CN102353578A - Testing device for two-way loading test of material - Google Patents
Testing device for two-way loading test of material Download PDFInfo
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- CN102353578A CN102353578A CN2011102959550A CN201110295955A CN102353578A CN 102353578 A CN102353578 A CN 102353578A CN 2011102959550 A CN2011102959550 A CN 2011102959550A CN 201110295955 A CN201110295955 A CN 201110295955A CN 102353578 A CN102353578 A CN 102353578A
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Abstract
The invention relates to a testing device for a two-way loading test of a material, which comprises three parts, namely a base, a lever structure and a chuck, wherein the base is arranged at the bottom of the testing device; and the lever structure and the chuck are respectively arranged on the base. Compared with the prior art, the testing device disclosed by the invention has a simple structure, is convenience for maintenance and can be used for conveniently finishing a test object and adjusting the loading proportion; in addition, the testing device can carry out the two-way loading test on a universal testing machine so as to reduce the test cost; and the testing device has the advantages of enough loading precision and the like.
Description
Technical field
The present invention relates to a kind of testing of materials device, especially relate to a kind of test unit that carries out two-way load test to the composite laminated plate plate tensile sample.
Background technology
The application of compound substance in aviation field more and more widely still for the research of composite material strength, also concentrate under the situation of unidirectional stand under load mostly, and in the reality, in most cases, what compound substance was suffered all is complex load.Obviously; The intensity of only studying under its unidirectional load is far from being enough; No matter be, still, all need carry out two-way load test to the compound substance sample from the destruction of damage angle discussion compound substance under complex stress condition to the criterion of strength checking that experimentizes.
Two-way load test does not also form the method for standard, and at present, two-way load test generally is divided into two big types: (1) uses the uniaxial loading system to carry out the twin shaft load test; (2) with two or more independently loading system carry out the twin shaft load test.
The first kind mainly comprises the off-axis tension test and utilizes certain physical construction that the cruciform testpieces is carried out two-way loading.
1, off-axis tension test.Though this method can make the material production complex stress condition, this method the loading ratio that can produce depend on the fiber angle of testpieces and can not choose arbitrarily, thereby receive very big restriction.
2, utilize certain physical construction that the cruciform testpieces is carried out two-way loading.This method is the present emphasis of a lot of scholar's research, but a lot of design proposals all exist can not be random the defective of choosing the loading ratio.
Second type mainly comprise the tension and compression of thin cylinder and reverse or in pressure/external pressure composite test and with two or more independently loading system the cruciform testpieces is carried out the twin shaft load test.
1, the tension and compression of thin cylinder and reverse or in pressure/external pressure composite test.The thin cylinder test is more common method, can carry out the loading of arbitrary proportion.But also there are some shortcomings in this method, and the geometry deformation that often possibly occur in difference, the loading procedure to some extent in multiple elastic instability and the loading procedure like the performance of tubular material and board-like material often is left in the basket etc. to result's influence;
2, with two or more independently loading system the cruciform testpieces is carried out the twin shaft load test.Though this test method can be chosen loading ratio arbitrarily and make an experiment, because the complex structure of whole test equipment, cost is very high, and control system is also proposed very high requirement, has limited the application of this method.
Summary of the invention
The object of the invention is exactly for the defective that overcomes above-mentioned prior art existence a kind of simple in equipment to be provided, and is convenient to safeguard the convenient test unit that is used to carry out the two-way load test of material of regulating the loading ratio.
The object of the invention can be realized through following technical scheme:
A kind of test unit that is used to carry out the two-way load test of material is made up of base, lever construction, chuck three parts, and described base is located at the bottom, and described lever construction and chuck are installed on the base.
Described base comprises slide rail, pulley, chassis and bottom connector, and described pulley is installed on the chassis, and described slide rail is connected with pulley, and described bottom connector is arranged on the central authorities of tray bottom, and the bottom connector can connect universal testing machine.
Described pulley is provided with 8, is evenly distributed on the excircle on chassis.
