CN106568656A - Testing device used for detecting component mechanical properties - Google Patents
Testing device used for detecting component mechanical properties Download PDFInfo
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- CN106568656A CN106568656A CN201610973872.5A CN201610973872A CN106568656A CN 106568656 A CN106568656 A CN 106568656A CN 201610973872 A CN201610973872 A CN 201610973872A CN 106568656 A CN106568656 A CN 106568656A
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- 238000012360 testing method Methods 0.000 title claims abstract description 110
- 238000012546 transfer Methods 0.000 claims description 31
- 238000001514 detection method Methods 0.000 claims description 16
- 230000005540 biological transmission Effects 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 7
- 238000009413 insulation Methods 0.000 claims description 7
- 229920001971 elastomer Polymers 0.000 claims description 4
- 239000000463 material Substances 0.000 description 12
- 230000008859 change Effects 0.000 description 11
- 239000004567 concrete Substances 0.000 description 8
- 238000003756 stirring Methods 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000011150 reinforced concrete Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- 238000005498 polishing Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 210000004243 sweat Anatomy 0.000 description 3
- 108010066057 cabin-1 Proteins 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 229920002379 silicone rubber Polymers 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
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- 230000002277 temperature effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/18—Performing tests at high or low temperatures
Abstract
The invention discloses a testing device used for detecting component mechanical properties. The testing device comprises a working cabin, a heat loading system, an internal mechanical load loading system, an external mechanical load loading system, a temperature control system, and a testing system; the working cabin is used for placing a component to be tested, and an extremely low temperature environment can be provided in the working cabin; the heat loading system is arranged at one side of the working cabin, and is used for thermal load loading of the working cabin; the internal mechanical load loading system is arranged in the working cabin, is connected with the component to be tested, and is used for loading the component to be tested with mechanical load; the external mechanical load loading system is connected with the internal mechanical load loading system, and is used for loading the internal mechanical load loading system with mechanical load; the temperature control system is connected with the working cabin, and is used for controlling temperature increasing and reducing and ensuring temperature uniformity in the working cabin; and the testing system is connected with the component to be tested, and is used for testing mechanical properties of the component to be tested.
Description
Technical field
The present invention relates to the test dress that a kind of test temperature under cryogenic environment affects on the mechanical property of material or component
Put, the experimental rig of the Mechanics Performance Testing of armored concrete test specimen is more particularly to carried out under ultralow temperature.
Background technology
Large-scale gas storage facility is needed in low temperature environment operation work.For example store ethene need in -103.7 DEG C of environment,
Storage LNG (liquefied natural gas) need to be in -165 DEG C of environment.The exploration of the outer space is directed to the environment of ultralow temperature, such as moonscape
Minimum temperature reaches subzero 183 DEG C.South poles extremely cold area is also low temperature environment, and minimum temperature reaches -80 DEG C.With human society
Development, the exploitation of the increase in demand to the energy and other materials, such as combustible ice needs substantial amounts of storage facility；To the outer space and pole
The Exploratory behavior on ground also constantly increases, therefore the materials demand to running under ultra-low temperature surroundings is also more and more.
Reinforced Concrete Materials is one of conventional cheap material, commonly used in large-scale low-temperature storage tank.Temperature pair
The impact of armored concrete performance and in ultra-low temperature surroundings armored concrete performance howIt is that we build ultralow temperature operation
The problem that facility must take into.To understand the characteristic as this kind of material of armored concrete under extreme low temperature environment, need super
Its mechanical property is tested under low temperature environment, and test temperature changes to material or the Effect on Mechanical Properties of test specimen.At present, for
The device of test specimen performance test under extreme temperature environment, typically all voluntarily developed by research unit or entrusted relevant plant design,
Manufacture.Because constituent parts determine the aspects such as the temperature range of research, content of the test and method, and the shape and size of test specimen
Difference, configuration and the construction for having testing equipment is far from each other, and still has deficiency in aspect of performance.Now specifically it is summarized as follows：
Materials and Design are delivered《Mechanical properties of normal strength
mild steel and high strength steel S690in low temperature relevant to Arctic
environment》And《Low temperature Building technology》Deliver《Steel bar mechanics performance test device is developed under ultra-low temperature surroundings》, can
To realize in sweat box directly to test specimen load test.But limited by the aspect such as sweat box volume and charger condition,
This kind equipment is used for the material property testing to reinforcing bar or steel strand wires etc. and studies, it is difficult to for large scale structures such as armored concrete
Test specimen carries out mechanics performance study under ultra-low temperature surroundings.
