CN110853697B - High-precision micro-motion displacement generating device - Google Patents
High-precision micro-motion displacement generating device Download PDFInfo
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- CN110853697B CN110853697B CN201911237820.1A CN201911237820A CN110853697B CN 110853697 B CN110853697 B CN 110853697B CN 201911237820 A CN201911237820 A CN 201911237820A CN 110853697 B CN110853697 B CN 110853697B
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- 230000003287 optical effect Effects 0.000 claims description 6
- 238000012360 testing method Methods 0.000 claims description 6
- 238000011084 recovery Methods 0.000 claims description 4
- 238000005259 measurement Methods 0.000 abstract description 3
- 238000011160 research Methods 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
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- G—PHYSICS
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- G12B—CONSTRUCTIONAL DETAILS OF INSTRUMENTS, OR COMPARABLE DETAILS OF OTHER APPARATUS, NOT OTHERWISE PROVIDED FOR
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Abstract
A high-precision micro-motion displacement generating device comprises a micro-motion displacement generating device, a laser ranging and resultant force measuring device, a displacement conducting device, a sample clamp device and a control and data acquisition device; the displacement conduction device comprises three first support plates, second support plates and third support plates which are arranged in parallel, wherein the second support plates are slidably embedded in the first support plates, and the third support plates are slidably embedded in the second support plates; the two ends of the third supporting plate are provided with a first pushing block and a second pushing block relatively, and the two ends of the second supporting plate are provided with a micro-motion displacement generating device and a laser ranging and resultant force measuring device relatively; the left end of the first push block is fixedly connected with the micro-motion displacement generating device, and the right end of the second push block is abutted with the laser ranging and resultant force measuring device; the middle part of the third supporting plate is provided with a sample groove for placing a sample. The invention can generate high-precision micro-displacement and has high measurement displacement resolution.
Description
Technical Field
The invention relates to the field of fretting friction and wear experimental devices, in particular to a high-precision fretting displacement generating device.
Background
Damage caused by fretting wear has been a focus of attention in the fields of military devices, aerospace, automobiles, and the like. Fretting wear refers to the relative motion of two components with extremely small amplitude on the contact surface, and the fretting wear causes frictional wear on the contact surface, so that the components are meshed loose, efficiency loss and the like, and the damage is huge especially under the condition that some environmental factors such as high speed and corrosion are severe. For example, the most easily occurring wear form of the aircraft connection piece is fretting wear, and during the working process of the joint of the rotor blade and the wheel disc of the aircraft engine, temperature stress is generated due to vibration of the engine or temperature circulation between contact surfaces, so that fretting wear is extremely easy to generate between the contact surfaces, and cracks are generated to cause the failure of parts. Annual aircraft losses due to fretting wear are hundreds of millions of dollars, so students in various countries are actively working into the friction and wear research effort.
In research of fretting wear, it is most important how to simulate a fretting wear situation, so how to design a device for generating fretting wear becomes the research direction of many researchers. When simulating fretting wear, it is important how to generate fretting displacement, and the accuracy of the fretting displacement determines the reliability of the research result. Currently, most of the devices used in the market for generating micro-motion displacement cannot achieve the desired micro-motion displacement, cannot achieve the target order of magnitude, and generate larger errors when the displacement generated by measurement is performed.
Disclosure of Invention
In order to overcome the problems, the invention provides a high-precision micro-motion displacement generating device which is simple to operate and less influenced by the environment.