Described lever construction comprises lever, turnbuckle, steel wire and top attachment part; Described lever is provided with three grades; Connect through turnbuckle between the levers at different levels; Described steel wire is walked around pulley and is connected on the chuck; Described top attachment part is located at the top of higher level's lever, and the top attachment part can connect universal testing machine.
Described chuck is a self-fastening chuck, is installed on the slide rail on the base.
The work maximum load of this test unit is 10KN.
The material of this test unit adopts No. 45 steel.
The present invention can be installed on the universal testing machine through last lower link; Specially designed every the arm that has the testpieces of eight arms is grasped with chuck; Regulate and the joining turnbuckle of levers at different levels then; Make levers at different levels keep horizontality; Through regulating undermost turnbuckle, guarantee that every steel wire is in identical tension simultaneously.
The present invention has utilized lever principle; Can regulate the loading ratio easily; Except carrying out the loading ratio is 1: 1 waiting the two-way load test of axle; Can also be through the fixed position of bolt on the adjustment lever; Perhaps change the lever of different size, can realize the two-way load test of different loading ratios.
Compared with prior art, the present invention has the following advantages:
1, simple in equipment is convenient to safeguard, can accomplish test objective easily;
2, can conveniently regulate the loading ratio;
3, can on universal testing machine, realize two-way load test, reduce experimentation cost;
4, this equipment has enough loading accuracies.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Among the figure, 1 is that bottom connector, 2 is that chassis, 3 is that pulley, 4 is that slide rail, 5 is that steel wire, 6 is that turnbuckle, 7 is that first order lever, 8 is that second level lever, 9 is that third level lever, 10 is that top attachment part, 11 is that chuck, 12 is a testpieces.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is elaborated.
Embodiment
A kind of test unit that is used to carry out the two-way load test of material, its structure are made up of base, lever construction, chuck 11 3 parts as shown in Figure 1, and base is located at the bottom, and lever construction and chuck 11 are installed on the base.
Wherein, bottom connector 1, chassis 2, pulley 3 and slide rail 4 have constituted base; Steel wire 5, turnbuckle 6, first order lever 7, second level lever 8, third level lever 9 and top attachment part 10 have constituted lever construction; Chuck 11 is installed on the slide rail 4.
Pulley 3 is provided with 8, evenly is installed on the excircle on chassis 2, and slide rail 4 is connected with pulley 3, and bottom connector 1 is arranged on the central authorities of 2 bottoms, chassis, and bottom connector 1 can connect universal testing machine.First order lever 7, second level lever 8, third level lever 9 connect through turnbuckle 6 from bottom to top, and steel wire is walked around pulley 3 and is connected on the chuck 11, and top attachment part 10 is located at the top of third level lever 9, and top attachment part 10 can connect universal testing machine.The chuck 11 that uses is self-fastening chuck, is installed on the slide rail 4 on the base.
The work maximum load of this test unit is 10KN, and used material is No. 45 steel.
The present invention can be installed on the universal testing machine through bottom connector 1 and top attachment part 10; Specially designed every the arm that has the testpieces of eight arms is grasped with chuck; Regulate and the joining turnbuckle of levers at different levels then; Make levers at different levels keep horizontality; Through regulating undermost turnbuckle, guarantee that every steel wire is in identical tension simultaneously.
The present invention has utilized lever principle; Can regulate the loading ratio easily; Except carrying out the loading ratio is 1: 1 waiting the two-way load test of axle; Can also be through the fixed position of bolt on the adjustment lever; Perhaps change the lever of different size, can realize the two-way load test of different loading ratios.
Before making an experiment; At first top attachment part 10 and bottom connector 1 are separately fixed on the breadboard omnipotent loading tester; Testpieces 12 usefulness chucks 11 clampings that will post foil gauge then are firm; Make lever maintenance level through regulating the turnbuckle 6 that connects levers at different levels at last; And be that each steel wire is in identical tension; Open testing machine and load, obtain test figure through foil gauge.Should be noted that in the loading procedure to guarantee to load and be less than design load 10KN.
Claims (7)
1. a test unit that is used to carry out the two-way load test of material is characterized in that, this test unit is made up of base, lever construction, chuck three parts, and described base is located at the bottom, and described lever construction and chuck are installed on the base.