《Low temperature Building technology》Deliver《Ultralow temperature concrete cooling is risen again the experimental study of curve》In, it is proposed that it is a set of
Ultralow temperature loading environment system, wherein by arranging circular pressurization mouth in the top and bottom of ultralow temperature load test case, using voluntarily
The outside mechanics machine load of polishing head transmission for designing and producing, test block is placed in case to contact with pressure head carries out pressure test.
Chinese patent " a kind of high/low temperature device for mechanical test " (patent No. 201410531129.5), proposes thermocycling
Case is combined with mechanics machine, and fixture is connected with mechanics machine, by the way that high-low temperature resistant fixture is moved into together with folded test specimen
The high-low temperature test chamber of upper lower band mouth, is achieved in the mechanical test of test specimen under high and low temperature environment.Although this kind of device is in theory
Can realize carrying out large-sized reinforced concrete test specimen at low ambient temperatures Mechanical loading test, but its problem for existing embodies
：Because polishing head or fixture are directly connected with mechanics machine, when causing temperature change in chamber, polishing head or fixture meeting
Temperature is passed to into mechanics machine by test specimen.It is derived from chamber inside in particular for the simulation of ultra-low temperature surroundings
Ultralow temperature not only causes damage to mechanics machine, can also reduce cooling efficiency in chamber, causes logical nitrogen quantity to increase, and lowers the temperature into
Originally increase substantially.
Additionally, above-mentioned existing device the problem is：The strain of test specimen under extreme temperature and power corrective action simultaneously
Value cannot accurately be known.It is because deformation (strain) sensor of usual material cannot work under extreme low temperature environment therefore many
The strain value of the lower test specimen of extreme temperature effect is measured using indirect mode.Each installation is stretched out such as on test specimen two ends stress pressure head
The overhanging arm of chamber, is thus transferred to the deformation of test specimen outside sweat box.This indirect measure, it is difficult to obtain reinforcing bar and
Concrete strain data most directly perceived, to reinforced concrete section stresses re-distribution situation at temperature and the separate corrective action of power
Accurate research cause obstacle.
The content of the invention
It is an object of the present invention to provide a kind of be used for extreme low temperature degree (reachable -180 DEG C) environmental testing armored concrete
The experimental rig of the mechanical property of component and test temperature change to reinforced concrete member Effect on Mechanical Properties, for solving
Mechanical load is loaded and the impact that intercouples between the loading of hot load.
It is that, up to above-mentioned purpose, the present invention is employed the following technical solutions：
A kind of experimental rig of detection means mechanical property, including：
Work chamber, for disposing test component, can produce extreme low temperature environment in the work chamber；
Hot loading system, is arranged in the work chamber side, for carrying out the loading of thermal force to the work chamber；
Internal mechanical load loading system, is arranged on inside the work chamber, is connected with the test component, for institute
State test component and apply mechanical load；
Outside mechanical load loading system, and the internal mechanical load loading system, for the internal mechanical lotus
Carry loading system and apply mechanical load；
Temperature control system, is connected with the work chamber, for controlling the work chamber in gradient of temperature and ensure temperature
The uniformity of degree；
Test system, is connected with the test component, for testing the mechanical property of the test component.
