CN103852381A - Multi-sample continuous testing device for breaking tenacity of materials in liquid helium temperature region - Google Patents
Multi-sample continuous testing device for breaking tenacity of materials in liquid helium temperature region Download PDFInfo
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- CN103852381A CN103852381A CN201210523670.2A CN201210523670A CN103852381A CN 103852381 A CN103852381 A CN 103852381A CN 201210523670 A CN201210523670 A CN 201210523670A CN 103852381 A CN103852381 A CN 103852381A
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Abstract
The invention belongs to the technical field of mechanical properties of materials and particularly relates to a multi-sample continuous testing device for breaking tenacity of materials in a liquid helium temperature region. The device comprises an electro-hydraulic servo fatigue testing machine, a rigid support, a multi-sample automatic sample replacing mechanism, a computer control system, a low-temperature dewar, a liquid injection output pipeline, and a liquid helium liquid level meter. With the adoption of the device, the technical problems of an existing testing device for the breaking tenacity of the materials in the liquid helium temperature region that one-time sampling feeding only can test a single sample and the consumed amount of liquid helium is great are solved. The device is matched with the computer control system by the multi-sample automatic sample replacing mechanism so as to realize multi-sample automatic sample replacing; the plurality of samples can be continuously tested by one-time sample feeding and the breaking tenacity data test can be continuously carried out so that the utilization efficiency is high, the use amount of the liquid helium is high, the use amount of the liquid helium is saved and the testing cost can be greatly reduced; the system is stable and accurate to operate, is high in intelligent degree and is reliable in structure.
Description
Technical field
The invention belongs to material mechanical performance technical field of measurement and test, be specifically related to a kind of many samples of liquid helium warm area material fracture toughness continuous test device.
Background technology
Along with the development in the fields such as China's controlled nuclear fusion, Aero-Space, superconductor technology, relate to a large amount of engineering projects that material is on active service in utmost point low temperature environment more and more, wherein superconductor technology is as one of core technology of following nuclear fusion engineering field, increasing to the demand of cryogenic material.For the metal material using in a large number, need to test its cryogenic property simultaneously, improve material property database, to expand its usable range.
Fracture toughness is the Roughness Parameter of material opposing brittle rupture, is in fracturing mechanics, to think can reflect and the performance index of material opposing instable growth of crack ability the Intensity Design tool of member is of great significance.When material is worked in low temperature environment, its toughness is compared with there being larger variation under room temperature, and material toughness data at low temperatures relates to reference data indispensable in the cryogenic engineering project implementation.
The at present at room temperature existing research comparatively widely of fracture toughness of material, and the various device that is applicable to this performance test is produced in batches.For the fracture toughness test of the lower material of utmost point low temperature (4.2K/-269 ℃), relevant device loading sample once only can be tested individual sample at present, and efficiency is lower, and consumption liquid helium amount is larger, and testing cost is high.
Summary of the invention
The technical issues that need to address of the present invention are: existing liquid helium warm area material fracture toughness proving installation, and loading sample once only can be tested individual sample, and efficiency is lower, and consumption liquid helium amount is larger, and testing cost is high.
Technical scheme of the present invention is as described below:
A kind of many samples of liquid helium warm area material fracture toughness continuous test device, comprising: electo hydraulic servocontrolled fatigue testing machine, rigid support, many samples automatic sample-changing mechanism, computer control system, cooled cryostat and liquid inject output channel;
Electo hydraulic servocontrolled fatigue testing machine comprises actuator, and actuator upper end is provided with load transducer and displacement transducer;
Described many samples automatic sample-changing mechanism comprises a sample pallet and a rotation connecting rod, and described rotation connecting rod is fixed on sample pallet top, can drive sample pallet along continuous straight runs to rotate; Sample pallet circumferencial direction is placed multiple samples to be tested, computer control system is connected with described rotation connecting rod, computer control system is rotated connecting rod by control and is rotated the accurate Control Assay pallet anglec of rotation, and then realizes actuator and be connected with multiple samples to be tested;
Described cooled cryostat is hollow cavity, and the rotation connecting rod of many samples automatic sample-changing mechanism passes cooled cryostat upper surface with the form of motive seal, and the rigidity sample pallet of many samples automatic sample-changing mechanism is positioned over cooled cryostat inside;
Rigid support connects cooled cryostat and electo hydraulic servocontrolled fatigue testing machine;
Described liquid injects output channel and connects liquid helium tank and cooled cryostat inside.