The technical scheme adopted by the invention is as follows: a high-precision micro-motion displacement generating device is characterized in that: the device comprises a micro-motion displacement generating device, a laser ranging and resultant force measuring device, a displacement conduction device, a sample clamp device and a control and data acquisition device;
The displacement conduction device comprises: the three first support plates, the second support plates and the third support plates are arranged in parallel, the length of the first support plate is larger than that of the second support plate, and the length of the second support plate is larger than that of the third support plate; the first support plate is horizontally arranged on the test bed, first guide rails are arranged on two sides of the first support plate along the length direction of the first support plate, and the second support plate is slidably arranged in the first support plate through first balls; the two sides of the second supporting plate are provided with second guide rails along the length direction of the second supporting plate, and the third supporting plate is slidably arranged in the second supporting plate through second balls; the left end and the right end of the third support plate along the length direction are oppositely provided with a first push block and a second push block, and the left end and the right end of the second support plate along the length direction are oppositely provided with a micro-motion displacement generating device and a laser ranging and resultant force measuring device; the left end of the first push block is fixedly connected with the micro-motion displacement generating device, and the right end of the second push block is abutted with the laser ranging and resultant force measuring device; a sample groove for placing a sample is formed in the middle of the third supporting plate; the micro-motion displacement generating device, the sample tank and the laser ranging and resultant force measuring device are positioned on the same parallel line;
The micro-motion displacement generating device includes: the actuator fixing box is of a hollow square structure with an open top, an upper cover of the actuator fixing box is horizontally arranged at the top of the actuator fixing box, and a push plate is horizontally arranged at the bottom of the actuator fixing box; the front side wall and the rear side wall of the actuator fixing box are provided with a first slot for installing an upper cover of the actuator fixing box and a second slot for installing a push plate, the left ends of the first slot and the second slot are respectively opened, the upper cover of the actuator fixing box and the push plate are respectively inserted into the actuator fixing box from corresponding openings, the left ends of the upper cover of the actuator fixing box and the push plate are respectively provided with a handle, and the upper cover of the actuator fixing box is also provided with an outlet for connecting an actuator; the upper surface of the push plate is provided with an actuator, the front side wall, the rear side wall and the left side wall of the actuator fixing box and the upper cover of the actuator fixing box are respectively provided with a screw hole for a bolt to pass through, and the bolt is arranged in the screw hole and extends into the actuator fixing box through the screw hole to lock the actuator; an output shaft of the actuator is connected with the actuator push head, and the right end of the actuator push head penetrates through the actuator fixing box and is fixedly connected with the first push block;
The laser ranging and resultant force measuring device includes: the fixing plate is vertically arranged on the second supporting plate, the top end of the fixing plate is provided with a laser emitter bracket, and the laser emitter bracket is provided with a laser emitter; the laser beam emitted by the laser emitter is vertically downward, and a reflecting mirror is arranged below the laser beam; the reflecting mirror is fixed at the left end of the fixed plate, and the laser beam reflected by the reflecting mirror becomes horizontal left; the left end of the fixed plate is also vertically provided with a high-elasticity return plate, the high-elasticity return plate and the reflecting mirror are positioned at the same height, two sides of the high-elasticity return plate are connected with the fixed plate, the middle part of the high-elasticity return plate protrudes leftwards to form an outer convex cavity, and a laser beam reflected by the reflecting mirror is positioned in the outer convex cavity;
The right end of the second pushing block is provided with a hemispherical groove for installing a balance ball, a balance ball connecting rod is vertically arranged in the hemispherical groove, the balance ball is rotatably embedded in the hemispherical groove through the balance ball connecting rod, at least one part of the balance ball is exposed out of the spherical groove, the part of the balance ball exposed out of the spherical groove is abutted against the outer convex surface of the high-elasticity recovery plate, the inner side of the outer convex surface is also provided with a pressure strain gauge, and the optical path of the laser beam does not pass through the pressure strain gauge; the optical axis of the laser beam reflected by the reflecting mirror and the spherical center of the balance ball are positioned on the same parallel line;
the sample holder apparatus includes: the two ends of the sample groove along the length direction of the sample groove are provided with sample clamp fixing plates oppositely; the sample fixture fixing plate is in an inverted L shape, the vertical edge of the sample fixture fixing plate is vertically fixed on the third supporting plate, the transverse edge of the fixture fixing plate is vertically provided with a fixing bolt, and the fixing bolt penetrates through the transverse edge of the fixture fixing plate to lock a sample below in the sample groove;
the control and data acquisition device comprises: the laser vibration data acquisition device is electrically connected with the laser transmitter and the pressure strain gauge respectively, and the digital motion controller is electrically connected with the actuator.
Further, a ball groove is formed in the middle of the bottom surface of the third supporting plate along the length direction of the bottom surface of the third supporting plate, third balls are arranged in the ball groove, and the third balls slide along the ball groove.
The beneficial effects of the invention are as follows: 1) Easy to realize in laboratory, simple to operate, less affected factors by environment. 2) Can generate high-precision micro-displacement and has high measurement displacement resolution. 3) The self-balancing force measuring device has a self-balancing function, force transmitted by the pushing block can eliminate the phenomenon of unbalanced force at two ends through the balancing ball, and the accuracy of the measured resultant force can be greatly improved. 4) Low cost and good economical efficiency.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a front view of the micro-motion displacement generating device of the present invention.