According to a kind of experimental rig of detection means mechanical property proposed by the present invention, wherein, the hot loading system bag
Evaporimeter, heating tube and wind wheel are included, is arranged on the wall in mixed gas cabin of the work chamber side, the heating tube is used to provide
Required heat, the evaporimeter is used for the moisture to producing in work chamber and is evaporated, and the wind wheel is under the drive of motor
Rotation is with dispersed heat.
According to a kind of experimental rig of detection means mechanical property proposed by the present invention, wherein, the internal mechanical load
Loading system includes：
Loads fixture, for being clamped in the middle part of the test component；
Inside supports, and is arranged on the lower section of the test component, and the internal two ends for supporting have set up respectively props up
Seat, for supporting the two-end part of the test component；The internal two ends for supporting also extend downwardly out two support columns, described
Two support columns pass the shell of the work chamber and are fixed on two rubber supports；
Internal load transfer device, it passes through a loop bar and is connected with the loads fixture, and to the loads fixture load is transmitted.
According to a kind of experimental rig of detection means mechanical property proposed by the present invention, wherein, the outside mechanical load
Loading system includes the outside load transfer device being connected with the internal load transfer device, and the outside load transfer device is subject to external load
Mechanical load, so as to the internal load transfer device transmission load.
According to a kind of experimental rig of detection means mechanical property proposed by the present invention, wherein, the machine of the external load
Tool load is realized by hydraulic system or counterweight.
According to a kind of experimental rig of detection means mechanical property proposed by the present invention, wherein, the bottom of the work chamber
Outer layer is provided with heat-insulation layer.
According to a kind of experimental rig of detection means mechanical property proposed by the present invention, wherein, the loads fixture is well
Font fixture, its upside is rotatable roller bearing loop bar, and the test component is supported on the inside by the roller bearing loop bar
In support.
Compared with prior art, the invention has the advantages that：
Similar experimental rig cannot concurrently or separately adjust hot load and mechanical load is asked before the 1, the present invention is solved
Topic.Similar experimental rig has large effect in temperature load to mechanical load.The experimental rig of the present invention is applied in hot load
Added-time affects mechanical load, and mechanical load does not affect hot load when applying, therefore hot load and mechanical load are separate, do not have
Coupling.There is coupling effect between the hot load of similar experimental rig and mechanical load.
2nd, experimental rig of the present invention, need not nigration when applying hot load or applying mechanical load in process of the test
The environment of component or test component, it is ensured that the accuracy of result of the test.
3rd, similar experimental rig mainly carries out specimen test, and the experimental rig of the present invention can carry out component test.Structure
The size of part is far longer than the size of test specimen.With actual components in same magnitude on yardstick.
4th, test system can be tested during temperature and mechanical load change under extreme temperature environment, on component
The conditional curve of a little mechanical responses.It is easy to study the mechanics of the mechanical property and temperature of extreme temperature environment lower member to component
The impact of performance.
Description of the drawings
Fig. 1 is the structural representation of the ultra-low temperature testing device to being loaded and being tested by curved test specimen；
Fig. 2 is the structural representation for drawing axle test specimen loading and the ultra-low temperature testing device tested；
The attachment structure plan view and side of Fig. 3 (a) and (b) respectively by curved loads fixture with internal load transfer device upper end
View；
Fig. 4 (a) and (b) are respectively axle and draw attachment structure plan view of the loads fixture with internal load transfer device upper end and side
View；
Fig. 5 (a) and (b) are respectively the plan view and side view of internal load transfer device；
Fig. 6 (a) and (b) are respectively the plan view and side view of outside load transfer device；
Fig. 7 is the connection sectional view of internal load transfer device and outside load transfer device；
Fig. 8 is the support connection sectional view between interior support posts pin and external means of support.