As preferred version,
Cooled cryostat inside is provided with liquid helium liquid level meter, according to liquid helium liquid level meter monitor data, computer control system is injected output channel to liquid and is controlled: when the inner liquid helium liquid level of cooled cryostat is lower than setting value, automatic liquid supply, stops fluid infusion automatically until reach setting value.
As further preferred version,
Connect actuator and sample to be tested by fracture toughness test fixture: fracture toughness test fixture upper end is threaded connection mode and is connected with actuator lower end, fracture toughness test fixture lower end can clamp sample, makes actuator and sample to be tested realize accurate connection.
In addition, electo hydraulic servocontrolled fatigue testing machine can also comprise: cruciform girder and rigid base, and described cruciform girder, rigid base connect by two rigid posts, form the rigid frame of electo hydraulic servocontrolled fatigue testing machine; Described actuator runs through cruciform girder, and can pump in cruciform girder inside, for testing sample provides load power source.
Beneficial effect of the present invention is:
(1) many samples of liquid helium warm area material fracture toughness continuous test device of the present invention, can the fracture toughness of test material under liquid helium warm area (4.2K/-269 ℃), realize many samples automatic sample-changing, loading sample once can the multiple samples of follow-on test, consumption liquid helium amount is extremely low, service efficiency is high, has higher economic worth;
(2) many samples of liquid helium warm area material fracture toughness continuous test device of the present invention, by being used in conjunction with of many samples automatic sample-changing mechanism and computer control system, operates steadily, accurately, and reliable in structure, intelligent degree are high.
Accompanying drawing explanation
Fig. 1 is many samples of liquid helium warm area material fracture toughness continuous test device structural representation of the present invention.
In figure, 1-electo hydraulic servocontrolled fatigue testing machine; 2-rigid support; Many samples of 3-automatic sample-changing mechanism; 4-computer control system; 5-fracture toughness test fixture; 6-cooled cryostat; 7-liquid injects output channel; 8-liquid helium liquid level meter; 9-actuator; 10-sample to be tested.
Embodiment
Below in conjunction with drawings and Examples, many samples of liquid helium warm area material fracture toughness continuous test device of the present invention is elaborated.
As shown in Figure 1, many samples of liquid helium warm area material fracture toughness continuous test device of the present invention comprises: electo hydraulic servocontrolled fatigue testing machine 1, rigid support 2, many samples automatic sample-changing mechanism 3, computer control system 4, cooled cryostat 6, liquid inject output channel 7 and liquid helium liquid level meter 8.
Electo hydraulic servocontrolled fatigue testing machine 1 comprises: cruciform girder, rigid base and actuator 9.Described cruciform girder, rigid base connect by two rigid posts, form the rigid frame of electo hydraulic servocontrolled fatigue testing machine 1; Described actuator 9 runs through cruciform girder, and can pump in cruciform girder inside, for sample to be tested 10 provides load power source; Described actuator 9 upper ends are provided with load transducer and displacement transducer, are respectively used to monitor load and the displacement of actuator 9.
Described many samples automatic sample-changing mechanism 3 comprises a rigidity sample pallet and a rotation connecting rod, and described rotation connecting rod is fixed on sample pallet top, can drive sample pallet along continuous straight runs to rotate.Sample pallet circumferencial direction is placed multiple samples to be tested 10, computer control system 4 is connected with described rotation connecting rod, computer control system 4 is rotated connecting rod by control and is rotated the accurate Control Assay pallet anglec of rotation, and then realizes actuator 9 and be connected with multiple samples to be tested 10.
In the present embodiment, connect actuator 9 and sample to be tested 10 by fracture toughness test fixture 5: fracture toughness test fixture 5 upper ends are threaded connection mode and are connected with actuator 9 lower ends, fracture toughness test fixture 5 lower ends can clamp sample 10, make actuator 9 realize accurate connection with sample to be tested 10.
