CN102507343A - Test piece for shape memory alloy pulling and twisting experiment, fixture and device therefor - Google Patents

Test piece for shape memory alloy pulling and twisting experiment, fixture and device therefor Download PDF

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Publication number
CN102507343A
CN102507343A CN2011103099922A CN201110309992A CN102507343A CN 102507343 A CN102507343 A CN 102507343A CN 2011103099922 A CN2011103099922 A CN 2011103099922A CN 201110309992 A CN201110309992 A CN 201110309992A CN 102507343 A CN102507343 A CN 102507343A
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China
Prior art keywords
test
temperature control
anchor clamps
marmem
test specimen
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CN2011103099922A
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CN102507343B (en
Inventor
彭向和
孙虎
陈斌
陈翔
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Chongqing University
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Chongqing University
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Priority to CN201110309992.2A priority Critical patent/CN102507343B/en
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Publication of CN102507343B publication Critical patent/CN102507343B/en
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Abstract

The invention discloses a test piece for a shape memory alloy pulling and twisting experiment, a fixture and a device for the test piece. The test piece is in a cylindrical shape as a whole and comprises a test part arranged in the middle and connecting parts arranged at two ends of the test part, wherein the diameter of each connecting part is greater than that of the test part; each connecting part is provided with an outer thread; each connecting part is also provided with two inner steps with step faces parallel to the shaft line; and each step face is a plane. The device disclosed by the invention is capable of conveniently and quickly finishing mounting and fixing of the test piece, clamping and connecting the test piece stably and reliably, and well finishing the shape memory alloy pulling and twisting performance test, and is favorable for performance research of the shape memory alloy, and meanwhile, the device disclosed by the invention adopts novel fixture for realizing research on the traditional material test machine, so that the cost is greatly reduced, and the device has the characteristic of convenience in implementing.

Description

A kind of marmem draws turns round experiment test specimen, anchor clamps and device thereof
Technical field
The present invention relates to draw the performance test technology of turning round, especially relate to a kind of test specimen and device thereof of turning round Performance Detection that marmem is drawn.
 
Background technology
Marmem is a kind of alloy with SME, belongs to a kind of and collects perception and be the new function material of one with driving.(the Shape Memory Alloys of marmem under the heating power loading; SMAs) distinctive thermoelastic martensitic transformation is given its unusual characteristic; As SME (Shape Memory Effect, SME) and pseudoelasticity (Pseudoelastisity, PE) etc.These characteristics make marmem obtain widespread use at industry, national defence, instrument and medical field.
In order to be familiar with the characteristic of marmem better, drawing of marmem turned round performance and shape restorability research experiment, significant.
In the prior art, being used to of existence detected various metals and draws the equipment of turning round performance, and majority is to common metal; The test test specimen there is not specific (special) requirements; So for the ease of the installation of test test specimen, the size of its test specimen and anchor clamps all is provided with greatlyyer, the most forms that adopt flange plate structure of anchor clamps.MTS (the material testing SYSTEM material testing system) operating system (product type MTS 858/material testing system 858/MTS 858 universal testing machines) of producing such as American MTS systems Corporation company just belongs to this equipment.But for marmem one is because cost is more expensive; The 2nd, because self performance is special; So need to make the test specimen that becomes reduced size (round tube shape about diameter 5mm is adopted in general test section); Be combined with temperature controlled measure then, could detect it so exactly and draw and turn round performance, and the function recovered down of high temperature.Also exist some can detect the small size test specimen in the prior art and draw the equipment of turning round performance, but all have defective with high costs, and drawing of marmem same and that be not suitable for having specific function turned round performance test.
 
