CN103175733B - Direct tensile test jag of incompressible material - Google Patents
Direct tensile test jag of incompressible material Download PDFInfo
- Publication number
- CN103175733B CN103175733B CN201310074358.4A CN201310074358A CN103175733B CN 103175733 B CN103175733 B CN 103175733B CN 201310074358 A CN201310074358 A CN 201310074358A CN 103175733 B CN103175733 B CN 103175733B
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- tensile test
- hole
- web joint
- test
- adapter clamp
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- 238000009864 tensile test Methods 0.000 title claims abstract description 25
- 239000000463 material Substances 0.000 title claims abstract description 22
- 238000012360 testing method Methods 0.000 claims abstract description 31
- 239000002184 metal Substances 0.000 claims abstract description 20
- 238000010276 construction Methods 0.000 claims description 4
- 230000001413 cellular effect Effects 0.000 claims 3
- 238000000034 method Methods 0.000 abstract description 10
- 239000004566 building material Substances 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 3
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910000954 Medium-carbon steel Inorganic materials 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention relates to a direct tensile test jig of an incompressible material, and belongs to the field of building material test devices. The direct tensile test jig is composed of fixed joints, switch chucks, connection boards, bolts and metal rods, solves a problem of test incompletion caused by data distortion even shedding because of the sliding of a test piece at the clamping end in the direct tensile test process of a present incompressible material, can reliably realize the direct tensile test of the incompressible material to accurately obtain the mechanical property parameters of the material, and has a certain application prospect.
Description
Technical field
The invention belongs to building materials test unit technical field, be specifically related to reliable retention and the loading of test specimen during the direct tensile test of incompressible material.
Background technology
Existing material tensile test device---universal testing machine, clamp body generally adopts high-quality medium carbon steel, structural alloy steel, or improves its mechanical property by suitable Technology for Heating Processing.The method of clamping of fixture mainly contains wedge shape class, to folder class, bolt class etc.
The advantage of these fixtures is:
1. clamping is reliable, without skidding;
2. the test force that can bear is larger.
But when being used for incompressible material, there are some problems in the method for clamping of above-mentioned routine: because directly clamp incompressible material, because distortion, producing bare terminal end slippage causes test figure distortion comparatively greatly, even produces come off thus cannot complete test when being out of shape excessive.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, disclose a kind of direct tensile test device being applicable to incompressible material, direct tensile test for incompressible material provides reliable method of clamping, thus provides possibility for the wood property parameter obtaining incompressible material accurately.
Technical solution of the present invention is:
A kind of tensile test fixture, be applicable to the direct tensile test to incompressible material, it is characterized in that, the structure of this tensile test fixture by up and down symmetrically two parts unit of relation form, every unit comprises fixture splice, adapter clamp, web joint, bolt, metal bar, wherein (for upper part):
Described fixture splice, its upper end perforate, is connected on testing machine by this hole, and its lower end is threaded rod;
Described adapter clamp is made up of two sections, and its epimere opens threaded hole, and this threaded hole is connected with the threaded rod of fixture splice, and its hypomere is thin bar, and thin bar offers hole in the horizontal direction;
Described web joint all offers hole up and down, and every two web joints are symmetrically arranged in the thin bar both sides of adapter clamp, the thin bar aligned of hole and adapter clamp on web joint, and by bolt through with the connection realized web joint and adapter clamp;
Described test specimen two ends are wrapped on metal bar respectively, and test specimen and metal bar entirety fold up between described two web joint lower ends, by metal bar cross-under in the lower hole of web joint.
The present invention has the following advantages relative to prior art:
Compared to existing technology, the direct tensile test that the present invention is incompressible material provides reliable method of clamping, in process of the test, bare terminal end slippage does not occur, for the accuracy of test findings provides safeguard.Be threaded owing to adopting between part, can ensure to rotate, simultaneously detachable.The invention solves in the direct tensile test process of existing incompressible material because the slippage of bare terminal end test specimen causes data distortion, even come off the problem causing and test and cannot complete, and apparatus of the present invention reliably can realize the direct tensile test of incompressible material, with the mechanical property parameters of this kind of material of Obtaining Accurate, there is certain application prospect.
Accompanying drawing explanation
Fig. 1 is tensile test fixture one-piece construction scheme of installation.
Fig. 2 is connecting board structure schematic diagram.
Description of symbols: hole 31 on fixture splice 1, adapter clamp 2, web joint 3, web joint, hole 32, bolt 4, metal bar 5, test specimen 6 under web joint.
Embodiment
Below in conjunction with accompanying drawing, technical solution of the present invention is described further.
Tensile test fixture of the present invention is applicable to the direct tensile test to incompressible material, and clamping is reliable, skidding can not occur.As shown in Figure 1 and Figure 2, the structure of this tensile test fixture is by mutually forming in laterally zygomorphic two parts, and every part is made up of six parts again, is respectively fixture splice 1, adapter clamp 2, two pieces of web joints 3, bolt 4, metal bars 5.Introduction is connected for six of upper part parts, wherein:
Fixture splice 1 upper end is connected with testing machine (not shown) by Metallic rod (not shown), and fixture splice 1 lower end is connected with adapter clamp 2 by threaded rod;
Adapter clamp 2 epimere opens threaded hole, and this threaded hole is connected with the threaded rod of fixture splice 1, hypomere thin bar is offered the hole of diameter 8mm;
Web joint 3 two pieces is arranged symmetrically with, and punches up and down.Described web joint 3, its upper end is 8mm by bolt 4 diameter described in bolt 4() be connected with adapter clamp 2 hypomere thin bar, its lower end is connected with test specimen 6 by metal bar 5.