Fig. 3 is a plan view of the fine movement displacement generating device of the present invention.
Fig. 4 is a front view of the laser ranging and resultant force measuring apparatus of the present invention.
Fig. 5 is a schematic partial cutaway view of a laser ranging and resultant force measuring device of the present invention.
Fig. 6 is a top view of the laser ranging and resultant force measuring apparatus of the present invention.
Fig. 7 is a top view of the displacement conduction device of the present invention.
Fig. 8 is a front view of the displacement conduction device of the present invention.
Fig. 9 is a cross-sectional view taken along A-A in fig. 8.
Reference numerals illustrate: 1. a micro-motion displacement generating device; 2. a laser ranging and resultant force measuring device; 3. a displacement conduction device; 4. a sample holder device; 5. a control and data acquisition device; 101. an actuator fixing case upper cover; 102. an actuator push head; 103. a first bolt; 104. a second bolt; 105. a third bolt; 106. a fourth bolt; 107. a fifth bolt; 108. a sixth bolt; 109. a seventh bolt; 110. an eighth bolt; 111. a ninth bolt; 112. an actuator; 201. a laser emitter; 202. a laser emitter support; 203. a high elastic return plate; 204. a pressure strain gage; 205. a balance ball connecting rod; 206. a balance ball; 207. a fixing plate; 208. a reflecting mirror; 301. a first support plate; 302. a second support plate; 303. a third support plate; 304. a first push block; 305. a second push block; 306. a sample tank; 307. a push plate; 308. an actuator fixing case; 309. a second ball; 401. a first sample holder fixing plate; 402. a second sample holder fixing plate; 403. a fixing bolt; 501. a laser vibration data collector; 502. a digital motion controller.
Detailed Description
The invention will be further described with reference to the following specific examples, but the scope of the invention is not limited thereto:
referring to the drawings, a high-precision micro-motion displacement generating device is characterized in that: the device comprises a micro-motion displacement generating device 1, a laser ranging and resultant force measuring device 2, a displacement conducting device 3, a sample clamp device 4 and a control and data acquisition device 5;
The displacement conduction device comprises: three parallel-arranged first, second and third support plates 301, 302, 303, the first support plate 301 having a length greater than the length of the second support plate 302, the second support plate 302 having a length greater than the length of the third support plate 303; the first support plate 301 is horizontally arranged on the test bed, first guide rails are arranged on two sides of the first support plate 301 along the length direction of the first support plate, and the second support plate 302 is slidably arranged in the first support plate 301 through first balls; the second support plate 302 is provided with second guide rails at both sides along a length direction thereof, and the third support plate 303 is slidably disposed in the second support plate 302 by means of second balls 309; the third support plate 303 is provided with a first push block 304 and a second push block 305 along the left and right ends of the length direction thereof, and the left and right ends of the second support plate along the length direction thereof are provided with a micro-motion displacement generating device 1 and a laser ranging and resultant force measuring device 2; the left end of the first push block 304 is fixedly connected with the micro-motion displacement generating device 1, and the right end of the second push block 305 is abutted with the laser ranging and resultant force measuring device 2; a sample groove 306 for placing a sample is formed in the middle of the third support plate 303; a ball groove is formed in the middle of the bottom surface of the third support plate 303 along the length direction of the bottom surface, a third ball is arranged in the ball groove, and the third ball slides along the ball groove; the micro-motion displacement generating device 1, the sample groove 306 and the laser ranging and resultant force measuring device 2 are positioned on the same parallel line;
The fine movement displacement generating device 1 includes: the actuator fixing box 308, the actuator fixing box 308 is of a hollow square structure with an open top, the actuator fixing box upper cover 101 is horizontally arranged at the top of the actuator fixing box 308, and the push plate 307 is horizontally arranged at the bottom of the actuator fixing box upper cover; the front and rear side walls of the actuator fixing case 308 are provided with a first slot for installing the actuator fixing case upper cover 101 and a second slot for installing the push plate 307, the left ends of the first slot and the second slot are respectively opened, the actuator fixing case upper cover 101 and the push plate 307 are respectively inserted into the actuator fixing case 308 from corresponding openings, the left ends of the actuator fixing case upper cover 101 and the push