CN103439201A - System for testing fatigue in high/low temperature environment - Google Patents
System for testing fatigue in high/low temperature environment Download PDFInfo
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- CN103439201A CN103439201A CN2013103603449A CN201310360344A CN103439201A CN 103439201 A CN103439201 A CN 103439201A CN 2013103603449 A CN2013103603449 A CN 2013103603449A CN 201310360344 A CN201310360344 A CN 201310360344A CN 103439201 A CN103439201 A CN 103439201A
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Abstract
A system for testing the fatigue in a high/low temperature environment comprises a fatigue testing machine, an adapter, a sample clamp, a high/low temperature environment box, locating pins, a liquid nitrogen container and a sample, wherein the sample clamp is installed on the fatigue testing machine through the adapter, the sample is connected with the sample clamp and is located through the locating pins penetrating through the sample clamp and locating holes of the sample, the high/low temperature environment box wraps the sample clamp and the sample inside, the liquid nitrogen container and the high/low temperature environment box are connected to achieve the low temperature environment, wherein the fatigue testing machine, the adapter, the sample clamp, the locating pins and the sample are sequentially connected in series together. The system for testing the fatigue in the high/low temperature environment is simple in structure convenient to operate, and used to test the fatigue property in the high/low temperature environment, and the test result has important significance for defining the fatigue of a material or structure in the complicated meteorological environment.
Description
Technical field
The present invention relates to the torture test test macro under a kind of high/low temperature environment, belong to the experimental test technical field.
Background technology
Construction material and structure in use, are all being born alternate load, and fatigure failure can occur, and for ensureing its security, need its fatigue behaviour of test, through technical development for many years, have already formed perfect fatigue property test standard; But construction material and structure also usually are on active service and are used under cold or extremely hot environment, therefore, must measure the fatigue behaviour under its high/low environment, for assessment of the fatigue lifetime under its high/low temperature environment.At present, still immature to fatigue property test technology under high/low temperature environment both at home and abroad, and lack torture test test macro under effective high/low temperature environment, for this reason, the present invention is integrated into the torture test test macro under high/low temperature environment by plain fatigue testing machine, X-over, specimen holder, high/low temperature environmental cabinet, liquid nitrogen container and sample, for experiment on fatigue properties test under high/low temperature environment, it is significant that test result is determined the longevity for the fatigue of the material under the complicated meteorology environment or structure.
Summary of the invention
1, purpose: the object of the present invention is to provide the torture test test macro under a kind of high/low temperature environment, with the torture test test under high/low temperature environment for material or structure.
2, technical scheme: the torture test test macro under a kind of high/low temperature environment of the present invention is comprised of fatigue tester, X-over, specimen holder, high/low temperature environmental cabinet, tommy, liquid nitrogen container and sample.Position annexation between them is as follows: specimen holder is arranged on fatigue tester by X-over, and sample is connected with specimen holder, and positions by the pilot hole that tommy passes specimen holder and sample; High/low temperature environmental cabinet wraps in the inside by specimen holder and sample, and liquid nitrogen container is connected to realize low temperature environment with high/low temperature environmental cabinet.Wherein, fatigue tester, X-over, specimen holder, tommy and sample link together by series sequence:
Testing machine → upper X-over → upper specimen holder → tommy → sample → tommy → lower specimen holder → lower X-over → testing machine
Described fatigue tester is low-frequency fatigue test machine commonly used, in order to sample is applied to the alternation fatigue load, the load range of fatigue tester need be greater than the test load of sample, can be conventional fatigue tester or the self-control fatigue testers such as MTS, INSTRON.
The fatigue testing specimen that described sample is various different materials and type, this sample is the rectangular strip part that is provided with 3 holes, the bare terminal end at fatigue testing specimen two ends can link together with specimen holder, and applies the alternation fatigue load.
Described X-over is many Step Shafts shape part, in order to joint test machine and specimen holder, need, according to the version Design and manufacture of high/low temperature environmental cabinet, can adopt common alloy steel material to make.