Test specimen 6 two ends are wrapped in respectively on upper and lower metal bar 5 and implement to load.
Namely static structural characterization is:
The structure of this tensile test fixture by up and down symmetrically two parts unit of relation form, every unit comprises fixture splice 1, adapter clamp 2, web joint 3, bolt 4, metal bar 5, wherein:
Described fixture splice 1, its upper end perforate, is connected on testing machine by this hole, and its lower end is threaded rod;
Described adapter clamp 2 is made up of two sections, and its epimere opens threaded hole, and this threaded hole is connected with the threaded rod of fixture splice 1, and its hypomere is thin bar, and the horizontal direction of thin bar offers hole;
Described web joint about 3 all offers hole, and every two web joints are symmetrically arranged in the thin bar both sides of adapter clamp, the thin bar aligned of hole 31 and adapter clamp on web joint 3, and by bolt 4 through with the connection realized web joint and adapter clamp;
Described test specimen 6 two ends are wrapped on metal bar 5 respectively, and test specimen 6 and metal bar 5 entirety fold up between described two web joint 3 lower ends, by metal bar 5 cross-under in the lower hole 32 of web joint 3.Using a completed PVB material as subjects, carrying out direct tensile test is the concrete operations using method that example illustrates apparatus of the present invention.
1, first fixture splice 1 metal bar (not shown) is fixed on testing machine (not shown);
2, adapter clamp 2 one end with small-bore screw thread is connected with fixture splice 1 by screw thread, notes in connection procedure aiming at;
3, adapter clamp 2 other end is connected by bolt 4 with two web joints 3 of its avris;
4, two web joints 3 of lower end are then got in advance ready according to same being linked in sequence;
5, by test specimen 6(and PVB material) two ends be up and down wrapped on metal bar 5 respectively, by metal bar 5 test specimen 6 hung and is loaded between upper and lower two-part web joint 3, start test.
Test complete after, disassembly sequence is contrary with above-mentioned assembling process.
Claims (1)
1. a tensile test fixture, be applicable to, to the direct tensile test of incompressible material, it is characterized in that, the structure of this tensile test fixture by up and down symmetrically two parts unit of relation form, every unit comprises fixture splice, adapter clamp, web joint, bolt, metal bar, wherein:
Upper part cellular construction is:
Described fixture splice, its upper end perforate, is connected on testing machine by this hole, and its lower end is threaded rod;
Described adapter clamp is made up of two sections, and its epimere opens threaded hole, and this threaded hole is connected with the threaded rod of fixture splice, and its hypomere is thin bar, and the horizontal direction of thin bar offers hole;
Described web joint all offers hole up and down, and every two web joints are symmetrically arranged in the thin bar both sides of adapter clamp, the thin bar aligned of hole and adapter clamp on web joint, and by bolt through with the connection realized web joint and adapter clamp;
Test specimen two ends are wrapped on metal bar respectively, and test specimen and metal bar entirety fold up between described two web joint lower ends, by metal bar cross-under in the lower hole of web joint;
Lower part cellular construction and described upper part cellular construction full symmetric.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310074358.4A CN103175733B (en) | 2013-03-08 | 2013-03-08 | Direct tensile test jag of incompressible material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310074358.4A CN103175733B (en) | 2013-03-08 | 2013-03-08 | Direct tensile test jag of incompressible material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103175733A CN103175733A (en) | 2013-06-26 |
| CN103175733B true CN103175733B (en) | 2015-07-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310074358.4A Expired - Fee Related CN103175733B (en) | 2013-03-08 | 2013-03-08 | Direct tensile test jag of incompressible material |
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| Country | Link |
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| CN (1) | CN103175733B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104390854A (en) * | 2014-12-11 | 2015-03-04 | 四川元泰达有色金属材料有限公司 | Foamed aluminum tension detection fixture |
| CN104697873B (en) * | 2015-03-06 | 2017-08-25 | 合肥通用机械研究院 | A kind of sulfide-stress cracking experimental rig |
| CN105588749B (en) * | 2015-12-10 | 2019-02-22 | 福州大学 | A kind of devices and methods therefor for simulating elastic testing of materials test based on photo-elastic instrument |
| CN106153448B (en) * | 2016-06-29 | 2019-06-04 | 燕山大学 | A kind of fixture of sheet coupon stretching and cyclic compressive load test |
| CN107941627B (en) * | 2017-11-12 | 2020-06-19 | 潍坊科技学院 | Multi-parameter detection device and method for structural performance of ridge connecting piece of agricultural facility structure |
| CN111380753A (en) * | 2020-04-30 | 2020-07-07 | 中国飞机强度研究所 | Testing device and method for tensile mechanical property of woven material |
| CN114518286B (en) * | 2022-01-11 | 2023-09-22 | 中国人民解放军国防科技大学 | Tensile member mounting fixture for mechanical tensile test |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201107231Y (en) * | 2007-08-27 | 2008-08-27 | 济南试金集团有限公司 | Winding type wideband drawing clamp |
| CN102680320B (en) * | 2012-06-08 | 2013-12-04 | 哈尔滨工业大学 | Fixture for testing tensile properties of ultrathin flexible membrane materials |
| CN102830013A (en) * | 2012-08-21 | 2012-12-19 | 无锡通用钢绳有限公司 | Clamping device of steel wire rope tension tester |
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2013
- 2013-03-08 CN CN201310074358.4A patent/CN103175733B/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN103175733A (en) | 2013-06-26 |
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