Described cooled cryostat 6 is hollow cavity, and the rotation connecting rod of many samples automatic sample-changing mechanism 3 passes cooled cryostat 6 upper surfaces with the form of motive seal, and the rigidity sample pallet of many samples automatic sample-changing mechanism 3 is positioned over cooled cryostat 6 inside.
Described liquid injects output channel 7 and connects liquid helium tank and cooled cryostat 6 inside, realizes liquid helium and injects and reclaim.Cooled cryostat 6 inside are provided with liquid helium liquid level meter 8, for the real-time inner liquid helium liquid level of monitoring low temperature Dewar 6.According to liquid helium liquid level meter 8 monitor datas, computer control system 4 is injected output channel 7 to liquid and is controlled: when the inner liquid helium liquid level of cooled cryostat 6 is lower than setting value, automatic liquid supply, stops fluid infusion automatically until reach setting value.
Many samples of liquid helium warm area material fracture toughness continuous test device course of work of the present invention is as described below:
Actuator 9 connects fracture toughness test fixture 5, the mechanical loading of electo hydraulic servocontrolled fatigue testing machine 1 can be loaded on to sample 10, load and the displacement signal of sample 10 are passed to respectively load transducer and the displacement transducer on electo hydraulic servocontrolled fatigue testing machine 1 simultaneously, and then carry out fracture toughness test.After single test completes, order many samples automatic sample-changing mechanism 3 intelligence to be varied by computer control system 4, realize uninterrupted follow-on test.In process of the test, the interior liquid height of liquid helium liquid level meter 8 real-time monitoring low temperature Dewar 6, guarantees to test omnidistance sample to be tested 10 and is immersed in liquid helium, and test environment does not change.
In sum, many samples of liquid helium warm area material fracture toughness continuous test device of the present invention, take electo hydraulic servocontrolled fatigue testing machine as basis, utilizes liquid helium as heat eliminating medium, realizes the measurement of fracture toughness under low temperature (4.2K/-269 ℃) environment.The present invention is used in conjunction with by many samples automatic sample-changing mechanism and computer control system, realize many samples automatic sample-changing under low temperature, uninterruptedly carry out toughness data test, service efficiency is high, save liquid helium use amount, can significantly reduce testing cost, and system operates steadily, accurately, intelligent degree is high, reliable in structure.
Claims (4)
1. many samples of liquid helium warm area material fracture toughness continuous test device, comprising: electo hydraulic servocontrolled fatigue testing machine (1), rigid support (2), many samples automatic sample-changing mechanism (3), computer control system (4), cooled cryostat (6) and liquid inject output channel (7); It is characterized in that:
Electo hydraulic servocontrolled fatigue testing machine (1) comprises actuator (9), and actuator (9) upper end is provided with load transducer and displacement transducer;
Described many samples automatic sample-changing mechanism (3) comprises a sample pallet and a rotation connecting rod, and described rotation connecting rod is fixed on sample pallet top, can drive sample pallet along continuous straight runs to rotate; Sample pallet circumferencial direction is placed multiple samples to be tested (10), computer control system (4) is connected with described rotation connecting rod, computer control system (4) is rotated connecting rod by control and is rotated the accurate Control Assay pallet anglec of rotation, and then realizes actuator (9) and be connected with multiple samples to be tested (10);
Described cooled cryostat (6) is hollow cavity, the rotation connecting rod of many samples automatic sample-changing mechanism (3) passes cooled cryostat (6) upper surface with the form of motive seal, and the rigidity sample pallet of many samples automatic sample-changing mechanism (3) is positioned over cooled cryostat (6) inside;
Rigid support (2) connects cooled cryostat (6) and electo hydraulic servocontrolled fatigue testing machine (1);
Described liquid injects output channel (7) and connects liquid helium tank and cooled cryostat (6) inside.
2. many samples of liquid helium warm area material fracture toughness continuous test device according to claim 1, it is characterized in that: cooled cryostat (6) inside is provided with liquid helium liquid level meter (8), according to liquid helium liquid level meter (8) monitor data, computer control system (4) is injected output channel (7) to liquid and is controlled: when the inner liquid helium liquid level of cooled cryostat (6) is lower than setting value, automatic liquid supply, stops fluid infusion automatically until reach setting value.
