc. The first winding disc and the second winding disc are oppositely arranged. The first motor is fixedly arranged on the base through a first motor flange, the first worm is arranged on a rotating shaft of the first motor, the first worm shaft is arranged on the base through a first worm bearing, the second worm and the first turbine are respectively arranged on the first worm shaft, and the second turbine is in transmission connection with the first worm. The first screw is installed on the base through a first screw fixing block, the first turbine is fixedly connected with the first screw, the first turbine is in transmission connection with the first worm, and the first screw nut is arranged on the first screw. The first slider guide rail is installed on the base, the first slider is arranged on the first slider guide rail, the first slider is in sliding connection with the first slider guide rail, the support frame is fixedly installed on the first slider, the second slider guide rail is arranged on the support frame, the second slider is arranged on the second slider guide rail, and the second slider is in sliding connection with the second slider guide rail. The back plate is fixedly arranged on the support frame, the support block is fixedly arranged on the second sliding block, one end of the force sensor is fixedly arranged on the back plate, the other end of the force sensor is fixedly arranged on the support block, the first screw nut is fixedly connected with the support block, and the torsion part of the winding disc base is fixedly connected with the support block. The displacement support is fixedly arranged on the base, one end of the displacement sensor is fixedly connected with the displacement support, and the other end of the displacement sensor is fixedly connected with the support frame. The second motor is fixedly arranged on the base through a second motor flange, the first worm is arranged on a rotating shaft of the second motor, the second worm shaft is arranged on the base through a first worm bearing, the second worm and the second turbine are respectively arranged on the second worm shaft, and the second turbine is in transmission connection with the first worm. One end of the torque sensor is connected with a first turbine through a second rotating shaft, and the first turbine is in transmission connection with a second worm. The other end of the torque sensor is fixedly connected with the torsion part of the winding disc base. The heating table support is detachably arranged on the base, an observation seam is formed in the top of the heating assembly, the heating assembly is arranged on the heating table support, and the heating assembly is located between the first winding disc and the second winding disc.
Preferably: the torque sensor is arranged on the base through the torsion bracket, and the torque sensor rotates with the torsion bracket through a bearing.
Preferably: the heating component is tubular.
Preferably: the heating table support is installed on the base in a bolt connection mode, or the heating table support is installed on the base in a buckle connection mode.
Preferably: the first motor and the second motor are both motors with encoders.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention has compact structure, good synchronism, small energy consumption and wide test range, and can be adjusted and replaced according to the diameter of the test wire (wire). The composite loading of the tensile load and the torsional load of the wire (silk) material test is realized.
2. The invention has compact structural layout and is beneficial to being compatible with other commercial material performance instruments and equipment. The method can be integrated with devices such as XRD, an ultra-depth-of-field microscope, an optical microscope and the like, realizes in-situ characterization of microscopic deformation damage of the wire (filament) material under tensile load, torsional load and composite tensile-torsional load, obtains the evolution rule of the damage under different loads, and has important significance in researching failure mechanisms of the wire (filament) material.
3. The detachable heating component can provide guarantee for researching the mechanical properties of wire (filament) materials under different loads and thermal field coupling.
Drawings
FIG. 1 is a schematic view of the structure of the present invention
FIG. 2 is a schematic view of a structure of a winding disc
FIG. 3 is a schematic view of a structure of a winding disc with various sizes
FIG. 4 is a schematic diagram of the connection of a motor, turbine and worm gear providing torsional loading
FIG. 5 is a schematic diagram of the connection of a motor, turbine and worm gear providing a tensile load
FIG. 6 is a schematic view of a heating device
Detailed Description
The present application is further illustrated in the accompanying drawings and detailed description which are to be understood as being merely illustrative of the application and not limiting of its scope, and various equivalent modifications to the application will fall within the scope of the application as defined in the appended claims after reading the application.
