CN206208644U - Constant normal force loading device in fretting fatigue testing - Google Patents
Constant normal force loading device in fretting fatigue testing Download PDFInfo
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- CN206208644U CN206208644U CN201621296502.4U CN201621296502U CN206208644U CN 206208644 U CN206208644 U CN 206208644U CN 201621296502 U CN201621296502 U CN 201621296502U CN 206208644 U CN206208644 U CN 206208644U
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Abstract
The utility model discloses the constant normal force loading device in a kind of fretting fatigue testing, wherein one group of compress gasket is respectively provided with by the radially opposite sides of sample, and pad guide plate is set forms guiding to both sides compress gasket, set Liang Zu pressure holdings mechanism simultaneously carries out pressure holding to the compress gasket of both sides respectively, and the working condition of both sides linear electric motors is controlled by the pressure Value Data that two load cells feed back to controller, so that in the setting range that normal force loaded value keeps in whole process of the test, so as to realize the loading of stabilization.The constant normal force loading device can be used in high-temperature high pressure water or steam, the fatigue test of liquid environment, and the force value lost after being worn and torn between compress gasket and sample is compensated in real time, keep normal force value to obtain constant, greatly increase the precision of experiment.
Description
Technical field
The utility model is related to fatigue rig technical field, more particularly to a kind of suitable for high-temperature high pressure water or steam
Fretting fatigue testing constant normal force loading device in environment.
Background technology
Fine motion（fretting）It is exactly a kind of wear phenomenon occurred in two contact surfaces, has typically occurred in small
, in the contact surface of continuous relative motion, general its displacement amplitude is micron dimension, generally at more than tens to one hundred microns
Between.Fretting fatigue refer to component in the presence of cyclic loading, due to a certain position in surface and other contact surfaces produce it is small
Amplitude causes the phenomenon of component fatigue intensity decreases or early fracture with respect to slip.Fretting fatigue（Fretting Fatigue,
FF）Phenomenon is widely present in the fields such as machinery, traffic, electric power, Aero-Space, or even biomedical engineering, and it can accelerate zero
The fatigue crack initiation of part and extension, so as to substantially reduce service life, or even cause catastrophic failure, therefore fretting damage quilt
Cancer referred to as in industry.Research shows that fine motion can make the fatigue life reduction by 20% ~ 80% of component, even lower.Therefore, it is
The derogatory behaviour of system ground research fretting fatigue and safeguard procedures, with important theory significance and engineering application value.
In fretting fatigue testing, normal force is kept to load steadily in the long term most important, this is quantitatively characterizing fine motion to material
The key of material fatigue life influence.And fretting fatigue normal force loading method conventional at present to be bolt loading or NOL ring add
Carry, the shortcoming of this method is：With experiment carrying out, will be worn and torn between pad and sample, thus cause both it
Between normal force cannot keep constant, can continue to reduce, or even it is zero normal force occur.This method is at normal temperatures and pressures perhaps
The loss for being manually adjusted compensation normal force can be used, but in high temperature high pressure enclosed environment, cannot manually be adjusted
Reorganizing and bringing up to full strength and repay, and manually adjust compensation can not accomplish real-time adjustment.
The utility model aims to solve the problem that the defect of above-mentioned loading device, after real-Time Compensation is worn and torn because of pad and sample and
The force value of loss, keeps the constant of normal force value.
The content of the invention
The purpose of this utility model is to overcome the shortcoming of prior art, there is provided constant in a kind of fretting fatigue testing
Normal direction force loading device.
To reach above-mentioned purpose, the technical solution adopted in the utility model is：A kind of constant method in fretting fatigue testing
To force loading device, being arranged on fretting fatigue testing machine is used to carry out sample normal force loading, and the sample passes through fixture
It is fixedly attached on the main shaft of the fatigue tester, the normal direction force loading device includes being arranged on the different of the sample
Both sides with radially compress respectively the sample two groups of compress gaskets, be respectively used to apply two groups described in compress gasket to compress
The pressure holding mechanism of power, the pressure holding mechanism includes the linear electric motors being installed on the fretting fatigue testing machine support, is fixed in
Pressure self-balancing tensile axis on the motor shaft of the linear electric motors, the power sensing for being fixed in the pressure self-balancing axle shaft end
Device and one end are mutually fixedly connected and with the force snesor for applying the connecting shaft of thrust, the connecting shaft it is another
End is that the normal direction force loading device also includes being capable of basis for pushing the compress gasket to apply the compression end of thrust
The pressure value of force snesor feedback controls the controller of linear electric motors working condition described in two groups described in two groups.