Described specimen holder is that the rectangular-shaped piece in a cylinder and trough of belt and 5 holes combines, and in order to the clamping sample to be installed, need, according to the shape and size Design and manufacture of sample holder end, can and apply the alternation fatigue load by the sample firm grip.
Described high/low temperature environmental cabinet is the material test environmental cabinet, be the frame shape, can realize high/low temperature environment, hot environment can utilize the heating system of environmental cabinet to realize, low temperature environment can be realized by environmental cabinet being filled with to cooled with liquid nitrogen, heating power or the liquid nitrogen input quantity of case of controling environment can realize the adjusting to the different temperatures scope, and its temperature range will meet testing requirements.
Described liquid nitrogen container is the liquid nitrogen container configured as required.
Described tommy is the circular shaft part with a shoulder.
All devices, according to after the testing requirements connection and debugging, just can complete the torture test test under high/low temperature environment according to concrete testing requirements.This cover system efficiently solves the torture test test problem under high/low temperature environment.
3, advantage and effect: the invention has the beneficial effects as follows and can complete material or the torture test test of structure under high/low temperature environment, temperature can be regulated and controled according to concrete testing requirements.
The accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the center breach plate tensile sample schematic diagram for high/low temperature torture test.
Fig. 2 is the adapter coupling schematic diagram.
Fig. 3 is the specimen holder schematic diagram.
Fig. 4 is the tommy schematic diagram.
Fig. 5 is the fatigue tester schematic diagram.
Fig. 6 is the torture test test system structure figure under high/low temperature environment.
In Fig. 6: 1. fatigue tester, 2. X-over, 3. high/low temperature environmental cabinet, 4. sample, 5. specimen holder, 6. liquid nitrogen container, 7. tommy.
Embodiment
Embodiment one: the specific embodiment of the present invention is described in conjunction with Fig. 1 to Fig. 6.
Torture test test macro under a kind of high/low temperature environment of the present invention, be comprised of fatigue tester 1, X-over 2, specimen holder 5, high/low temperature environmental cabinet 3, tommy 7, liquid nitrogen container 6 and sample 4.In Fig. 6, specimen holder 5 is connected with sample 4, and the pilot hole through specimen holder 3 and sample 4 positions by tommy 4, can guarantee that sample 4 evenly axially loads; By adapter coupling 2, fatigue tester 5 is connected with specimen holder 3; Liquid nitrogen container 6 is connected with high/low temperature environmental cabinet 3, forms the torture test test macro under high/low temperature environment.
In high/low temperature torture test, the design of sample is very crucial, must be able to guarantee evenly to apply axial alternate load, Fig. 1 has specifically provided a kind of center for high/low temperature torture test breach plate tensile sample, concrete dimensional parameters can be referring to Fig. 1, retaining part at the sample two ends has designed pilot hole, can play the axial location effect.The dimensional parameters of specimen holder 3 as shown in Figure 3, has hole and a pilot hole of four fastening bolts.The concrete dimensional parameters of adapter coupling 2 and tommy 7 as shown in Figure 2 and Figure 4.Fatigue tester as shown in Figure 5, can use fatigue tester or the self-control fatigue testers such as commercial MTS, INSTRON.After sample 4 and specimen holder 3 are connected to location by tommy 7 and clamp with fastening bolt, then by adapter coupling 2, specimen holder 3 is connected with the fatigue tester 1 that is equipped with high/low temperature environmental cabinet 3.Liquid nitrogen container 6 is connected with high/low temperature environmental cabinet 3.Set actual temp according to testing requirements, so just can complete the high/low temperature torture test of center breach plate tensile sample.
Embodiment two: the difference of present embodiment and embodiment one is the design of sample, sample can be center band perforate or not with the plate of perforate, dimensional parameters can be from embodiment one different, other design philosophy and connected mode of the torture test test macro under high/low temperature environment is identical with embodiment one.