In the description of the present invention, it should be noted that terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like are used for convenience in describing the present invention and simplifying the description only, and do not denote or imply that the apparatus or elements being referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like, as used herein, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly stated and limited otherwise, the terms "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected. Either mechanically or electrically. Can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
A wire type tensile torsion load and thermal field coupling in-situ mechanical property tester, as shown in figures 1-6, comprises a base 1, a first winding disc base 101, a winding disc base stretching part 1011, a first winding disc 102, a first winding disc cover 103, a first winding disc cover II, a first handle 104, a first spring 105, a first pressing block 106, a first deep groove ball bearing I, a first deep groove ball bearing II 107, a second winding disc base, a winding disc base twisting part 2011, a second winding disc cover I, a second winding disc cover II 203, a second handle 204, a second spring, a second pressing block, a second deep groove ball bearing I, a second deep groove ball bearing II, Second deep groove ball bearing two, first motor 301, first motor flange 302, first worm shaft 303, first worm bearing one 304, first worm two 305, first worm two 306, first worm one 307, first worm one 308, first screw rod fixing block 309, first screw rod 310, first screw rod nut 311, first slide block guide 321, first slide block 322, support frame 323, back plate 324, second slide block guide 325, second slide block 326, support block 327, force sensor 328, displacement sensor 330, displacement bracket 331, second motor 401, and, The second motor flange 402, the second worm shaft 403, the first worm bearing 404, the second worm 405, the second turbine 406, the first worm 407, the first turbine 408, the second rotating shaft 409, the torque sensor 410, the heating table bracket 411, and the heating component, the first motor 301 and the second motor 401 are all motors with encoders, wherein, as shown in fig. 2, one end of the first winding disc 102 is mounted on the first winding disc base 101 through the first deep groove ball bearing, the other end of the first winding disc 102 is mounted on the first winding disc base 101 through the second deep groove ball bearing 107, the first handle 104 is pivotally connected to the first winding disc 102 via a first pivot. The first rotating shaft is provided with a first gear 108. The first winding disc cover II is provided with a first groove, the first spring 105 and the first pressing block 106 are sequentially placed in the first groove, the first winding disc cover 103 is installed on the first winding disc base 101, the first deep groove ball bearing is located in the first winding disc cover 103, the first winding disc cover II is installed on the first winding disc base 101, the first deep groove ball bearing II 107 and the first gear 108 are located in the first winding disc cover II, and the first gear 108 is in contact with the first pressing block 106. The spool base extension 1011 is disposed on the first spool base 101. The first winding disc 102 is provided with a first winding fixing hole 1021. One end of the second winding disc is arranged on the second winding disc base through a first deep groove ball bearing, the other end of the second winding disc is arranged on the second winding disc base through a second deep groove ball bearing, and the second handle 204 is connected with a second winding disc rotating shaft through a second rotating shaft. And a second gear is arranged on the second rotating shaft. The second winding disc cover II is provided with a second groove, the second spring and the second pressing block are sequentially placed in the second groove, the first winding disc cover II is installed on the second winding disc base, the first deep groove ball bearing is located in the first winding disc cover II, the second winding disc cover II 203 is installed on the second winding disc base, the second deep groove ball bearing and the second gear are located in the second winding disc cover II 203, and the second gear is in contact with the second pressing block. The twisting part 2011 of the winding disc base is arranged on the second winding disc base. And a second winding fixing hole is formed in the second winding disc. The first winding disc 102 and the second winding disc are oppositely arranged. As shown in fig. 3, in order to facilitate test pieces of different sizes, the winding disc is provided with a group of winding disc assemblies with different through holes and grooves, and a proper winding disc can be selected according to the diameter of the tested wire during clamping. As shown in fig. 4, the first motor 301 is fixedly mounted on the base 1 through a first motor flange 302, the first worm 307 is mounted on a rotating shaft of the first motor 301, the first worm shaft 303 is mounted on the base 1 through a first worm bearing 304, the second worm 305 and the second worm gear 306 are respectively mounted on the first worm shaft 303, and the second worm gear 306 is in transmission connection with the first worm 307. The first screw 310 is mounted on the base 1 through a first screw fixing block 309, the first turbine 308 is fixedly connected with the first screw 310, the first turbine 308 is in transmission connection with the first worm 305, and the first screw nut 311 is arranged on the first screw 310. The first slider guide rail 321 is installed on the base 1, the first slider 322 is disposed on the first slider guide rail 321, and the first slider 322 is slidably connected with the first slider guide rail 321, the support frame 323 is fixedly installed on the first slider 322, the second slider guide rail 325 is disposed on the support frame 323, the second slider 326 is disposed on the second slider guide rail 325, and the second slider 326 is slidably connected with the second slider guide rail 325. The back plate 324 is fixedly installed on the support frame 323, the support block 327 is fixedly installed on the second sliding block 326, the force sensor 328 is used for detecting the load of the force applied to the test piece, one end of the force sensor 328 is fixedly installed on the back plate 324, the other end of the force sensor 328 is fixedly installed on the support block 327, the first lead screw nut 311 is fixedly connected with the support block 327, and the torsion 2011 of the winding disc base is fixedly connected