2. a kind of test unit that is used to carry out the two-way load test of material according to claim 1; It is characterized in that; Described base comprises slide rail, pulley, chassis and bottom connector; Described pulley is installed on the chassis; Described slide rail is connected with pulley; Described bottom connector is arranged on the central authorities of tray bottom, and the bottom connector can connect universal testing machine.
3. a kind of test unit that is used to carry out the two-way load test of material according to claim 2 is characterized in that described pulley is provided with 8, is evenly distributed on the excircle on chassis.
4. a kind of test unit that is used to carry out the two-way load test of material according to claim 1; It is characterized in that; Described lever construction comprises lever, turnbuckle, steel wire and top attachment part; Described lever is provided with three grades; Connect through turnbuckle between the levers at different levels; Described steel wire is walked around pulley and is connected on the chuck, and described top attachment part is located at the top of higher level's lever, and the top attachment part can connect universal testing machine.
5. a kind of test unit that is used to carry out the two-way load test of material according to claim 1 is characterized in that described chuck is a self-fastening chuck, is installed on the slide rail on the base.
6. a kind of test unit that is used to carry out the two-way load test of material according to claim 1 is characterized in that the work maximum load of this test unit is 10KN.
7. a kind of test unit that is used to carry out the two-way load test of material according to claim 1 is characterized in that, the material of this test unit adopts No. 45 steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110295955 CN102353578B (en) | 2011-09-30 | 2011-09-30 | Testing device for two-way loading test of material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110295955 CN102353578B (en) | 2011-09-30 | 2011-09-30 | Testing device for two-way loading test of material |
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| Publication Number | Publication Date |
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| CN102353578A true CN102353578A (en) | 2012-02-15 |
| CN102353578B CN102353578B (en) | 2013-09-11 |
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| CN 201110295955 Expired - Fee Related CN102353578B (en) | 2011-09-30 | 2011-09-30 | Testing device for two-way loading test of material |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102706731A (en) * | 2012-06-14 | 2012-10-03 | 河南理工大学 | Biaxial tension test device for testing performance of sheet metal |
| CN104180999A (en) * | 2013-05-28 | 2014-12-03 | 哈尔滨建成集团有限公司 | Structural member static strength test load transmission device |
| CN104316393A (en) * | 2014-10-11 | 2015-01-28 | 南京航空航天大学 | Loading device and method for material double-shaft tensile test |
| CN104502184A (en) * | 2014-12-09 | 2015-04-08 | 上海航天精密机械研究所 | Guide pipe inner pressure and displacement combined loading testing device |
| CN104849031A (en) * | 2015-04-27 | 2015-08-19 | 江西洪都航空工业集团有限责任公司 | Bidirectional loading module |
| CN104865123A (en) * | 2015-06-18 | 2015-08-26 | 沈阳飞机工业（集团）有限公司 | Strength and rigidity testing fixture for aircraft draw bar and use method of strength and rigidity testing fixture |
| CN105842055A (en) * | 2016-03-15 | 2016-08-10 | 北京航空航天大学 | Strength testing fixture using uniaxial testing machine for variable-proportion biaxial loading |
| CN106240842A (en) * | 2016-07-11 | 2016-12-21 | 中国飞机强度研究所 | A kind of asymmetric fuselage bulkhead four-point bending test method and device |
| CN109187179A (en) * | 2018-08-16 | 2019-01-11 | 东南大学 | A kind of biaxial tensile test calibration adjustment method based on cross testpieces |
