CN109612864A - A kind of sliding friction fatigue experimental device for rotary bending fatigue machine - Google Patents
A kind of sliding friction fatigue experimental device for rotary bending fatigue machine Download PDFInfo
- Publication number
- CN109612864A CN109612864A CN201811527584.2A CN201811527584A CN109612864A CN 109612864 A CN109612864 A CN 109612864A CN 201811527584 A CN201811527584 A CN 201811527584A CN 109612864 A CN109612864 A CN 109612864A
- Authority
- CN
- China
- Prior art keywords
- fatigue
- sliding friction
- testing specimen
- rotary bending
- support frame
- 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.)
- Granted
Links
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
- G01N3/56—Investigating resistance to wear or abrasion
-
- 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
- G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating 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
- G01N2203/0001—Type of application of the stress
- G01N2203/0005—Repeated or cyclic
- G01N2203/0007—Low frequencies up to 100 Hz
-
- 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
- G01N2203/0023—Bending
-
- 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
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0073—Fatigue
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 present invention relates to a kind of sliding friction fatigue experimental devices for rotary bending fatigue machine, the device is fixed in rotary bending fatigue machine, and fatigue testing specimen (8) is clamped between the main shaft fixture (13) of rotary bending fatigue machine and loads fixture (14), described device includes support frame (7), it is fixed at the sliding friction forcing unit and data acquisition unit of the load that is used to be in contact to fatigue testing specimen (8) application method on support frame (7), the fatigue testing specimen (8) passes through support frame (7), the sliding friction forcing unit includes two groups, it is symmetricly set on the two sides of fatigue testing specimen (8), two groups of sliding friction forcing units it is linearly vertical with the axis direction of fatigue testing specimen (8).Compared with prior art, simple structure of the present invention, easy to operate, adaptable, and test effect is good, provides effective means to study the coupling of fatigue load and Wear Behavior.
Description
Technical field
The present invention relates to Material Testing Technology fields, and in particular to a kind of sliding friction for rotary bending fatigue machine is tired
Labor experimental rig.
Background technique
Tribo_fatigue is significant in process industry, in the operational process of mechanical system, inevitably
Alternative cycle load is transmitted simultaneously under the friction conditions such as sliding, rolling, impact, abrasion can reduce constitutional detail and material
Fatigue limit, so that the serious lesion ribbon of mechanical component be caused to carry out significant damage.For example, the shaft coupling with fixed or movable cooperation
It, all can be because of in the systems such as section, the crank-pin with sliding bearing, propeller shaft, gear, bearing, cam, wheel track and casing blade
Friction side effect substantially reduces the fatigue life of coupled system.This fatigue under scrubbing effect will cause material peeling, form pit,
It is set to generate noise, abrasion, vibration and temperature rise at work, so as to cause failure, therefore fatigue under scrubbing performance is these keys
The important technology index of components material.Pluralistic theory research association simplifies research object, such as gear, bearing etc. zero
The feature of component contact belongs to the operational mode of rolling or sliding, therefore is usually to go forward side by side to the transformation of existing fatigue experimental device
Row theory analysis.Currently, more fatigue under scrubbing theoretical research focuses mostly in rolling contact fatigue and fretting fatigue, and to sliding
The rare research of the experimental rig of friction contact fatigue mode.
The research of tribo_fatigue is built upon on the basis of composite testing mostly at present, by testing intuitively
Performance parameter variations rule of the material under abrasion and tired compound action is obtained, also can be carried out according to the germinating of crackle and extension
The coupling analysis of amechanical angle mechanism of action, these all provide for the operating mechanism in fatigue under scrubbing coupling process qualitative and quantitative
Foundation.Sliding friction abrasion and fatigue failure widely exist in all kinds of mechanical components, how to treat simultaneously quantitative analysis friction
It is extremely important for wearing with the failure regularity and the mechanism of action of the coupling of fatigue and material, it is therefore desirable to a large amount of reason
It is that practical make of engineering instructs to occur to avoid major accident research fretting wear and tired complex act with great by research
Practical significance.
Summary of the invention
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide a kind of experimental result is reliable
The sliding friction fatigue experimental device for rotary bending fatigue machine.
The purpose of the present invention can be achieved through the following technical solutions: a kind of sliding for rotary bending fatigue machine rubs
Fatigue experimental device is wiped, which is fixed in rotary bending fatigue machine, and fatigue testing specimen is clamped in rotary bending fatigue
Between the main shaft fixture and loads fixture of machine, described device include support frame, fixed setting on the support frame for fatigue
Sample applies method and is in contact the sliding friction forcing unit and data acquisition unit of load, and the fatigue testing specimen passes through support
Frame, the sliding friction forcing unit include two groups, are symmetricly set on the two sides of fatigue testing specimen, two groups of sliding friction forcing units
It is linearly vertical with the axis direction of fatigue testing specimen.