plate are respectively provided with a handle, and the actuator fixing case upper cover 101 is also provided with an outlet for connecting the actuator 112; the upper surface of the push plate 307 is provided with an actuator 112; the front side wall, the rear side wall and the left side wall of the actuator fixing box 308 and the upper cover 101 of the actuator fixing box are respectively provided with a screw hole for a bolt to pass through, the bolts are installed in the screw holes and extend into the actuator fixing box 308 through the screw holes to lock the actuator 112, wherein the front side wall of the actuator fixing box 308 is provided with a fourth bolt 106 and a fifth bolt 107, the rear side wall is provided with an eighth bolt 110 and a ninth bolt 111, the left side wall is provided with a third bolt 105, and the upper cover 101 of the actuator fixing box is provided with a first bolt 103 and a second bolt 104; an output shaft of the actuator 112 is connected with the actuator push head 102, and the right end of the actuator push head 102 penetrates through the actuator fixing box 308 and is fixedly connected with the first push block 304 through a sixth bolt 108;
The laser ranging and resultant force measuring device 2 includes: a fixing plate vertically arranged on the second supporting plate 302, wherein the top end of the fixing plate 207 is provided with a laser emitter bracket, and the laser emitter bracket 202 is provided with a laser emitter 201; the laser beam emitted by the laser emitter 201 is vertically downward, and a reflecting mirror 208 is arranged below the laser beam; the mirror 208 is fixed at the left end of the fixing plate 207, and the laser beam reflected by the mirror 208 becomes horizontal to the left; the left end of the fixing plate 207 is also vertically provided with a high-elasticity return plate 203, the high-elasticity return plate 203 and the reflecting mirror 208 are positioned at the same height, two sides of the high-elasticity return plate 203 are connected with the fixing plate 207, the middle part of the high-elasticity return plate is protruded leftwards to form an outer protruding cavity, and the laser beam reflected by the reflecting mirror 208 is positioned in the outer protruding cavity;
The right end of the second pushing block 305 is provided with a hemispherical groove for installing the balance ball 206, the hemispherical groove is vertically provided with a balance ball connecting rod 205, the balance ball 206 is rotatably embedded in the hemispherical groove through the balance ball connecting rod 205, at least a part of the balance ball 206 is exposed out of the spherical groove, the part of the balance ball 206 exposed out of the spherical groove is abutted with the outer convex surface of the high-elasticity recovery plate 203, the inner side of the outer convex surface is also provided with a pressure strain gauge 204, and the optical path of the laser beam does not pass through the pressure strain gauge 204; the optical axis of the laser beam reflected by the reflecting mirror 208 and the sphere center of the balance ball 206 are located on the same parallel line;
The sample holder device 4 includes: the first sample holder fixing plate 401 and the second sample holder fixing plate 402 have the same structure, and the first sample holder fixing plate 401 and the second sample holder fixing plate 402 are provided at left and right ends of the sample groove 306 in the longitudinal direction thereof; the first sample fixture fixing plate 401 is in an inverted L shape, the vertical edge of the first sample fixture fixing plate 401 is vertically fixed on the third supporting plate 303, the transverse edge of the first sample fixture fixing plate 401 is vertically provided with a fixing bolt 403, and the fixing bolt 403 penetrates through the transverse edge of the first sample fixture fixing plate 401 to lock a sample below in the sample groove 306;
The control and data acquisition device 5 comprises: the laser vibration data collector 501 and the digital motion controller 502 are respectively electrically connected with the laser transmitter 201 and the pressure strain gauge 204, and the digital motion controller 502 is electrically connected with the actuator 112.
The working process and principle of the high-precision micro-motion displacement generating device are briefly described below:
When an experiment is to be performed, after the test piece is mounted in the sample cell 306, the test piece is completely fixed inside the sample cell 306 by the fixing bolts 403 of the sample holder device 4. The laser distance measuring and resultant force measuring device 2 and the micro-motion displacement generating device 1 are turned on to conduct a preliminary experiment. The actuator 112 is manipulated by the digital motion controller 502 to bring the balance ball 206 into contact with the highly elastic return plate 203, and the laser vibration data collector 501 is adjusted so that the displacement at this time becomes zero and the resultant force becomes zero. And adjusting the instrument to start a formal experiment.