Description of reference numerals：
1- work chambers；2- loads fixtures；3- test specimens；4- inside supports；5- inside load transfer device；6- heat-insulation layers；Outside 7-
Load transfer device；8- rubber supports；9- strain gauges；10- test cables；11- data are measured and tape deck；12- weights；
13- data collecting systems are supported；14- external supports；15- inside load transfer device passes hole；16- interior support posts punched out
Hole；17- test cables pass hole；18- stirring motors；The special evaporimeters of 19-；20- heating tubes；21- stirs wind wheel；22- is mixed
Gas cabin；23- the earth；24- inside reaction frame.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than the embodiment of whole.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not paid
Embodiment, belongs to the scope of protection of the invention.
Refer to Fig. 1 to Fig. 8.The experimental rig of detection means mechanical property proposed by the present invention is by extreme low temperature environment
Work chamber, hot load loading system, temperature control system, internal mechanical load loading system, outside mechanical load loading system
With a few part compositions such as test system.Work chamber is the position that Installation And Test is carried out for test component, hot load loading system
For carrying out hot load loading to test component, temperature control system is used to be controlled temperature in work chamber, further,
Mechanical load system is used to carry out mechanical load loading to test component.So as to realize to test component in extreme low temperature environmental forces
Learn the impact test of performance test and temperature change to the mechanical property of test component.
Specifically, hot loading system is by liquid nitrogen container (not shown), heat-insulated pipe (not shown), evaporimeter 19, heating
The compositions such as pipe 20, stirring motor 18, stirring wind wheel 21.In order to prevent that thermal shock and low temperature overshoot are formed to test component, will steam
Send out device 19, heating tube 20 to be arranged in mixed gas cabin 22, hot load is carried out to work chamber 1 by stirring motor 18 and stirring wind wheel 21
Loading.Stirring wind wheel 21 can ensure that uniformity of temperature profile in work chamber 1, moreover it is possible to effectively improve the heat exchange effect of test component 3
Rate.Temperature control system (not shown) is made up of control program, control valve group, control system, thermocouple etc., is protected by temperature control system
The uniformity of the speed and temperature of temperature and cooling or intensification in card work chamber 1.
Internal mechanical load loading system is arranged in work chamber 1, and test component 3 is arranged on internal mechanical load loading system
On system, and mechanical load is applied to testing test specimen 3 by the system.Internal mechanical load loading system includes internal reaction frame
24th, internal support 4, loads fixture 2, internal load transfer device 5 etc..Inside to support and arrange heat-insulation and heat-preservation between 4 and external support 14
Layer 6, to ensure the transmission of mechanical force, it is to avoid heat transfer occurs.It is also provided between internal load transfer device 5 and outside load transfer device 7
Insulating 6, to ensure the transmission of mechanical force, it is to avoid heat transfer occurs.Calculating shows, rational design is internal support 4 with
Insulating between external support 14 and internal load transfer device 5 and outside load transfer device 7, can effectively reduce hot friendship
Change, hot exchange power is can be controlled in the range of several watts, it is possible to ensure the transmission of power load.
Because extreme low temperature environment has a great impact to the property of material, the present invention is using internal mechanical load loading system
System, it is possible to reduce the usage amount of special material, reduces the usage amount of liquid nitrogen, it is ensured that loading system is not influenced by temperature.It is internal
The different arrangements of mechanical load loading system are capable of achieving the bending of test component, and axle draws, and axle contracting test.During bend test, receive
Curved loads fixture 2 is groined type, and test specimen 3 is penetrated " well head ", is rotary roll shaft loop bar on the upside of groined type fixture, test specimen
3 two ends are bearing in internal support on 4 by roll shaft.During axis pulling experiment, axle draw loads fixture be designed as small-sized reaction frame with it is drop-down
Chuck two parts, drop-down chuck is clamped test specimen lower end and is connected with internal load transfer device 5, and reaction frame 24 clamps test specimen from Tourniquet clamping head
3 upper ends are simultaneously overally supported in support 4 internally.