The two sides of support frame as described above are equipped with through-hole, and the through-hole is equipped with internal screw thread in the outer part, and the sliding friction is applied
Power unit includes the loading bolt set gradually from outside to inside, spring, gasket, miniature weighing sensor and contacts test block, described
Loading bolt is spirally connected in through-holes, and is kept fixed by loading fixture nut, and the contact test block abuts simultaneously with fatigue testing specimen
Apply method to fatigue testing specimen to be in contact load.Extruding is screwed in and generated using loading bolt, and gasket processes diameter slightly larger than described
Miniature weighing sensor diameter, to keep it to be vertically stably placed in the smooth hole of support frame as described above and detect well
With the normal direction contact force of the fatigue testing specimen perpendicular contact.
The top of the contact test block is hemispherical, and forms point contact with fatigue testing specimen surface.
The data acquisition unit is weighing instrument, and the weighing instrument is connect with miniature weighing sensor.
Before test starts, it is symmetrically positioned in the sliding friction forcing unit of fatigue testing specimen two sides, two miniature weighings
Sensor reading is identical.Device can load fatigue testing specimen vertical symmetry, guarantee two miniature weighing sensor readings before testing
It is identical, to guarantee that two loading bolts keep two magnitudes of load equal, then fixed with load fixture nut.
The bottom of support frame as described above is fixed, the magnetic bases by Stud connection magnetic bases by fixture nut
It is magnetically coupled in rotary bending fatigue machine.The position of the adjustable support frame of the setting and height, rub so as to adjust sliding
Position and the height for wiping forcing unit (mainly contact test block), so that fatigue testing specimen axially can just when passing through support frame
It is vertical with contact test block, and contact point is located at fatigue testing specimen half height.
Before test, the fatigue testing specimen of infundibulate rotoflector is cleaned by ultrasonic, will be tried by the fatigue of ultrasonic cleaning
Sample is clamped on the main shaft fixture and loads fixture of rotary bending tester, adjust concentricity and hang load counterweight apply it is curved
Qu Zaihe, fatigue testing specimen can generate certain amount of deflection under load effect.
Miniature weighing sensor is connect zeroing with weighing instrument, test block, miniature weighing sensor, pad will be contacted respectively
Each two, piece, spring are symmetrically put into the through-hole of support frame, and by the connecting line of miniature weighing sensor by drawing in through-hole.
Two loading bolts are symmetrically screwed in through-hole.Sliding friction force application apparatus is connect using stud with magnetic bases, it will be magnetic
Pedestal is fixed on the workbench of rotary bending tester, and adjusting height makes to contact test block front end hemispherical center and fatigue
Sample center is fixed on sustained height and using fixture nut.Loading bolt is screwed in, contact load is adjusted according to weighing instrument
Size simultaneously keeps equal, is fixed using load fixture nut.
Rotary bending tester is opened, fatigue testing specimen is rotated under flexural fatigue Cyclic Load, rotates through
Cheng Zhongyu contacts the opposite sliding of test block, forms sliding friction and fatigue test condition.
Compared with prior art, the beneficial effects of the present invention are embodied in following several respects:
The first, the experimental rig and test method are developed based on original rotary bending fatigue machine, low in cost, behaviour
Facilitate, the complicated mechanical component method of operation can be but provided, couples fatigue with sliding friction, it is tired to rub
The theoretical research of labor provides help.
The second, different speeds, cyclic loading, contact load and different contact test block materials can be chosen, is tried
It is wider to test range.
Third, the high stability of test, with fatigue testing specimen rub tenon damage during changes of section, contact load according to
It is old to be applied.
4th, the sliding friction fatigue experimental device in the invention and test method are simple and reliable for structure, easy to implement, energy
Enough couplings for meeting complicated sliding friction and fatigue, are conducive to laboratory and carry out operating condition theoretical research and material property point
Analysis.
Detailed description of the invention
Fig. 1 is sliding friction fatigue experimental device stereoscopic schematic diagram of the clamping on rotary bending tester；
Fig. 2 is sliding friction fatigue experimental device exploded view；
Fig. 3 is the sectional view of sliding friction fatigue experimental device；
Fig. 4 is the enlarged drawing for contacting test block.