Embodiment three: the difference of present embodiment and embodiment one is the design of sample, sample can clavate or other versions, other design philosophy and connected mode of the torture test test macro under high/low temperature environment is identical with embodiment one.
Claims (1)
1. the torture test test macro under a high/low temperature environment, it is characterized in that: it is comprised of fatigue tester, X-over, specimen holder, high/low temperature environmental cabinet, tommy, liquid nitrogen container and sample; Specimen holder is arranged on fatigue tester by X-over, and sample is connected with specimen holder, and positions by the pilot hole that tommy passes specimen holder and sample; High/low temperature environmental cabinet wraps in the inside by specimen holder and sample, and liquid nitrogen container is connected to realize low temperature environment with high/low temperature environmental cabinet; Wherein, fatigue tester, X-over, specimen holder, tommy and sample link together by series sequence:
Testing machine → upper X-over → upper specimen holder → tommy → sample → tommy → lower specimen holder → lower X-over → testing machine
Described fatigue tester is commonly used or self-control low-frequency fatigue test machine, and in order to sample is applied to the alternation fatigue load, the load range of fatigue tester need be greater than the test load of sample;
The fatigue testing specimen that described sample is various different materials and type, this sample is the rectangular strip part that is provided with 3 holes, the bare terminal end at fatigue testing specimen two ends can link together with specimen holder, and applies the alternation fatigue load;
Described X-over is many Step Shafts shape part, in order to joint test machine and specimen holder, need, according to the version Design and manufacture of high/low temperature environmental cabinet, adopt common alloy steel material to make;
Described specimen holder is that the rectangular-shaped piece in a cylinder and trough of belt and 5 holes combines, and in order to the clamping sample to be installed, need, according to the shape and size Design and manufacture of sample holder end, can and apply the alternation fatigue load by the sample firm grip;
Described high/low temperature environmental cabinet is the material test environmental cabinet, be the frame shape, can realize high/low temperature environment, hot environment can utilize the heating system of environmental cabinet to realize, low temperature environment can be realized by environmental cabinet being filled with to cooled with liquid nitrogen, the heating power of case or the liquid nitrogen input quantity of controling environment realizes the adjusting to the different temperatures scope, and its temperature range will meet testing requirements;
Described liquid nitrogen container is the liquid nitrogen container configured as required;
Described tommy is the circular shaft part with a shoulder.
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| CN2013103603449A CN103439201A (en) | 2013-08-19 | 2013-08-19 | System for testing fatigue in high/low temperature environment |
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| CN2013103603449A CN103439201A (en) | 2013-08-19 | 2013-08-19 | System for testing fatigue in high/low temperature environment |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103674681A (en) * | 2013-12-12 | 2014-03-26 | 中国建筑股份有限公司 | Steel strand mechanical testing device in ultra-low-temperature environment and testing method thereof |
| CN104019970A (en) * | 2014-05-20 | 2014-09-03 | 北京航空航天大学 | Testing system for testing fatigue performance of helicopter tail rotor |
| CN104034600A (en) * | 2014-05-20 | 2014-09-10 | 北京航空航天大学 | Fatigue crack propagation experiment testing system under extremely high temperature environment |
| CN104034599A (en) * | 2014-05-20 | 2014-09-10 | 北京航空航天大学 | Experiment system for testing super-high temperature fatigue S-N curve of engine material |