Preferably, the contact end face that the compress gasket is in contact with the sample is arc surface, plane or sphere, both sides
The centerline collineation of the compress gasket and along the sample radial centre lines extend.
Preferably, the normal direction force loading device is also included for providing compress gasket described in two groups with the pad of motion guide
Piece guide plate, the relatively described support of pad guide plate is fixedly disposed, and is offered on the pad guide plate described in being available for
Accepting groove that sample is radially penetrated, respectively positioned at the both sides of the accepting groove and two guiding being connected with the accepting groove
Groove, compress gasket described in two groups is arranged in the gathering sill of both sides with being slidably matched respectively.
Further, the compression end of the connecting shaft is projecting axially into the gathering sill and contradicts in the compression
Applying thrust on pad.
Further, gap is ordinatedly set between the compress gasket and the gathering sill.
Further, the pad guide plate is in the form of annular discs, and the accepting groove is in U-shaped of the opening towards its radial outside
Type；The pad guide plate is fixed on the fixture.
Preferably, the fatigue tester includes regularly being located on the support and with the pressure of closed environmental chamber
Force container, by the fixture in the environmental chamber, correspondingly, the compress gasket is located at the environment to the sample
In chamber, one end of the pressure self-balancing tensile axis is stretched into the environmental chamber and connects the force snesor and the company
Spindle.
Further, the pressure vessel is the autoclave that can fill high temperature and high pressure gas or liquid environment, the height
Pressure kettle includes the kettle being fixedly installed on the support, located at kettle top and the kettle cover that can ordinatedly open and close, it is described
The main shaft of fatigue tester is through the kettle cover and is plugged in the environmental chamber.
Due to the utilization of above-mentioned technical proposal, the utility model has following advantages compared with prior art：This practicality is new
Constant normal force loading device in the fretting fatigue testing of type, wherein being respectively provided with one group of pressure by the radially opposite sides of sample
Tight pad, and pad guide plate is set forms guiding to both sides compress gasket, while setting Liang Zu pressure holdings mechanism respectively to two
The compress gasket of side carries out pressure holding, and controls both sides straight-line electric by the pressure Value Data that two load cells feed back to controller
The working condition of machine, so that in the setting range that normal force loaded value keeps in whole process of the test, so as to realize steady
Fixed loading.The constant normal force loading device can be used in high-temperature high pressure water or steam, the fatigue test of liquid environment, in real time
The force value lost after being worn and torn between ground compensation compress gasket and sample, keeps normal force value to obtain constant, greatly improves
The precision of experiment.
Brief description of the drawings
Accompanying drawing 1 is the overall structure schematic perspective view of the fatigue tester that the present embodiment is used；
Accompanying drawing 2 is the front view of the fatigue tester that the present embodiment is used；
Accompanying drawing 3 is the diagrammatic side-view cross-sectional schematic diagram of the fatigue tester that the present embodiment is used；
Accompanying drawing 4 is the enlarged diagram of normal direction force loading device part in accompanying drawing 3；
Accompanying drawing 5 is the scheme of installation of sample；
Accompanying drawing 6 is the schematic diagram of pad guide plate；
Accompanying drawing 7,8,9,10 is respectively the loading adjustment principle schematic of normal direction force loading device.
Wherein：10th, support；20th, crossbeam；30th, column；40th, oil cylinder；50th, displacement transducer；60th, force snesor；70th, even
Acting flange；80th, column is connected；
1st, autoclave；11st, kettle；12nd, kettle cover；2nd, main shaft；3rd, sample；4th, fixture；41st, clamping fixture seat；42nd, connecting pole；5、
Compress gasket；6th, pad guide plate；61st, accepting groove；62nd, gathering sill；7th, pressure holding mechanism；71st, linear electric motors；72nd, pressure is certainly flat
Weighing apparatus tensile axis；73rd, force snesor；74th, connecting shaft；8th, controller.
Specific embodiment
Specific embodiment is closed below in conjunction with the accompanying drawings to be further elaborated the technical solution of the utility model.