| CN110514428A (en) * | 2019-09-24 | 2019-11-29 | 中国人民解放军空军工程大学 | A kind of bilateral loading platform for aviation connection structure testpieces |
| CN111289258A (en) * | 2020-03-20 | 2020-06-16 | 上海交通大学 | Static test device for straight reverse thrust cascade of aircraft engine |
| CN111678773A (en) * | 2020-05-06 | 2020-09-18 | 清华大学苏州汽车研究院（相城） | A test device that is arranged in universal tester strain rate to draw pressure loading |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87205653U (en) * | 1987-03-28 | 1987-12-02 | 华南工学院 | Mechanical double directions tensile tester |
| US20080034885A1 (en) * | 2003-10-28 | 2008-02-14 | Universidada Do Minho Of Largo Do Paco | Multiaxial Universal Testing Machine |
| CN101776553A (en) * | 2010-02-05 | 2010-07-14 | 河海大学 | Geosynthetic biaxial tension creep tester |
-
2011
- 2011-09-30 CN CN 201110295955 patent/CN102353578B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87205653U (en) * | 1987-03-28 | 1987-12-02 | 华南工学院 | Mechanical double directions tensile tester |
| US20080034885A1 (en) * | 2003-10-28 | 2008-02-14 | Universidada Do Minho Of Largo Do Paco | Multiaxial Universal Testing Machine |
| CN101776553A (en) * | 2010-02-05 | 2010-07-14 | 河海大学 | Geosynthetic biaxial tension creep tester |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102706731A (en) * | 2012-06-14 | 2012-10-03 | 河南理工大学 | Biaxial tension test device for testing performance of sheet metal |
| CN104180999A (en) * | 2013-05-28 | 2014-12-03 | 哈尔滨建成集团有限公司 | Structural member static strength test load transmission device |
| CN104316393A (en) * | 2014-10-11 | 2015-01-28 | 南京航空航天大学 | Loading device and method for material double-shaft tensile test |
| CN104502184A (en) * | 2014-12-09 | 2015-04-08 | 上海航天精密机械研究所 | Guide pipe inner pressure and displacement combined loading testing device |
| CN104849031A (en) * | 2015-04-27 | 2015-08-19 | 江西洪都航空工业集团有限责任公司 | Bidirectional loading module |
| CN104865123B (en) * | 2015-06-18 | 2018-03-20 | 沈阳飞机工业（集团）有限公司 | Plane draw bar intensity, stiffness test fixture and its application method |
| CN104865123A (en) * | 2015-06-18 | 2015-08-26 | 沈阳飞机工业（集团）有限公司 | Strength and rigidity testing fixture for aircraft draw bar and use method of strength and rigidity testing fixture |
| CN105842055A (en) * | 2016-03-15 | 2016-08-10 | 北京航空航天大学 | Strength testing fixture using uniaxial testing machine for variable-proportion biaxial loading |
| CN105842055B (en) * | 2016-03-15 | 2018-05-18 | 北京航空航天大学 | A kind of strength test fixture that control with changed scale Biaxial stress is carried out using single axis test machines |
| CN106240842A (en) * | 2016-07-11 | 2016-12-21 | 中国飞机强度研究所 | A kind of asymmetric fuselage bulkhead four-point bending test method and device |
| CN106240842B (en) * | 2016-07-11 | 2019-02-05 | 中国飞机强度研究所 | A kind of asymmetric fuselage bulkhead four-point bending test method and device |
| CN109187179A (en) * | 2018-08-16 | 2019-01-11 | 东南大学 | A kind of biaxial tensile test calibration adjustment method based on cross testpieces |
| CN109187179B (en) * | 2018-08-16 | 2021-06-11 | 东南大学 | Biaxial tension test calibration debugging method based on cross-shaped test piece |
| CN110514428A (en) * | 2019-09-24 | 2019-11-29 | 中国人民解放军空军工程大学 | A kind of bilateral loading platform for aviation connection structure testpieces |
| CN110514428B (en) * | 2019-09-24 | 2021-03-26 | 中国人民解放军空军工程大学 | Bidirectional loading test platform for aviation connection structure test piece |
| CN111289258A (en) * | 2020-03-20 | 2020-06-16 | 上海交通大学 | Static test device for straight reverse thrust cascade of aircraft engine |
| CN111678773A (en) * | 2020-05-06 | 2020-09-18 | 清华大学苏州汽车研究院（相城） | A test device that is arranged in universal tester strain rate to draw pressure loading |
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| CN102353578B (en) | 2013-09-11 |
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Granted publication date: 20130911 Termination date: 20160930 |