with the support block 327. The displacement bracket 331 is fixedly mounted on the base 1, one end of the displacement sensor 330 is fixedly connected with the displacement bracket 331, and the other end is fixedly connected with the support frame 323. As shown in fig. 5, the second motor 401 is fixedly mounted on the base 1 through a second motor flange 402, the first second worm 407 is mounted on a rotating shaft of the second motor 401, the second worm shaft 403 is mounted on the base 1 through a first second worm bearing 404, the second worm 405 and the second worm gear 406 are respectively mounted on the second worm shaft 403, and the second worm gear 406 is in transmission connection with the first second worm 407. The torque sensor 410 is used for detecting the torque applied to the test piece, one end of the torque sensor 410 is connected with the first turbine 408 through the second rotating shaft 409, and the first turbine 408 is in transmission connection with the second worm 405. The other end of the torque sensor 410 is fixedly connected to a torsion 2011 of the spool base. The torque sensor 410 is mounted on the base 1 through the torsion bracket 220, and the torque sensor 410 is rotated with the torsion bracket 220 through a bearing. As shown in fig. 6, the heating table bracket 411 is detachably mounted on the base 1, an observation slit is formed at the top of the heating assembly, the heating assembly is mounted on the heating table bracket 411, and the heating assembly is located between the first winding disc 102 and the second winding disc. The heating component is used for heating a test piece to be tested, the heating component is tubular, heating can be more concentrated, heating is more effective, a small gap is reserved on the heating device, and in-situ monitoring can be facilitated. When in-situ detection is needed, the real-time dynamic in-situ mechanical property test can be performed by directly combining the test piece and the mechanical property tester with an XRD (X-ray diffraction), super-depth-of-field microscope or optical microscope. The heating table bracket 411 is mounted on the base 1 through a bolt connection mode, or the heating table bracket 411 is mounted on the base 1 through a buckle connection mode.
When in testing, the tester is placed under an in-situ observation device, wherein the in-situ observation device can be a Raman spectrometer, an XRD, a super-depth-of-field microscope or an optical microscope, an observation hole of the in-situ observation device corresponds to an observation seam at the top of a heating component, firstly, the distance between a first winding disc 102 and a second winding disc can be adjusted through the relative sliding of a first sliding block guide rail 321 and a first sliding block 322, after the distance between the first winding disc 102 and the second winding disc is adjusted, one end of a test piece to be tested is wound and fixed on the first winding disc 102 through a first winding fixing hole 1021, and the other end of the test piece passes through the heating component, then the first handle 104 and the second handle 204 are rotated to tighten the workpiece to be tested, the two handles are rotated to tighten the workpiece to a required degree, the first wire winding disc 102 and the second wire winding disc can only rotate in one direction due to the action of the first pressing block 106 and the second pressing block, when the first pressing block 106 reversely rotates, the first gear 108 is blocked by the first pressing block 106, the first gear 108 is prevented from reversely rotating, the first wire winding disc 102 is further prevented from reversely rotating, when the second pressing block reversely rotates, the second gear is blocked by the second pressing block, the second gear is prevented from reversely rotating, the second wire winding disc is further prevented from reversely rotating, the heating assembly is started to heat the test piece to be tested, the first motor 301 is started, the first motor 301 drives the first worm 307 to rotate, the first worm 307 drives the first turbine II 306 to rotate, the first worm shaft 303 is driven to rotate, the first worm shaft 303 drives the first worm II 305 to rotate, the first turbine I308 is driven to rotate, the first lead screw 310 is driven to rotate, the first lead screw nut 311 is driven to move by the first lead screw nut 311, the supporting block 327 is driven to move on the second slider guide rail 325, and the supporting block 327 is driven to move, so that the force sensor 328, the force sensor 310 and the second slider guide rail are respectively driven to rotate, The displacement sensor 330 and the stretching portion 1011 of the coil base move, and the stretching portion 1011 of the coil base drives the test piece to be tested to move through the first winding disc 102, so that the tension applied to the test piece to be tested at the moment can be measured through the force sensor 328, and the stretched length of the test piece to be tested at the moment can be measured through the displacement sensor 330. According to the invention, the first motor 301 and the worm gear drive the first screw 310 to rotate, and the first screw 310 is fixed on the first screw fixing block 309, so that the first screw nut 311 is driven to realize axial movement, the first screw nut 311 is connected with the supporting block 327, and finally, the force application of the workpiece to be tested in the axial direction is realized. The second motor 401 is started, the second motor 401 drives the first second worm 407 to rotate, the first second worm 407 drives the second turbine II 406 to rotate, the second turbine II 406 drives the second worm shaft 403 to rotate, the second worm shaft 403 drives the second worm II 405 to rotate, the second worm II 405 drives the first turbine 408 to rotate, the first turbine 408 drives the torque sensor 410 to rotate, the torque sensor 410 drives the torsion part 2011 of the coil base to rotate, the torsion part 2011 of the coil base drives the test piece to be tested to rotate through the second coil, and the torque received by the test piece to be tested at the moment can be measured through the torque sensor 410. The second motor 401 and the worm gear drive the second rotating shaft 409 to rotate, and then the torque sensor 410 drives the second winding disc to rotate, so that the force application on the torsion direction of the test piece to be tested is finally realized. Finally, the mechanical properties of the tensile and torsion of the test piece to be tested under the coupling action of the thermal field can be checked through the in-situ observation device.