Referring to a kind of HTHP fretting fatigue testing machine shown in Fig. 1 to 6, it includes support 10, is fixedly provided in
It is arranged on column 30 to the two root posts 30, oscilaltion vertically extended on support 10 and the next on relative support 10
Adjustable crossbeam 20 is put, main shaft 2 is provided with crossbeam 20, main shaft 2 can be arranged on to oscilaltion on crossbeam 20.The top of crossbeam 20
Portion is additionally provided with the lift drive mechanism for the oscilaltion of drive shaft 2, and herein, what lift drive mechanism was used is oil cylinder 40,
The expansion link of oil cylinder 40 is extended downwardly from and is connected with main shaft 2, for providing and controlling certain amplitude or load, frequency under it is past
Multiple motion.Force snesor 60 is additionally provided between main shaft 2 and above-mentioned expansion link, what main shaft 2 was used herein is pressure self-balancing drawing
Stretch axle；The cylinder body top of oil cylinder 40 is additionally provided with displacement transducer 50, to detect the displacement vertically of main shaft 2.
Referring to shown in Fig. 1 to Fig. 6, the fatigue tester also includes the pressure vessel being fixedly arranged on support 10, and the pressure holds
Utensil has the closed environment chamber that can fill high temperature and high pressure gas or liquid, and herein, what pressure vessel was used is autoclave 1,
The autoclave 1 includes the kettle 11 being fixedly provided on support 10, can coordinate on kettle 11 kettle cover 12 of keying, kettle
Lid 12 is ordinatedly covered on kettle 11 just so that the inner chamber of kettle 11 is closed and can fill high temperature and high pressure gas or liquid environment,
By setting water circulation in addition with water chemistry detecting system come the ambient parameter in the environmental chamber for controlling autoclave 1.
Main shaft 2 is stretched into the environmental chamber of autoclave through kettle cover 12, and sample 3 is fixed on main shaft 2 simultaneously by fixture 4
It is set in the environmental chamber of autoclave 1.Herein, what is used due to main shaft 2 is pressure self-balancing tensile axis, its have pressure from
Equilibrium function, it is thus possible to offset the inside and outside differential pressure of autoclave 1, eliminates the thrust that pressure difference is produced, and can realize HTHP
Dynamic sealing under environment, using the pressure self-balancing tensile axis come fixture 4 in the Actuator Division of joint test machine and kettle, it is ensured that
Load is not influenceed by the inside and outside differential pressure of autoclave 1 in the Actuator Division reciprocatory movement of fatigue tester.
Referring to shown in Fig. 1, Fig. 2, kettle cover 12 is connected on crossbeam 20 by loading and unloading container mechanism and drives its phase in crossbeam 20
The lifting of kettle 11 is realized to open and close.Specifically, above-mentioned handling container mechanism includes adpting flange 70 and Duo Gen connection columns 80,
Adpting flange 70 is bolted to connection in the lower surface of crossbeam 20, and the lower end for connecting column 80 is fixedly connected on kettle cover 12,
Through the through hole on adpting flange 70 and by nut locking, so, in installation autoclave 1, crossbeam 20 is to moving down for its upper end
Dynamic, kettle cover 12 lands, when connecting the nut on column 80 and not contacted with the surface of adpting flange 70, you can determine kettle cover 12 and
Kettle 11 coordinates to be installed.When connection column 80 can avoid it from being fixedly connected with the above-mentioned setting of adpting flange 70, kettle cover is installed
During 12, after kettle cover 12 and kettle 11 coordinate to be installed, the excessive movement of crossbeam 20 and cause that whole device is in stress shape
State, causes the damage of experimental rig.