The embodiments described in the present specification are merely examples of implementation forms of the inventive concept, and the scope of protection of the present invention should not be construed as being limited to the specific forms set forth in the embodiments, and the scope of protection of the present invention and equivalent technical means that can be conceived by those skilled in the art based on the inventive concept.
Claims (1)
1. A high-precision micro-motion displacement generating device is characterized in that: the device comprises a micro-motion displacement generating device, a laser ranging and resultant force measuring device, a displacement conduction device, a sample clamp device and a control and data acquisition device;
The displacement conduction device comprises: the three first support plates, the second support plates and the third support plates are arranged in parallel, the length of the first support plate is larger than that of the second support plate, and the length of the second support plate is larger than that of the third support plate; the first support plate is horizontally arranged on the test bed, first guide rails are arranged on two sides of the first support plate along the length direction of the first support plate, and the second support plate is slidably arranged in the first support plate through first balls; the two sides of the second supporting plate are provided with second guide rails along the length direction of the second supporting plate, and the third supporting plate is slidably arranged in the second supporting plate through second balls; the left end and the right end of the third support plate along the length direction are oppositely provided with a first push block and a second push block, and the left end and the right end of the second support plate along the length direction are oppositely provided with a micro-motion displacement generating device and a laser ranging and resultant force measuring device; the left end of the first push block is fixedly connected with the micro-motion displacement generating device, and the right end of the second push block is abutted with the laser ranging and resultant force measuring device; a sample groove for placing a sample is formed in the middle of the third supporting plate; the micro-motion displacement generating device, the sample tank and the laser ranging and resultant force measuring device are positioned on the same parallel line;
The micro-motion displacement generating device includes: the actuator fixing box is of a hollow square structure with an open top, an upper cover of the actuator fixing box is horizontally arranged at the top of the actuator fixing box, and a push plate is horizontally arranged at the bottom of the actuator fixing box; the front side wall and the rear side wall of the actuator fixing box are provided with a first slot for installing an upper cover of the actuator fixing box and a second slot for installing a push plate, the left ends of the first slot and the second slot are respectively opened, the upper cover of the actuator fixing box and the push plate are respectively inserted into the actuator fixing box from corresponding openings, the left ends of the upper cover of the actuator fixing box and the push plate are respectively provided with a handle, and the upper cover of the actuator fixing box is also provided with an outlet for connecting an actuator; the upper surface of the push plate is provided with an actuator, the front side wall, the rear side wall and the left side wall of the actuator fixing box and the upper cover of the actuator fixing box are respectively provided with a screw hole for a bolt to pass through, and the bolt is arranged in the screw hole and extends into the actuator fixing box through the screw hole to lock the actuator; the front side wall of the actuator fixing box is provided with a fourth bolt and a fifth bolt, the rear side wall of the actuator fixing box is provided with an eighth bolt and a ninth bolt, the left side wall of the actuator fixing box is provided with a third bolt, and the upper cover of the actuator fixing box is provided with a first bolt and a second bolt; an output shaft of the actuator is connected with an actuator push head, and the right end of the actuator push head penetrates through the actuator fixing box and is fixedly connected with the first push block through a sixth bolt;
The laser ranging and resultant force measuring device includes: the fixing plate is vertically arranged on the second supporting plate, the top end of the fixing plate is provided with a laser emitter bracket, and the laser emitter bracket is provided with a laser emitter; the laser beam emitted by the laser emitter is vertically downward, and a reflecting mirror is arranged below the laser beam; the reflecting mirror is fixed at the left end of the fixed plate, and the laser beam reflected by the reflecting mirror becomes horizontal left; the left end of the fixed plate is also vertically provided with a high-elasticity return plate, the high-elasticity return plate and the reflecting mirror are positioned at the same height, two sides of the high-elasticity return plate are connected with the fixed plate, the middle part of the high-elasticity return plate protrudes leftwards to form an outer convex cavity, and a laser beam reflected by the reflecting mirror is positioned in the outer convex cavity;
