CN106198195A - A kind of environment simulator for high/low temperature fatigue property test - Google Patents
A kind of environment simulator for high/low temperature fatigue property test Download PDFInfo
- Publication number
- CN106198195A CN106198195A CN201610873554.1A CN201610873554A CN106198195A CN 106198195 A CN106198195 A CN 106198195A CN 201610873554 A CN201610873554 A CN 201610873554A CN 106198195 A CN106198195 A CN 106198195A
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- resistant
- elevated temperatures
- hole
- low temperature
- temperature
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
-
- 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
A kind of environment simulator for high/low temperature fatigue property test, is made up of with bolt, environmental cabinet and liquid nitrogen container etc. resistant to elevated temperatures multi-step circular shaft adapter, temperature control cooling-water machine, resistant to elevated temperatures five hole-and-slot fixtures, shop bolt.Annexation between them is as follows: resistant to elevated temperatures multi-step circular shaft adapter is connected with temperature control cooling-water machine by inlet tube and outlet tube, resistant to elevated temperatures five hole-and-slot fixture one end are arranged on adapter, sample is positioned by the other end by shop bolt, and be connected by threaded bolt and sample are fixing, environmental cabinet is by resistant to elevated temperatures five hole-and-slot fixtures and the sample sealed envelope of clamping thereof, and liquid nitrogen container is connected with environmental cabinet.The environment simulator of the present invention by rationally exquisite coordinating and connecting between each subsystem, can easy, practical, accurately achieve the high/low temperature environment simulation of experiment on fatigue properties, provide technical support and means for high/low temperature fatigue property test.
Description
Technical field
The present invention relates to a kind of environment simulator for high/low temperature fatigue property test, belong to experimental test technology
Field.
Background technology
Engineering material or structure in use, can be born alternate load and produce fatigue crack, when damage accumulation surpasses
Destroying when crossing allowable limit, the safety to material or structure impacts.Engineering material and structure are the most usually in cold
Or use in the environment of extremely hot, the fatigue behaviour of material can be impacted by high/low temperature environment, therefore, in order to guarantee safety,
Need to measure the fatigue behaviour under high/low temperature environment.The difficult point of high/low temperature fatigue property test technology is environmental simulation, mesh
Before, the most immature to the environment simulation technique meeting high/low temperature fatigue property test demand, to this end, invented one both at home and abroad
For the environment simulator of high/low temperature fatigue property test, by resistant to elevated temperatures multi-step circular shaft adapter, temperature control cold water
Machine, resistant to elevated temperatures five hole-and-slot fixtures, shop bolt form with bolt, environmental cabinet and liquid nitrogen container etc., can be easy, practical, accurately
Achieve the simulation of experiment on fatigue properties environment, provide technical support and means for high/low temperature fatigue property test.
Summary of the invention
1, purpose: it is an object of the invention to provide a kind of environment simulator for high/low temperature fatigue property test,
Fatigue property test under high/low temperature environment.
2, technical scheme: a kind of environment simulator for high/low temperature fatigue property test of the present invention, by resistant to elevated temperatures
Multi-step circular shaft adapter, temperature control cooling-water machine, resistant to elevated temperatures five hole-and-slot fixtures, shop bolt and bolt, environmental cabinet and liquid
Nitrogen tanks etc. form.Annexation between them is as follows: resistant to elevated temperatures multi-step circular shaft adapter is by inlet tube and outlet tube and temperature
Control cooling-water machine is connected, to realize the cooling of adapter under hot environment；Resistant to elevated temperatures five hole-and-slot fixture one end are arranged on
On resistant to elevated temperatures multi-step circular shaft adapter, sample is positioned with hole, location by the other end by shop bolt, and by band spiral shell
Stricture of vagina bolt is fixing with sample to be connected；Environmental cabinet is by resistant to elevated temperatures five hole-and-slot fixtures and the sample sealed envelope of clamping thereof, it is achieved
Airtight and the insulation of high/low temperature environment；Liquid nitrogen container is connected with environmental cabinet, by carrying liquid nitrogen cooling in environmental cabinet, it is achieved
Low temperature environment.
Described temperature control cooling-water machine connects resistant to elevated temperatures multi-step circular shaft adapter by plastic catheter, formed into and out of
Water circulates, it is achieved refrigeration, its type of cooling is simple, cooling effectiveness is high.