Referring to shown in each accompanying drawing, the fatigue tester is also included for adding to the normal force that sample 3 carries out normal force loading
Carry and put, the normal direction force loading device includes：
Compress gasket 5, the compress gasket 5 has two groups, is separately positioned on the different both sides radially of sample 3 with respectively along footpath
To compression sample 3.The contact end face that compress gasket 5 is in contact with sample 3 can be arc surface, plane or sphere, contact end face
Type determined with specific reference to test requirements document.The centerline collineation of both sides compress gasket 5 and with the radial centre lines of sample 3
Extend, normal force is applied to sample 3 during ensuring to compress two compress gaskets 5 respectively from both sides；
Pad guide plate 6, the opposed jaw 4 of pad guide plate 6 is fixedly provided in the environmental chamber of autoclave 1, with
For providing the motion guide during compression sample 3 of two compress gasket 5.Specifically, shown in Figure 6, the pad guide plate 6 is in circle
Plate-like, offer thereon be available for sample 3 radially to penetrate accepting groove 61, respectively be located at the both sides of accepting groove 61 and with accepting groove 61
Two gathering sills 62 being connected, accepting groove 61 is in U-shaped of the opening towards its radial outside, and sample 3 is radially into collecting
Groove 61, and the compress gasket 5 of both sides is slidably cooperatively disposed in the gathering sill 62 of both sides respectively, compress gasket 5 be oriented to
Between groove 62 can gap ordinatedly set, the gap width should be when ensureing in high-temperature expansion can slidably on the premise of to the greatest extent
It is possible small.In the present embodiment, pad guide plate 6 is fixedly provided on fixture 4, and specifically, fixture 4 includes clamping fixture seat 41
And many connecting poles 42 being fixedly connected between clamping fixture seat 41 and the kettle cover 12 of autoclave 1, pad guide plate 6 is fixed on above-mentioned
Many connecting poles 42 on, as shown in Figure 5；
Pressure holding mechanism 7, the pressure holding mechanism 7 has two groups, to be respectively used to apply both sides compress gasket 5 with thrust, so that
Apply sample 3 with normal force.Referring to shown in Fig. 3, Fig. 4, every group of pressure holding mechanism 7 is straight on support 10 including being fixedly provided in
Line motor 71, the pressure self-balancing tensile axis 72 being fixedly arranged on the motor shaft of linear electric motors 71, the pressure self-balancing tensile axis 72
With the output end in the environmental chamber for stretching into autoclave 1, be permanently connected force sensor 73 in the output end；The pressure holding machine
Structure 7 also includes connecting shaft 74, and one end of the connecting shaft 74 is fixed in force snesor 73, and the other end of connecting shaft 73 is for pushing
Compress gasket 5 is applying the compression end of thrust.When carrying out normal force and loading, the compression end of the connecting shaft 73 of both sides edge respectively
Axially stretch into corresponding gathering sill 62 and apply corresponding compress gasket 5 with thrust.
The normal direction force loading device also includes controller 8, and the controller 8 is connected with the signal of force snesor 73 of both sides, together
When be connected with the signal of linear electric motors 71 of both sides.The controller 8 can be controlled according to the pressure value of the feedback of two load cells 73
Make two groups of working conditions of linear electric motors 71, with cause both sides compress gasket 5 apply sample 3 normal force be maintained at setting value or
Person is maintained in setting range.
The course of work and operation principle of the HTHP fretting fatigue testing machine of the present embodiment are illustrated briefly below：
First, fixture 4 is attached on the kettle cover 12 of autoclave 1, while installing pad guide plate 6, then sample 3 is installed
To between clamping fixture seat 41 and main shaft 2, and cause that sample 3 passes radially through the accepting groove 61 of pad guide plate 6, then compressed two
Pad 5 is respectively implanted in two gathering sills 61 of pad guide plate 6 so that gentle touchdown between both sides compress gasket 5 and sample 3,
Should be tried one's best during installation so that the line of centres that both sides compress gasket 5 is in contact with sample 3 should prolong along the radial centre lines of sample 3
Stretch.Followed by crossbeam 20 is fallen with respect to support 10 so that kettle cover 12 is engaged with kettle 11 to be installed and form closed environment
Chamber, by water circulation and water chemistry detecting system come the ambient parameter in the environmental chamber for controlling autoclave 1 so that environmental chamber
The ambient condition filled in room meets test requirements document.
Shown in Figure 7 when initial followed by the loading of normal force, now the compression end of connecting shaft 74 is not yet stretched
In entering the gathering sill 62 of pad guide plate 6, now normal force F0=0.First determine compression end and the end of compress gasket 5 of connecting shaft 74
The distance between face S, controller 8 switches to displacement control mode.As shown in figure 8, controller 8 controls the linear electric motors 71 of both sides
After being operated so that the displacement of the compression end of connecting shaft 74 reaches S, linear electric motors 71 temporarily cease work, now compression end and pressure
Gentle touchdown, normal force F between the end face of tight pad 50=0。
Then, controller 8 switches to force control mode, controller 8 to receive the pressure value of the feedback of force snesor 73 of both sides
To control the working condition of linear electric motors 71.It is specific as follows：As shown in figure 9, controller 8 control two groups of linear electric motors 71 work and
So that the move toward one another of connecting shaft 74 of both sides and respectively move closer to the compress gasket 5 of both sides, 73 points of the force snesor of both sides
The not pressure value F that is detected to the Real-time Feedback of controller 80, as the pressure value F for detecting0Stress value F default less than experiment1
When, linear electric motors 71 described in the control of controller 8 two work and continue to order about the move toward one another of two connecting shaft 74, until force snesor 73
Feed back to the pressure value F of controller 80Equal to F1When, as shown in Figure 10, controller 8 controls the stop motion of two linear electric motors 71 and protects
The pressure value is held, starts fretting fatigue testing.