3. many samples of liquid helium warm area material fracture toughness continuous test device according to claim 1 and 2, it is characterized in that: connect actuator (9) and sample to be tested (10) by fracture toughness test fixture (5): fracture toughness test fixture (5) upper end is threaded connection mode and is connected with actuator (9) lower end, fracture toughness test fixture (5) lower end can clamp sample (10), makes actuator (9) and sample to be tested (10) can realize accurate connection.
4. many samples of liquid helium warm area material fracture toughness continuous test device according to claim 1 and 2, it is characterized in that: electo hydraulic servocontrolled fatigue testing machine (1) also comprises: cruciform girder and rigid base, described cruciform girder, rigid base connect by two rigid posts, form the rigid frame of electo hydraulic servocontrolled fatigue testing machine (1); Described actuator (9) runs through cruciform girder, and can pump in cruciform girder inside, for sample to be tested (10) provides load power source.
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| CN201210523670.2A CN103852381A (en) | 2012-12-07 | 2012-12-07 | Multi-sample continuous testing device for breaking tenacity of materials in liquid helium temperature region |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105806693A (en) * | 2014-12-29 | 2016-07-27 | 核工业西南物理研究院 | Supercritical water oxidation environment material fatigue performance test device |
| CN106644748A (en) * | 2016-10-27 | 2017-05-10 | 长春机械科学研究院有限公司 | Device suitable for compression mechanical performance test and bending mechanical performance test under high-temperature vacuum environment |
| CN108871969A (en) * | 2018-06-28 | 2018-11-23 | 合肥科烨电物理设备制造有限公司 | The device and method of bellows fatigue at low temperatures test |
| CN114184917A (en) * | 2021-12-10 | 2022-03-15 | 国网安徽省电力有限公司超高压分公司 | Device and method for testing electrical characteristics of insulating paperboard |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60235037A (en) * | 1984-05-07 | 1985-11-21 | Yoshirou Kahou | Tensile tester of test piece |
| JPS61207947A (en) * | 1985-03-13 | 1986-09-16 | Hitachi Ltd | Very low temperature tension testing device |
| CN2575654Y (en) * | 2002-10-31 | 2003-09-24 | 北京有色金属研究总院 | Double-air chamber & double-measuring range Co2 infrared analyzer |
| CN201269843Y (en) * | 2008-09-25 | 2009-07-08 | 中国科学院理化技术研究所 | Experiment jig for test compression mechanical performance of material |
| WO2012015167A2 (en) * | 2010-07-30 | 2012-02-02 | Lee Chong Soo | Apparatus having circulation type coolant sprayer attached for conducting low temperature pyro tests and method for same |
-
2012
- 2012-12-07 CN CN201210523670.2A patent/CN103852381A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60235037A (en) * | 1984-05-07 | 1985-11-21 | Yoshirou Kahou | Tensile tester of test piece |
| JPS61207947A (en) * | 1985-03-13 | 1986-09-16 | Hitachi Ltd | Very low temperature tension testing device |
| CN2575654Y (en) * | 2002-10-31 | 2003-09-24 | 北京有色金属研究总院 | Double-air chamber & double-measuring range Co2 infrared analyzer |
| CN201269843Y (en) * | 2008-09-25 | 2009-07-08 | 中国科学院理化技术研究所 | Experiment jig for test compression mechanical performance of material |
| WO2012015167A2 (en) * | 2010-07-30 | 2012-02-02 | Lee Chong Soo | Apparatus having circulation type coolant sprayer attached for conducting low temperature pyro tests and method for same |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105806693A (en) * | 2014-12-29 | 2016-07-27 | 核工业西南物理研究院 | Supercritical water oxidation environment material fatigue performance test device |
| CN106644748A (en) * | 2016-10-27 | 2017-05-10 | 长春机械科学研究院有限公司 | Device suitable for compression mechanical performance test and bending mechanical performance test under high-temperature vacuum environment |
| CN108871969A (en) * | 2018-06-28 | 2018-11-23 | 合肥科烨电物理设备制造有限公司 | The device and method of bellows fatigue at low temperatures test |
| CN114184917A (en) * | 2021-12-10 | 2022-03-15 | 国网安徽省电力有限公司超高压分公司 | Device and method for testing electrical characteristics of insulating paperboard |
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Application publication date: 20140611 |