The right end of the second pushing block is provided with a hemispherical groove for installing a balance ball, a balance ball connecting rod is vertically arranged in the hemispherical groove, the balance ball is rotatably embedded in the hemispherical groove through the balance ball connecting rod, at least one part of the balance ball is exposed out of the spherical groove, the part of the balance ball exposed out of the spherical groove is abutted against the outer convex surface of the high-elasticity recovery plate, the inner side of the outer convex surface is also provided with a pressure strain gauge, and the optical path of the laser beam does not pass through the pressure strain gauge; the optical axis of the laser beam reflected by the reflecting mirror and the spherical center of the balance ball are positioned on the same parallel line;
The sample holder apparatus includes: the two ends of the sample groove along the length direction of the sample groove are provided with sample clamp fixing plates oppositely; the sample fixture fixing plate is in an inverted L shape, the vertical edge of the sample fixture fixing plate is vertically fixed on the third supporting plate, the transverse edge of the fixture fixing plate is vertically provided with a fixing bolt, and the fixing bolt penetrates through the transverse edge of the sample fixture fixing plate to lock a sample below in the sample groove;
The control and data acquisition device comprises: the laser vibration data acquisition device is electrically connected with the laser transmitter and the pressure strain gauge respectively, and the digital motion controller is electrically connected with the actuator; a ball groove is formed in the middle of the bottom surface of the third supporting plate along the length direction of the third supporting plate, a third ball is arranged in the ball groove, and the third ball slides along the ball groove; the test piece is arranged in the sample tank, and the sample is completely fixed in the sample tank through a fixing bolt of the sample fixture device;
The digital motion controller operates the actuator to enable the balance ball to be in contact with the high-elasticity recovery plate, and the laser vibration data collector is adjusted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911237820.1A CN110853697B (en) | 2019-12-06 | 2019-12-06 | High-precision micro-motion displacement generating device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911237820.1A CN110853697B (en) | 2019-12-06 | 2019-12-06 | High-precision micro-motion displacement generating device |
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| CN110853697A CN110853697A (en) | 2020-02-28 |
| CN110853697B true CN110853697B (en) | 2024-05-03 |
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| CN201911237820.1A Active CN110853697B (en) | 2019-12-06 | 2019-12-06 | High-precision micro-motion displacement generating device |
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| CN103063530A (en) * | 2012-08-16 | 2013-04-24 | 南京航空航天大学 | Micro-movement friction and abrasion testing machine |
| CN203561566U (en) * | 2013-05-12 | 2014-04-23 | 南京神源生智能科技有限公司 | Reciprocation type micro-motion friction abrasion tester |
| CN106950137A (en) * | 2017-03-22 | 2017-07-14 | 西安建筑科技大学 | Tangential fretting abrasion test device and test method |
| CN109507058A (en) * | 2018-12-14 | 2019-03-22 | 贵州大学 | A kind of reciprocating fretting apparatus |
| CN110146397A (en) * | 2019-05-24 | 2019-08-20 | 西北工业大学 | One kind being bolted interface micro-moving frictional wear test device and its method |
| CN110320125A (en) * | 2019-08-16 | 2019-10-11 | 贵州大学 | A kind of horizontal mobile device for reciprocating corrosion fretting apparatus |
| CN110320126A (en) * | 2019-08-16 | 2019-10-11 | 贵州大学 | A kind of vertical loading device for reciprocating corrosion fretting apparatus |
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2019
- 2019-12-06 CN CN201911237820.1A patent/CN110853697B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103063530A (en) * | 2012-08-16 | 2013-04-24 | 南京航空航天大学 | Micro-movement friction and abrasion testing machine |
| CN203561566U (en) * | 2013-05-12 | 2014-04-23 | 南京神源生智能科技有限公司 | Reciprocation type micro-motion friction abrasion tester |
| CN106950137A (en) * | 2017-03-22 | 2017-07-14 | 西安建筑科技大学 | Tangential fretting abrasion test device and test method |
| CN109507058A (en) * | 2018-12-14 | 2019-03-22 | 贵州大学 | A kind of reciprocating fretting apparatus |
| CN110146397A (en) * | 2019-05-24 | 2019-08-20 | 西北工业大学 | One kind being bolted interface micro-moving frictional wear test device and its method |
| CN110320125A (en) * | 2019-08-16 | 2019-10-11 | 贵州大学 | A kind of horizontal mobile device for reciprocating corrosion fretting apparatus |
| CN110320126A (en) * | 2019-08-16 | 2019-10-11 | 贵州大学 | A kind of vertical loading device for reciprocating corrosion fretting apparatus |
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| CN110853697A (en) | 2020-02-28 |
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