During fretting fatigue testing, the normal direction force loading device remains that compress gasket 5 puts on sample 3
Normal force is maintained in setting range, and the setting range is F0=F1± f, wherein f are the normal force value fluctuation of fatigue test setting
Range value.Specifically, the pressure value F that two force snesors 73 are detected to the Real-time Feedback of controller 8 respectively0, work as F1-f≤F0≤F1
During+f, the control linear electric motors 71 of controller 8 keep the state of stop motion；Work as F0≤F1During-f, the control linear electric motors of controller 8
71 work and order about the move toward one another of two connecting shaft 74 and increase pressure value；Work as F0≥F1During-f, the control linear electric motors 71 of controller 8
Work and order about two connecting shafts 74 and move in the opposite direction and reduce pressure value, compensate between compress gasket and sample in real time
The force value lost after wearing and tearing, so just ensure that the constant load of normal force during whole fretting fatigue testing.
Certainly, during normal direction force loading device of the present utility model can be also used for the fretting fatigue testing under normal temperature and pressure,
In use, only needing to remove the autoclave 1 in the present embodiment and corresponding water circulation with water chemistry detecting system.Also
It is to say, when for normal temperature and pressure fretting fatigue testing, fatigue tester is connected directly between by fixture 4 by by sample 3
On main shaft 2, guiding to both sides compress gasket 5 is formed by setting pad guide plate 6, while setting 7 points of Liang Zu pressure holdings mechanism
The other compress gasket 5 to both sides carries out pressure holding, and is controlled by the pressure Value Data that two load cells 73 feed back to controller 8
The working condition of both sides linear electric motors 71, so that the setting range that normal force loaded value keeps in whole process of the test
It is interior, the loading of stabilization is realized, improve the precision of experiment.
Above-described embodiment only to illustrate technology design of the present utility model and feature, technique is familiar with its object is to allow
Personage will appreciate that content of the present utility model and be carried out, protection domain of the present utility model can not be limited with this,
All equivalent change or modifications made according to the utility model Spirit Essence, should all cover in protection domain of the present utility model
It is interior.
Claims (8)
1. the constant normal force loading device in a kind of fretting fatigue testing, is arranged on fretting fatigue testing machine for sample
Normal force loading is carried out, the sample is fixedly attached on the main shaft of the fatigue tester by fixture, it is characterised in that：
The normal direction force loading device includes being arranged on the different both sides of the sample radially to compress two groups of the sample respectively
Compress gasket, it is respectively used to apply compress gasket described in two groups with the pressure holding mechanism of thrust, the pressure holding mechanism includes fixed
Linear electric motors on the fretting fatigue testing machine support, the pressure self-balancing being fixed on the motor shaft of the linear electric motors
Tensile axis, the force snesor for being fixed in the pressure self-balancing axle shaft end and one end are mutually fixedly connected with the force snesor
And for applying the connecting shaft of thrust, the other end of the connecting shaft is for pushing the compress gasket to apply thrust
Compression end, the normal direction force loading device also include can according to two groups force snesor feedback pressure value control two groups
The controller of the linear electric motors working condition.
2. the constant normal force loading device in fretting fatigue testing according to claim 1, it is characterised in that：The pressure
The contact end face that tight pad is in contact with the sample is arc surface, plane or sphere, the center line of compress gasket described in both sides
Conllinear and along the sample radial centre lines extend.
3. the constant normal force loading device in fretting fatigue testing according to claim 1, it is characterised in that：The method
Also include that the pad is oriented to for providing compress gasket described in two groups with the pad guide plate of motion guide to force loading device
The relatively described support of plate is fixedly disposed, and the collecting for being available for the sample radially to penetrate is offered on the pad guide plate
Groove, the both sides that the accepting groove is located at respectively and two gathering sills being connected with the accepting groove, compress gasket described in two groups
It is arranged in the gathering sill of both sides with being slidably matched respectively.
4. the constant normal force loading device in fretting fatigue testing according to claim 3, it is characterised in that：The company
The compression end of spindle is projecting axially into the gathering sill and contradicts on the compress gasket to apply thrust.