Summary of the invention
Deficiency to above-mentioned prior art; The technical matters that the present invention will solve is: provide a kind of marmem that is exclusively used in to draw the test specimen of turning round performance test; A kind of anchor clamps and device that is applicable to this test specimen is provided simultaneously; Based on said test specimen, anchor clamps and device, can accomplish the installation of test specimen and fixing quickly and easily, can accomplish marmem and draw and turn round performance test.
In order to solve the problems of the technologies described above, adopted following technical scheme among the present invention:
A kind of marmem draws turns round the experiment test specimen; Its characteristics are that test specimen is cylindrical on the whole, comprise that one is positioned at middle test department and the connecting portion that is positioned at the test department two ends; The connecting portion diameter is greater than the test department diameter; Said connecting portion is provided with external thread, also has the interior step that two step surfaces and axis parallel on each connecting portion, and said step surface is the plane.
In this test specimen, connecting portion adopts external thread to connect, can be so that connection is very convenient; The testing requirements of in the time of can satisfying test simultaneously test specimen being drawn, pressing; Step is realized pushing against and can be made and push against firmly in adopting, and does not stay the slit of rotation, the requirement of when satisfying test test specimen being reversed.
The present invention also provides a kind of marmem to draw and has turned round the experiment anchor clamps; Its characteristics are that anchor clamps are cylindrical on the whole, and the one of which end has the ring flange of a coaxial setting; The other end has the endoporus of a coaxial setting; Have in the endoporus with above-mentioned test specimen on the internal thread of external thread coupling, the both sides of endoporus also have two puller bolts that are oppositely arranged, puller bolt lean on screw thread to be screwed on the anchor clamps rotationally and an end inwards for the plane that holds out against of puller bolt axis normal.
These anchor clamps and above-mentioned test specimen cooperate; Lean on threaded engagement that the connecting portion of test specimen is screwed in the anchor clamps endoporus during assembling; Two of anchor clamps puller bolts screw in and push against on the step surface of test specimen connecting portion then; The step surface that holds out against plane and test specimen of puller bolt end can prevent well that test specimen from rotating again after fitting and pushing against, so can satisfy the installation of test specimen well and fix; The ring flange that is provided with simultaneously can be easily quickly with clamps on existing Material Testing Machine cheaply, to realize that drawing of marmem turned round performance detection.
The present invention also provides a kind of marmem to draw twisting experimental device, comprises a Material Testing Machine, and said Material Testing Machine has a worktable; The worktable below has following mounting flange; The worktable top has last mounting flange, and said Material Testing Machine also has to draw turns round performance detecting system, and its characteristics are; Also comprise temperature control equipment and two above-mentioned anchor clamps; Said temperature control equipment comprises guide rail and temperature control box, and an end of guide rail extends to the worktable top, and temperature control box leans on roller to be assemblied on the guide rail slidably; Temperature control box up and down two ends respectively offers a relative through hole, and the ring flange that said two anchor clamps can each lower through-hole on temperature control box pass and leaned on self is connected to a fixed with the following mounting flange and the last mounting flange of Material Testing Machine respectively.
In this device, adopt existing have to draw turn round Performance Detection materials with function testing machine and be the theme, this testing machine is for adopting the equipment of ring flange as jockey, its low price is with low cost.And then set up a temperature control box; Through guide rail temperature control box and Material Testing Machine are combined; In the time of need doing the marmem test, temperature control box is pushed into the worktable top, can satisfies the temperature controlled requirement of test specimen; After test finishes the temperature control box passing is opened, still can be as the usefulness of turning round performance test of drawing of plain metal large scale test specimen.When this device is used for the marmem test; As for the worktable top, the through hole employing of again two anchor clamps being passed on the temperature control box is bolted on the ring flange of Material Testing Machine, and then test specimen is assembled on the anchor clamps in the temperature control box with temperature control box in elder generation; Accomplish and install; Lean on drawing that Material Testing Machine self has to turn round performance detecting system then,, can accomplish marmem drawn and turn round performance detection according to the trace routine of setting.In the testing process,, can satisfy testing requirements to the marmem temperature variation through temperature control to temperature control box.Wherein, said Material Testing Machine and temperature control box are ripe prior art and product separately, so not at this detailed description.
In sum, the present invention can accomplish the installation of test specimen and fixing quickly and easily, and it is reliable and stable to be clamped and connected, and can accomplish marmem well and draw and turn round performance test.The performance study that helps marmem, apparatus of the present invention adopt new anchor clamps on existing Material Testing Machine, to realize research simultaneously, so greatly reduce cost, have and implement cheap advantage.The present invention simultaneously can also be applied to other drawing of small size test specimen and turn round performance study.
 