Outside mechanical load loading system is connected and power transmission by heat-insulation layer 6 with interior loading system, can effective blocking temperature
Impact, each component of outer loading system works in normal temperature environment.Temperature change in work chamber 1 adds to outside mechanical load
Loading system does not produce impact, and the change of outside mechanical load also will not produce impact to the temperature in work chamber 1.In process of the test
In hot load and mechanical load can be changed simultaneously, also can individually change.The mechanical load of loading can realize by hydraulic system,
Also can be realized by poise system.Realize that mechanical load is loaded using counterweight 12 in apparatus of the present invention.Due to using counterweight 12, can be with
Under realizing mechanical load steady state, temperature change is tested the mechanical property of test component 3.
The test system of experimental rig is by strain gauge 9, thermocouple (not shown), test cable 10, instrument connection 17, electric bridge
Box (not shown), the grade of data collecting instrument 11 composition.Strain gauge 9 and thermocouple are arranged on the test component 3 of test, by surveying
Examination cable 10 is by the DATA REASONING and tape deck 11 outside test signal and work chamber 1 and data collecting system 13 phases of support
Even.Test cable 10 is drawn by instrument connection 17, silicon rubber closure is arranged at instrument connection 17, to ensure the thermal insulation of work chamber 7
Energy.
The following is the step of carrying out test specimen 3 by curved load test under ultra-low temperature surroundings：
(1) first will be packaged with loads fixture 2 by curved test component 3, open experimental rig work chamber 1, will be received by crane
Curved test component 3 and loads fixture 2 are placed in specified location in work chamber 1；(2) as shown in figure 4, by loads fixture 2 with it is internal
The upper end of load transfer device 5 is connected by loop bar, closes work hatch door；(3) a number of weights 12 are added in weighted areas,
Now test component 3 bears 3 points of curved load actions, and wherein the deadweight of weights 12 is by outside load transfer device 7, internal biography
Power apparatus 5, fixture 2 pass to test component 3 and form span centre concentrated force；The two ends end reaction of test component 3 then supports 4 by internal
There is provided, interior support posts pass through work chamber external support on rubber support 8, so as to support reaction is passed to into external support 14, and
The earth is ultimately transferred to, referring to Fig. 1.The whole Path of Force Transfer of the present invention avoids humid test box body, so as to avoid applying
With impact of the heavy load to cryogenic testing box body.(4) temperature by relenting in temperature control system adjustment work cabin 1
To assigned temperature, working at ultra-low temperature is lowered the temperature therewith in cabin, now due to the inside load transfer device 5 and outside power transmission dress of work chamber 1
Put between 7, internal support has added respectively silicon rubber heat-insulation layer 6 and between external support, referring to Fig. 7, Fig. 8, so as to ensure work
Cabin 1 and external insulation.(5) measured and record system 11 by data, can be obtained in real time in specified counterweight load action and temperature
Under degree effect, the data such as strained situation and temperature change at the same section different measuring points position of test component 3.
Axis pulling experiment component is loaded and is tested to implement step also similar with above-mentioned steps, repeat no more here.
One of ordinary skill in the art will appreciate that：Accompanying drawing is the schematic diagram of one embodiment, module in accompanying drawing or
Flow process is not necessarily implemented necessary to the present invention.
One of ordinary skill in the art will appreciate that：The module in device in embodiment can be according to embodiment description point
In being distributed in the device of embodiment, it is also possible to carry out respective change and be disposed other than in one or more devices of the present embodiment.On
Stating the module of embodiment can merge into a module, it is also possible to be further split into multiple submodule.
Finally it should be noted that：Above example only to illustrate technical scheme, rather than a limitation；Although
The present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：It still may be used
To modify to the technical scheme described in previous embodiment, or equivalent is carried out to which part technical characteristic；And
These modifications are replaced, and do not make the spirit and model of the essence disengaging embodiment of the present invention technical scheme of appropriate technical solution
Enclose.