After described resistant to elevated temperatures multi-step circular shaft adapter passes top or the bottom opening of environmental cabinet, one end is passed through
Screw thread is fixing with fatigue machine to be connected, and the other end connects by screw thread and five hole-and-slot fixtures are fixing again, so, and test fixture
Just it is placed in inside environmental cabinet with sample, and adapter is little through the opening of environmental cabinet, it is simple to seal and be incubated, sample handling letter
Just.Choose the high duty alloy steel making adapter of high temperature resistant resistance to deformation, adapter be machined with Cooling Holes, by conduit with
Temperature control cooling-water machine is connected, and utilizes water-in and water-out circulate, it is achieved lower the temperature, and can intercept High temperature diffusion to testing machine joint, be prevented effectively from height
The temperature impact on testing machine sensor, it is ensured that test load applies precision.
The medium pore of described resistant to elevated temperatures five hole-and-slot fixtures is hole, location, by the circular shaft shape shop bolt of band shoulder
Through hole, location, sample is positioned, it is ensured that the axiality that sample is installed；Upper and lower, symmetrical point of remaining four screwed hole
Cloth, in the surrounding in hole, location, clamps sample by bolt, and the clamping of such mode consolidates, and chucking power is uniform, it is ensured that test load
The precision applied.Additionally, resistant to elevated temperatures five hole-and-slot fixtures only fix sample by bolt and screwed hole, it is not necessary to nut etc. are joined
Part, when sample loads and unloads, easier, improve experimental test efficiency.
Described environmental cabinet is metal cabinet structure, is evenly equipped with fine and closely woven and uniform cellucotton insulation in its surrounding wall body
Layer, chamber door edge is equipped with high temperature resistant, aging-resistant silicone rubber, it is simple to seal when it is closed and insulation.Environmental cabinet is also equipped with at a high speed
Electric heater, compressor, vaporizer, solenoid electric valve, temperature controller and high duty alloy resistance temperature measurement sensor etc..High-speed Electric
Heater is used for heating and heating up, and solenoid electric valve is for regulating the input quantity of liquid nitrogen, and compressor is used for compressing liquid nitrogen and enters steaming
Sending out device, vaporizer is used for making liquid nitrogen vaporization and cooling, and the high duty alloy electric resistance sensor in wall body is used for measuring housing environment temperature
Degree, temperature controller is for controlling the output of heater or controlling the liquid nitrogen input quantity of solenoid electric valve, it is achieved appointment height/
Low temperature environment.Temperature controller is coordinated to control based on PID theory, possesses temperature zero offset capability, controls the most efficiently, can drop
Low heating cost, the utilization rate of raising liquid nitrogen.Additionally, chamber door is provided with resistant to elevated temperatures special glass window, window inner side is glued
Conductive film, to realize the automatic defrosting under low temperature environment, can observe the fatigue in high/low temperature fatigue test the most effectively
Phenomenon.
Described liquid nitrogen container is the auto-pressurizing low-temperature (low temperature) vessel of on-demand configuration, when regulation pressure rises to 0.05MPa, opens
Tapping valve, can be by realizing continuous transfusion from pressure charging system.
3, advantage and effect: the environment simulator of the present invention is by rationally exquisite cooperation and the company between each subsystem
Connect, can easy, practical, accurately achieve the simulation of experiment on fatigue properties environment, provide skill for high/low temperature fatigue property test
Art is supported and means.
Accompanying drawing explanation
The present invention is further described with example below in conjunction with the accompanying drawings:
Fig. 1 is temperature control cooling-water machine schematic diagram；
Fig. 2 is resistant to elevated temperatures multi-step shaft-like adapter schematic diagram；
Fig. 3 is resistant to elevated temperatures five pore area groove specimen holder schematic diagrams；
Fig. 4 is shop bolt schematic diagram；
Fig. 5 is fatigue testing specimen schematic diagram；
Fig. 6 is the environment simulator schematic diagram for high/low temperature fatigue property test.
In Fig. 6: parts 1 are temperature control cooling-water machine, and parts 2 are resistant to elevated temperatures multi-step circular shaft adapter, and parts 3 are resistance to height
Five hole-and-slot fixtures of temperature, parts 4 are shop bolt, and parts 5 are fatigue testing specimen, and parts 6 are environmental cabinet, and parts 7 are environmental cabinet
Wall body cellucotton heat-insulation layer, parts 8 are environmental cabinet temperature controller, and parts 9 are liquid nitrogen container.