Wherein, 1 is loading bolt, and 2 be load fixture nut, and 3 be spring, and 4 be gasket, and 5 be miniature weighing sensor, 6
To contact test block, 7 be support frame, and 8 be fatigue testing specimen, and 9 be stud, and 10 be fixture nut, and 11 be magnetic bases, and 12 be weighing instrument
Table, 13 have for main axle clamp, and 14 be loads fixture.
Specific embodiment
It elaborates below to the embodiment of the present invention, the present embodiment carries out under the premise of the technical scheme of the present invention
Implement, the detailed implementation method and specific operation process are given, but protection scope of the present invention is not limited to following implementation
Example.
Embodiment 1
A kind of sliding friction fatigue experimental device for rotary bending fatigue machine, structure is as shown in Figures 1 to 3, including
Support frame 7 is made of loading bolt 1, load fixture nut 2, spring 3, gasket 4, miniature weighing sensor 5 and contact test block 6
Sliding friction forcing unit, weighing instrument 12 and stud 9, fixture nut 10, magnetic bases 11, this sliding friction fatigue
Experimental rig can be placed and is stabilized on rotary bending tester, with rotary bending tester main shaft fixture 13 and add
The fatigue testing specimen 8 for having born flexural fatigue load for carrying 14 clamping of fixture is maintained on sustained height, symmetrically to fatigue testing specimen 8
Apply normal direction contact load.
Wherein, support frame 7 is provided with symmetrical through-hole, and close to it is external be threaded hole, close to central part be roughness very
Low smooth hole, with the friction consumption during reduction test when load transmission.7 top of support frame is provided with symmetrical channels, to complete
The cabling of the miniature weighing sensor 5.Support frame bottom is provided with threaded hole, is connect by stud 9 with magnetic bases 11, and lead to
It crosses fixture nut 10 to be kept fixed, to complete the connection with rotary bending fatigue machine worktable.
Contact test block 6, miniature weighing sensor 5, gasket 4, spring 3 are successively arranged in order in smooth hole, using adding
Bolt 1 is carried to screw in and generate extruding.Contact 6 front end of test block is hemispherical, as shown in figure 4, forming point contact item with fatigue testing specimen 8
Part, bottom processing is smooth, with miniature 5 parallel contact of weighing sensor.Gasket 4 processes diameter and is slightly larger than the miniature title
The diameter of sensor 5 is retransmitted, is tried with keeping it to be vertically stably placed in the smooth hole of support frame 7 and detecting well with fatigue
The normal direction contact force of 8 perpendicular contact of sample.Sliding friction forcing unit can load fatigue testing specimen vertical symmetry, adjust loading bolt
1 keeps two magnitudes of load equal and is fixed with load fixture nut 2.
The test method of the sliding friction fatigue of rotary bending fatigue machine of the invention are as follows:
Before test, infundibulate rotary bending fatigue sample is cleaned by ultrasonic, by the fatigue testing specimen by ultrasonic cleaning
It is clamped on the main shaft fixture 13 and loads fixture 14 of rotary bending tester, and main shaft fixture 13 and rotoflector is tired
The motor of labor machine assembles, and hangs weights adjustment concentricity and applies bending load in 14 end of loads fixture extension load counterweight,
The fatigue testing specimen 8 of cantilever clamping can generate certain amount of deflection under bending load effect.
Miniature weighing sensor 5 is connect and returned to zero with weighing instrument 12, test block 6, miniature weighing and sensing will be contacted respectively
Device 5, gasket 4,3 each two, spring symmetrically and perpendicular to horizontal plane be put into the smooth hole of support frame 7, and by miniature weighing
The connecting line of sensor 5 is drawn out of slot.
Sliding friction force application apparatus is connect using stud 9 with magnetic bases 11, it is curved that magnetic bases 11 are fixed on rotation
On the workbench of bent fatigue tester, adjusting height makes to contact 6 front end hemispherical center of test block with fatigue testing specimen center same
It is in height and fixed using fixture nut 10.Loading bolt 1 is screwed in, contact load size is adjusted according to weighing instrument 12 and is kept
It is equal, it is fixed using load fixture nut 2.
Rotary bending tester is opened, makes fatigue testing specimen under flexural fatigue Cyclic Load with the frequency of 30Hz
Keep rotation, contact at this time test block 6 and fatigue testing specimen 8 due to normal direction contact force and it is lasting generate frictional force with respect to sliding,
So that coupling of the sample by fatigue and cyclic load and friction abrasion, forms the experimental condition of sliding friction fatigue, research
Sliding friction abrasion is to the fatigue limit reduction effect of material and operating mechanism.