Claims (7)
1. a kind of experimental rig of detection means mechanical property, it is characterised in that include：
Work chamber, for disposing test component, can produce extreme low temperature environment in the work chamber；
Hot loading system, is arranged in the work chamber side, for carrying out the loading of thermal force to the work chamber；
Internal mechanical load loading system, is arranged on inside the work chamber, is connected with the test component, for the examination
Test component and apply mechanical load；
Outside mechanical load loading system, and the internal mechanical load loading system, for adding to the internal mechanical load
Loading system applies mechanical load；
Temperature control system, be connected with the work chamber, for controlling the work chamber in gradient of temperature and ensure temperature
The uniformity；
Test system, is connected with the test component, for testing the mechanical property of the test component.
2. a kind of experimental rig of detection means mechanical property according to claim 1, it is characterised in that the heat loading
System includes evaporimeter, heating tube and wind wheel, is arranged on the wall in mixed gas cabin of the work chamber side, and the heating tube is used
Heat needed for providing, the evaporimeter is used for the moisture to producing in work chamber and is evaporated, and the wind wheel is in motor
Lower rotation is driven with dispersed heat.
3. a kind of experimental rig of detection means mechanical property according to claim 1, it is characterised in that the internal machine
Tool load loading system includes：
Loads fixture, for being clamped in the middle part of the test component；
Inside supports, and is arranged on the lower section of the test component, and the internal two ends for supporting have set up respectively bearing, used
In the two-end part for supporting the test component；The internal two ends for supporting also extend downwardly out two support columns, described two
Platen passes the shell of the work chamber and is fixed on two rubber supports；
Internal load transfer device, it passes through a loop bar and is connected with the loads fixture, and to the loads fixture load is transmitted.
4. a kind of experimental rig of detection means mechanical property according to claim 3, it is characterised in that the outside machine
Tool load loading system includes the outside load transfer device being connected with the internal load transfer device, and the outside load transfer device is subject to outer
The mechanical load of portion's loading, so as to the internal load transfer device transmission load.
5. the experimental rig of a kind of detection means mechanical property according to claim 4, it is characterised in that the outside adds
The mechanical load of load is realized by hydraulic system or counterweight.
6. a kind of experimental rig of detection means mechanical property according to claim 4, it is characterised in that the work chamber
Bottom exterior layer be provided with heat-insulation layer.
7. a kind of experimental rig of detection means mechanical property according to claim 3, it is characterised in that the loading clamp
Have for groined type fixture, its upside is rotatable roller bearing loop bar, and the test component is supported on institute by the roller bearing loop bar
State on internal support.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610973872.5A CN106568656B (en) | 2016-10-28 | 2016-10-28 | Test device for detecting mechanical property of component |
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|---|---|---|---|
| CN201610973872.5A CN106568656B (en) | 2016-10-28 | 2016-10-28 | Test device for detecting mechanical property of component |
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| CN106568656B CN106568656B (en) | 2024-01-30 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107798943A (en) * | 2017-11-13 | 2018-03-13 | 山西大学 | Flexural member Fire Furnace |
| CN108168926A (en) * | 2018-01-22 | 2018-06-15 | 浙江大学城市学院 | A kind of environmental suitability test device of structural member and health monitoring equipment |
| CN108770835A (en) * | 2018-07-23 | 2018-11-09 | 上海东富龙医疗装备有限公司 | Work chamber is automatically stored in biological sample |
| CN110455640A (en) * | 2019-08-14 | 2019-11-15 | 北京建筑大学 | Tensile Strength of Frozen Soil test macro and test method |
| CN111238957A (en) * | 2020-04-08 | 2020-06-05 | 黄河科技学院 | Al-based binary intermetallic compound thermodynamic property experimental device |
| CN114216791A (en) * | 2021-12-16 | 2022-03-22 | 哈尔滨工业大学 | Multifunctional loading device for small beam plate ice test piece and test loading method thereof |
| CN115683825A (en) * | 2022-11-15 | 2023-02-03 | 上海航空材料结构检测股份有限公司 | Mechanical test device and mechanical test method for providing high-temperature wet environment |
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