Description of drawings
Fig. 1 is a test specimen structural representation of the present invention.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is the structural representation of test specimen, anchor clamps and temperature control box among the present invention.
 
Embodiment
Below in conjunction with accompanying drawing and embodiment structure of the present invention is done further to specify.
During practical implementation, as depicted in figs. 1 and 2, a kind of marmem draws turns round the experiment test specimen; Test specimen cylindrical on the whole (can for solid or hollow); Comprise that one is positioned at middle test department 1 and the connecting portion 2 that is positioned at test department 1 two ends, connecting portion 2 diameters are greater than the test department diameter, and said connecting portion 2 is provided with external thread; Also have the interior step 3 that two step surfaces and axis parallel on each connecting portion 2, said step surface is the plane.
During practical implementation, the diameter of said test department generally adopts about 4-7mm, wherein can adopt higher size during the hollow tubular test specimen, adopts size on the low side when solid; During enforcement, screw thread adopts the screw thread of M14 * 1-6g (hollow tubular) or the screw thread of M10 * 1-6g (solid tubes) to get final product.The size of anchor clamps screw thread can be adjusted according to the performance requirement of test specimen during enforcement, and screw thread can bear big or small the getting final product of power of equipment tension and compression when only needing to satisfy test.
The present invention also provides a kind of marmem to draw and has turned round the experiment anchor clamps; As shown in Figure 3, anchor clamps are cylindrical on the whole, and the one of which end has the ring flange 4 of a coaxial setting; The other end has the endoporus 5 of a coaxial setting; Have in the endoporus 5 with above-mentioned test specimen on the internal thread of external thread coupling, the both sides of endoporus also have two puller bolts 6 that are oppositely arranged, puller bolt 6 lean on screw thread to be screwed on the anchor clamps rotationally and an end inwards for the plane that holds out against of puller bolt axis normal.Label 7 is aforesaid test specimen among Fig. 3, and label 8 is temperature control box (promptly adopting the electric cabinet device of existing band temperature control function).
The present invention also provides a kind of marmem to draw twisting experimental device; Comprise a Material Testing Machine (promptly adopting the universal testing machine of the described product type MTS of background technology 858/material testing system 858/MTS 858 in this embodiment); This Material Testing Machine has a worktable, and the worktable below has following mounting flange, and the worktable top has last mounting flange; Said Material Testing Machine also has to draw turns round performance detecting system; Also comprise temperature control equipment and two above-mentioned anchor clamps, said temperature control equipment comprise guide rail and temperature control box (temperature control box as shown in Figure 38, be the electric cabinet device of band temperature control function; Belong to prior art; So do not detail), an end of guide rail extends to the worktable top, and temperature control box leans on roller to be assemblied on the guide rail slidably; Temperature control box up and down two ends respectively offers a relative through hole, and the ring flange that said two anchor clamps can each lower through-hole on temperature control box pass and leaned on self is connected to a fixed with the following mounting flange and the last mounting flange of Material Testing Machine respectively.
When this device is used for the marmem test; As for the worktable top, the through hole employing of again two anchor clamps being passed on the temperature control box is bolted on the ring flange of Material Testing Machine, and then test specimen is assembled on the anchor clamps in the temperature control box with temperature control box in elder generation; Accomplish and install; Lean on drawing that Material Testing Machine self has to turn round performance detecting system then,, can accomplish marmem drawn and turn round performance detection according to the trace routine of setting.In the testing process,, can satisfy testing requirements to the marmem temperature variation through temperature control to temperature control box.
 
Device of the present invention not only is applicable to the performance test of marmem, and the drawing of small size test specimen that also can also be applied to other turned round performance study.