Detailed description of the invention
The detailed description of the invention of the present invention is described in conjunction with Fig. 1 to Fig. 6:
The present invention is a kind of environment simulator for high/low temperature fatigue property test, resistant to elevated temperatures multi-step justify
The groups such as axle adapter, temperature control cooling-water machine, resistant to elevated temperatures five hole-and-slot fixtures, shop bolt and bolt, environmental cabinet and liquid nitrogen container
Become.In figure 6, resistant to elevated temperatures multi-step circular shaft adapter 2 is connected with temperature control cooling-water machine 1 by inlet tube and outlet tube, to realize
The cooling of adapter under hot environment；Resistant to elevated temperatures five hole-and-slot fixture 3 one end are arranged on resistant to elevated temperatures multi-step circular shaft and turn
In changing-over 2, sample is positioned with hole, location by the other end by shop bolt 4, and fixing with sample 5 even by threaded bolt
Connect；Environmental cabinet 6 is by resistant to elevated temperatures five hole-and-slot fixtures 3 and sample 5 sealed envelope of clamping thereof, it is achieved high/low temperature environment close
Close and be incubated；Liquid nitrogen container 9 is connected with environmental cabinet 6, by carrying liquid nitrogen cooling in environmental cabinet, it is achieved low temperature environment.
Temperature control cooling-water machine, as it is shown in figure 1, connect resistant to elevated temperatures multi-step circular shaft adapter by plastic catheter, is formed
Water-in and water-out circulate, it is achieved refrigeration.Resistant to elevated temperatures multi-step circular shaft adapter is as in figure 2 it is shown, adapter is through environmental cabinet
Behind top or bottom opening, one end is connected by screw thread and fatigue machine are fixing, and the other end is again by screw thread and five hole-and-slots
Fixture is fixing to be connected, and adapter is machined with Cooling Holes, is connected with temperature control cooling-water machine by conduit, utilize water-in and water-out to circulate,
Realize cooling.Resistant to elevated temperatures five pore area groove specimen holders are as it is shown on figure 3, its medium pore is hole, location, by the circular shaft of band shoulder
Sample, through hole, location, is positioned by shape shop bolt, and upper and lower, symmetrical being distributed in of remaining four screwed hole positions hole
Surrounding, clamps sample by bolt.Shop bolt as shown in Figure 4, is the circular shaft part of a band shoulder.Fatigue testing specimen such as Fig. 5 institute
Show, centered by breach plate tensile sample.After all parts carry out coordinating, connect and debugging according to the position relationship shown in Fig. 6, just may be used
Carry out high/low temperature fatigue property test.
Claims (1)
1. the environment simulator for high/low temperature fatigue property test, it is characterised in that: justified by resistant to elevated temperatures multi-step
The groups such as axle adapter, temperature control cooling-water machine, resistant to elevated temperatures five hole-and-slot fixtures, shop bolt and bolt, environmental cabinet and liquid nitrogen container
Become.Annexation between them is as follows: resistant to elevated temperatures multi-step circular shaft adapter is by inlet tube and outlet tube and temperature control cooling-water machine
It is connected, it is achieved the cooling of high temperature shift joint；Resistant to elevated temperatures five hole-and-slot fixture one end are arranged on resistant to elevated temperatures multi-step circle
On axle adapter, sample is positioned with hole, location by the other end by shop bolt, and is fixed with sample by threaded bolt
Connect；Environmental cabinet is by resistant to elevated temperatures five hole-and-slot fixtures and the sample sealed envelope of clamping thereof, it is achieved high/low temperature environment airtight
And insulation；Liquid nitrogen container is connected with environmental cabinet, by carrying liquid nitrogen cooling in environmental cabinet, it is achieved low temperature environment.
Described temperature control cooling-water machine connects resistant to elevated temperatures multi-step circular shaft adapter by plastic catheter, forms water-in and water-out and follows
Ring, it is achieved refrigeration, its type of cooling is simple, cooling effectiveness is high.
After described resistant to elevated temperatures multi-step circular shaft adapter passes top or the bottom opening of environmental cabinet, screw thread is passed through in one end
Fixing with fatigue machine and be connected, the other end connects by screw thread and five hole-and-slot fixtures are fixing again, so, and test fixture and examination
Sample is just placed in inside environmental cabinet, and adapter is little through the opening of environmental cabinet, it is simple to seals and is incubated, sample handling simplicity.
Choose the high duty alloy steel making adapter of high temperature resistant resistance to deformation, adapter is machined with Cooling Holes, by conduit and temperature
Control cooling-water machine is connected, and utilizes water-in and water-out circulate, it is achieved lower the temperature, and can intercept High temperature diffusion to testing machine joint, be prevented effectively from high temperature
Impact on testing machine sensor, it is ensured that test load applies precision.