When the tester is used, the test piece to be tested is placed between the first winding disc and the second winding disc to be fixed, then the test piece is stretched and twisted, the force born by the test piece in the stretching direction is detected, the dimensional change generated by the test piece in the stretching direction is detected, and the torque born by the test piece in the torque direction is detected. Meanwhile, the tester has small volume and compact structure, can be directly combined with a Raman spectrometer, an XRD (X-ray diffraction), a super-depth-of-field microscope or an optical microscope, realizes in-situ monitoring and characterization of the evolution of microscopic damage of a tested test piece, and provides a reference for researching failure mechanisms of materials. Compared with the existing equipment with large volume, complex structure, high cost, poor compatibility and the like, the tester provided by the invention tests the micromechanics of the material by using different load loading modes, thereby providing reliable in-situ micromechanics test of the material.
The foregoing is only a preferred embodiment of the invention, it being noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the invention.
Claims (4)
1. A linear tension torsion load and thermal field coupling in-situ mechanical property tester is characterized in that: comprises a base (1), a first winding disc base (101), a winding disc base stretching part (1011), a first winding disc (102), a first winding disc cover I (103), a second winding disc cover I, a first handle (104), a first spring (105), a first pressing block (106), a first deep groove ball bearing I, a second deep groove ball bearing II (107), a second winding disc base, a winding disc base twisting part (2011), a second winding disc cover I, a second winding disc cover II (203), The second handle (204), the second spring, the second pressing block, the first deep groove ball bearing, the second deep groove ball bearing, the first motor (301), the first motor flange (302), the first worm shaft (303), the first worm bearing (304), the first worm second (305), the first worm second (306), the first worm first (307), the first worm first (308), the first screw fixing block (309), the first screw (310), the first screw nut (311), the first slide block guide rail (321), the first slide block (322), the support frame (323), the back plate (324), The first winding disc (102) comprises a first sliding block guide rail (325), a first sliding block (326), a supporting block (327), a force sensor (328), a displacement sensor (330), a displacement bracket (331), a first motor (401), a first motor flange (402), a first worm shaft (403), a first worm bearing (404), a second worm screw (405), a second worm wheel (406), a first worm wheel (407), a first worm wheel (408), a second rotating shaft (409), a torque sensor (410), a heating table bracket (411) and a heating component, wherein one end of the first winding disc (102) is arranged on a first winding disc base (101) through a first deep groove ball bearing, the other end of the first winding disc (102) is arranged on the first winding disc base (101) through a second deep groove ball bearing (107), and the first handle (104) is connected with the first winding disc (102) through a first rotating shaft; a first gear (108) is arranged on the first rotating shaft; the first winding disc cover II is provided with a first groove, the first spring (105) and the first pressing block (106) are sequentially placed into the first groove, the first winding disc cover I (103) is installed on the first winding disc base (101), the first deep groove ball bearing I is located in the first winding disc cover I (103), the first winding disc cover II is installed on the first winding disc base (101), the first deep groove ball bearing II (107) and the first gear (108) are located in the first winding disc cover II, and the first gear (108) is in contact with the first pressing block (106); the stretching part (1011) of the winding disc base is arranged on the first winding disc base (101); a first winding fixing hole (1021) is formed in the first winding disc (102); one end of the second winding disc is arranged on the second winding disc base through a first deep groove ball bearing, the other end of the second winding disc is arranged on the second winding disc base through a second deep groove ball bearing, and the second handle (204) is connected with a second winding disc rotating shaft through a second rotating shaft; a second gear is arranged on the second rotating shaft; the second winding disc cover II is provided with a second groove, the second spring and the second pressing block are sequentially placed in the second groove, the first winding disc cover I is installed on the second winding disc base, the first deep groove ball bearing I is positioned in the first winding disc cover I, the second winding disc cover II (203) is installed on the second winding disc base, the second deep groove ball bearing II and the