| CN104155087A (en) * | 2014-05-20 | 2014-11-19 | 北京航空航天大学 | Fixed-wing aircraft rudder fatigue test system |
| CN105021473A (en) * | 2015-07-06 | 2015-11-04 | 北京航空航天大学 | Cryogenic crack expansibility characterization and life estimation method |
| CN105067254A (en) * | 2015-08-26 | 2015-11-18 | 中国电力科学研究院 | Fatigue testing apparatus for member |
| CN109632525A (en) * | 2019-01-16 | 2019-04-16 | 吉林大学 | A kind of the fibre reinforced materials built-in fitting bonding strength test device and calculation method in full service temperature section |
| CN109870375A (en) * | 2019-03-14 | 2019-06-11 | 华东理工大学 | A kind of low temperature high frequency fatigue test system |
| CN110542645A (en) * | 2019-09-19 | 2019-12-06 | 中航复合材料有限责任公司 | Environmental test device suitable for composite material component |
| CN111307626A (en) * | 2020-04-15 | 2020-06-19 | 上海市特种设备监督检验技术研究院 | Underlying loading type low-temperature fatigue test device |
| CN114608954A (en) * | 2022-04-02 | 2022-06-10 | 华东理工大学 | Material fatigue performance test system under low-temperature liquid oxygen environment |
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| CN201903484U (en) * | 2010-12-14 | 2011-07-20 | 中国地质大学（武汉） | Special testing box of loading system for MTS structure testing in high/low-temperature environment |
| CN102297804A (en) * | 2010-06-23 | 2011-12-28 | 中国科学院金属研究所 | Metal plate specimen water-cooling clamp for high temperature fatigue test |
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2013
- 2013-08-19 CN CN2013103603449A patent/CN103439201A/en active Pending
Patent Citations (4)
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| JPH09138190A (en) * | 1995-11-16 | 1997-05-27 | Mitsubishi Heavy Ind Ltd | Fatigue testing device |
| CN201622210U (en) * | 2010-03-16 | 2010-11-03 | 陈跃良 | Adjustable fretting fatigue tester |
| CN102297804A (en) * | 2010-06-23 | 2011-12-28 | 中国科学院金属研究所 | Metal plate specimen water-cooling clamp for high temperature fatigue test |
| CN201903484U (en) * | 2010-12-14 | 2011-07-20 | 中国地质大学（武汉） | Special testing box of loading system for MTS structure testing in high/low-temperature environment |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103674681A (en) * | 2013-12-12 | 2014-03-26 | 中国建筑股份有限公司 | Steel strand mechanical testing device in ultra-low-temperature environment and testing method thereof |
| CN104019970A (en) * | 2014-05-20 | 2014-09-03 | 北京航空航天大学 | Testing system for testing fatigue performance of helicopter tail rotor |
| CN104034600A (en) * | 2014-05-20 | 2014-09-10 | 北京航空航天大学 | Fatigue crack propagation experiment testing system under extremely high temperature environment |
| CN104034599A (en) * | 2014-05-20 | 2014-09-10 | 北京航空航天大学 | Experiment system for testing super-high temperature fatigue S-N curve of engine material |
| CN104155087A (en) * | 2014-05-20 | 2014-11-19 | 北京航空航天大学 | Fixed-wing aircraft rudder fatigue test system |
| CN105021473B (en) * | 2015-07-06 | 2017-07-11 | 北京航空航天大学 | A kind of low-temperature cracks scalability characterizes the method with life estimate |
| CN105021473A (en) * | 2015-07-06 | 2015-11-04 | 北京航空航天大学 | Cryogenic crack expansibility characterization and life estimation method |
| CN105067254A (en) * | 2015-08-26 | 2015-11-18 | 中国电力科学研究院 | Fatigue testing apparatus for member |
| CN109632525A (en) * | 2019-01-16 | 2019-04-16 | 吉林大学 | A kind of the fibre reinforced materials built-in fitting bonding strength test device and calculation method in full service temperature section |
| CN109870375A (en) * | 2019-03-14 | 2019-06-11 | 华东理工大学 | A kind of low temperature high frequency fatigue test system |
| CN110542645A (en) * | 2019-09-19 | 2019-12-06 | 中航复合材料有限责任公司 | Environmental test device suitable for composite material component |
| CN111307626A (en) * | 2020-04-15 | 2020-06-19 | 上海市特种设备监督检验技术研究院 | Underlying loading type low-temperature fatigue test device |
| CN114608954A (en) * | 2022-04-02 | 2022-06-10 | 华东理工大学 | Material fatigue performance test system under low-temperature liquid oxygen environment |
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