5. the constant normal force loading device in fretting fatigue testing according to claim 3, it is characterised in that：The pressure
Tight gap between pad and the gathering sill is ordinatedly set.
6. the constant normal force loading device in fretting fatigue testing according to claim 3, it is characterised in that：The pad
Piece guide plate is in the form of annular discs, and the accepting groove is in U-shaped of the opening towards its radial outside；The pad guide plate is fixed on institute
State on fixture.
7. the constant normal force loading device in fretting fatigue testing according to claim 1, it is characterised in that：It is described tired
Labor testing machine includes that regularly on the support and with the pressure vessel of closed environmental chamber, the sample passes through institute
Fixture is stated in the environmental chamber, correspondingly, the compress gasket is located in the environmental chamber, the pressure self-balancing
Stretch into the environmental chamber and connect the force snesor and the connecting shaft in one end of tensile axis.
8. the constant normal force loading device in fretting fatigue testing according to claim 7, it is characterised in that：The pressure
Force container is the autoclave that can fill high temperature and high pressure gas or liquid environment, and the autoclave includes being fixedly installed on the machine
Kettle on seat, located at kettle top and the kettle cover that can ordinatedly open and close, the main shaft of the fatigue tester is passed through
The kettle cover is simultaneously plugged in the environmental chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621296502.4U CN206208644U (en) | 2016-11-30 | 2016-11-30 | Constant normal force loading device in fretting fatigue testing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621296502.4U CN206208644U (en) | 2016-11-30 | 2016-11-30 | Constant normal force loading device in fretting fatigue testing |
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| CN206208644U true CN206208644U (en) | 2017-05-31 |
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| CN201621296502.4U Active CN206208644U (en) | 2016-11-30 | 2016-11-30 | Constant normal force loading device in fretting fatigue testing |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106680068A (en) * | 2016-11-30 | 2017-05-17 | 岭东核电有限公司 | Constant normal force loading device and constant normal force loading method in fretting fatigue test |
| JP2019035689A (en) * | 2017-08-18 | 2019-03-07 | Ｔｏｗａ株式会社 | Tensile test machine tool and tensile test machine |
| CN109752258A (en) * | 2019-02-26 | 2019-05-14 | 浙江工业大学 | A kind of fretting fatigue testing normal direction loading device |
| CN110118695A (en) * | 2019-05-23 | 2019-08-13 | 南京工程学院 | A kind of constant stress load hydrogen permeability experimental facility and test method |
| CN110208125A (en) * | 2019-06-19 | 2019-09-06 | 中国科学院金属研究所 | A kind of high-temperature high pressure water fretting fatigue normal pressure bringing device and its application method |
| CN114323949A (en) * | 2021-12-31 | 2022-04-12 | 哈尔滨工业大学（威海） | Normal loading thin plate micro-tensile test device and method |
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2016
- 2016-11-30 CN CN201621296502.4U patent/CN206208644U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106680068A (en) * | 2016-11-30 | 2017-05-17 | 岭东核电有限公司 | Constant normal force loading device and constant normal force loading method in fretting fatigue test |
| JP2019035689A (en) * | 2017-08-18 | 2019-03-07 | Ｔｏｗａ株式会社 | Tensile test machine tool and tensile test machine |
| CN109752258A (en) * | 2019-02-26 | 2019-05-14 | 浙江工业大学 | A kind of fretting fatigue testing normal direction loading device |
| CN110118695A (en) * | 2019-05-23 | 2019-08-13 | 南京工程学院 | A kind of constant stress load hydrogen permeability experimental facility and test method |
| CN110118695B (en) * | 2019-05-23 | 2021-11-30 | 南京工程学院 | Constant stress loading hydrogen permeation experimental device and method |
| CN110208125A (en) * | 2019-06-19 | 2019-09-06 | 中国科学院金属研究所 | A kind of high-temperature high pressure water fretting fatigue normal pressure bringing device and its application method |
| CN110208125B (en) * | 2019-06-19 | 2023-12-08 | 中国科学院金属研究所 | High-temperature high-pressure water micro-fatigue positive pressure applying device and using method thereof |
| CN114323949A (en) * | 2021-12-31 | 2022-04-12 | 哈尔滨工业大学（威海） | Normal loading thin plate micro-tensile test device and method |
| CN114323949B (en) * | 2021-12-31 | 2022-08-05 | 哈尔滨工业大学（威海） | Normal loading thin plate micro-tensile test device and method |
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