The medium pore of described resistant to elevated temperatures five hole-and-slot fixtures is hole, location, is passed by the circular shaft shape shop bolt of band shoulder
Hole, location, positions sample, it is ensured that the axiality that sample is installed；Four screwed holes are upper and lower, symmetrical is distributed in for remaining
The surrounding in hole, location, clamps sample by bolt, and the clamping of such mode consolidates, and chucking power is uniform, it is ensured that test load applies
Precision.Additionally, resistant to elevated temperatures five hole-and-slot fixtures only fix sample by bolt and screwed hole, it is not necessary to accessories such as nuts,
During sample handling, easier, improve experimental test efficiency.
Described environmental cabinet is metal cabinet structure, is evenly equipped with fine and closely woven and uniform cellucotton heat-insulation layer, case in its surrounding wall body
Door edge is equipped with high temperature resistant, aging-resistant silicone rubber, it is simple to seal when it is closed and insulation.Environmental cabinet is furnished with High-speed Electric heating
Device, compressor, vaporizer, solenoid electric valve, temperature controller and high duty alloy resistance temperature measurement sensor etc..High-speed Electric heater
For heating and heating up, solenoid electric valve is for regulating the input quantity of liquid nitrogen, and compressor is used for compressing liquid nitrogen and enters vaporizer, steams
Sending out device to be used for making liquid nitrogen vaporization and cooling, the high duty alloy electric resistance sensor in wall body is used for measuring housing environment temperature, temperature
Controller is for controlling the output of heater, or controls the liquid nitrogen input quantity of solenoid electric valve, it is achieved specify high/low temperature ring
Border.Temperature controller is coordinated to control based on PID theory, possesses temperature zero offset capability, controls the most efficiently, it is possible to decrease heating
Cost, the utilization rate of raising liquid nitrogen.Additionally, chamber door is provided with resistant to elevated temperatures special glass window, window inner side gluing conductive thin
Film, to realize the automatic defrosting under low temperature environment, can observe the fatigue phenomenon in high/low temperature fatigue test the most effectively.
Described liquid nitrogen container is the auto-pressurizing low-temperature (low temperature) vessel of on-demand configuration, when regulation pressure rises to 0.05MPa, opens discharge opeing
Valve, can be by realizing continuous transfusion from pressure charging system.
The environment simulator of the present invention is by rationally exquisite cooperation and the connection between each subsystem, it is achieved that fatigue test ring
Airtight and the insulation in border, easy, practical, accurately can simulate high/low temperature environment, provide skill for high/low temperature fatigue property test
Art is supported and means.
Priority Applications (1)
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| CN201610873554.1A CN106198195A (en) | 2016-09-30 | 2016-09-30 | A kind of environment simulator for high/low temperature fatigue property test |
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| CN201610873554.1A CN106198195A (en) | 2016-09-30 | 2016-09-30 | A kind of environment simulator for high/low temperature fatigue property test |
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| CN106198195A true CN106198195A (en) | 2016-12-07 |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106546630A (en) * | 2016-12-12 | 2017-03-29 | 北京航空航天大学 | A kind of environment simulator for the test of very high temperature Crack Extension performance |
| CN106680121A (en) * | 2016-12-23 | 2017-05-17 | 西南交通大学 | Synchrotron radiation in-situ imaging fatigue testing machine comprising temperature control mechanism and testing method of synchrotron radiation in-situ imaging fatigue testing machine |
| CN106706323A (en) * | 2016-12-12 | 2017-05-24 | 北京航空航天大学 | Environment simulator used in extremely-high-temperature fatigue performance test of engine materials |
| CN107084890A (en) * | 2017-05-11 | 2017-08-22 | 株洲时代新材料科技股份有限公司 | A kind of rail traffic vehicles anti-side rolling torsion rod thermocycling method and apparatus |
| CN107917840A (en) * | 2017-09-29 | 2018-04-17 | 中国民航大学 | Mini-size self-control formula temperature fatigue testing machine |
| CN108375469A (en) * | 2018-02-12 | 2018-08-07 | 西北工业大学 | Rubber seal life predication apparatus and method |