Claims (6)
1. a kind of sliding friction fatigue experimental device for rotary bending fatigue machine, it is tired which is fixed at rotoflector
In labor machine, and fatigue testing specimen (8) is clamped between the main shaft fixture (13) of rotary bending fatigue machine and loads fixture (14), special
Sign is, described device include support frame (7), be fixed on support frame (7) for applying method phase to fatigue testing specimen (8)
The sliding friction forcing unit and data acquisition unit of contact load, the fatigue testing specimen (8) passes through support frame (7), described
Sliding friction forcing unit includes two groups, is symmetricly set on the two sides of fatigue testing specimen (8), two groups of sliding friction forcing units are in
Straight line is vertical with the axis direction of fatigue testing specimen (8).
2. a kind of sliding friction fatigue experimental device for rotary bending fatigue machine according to claim 1, feature
It is, the two sides of support frame as described above (7) are equipped with through-hole, and the through-hole is equipped with internal screw thread in the outer part, and the sliding friction is applied
Power unit includes the loading bolt (1) set gradually from outside to inside, spring (3), gasket (4), miniature weighing sensor (5) and connects
It touches test block (6), the loading bolt (1) is spirally connected in through-holes, and is kept fixed by loading fixture nut (2), the contact
Test block (6) is abutted with fatigue testing specimen (8) and is in contact load to fatigue testing specimen (8) application method.
3. a kind of sliding friction fatigue experimental device for rotary bending fatigue machine according to claim 2, feature
It is, the top of contact test block (6) is hemispherical, and forms point contact with fatigue testing specimen (8) surface.
4. a kind of sliding friction fatigue experimental device for rotary bending fatigue machine according to claim 2, feature
It is, the data acquisition unit is weighing instrument (12), and the weighing instrument (12) connect with miniature weighing sensor (5).
5. a kind of sliding friction fatigue experimental device for rotary bending fatigue machine according to claim 4, feature
It is, before test starts, is symmetrically positioned in the sliding friction forcing unit of fatigue testing specimen (8) two sides, two miniature weighings
Sensor (5) reading is identical.
6. a kind of sliding friction fatigue experimental device for rotary bending fatigue machine according to claim 1, feature
It is, the bottom of support frame as described above (7) is fixed by stud (9) connection magnetic bases (11), and by fixture nut (10), institute
Magnetic bases (11) are stated to be magnetically coupled in rotary bending fatigue machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811527584.2A CN109612864B (en) | 2018-12-13 | 2018-12-13 | Sliding friction fatigue test device for rotary bending fatigue machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811527584.2A CN109612864B (en) | 2018-12-13 | 2018-12-13 | Sliding friction fatigue test device for rotary bending fatigue machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109612864A true CN109612864A (en) | 2019-04-12 |
| CN109612864B CN109612864B (en) | 2021-03-26 |
Family
ID=66007544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811527584.2A Active CN109612864B (en) | 2018-12-13 | 2018-12-13 | Sliding friction fatigue test device for rotary bending fatigue machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109612864B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111707539A (en) * | 2020-06-22 | 2020-09-25 | 中国人民解放军空军工程大学 | Test fixture for applying compressive stress to plate and using method thereof |
| CN114018732A (en) * | 2021-11-03 | 2022-02-08 | 北京理工大学 | Rolling fretting fatigue test device and test method |
| CN115493951A (en) * | 2021-06-18 | 2022-12-20 | 东北大学 | Multifunctional friction wear fatigue coupling test device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51140679A (en) * | 1975-05-29 | 1976-12-03 | Komatsu Ltd | Crack detection device for rotary bending tester |
| SU920454A1 (en) * | 1980-07-16 | 1982-04-15 | Куйбышевское Агрегатное Производственно-Конструкторское Объединение | Device for automatic unloading of fatigue tester rotating specimen |
| CN102103056A (en) * | 2011-03-18 | 2011-06-22 | 西南交通大学 | Proportional test device for rotating bending fatigue of train wheel axle |
| CN104181031A (en) * | 2014-09-09 | 2014-12-03 | 西南交通大学 | Point contact type fretting fatigue test device and point contact type fretting fatigue test method |
| CN105675412A (en) * | 2016-01-14 | 2016-06-15 | 西南交通大学 | Bending fretting fatigue experimental equipment and experimental method |