second gear are positioned in the second winding disc cover II (203), and the second gear is in contact with the second pressing block; the twisting part (2011) of the winding disc base is arranged on the second winding disc base; a second winding fixing hole is formed in the second winding disc; the first winding disc (102) and the second winding disc are oppositely arranged; the first motor (301) is fixedly arranged on the base (1) through a first motor flange (302), the first worm (307) is arranged on a rotating shaft of the first motor (301), the first worm shaft (303) is arranged on the base (1) through a first worm bearing (304), the first worm II (305) and the first worm wheel II (306) are respectively arranged on the first worm shaft (303), and the first worm wheel II (306) is in transmission connection with the first worm wheel I (307); the first screw (310) is arranged on the base (1) through a first screw fixing block (309), the first turbine I (308) is fixedly connected with the first screw (310), the first turbine I (308) is in transmission connection with the first worm II (305), and the first screw nut (311) is arranged on the first screw (310); the first slider guide rail (321) is arranged on the base (1), the first slider (322) is arranged on the first slider guide rail (321), the first slider (322) is in sliding connection with the first slider guide rail (321), the supporting frame (323) is fixedly arranged on the first slider (322), the second slider guide rail (325) is arranged on the supporting frame (323), the second slider (326) is arranged on the second slider guide rail (325), and the second slider (326) is in sliding connection with the second slider guide rail (325); the back plate (324) is fixedly arranged on the support frame (323), the support block (327) is fixedly arranged on the second sliding block (326), one end of the force sensor (328) is fixedly arranged on the back plate (324), the other end of the force sensor is fixedly arranged on the support block (327), the first screw nut (311) is fixedly connected with the support block (327), and the torsion part (2011) of the winding disc base is fixedly connected with the support block (327); the displacement bracket (331) is fixedly arranged on the base (1), one end of the displacement sensor (330) is fixedly connected with the displacement bracket (331), and the other end of the displacement sensor is fixedly connected with the support frame (323); the second motor (401) is fixedly arranged on the base (1) through a second motor flange (402), the first second worm (407) is arranged on a rotating shaft of the second motor (401), the second worm shaft (403) is arranged on the base (1) through a first second worm bearing (404), the second worm (405) and the second worm wheel (406) are respectively arranged on the second worm shaft (403), and the second worm wheel (406) is in transmission connection with the first second worm (407); one end of the torque sensor (410) is connected with a first turbine (408) through a second rotating shaft (409), and the first turbine (408) is in transmission connection with a second worm (405); the other end of the torque sensor (410) is fixedly connected with a torsion part (2011) of the winding disc base; the heating table support (411) is detachably arranged on the base (1), an observation slit is formed in the top of the heating assembly, the heating assembly is arranged on the heating table support (411), and the heating assembly is positioned between the first winding disc (102) and the second winding disc;
the first motor (301) and the second motor (401) are motors with encoders.
2. The linear tension torsion load and thermal field coupling in-situ mechanical property tester according to claim 1, wherein: the torque sensor (410) is mounted on the base (1) through the torsion bracket (220), and the torque sensor (410) rotates with the torsion bracket (220) through a bearing.
3. The linear tension torsion load and thermal field coupling in-situ mechanical property tester according to claim 2, wherein: the heating component is tubular.
4. The linear tension torsion load and thermal field coupling in-situ mechanical property tester according to claim 3, wherein: the heating table support (411) is installed on the base (1) in a bolt connection mode, or the heating table support (411) is installed on the base (1) in a buckle connection mode.
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| CN201910442311.6A CN110426290B (en) | 2019-05-24 | 2019-05-24 | Linear tensile torsion load and thermal field coupling in-situ mechanical property tester |
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| CN110426290B true CN110426290B (en) | 2024-05-24 |
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| CN111781187B (en) * | 2020-06-29 | 2022-08-02 | 哈尔滨工业大学 | Bidirectional tensile stress micro-Raman sample table for fibrous sample |
| CN112255129B (en) * | 2020-10-22 | 2023-06-27 | 江苏理工学院 | External torsion loading device of vascular stent |
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