Claims (3)

1. a marmem draws and turns round the experiment test specimen; It is characterized in that test specimen is cylindrical on the whole, comprise that one is positioned at middle test department and the connecting portion that is positioned at the test department two ends; The connecting portion diameter is greater than the test department diameter; Said connecting portion is provided with external thread, also has the interior step that two step surfaces and axis parallel on each connecting portion, and said step surface is the plane.
2. a marmem draws and turns round the experiment anchor clamps; It is characterized in that anchor clamps are cylindrical on the whole, the one of which end has the ring flange of a coaxial setting; The other end has the endoporus of a coaxial setting; Have in the endoporus with the described test specimen of claim 1 on the internal thread of external thread coupling, the both sides of endoporus also have two puller bolts that are oppositely arranged, puller bolt lean on screw thread to be screwed on the anchor clamps rotationally and an end inwards for the plane that holds out against of puller bolt axis normal.
3. a marmem draws twisting experimental device, comprises a Material Testing Machine, and said Material Testing Machine has a worktable; The worktable below has following mounting flange; The worktable top has last mounting flange, and said Material Testing Machine also has to draw turns round performance detecting system, it is characterized in that; Also comprise temperature control equipment and two anchor clamps as claimed in claim 2; Said temperature control equipment comprises guide rail and temperature control box, and an end of guide rail extends to the worktable top, and temperature control box leans on roller to be assemblied on the guide rail slidably; Temperature control box up and down two ends respectively offers a relative through hole, and the ring flange that said two anchor clamps can each lower through-hole on temperature control box pass and leaned on self is connected to a fixed with the following mounting flange and the last mounting flange of Material Testing Machine respectively.
CN201110309992.2A 2011-10-13 2011-10-13 Test piece for shape memory alloy pulling and twisting experiment, fixture and device therefor Expired - Fee Related CN102507343B (en)

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CN103175741A (en) * 2013-03-18 2013-06-26 中国建筑股份有限公司 Device and testing method for reinforcing steel bar tensile test in supper-low temperature environment
WO2015172541A1 (en) * 2014-05-15 2015-11-19 深圳大学 Shape memory performance tester
CN105223225A (en) * 2015-10-08 2016-01-06 同济大学 A kind of test macromolecular material shape-memory properties device, method of testing and application thereof
CN105372125A (en) * 2015-12-23 2016-03-02 济南科汇试验设备有限公司 Fixture tooling for torsion testing machine and using method of fixture tooling
CN107024383A (en) * 2017-04-10 2017-08-08 青岛科技大学 A kind of thermoplastic sulfurized rubber compression stress relaxation can reverse recovery behavior characterizing method
CN109387414A (en) * 2018-12-19 2019-02-26 东北大学 A kind of device and method preparing the artificial sample of sizes hydraulic fracturing experiments

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CN103175741A (en) * 2013-03-18 2013-06-26 中国建筑股份有限公司 Device and testing method for reinforcing steel bar tensile test in supper-low temperature environment
CN103175741B (en) * 2013-03-18 2016-05-25 中国建筑股份有限公司 Device and the test method of steel bar stretching test under a kind of ultra-low temperature surroundings
WO2015172541A1 (en) * 2014-05-15 2015-11-19 深圳大学 Shape memory performance tester
CN105223225A (en) * 2015-10-08 2016-01-06 同济大学 A kind of test macromolecular material shape-memory properties device, method of testing and application thereof
CN105372125A (en) * 2015-12-23 2016-03-02 济南科汇试验设备有限公司 Fixture tooling for torsion testing machine and using method of fixture tooling
CN107024383A (en) * 2017-04-10 2017-08-08 青岛科技大学 A kind of thermoplastic sulfurized rubber compression stress relaxation can reverse recovery behavior characterizing method
CN107024383B (en) * 2017-04-10 2019-03-12 青岛科技大学 A kind of thermoplastic sulfurized rubber compression stress relaxation can reverse recovery behavior characterizing method
CN109387414A (en) * 2018-12-19 2019-02-26 东北大学 A kind of device and method preparing the artificial sample of sizes hydraulic fracturing experiments
CN109387414B (en) * 2018-12-19 2020-03-24 东北大学 Device and method capable of preparing artificial samples of hydraulic fracturing experiments of various sizes

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