| CN108844883A (en) * | 2018-05-24 | 2018-11-20 | 北京航空航天大学 | A kind of environment simulator for the damp and hot Mechanics Performance Testing of composite material |
| CN109612700A (en) * | 2018-12-11 | 2019-04-12 | 东南大学 | Components Performance Test System under deep cooling hyperbaric environment |
| CN110261231A (en) * | 2019-06-12 | 2019-09-20 | 西安理工大学 | A kind of quiet dynamic triaxial tests device of temperature control based on MTS power source |
| CN111420717A (en) * | 2020-04-17 | 2020-07-17 | 中国航发北京航空材料研究院 | High-low temperature test box capable of changing temperature rapidly and used for dual-temperature-zone thermal mechanical fatigue test |
| CN113281192A (en) * | 2021-06-18 | 2021-08-20 | 中国船舶重工集团公司第七二五研究所 | Cold-hot alternating fatigue test method under constant stress |
| CN114812186A (en) * | 2022-04-24 | 2022-07-29 | 重庆大学 | A rapid cooling system for high temperature fatigue test |
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| CN103454165A (en) * | 2013-08-19 | 2013-12-18 | 北京航空航天大学 | Testing system for fatigue crack propagation test under high/low temperature environment |
| CN105021468A (en) * | 2015-07-06 | 2015-11-04 | 北京航空航天大学 | High-temperature creep fatigue test system |
| CN105424497A (en) * | 2015-12-14 | 2016-03-23 | 北京科技大学 | Service-environment-like simulating device for creep performance tests of pipe fittings |
| CN105527155A (en) * | 2015-12-24 | 2016-04-27 | 燕山大学 | High/low temperature fatigue test fixture suitable for round bar fatigue specimen |
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| CN103454165A (en) * | 2013-08-19 | 2013-12-18 | 北京航空航天大学 | Testing system for fatigue crack propagation test under high/low temperature environment |
| CN105021468A (en) * | 2015-07-06 | 2015-11-04 | 北京航空航天大学 | High-temperature creep fatigue test system |
| CN105424497A (en) * | 2015-12-14 | 2016-03-23 | 北京科技大学 | Service-environment-like simulating device for creep performance tests of pipe fittings |
| CN105527155A (en) * | 2015-12-24 | 2016-04-27 | 燕山大学 | High/low temperature fatigue test fixture suitable for round bar fatigue specimen |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106706323A (en) * | 2016-12-12 | 2017-05-24 | 北京航空航天大学 | Environment simulator used in extremely-high-temperature fatigue performance test of engine materials |
| CN106546630A (en) * | 2016-12-12 | 2017-03-29 | 北京航空航天大学 | A kind of environment simulator for the test of very high temperature Crack Extension performance |
| CN106680121B (en) * | 2016-12-23 | 2019-08-20 | 西南交通大学 | Synchrotron radiation in situ imaging fatigue tester and its test method containing temperature control mechanism |
| CN106680121A (en) * | 2016-12-23 | 2017-05-17 | 西南交通大学 | Synchrotron radiation in-situ imaging fatigue testing machine comprising temperature control mechanism and testing method of synchrotron radiation in-situ imaging fatigue testing machine |
| CN107084890A (en) * | 2017-05-11 | 2017-08-22 | 株洲时代新材料科技股份有限公司 | A kind of rail traffic vehicles anti-side rolling torsion rod thermocycling method and apparatus |
| CN107084890B (en) * | 2017-05-11 | 2020-04-10 | 株洲时代新材料科技股份有限公司 | High-low temperature test method and device for anti-side rolling torsion bar of rail transit vehicle |
| CN107917840A (en) * | 2017-09-29 | 2018-04-17 | 中国民航大学 | Mini-size self-control formula temperature fatigue testing machine |
| CN108375469A (en) * | 2018-02-12 | 2018-08-07 | 西北工业大学 | Rubber seal life predication apparatus and method |
| CN108844883A (en) * | 2018-05-24 | 2018-11-20 | 北京航空航天大学 | A kind of environment simulator for the damp and hot Mechanics Performance Testing of composite material |
| CN108844883B (en) * | 2018-05-24 | 2020-12-18 | 北京航空航天大学 | Environment simulation device for testing wet and hot mechanical properties of composite material |
| CN109612700A (en) * | 2018-12-11 | 2019-04-12 | 东南大学 | Components Performance Test System under deep cooling hyperbaric environment |
| CN110261231A (en) * | 2019-06-12 | 2019-09-20 | 西安理工大学 | A kind of quiet dynamic triaxial tests device of temperature control based on MTS power source |
| CN111420717A (en) * | 2020-04-17 | 2020-07-17 | 中国航发北京航空材料研究院 | High-low temperature test box capable of changing temperature rapidly and used for dual-temperature-zone thermal mechanical fatigue test |
| CN113281192A (en) * | 2021-06-18 | 2021-08-20 | 中国船舶重工集团公司第七二五研究所 | Cold-hot alternating fatigue test method under constant stress |
| CN114812186A (en) * | 2022-04-24 | 2022-07-29 | 重庆大学 | A rapid cooling system for high temperature fatigue test |
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Application publication date: 20161207 |