| CN107796717A (en) * | 2017-11-27 | 2018-03-13 | 中国航空综合技术研究所 | Rotary bending fatigue detection means and rotary bending fatigue test method |
-
2018
- 2018-12-13 CN CN201811527584.2A patent/CN109612864B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51140679A (en) * | 1975-05-29 | 1976-12-03 | Komatsu Ltd | Crack detection device for rotary bending tester |
| SU920454A1 (en) * | 1980-07-16 | 1982-04-15 | Куйбышевское Агрегатное Производственно-Конструкторское Объединение | Device for automatic unloading of fatigue tester rotating specimen |
| CN102103056A (en) * | 2011-03-18 | 2011-06-22 | 西南交通大学 | Proportional test device for rotating bending fatigue of train wheel axle |
| CN104181031A (en) * | 2014-09-09 | 2014-12-03 | 西南交通大学 | Point contact type fretting fatigue test device and point contact type fretting fatigue test method |
| CN105675412A (en) * | 2016-01-14 | 2016-06-15 | 西南交通大学 | Bending fretting fatigue experimental equipment and experimental method |
| CN107796717A (en) * | 2017-11-27 | 2018-03-13 | 中国航空综合技术研究所 | Rotary bending fatigue detection means and rotary bending fatigue test method |
Non-Patent Citations (2)
| Title |
|---|
| T NAGAO ET AL.: "《BEHAVIOR OF MEDIUM CARBON STEEL UNDER COMBINED FATIGUE AND WEAR》", 《WEAR》 * |
| 张晓化 等.: "《TiN/Ti镀层对Ti811合金常规疲劳和高温微动疲劳抗力的影响》", 《第十四届全国疲劳与断裂学术会议》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111707539A (en) * | 2020-06-22 | 2020-09-25 | 中国人民解放军空军工程大学 | Test fixture for applying compressive stress to plate and using method thereof |
| CN115493951A (en) * | 2021-06-18 | 2022-12-20 | 东北大学 | Multifunctional friction wear fatigue coupling test device |
| CN115493951B (en) * | 2021-06-18 | 2024-08-23 | 东北大学 | Multifunctional friction wear fatigue coupling test device |
| CN114018732A (en) * | 2021-11-03 | 2022-02-08 | 北京理工大学 | Rolling fretting fatigue test device and test method |
| CN114018732B (en) * | 2021-11-03 | 2024-04-05 | 北京理工大学 | Rolling fretting fatigue test device and test method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109612864B (en) | 2021-03-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102331370B (en) | In-situ high-frequency fatigue material mechanical test platform under scanning electron microscope based on stretching/compressing mode | |
| CN109612864A (en) | A kind of sliding friction fatigue experimental device for rotary bending fatigue machine | |
| CN103900813B (en) | The measurement mechanism of a kind of ball screw turns inertia and moment of friction | |
| CN203231962U (en) | End twist friction and abrasion tester for dynamically observing friction interface in real time | |
| CN107703006A (en) | Stretching preloads lower dynamic torsional fatigue Mechanics Performance Testing device | |
| CN102830029B (en) | Micromotion friction ultrasonic vibration long-life fatigue test device | |
| CN107703012B (en) | Variable-temperature indexable micro-nano indentation testing device | |
| CN201191257Y (en) | Portable press fit instrument | |
| CN101441154B (en) | High precision microscopic fatigue tester | |
| CN201364215Y (en) | Friction moment measuring device of bearing under different axial loads and rotating speed | |
| CN102944512A (en) | Test machine and test method for real-time and dynamic observation of end surface torsion friction and abrasion of friction interface | |
| CN202305330U (en) | Mechanics testing platform for in-situ high frequency fatigue materials under scanning electron microscope based on stretching/compressing mode | |
| CN110320126A (en) | A kind of vertical loading device for reciprocating corrosion fretting apparatus | |
| CN108168689B (en) | A kind of line contact roll sliding friction vibration noise testing stand and test analysis method | |
| CN104880308A (en) | Main-shaft axial force isostatic pressing loading device | |
| CN104568619A (en) | Normal loading device of fretting fatigue test system | |
| CN106895972A (en) | A kind of stick-slip experimental rig | |
| CN107063155B (en) | The initial failure of linear displacement transducer excludes experimental rig | |
| CN109556778A (en) | A kind of ball screw assembly, pretightning force on-line monitoring method based on electric current | |
| CN107991045B (en) | Line contact slide frictional vibration noise fest platform | |
| CN105158057A (en) | Apparatus and method for testing in-situ triaxial tension fatigue under multi-field coupling | |
| CN111638126A (en) | Experimental device for testing friction self-excited vibration of rubber material | |
| CN106950137A (en) | Tangential fretting abrasion test device and test method | |
| CN207188296U (en) | A kind of dust arrester of chemical instruments | |
| CN113125151A (en) | Precision lead screw comprehensive performance testing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |