CN204188470U - The in-situ test instrument of material Micro Mechanical Properties under 3 points, four-point bending effect - Google Patents
The in-situ test instrument of material Micro Mechanical Properties under 3 points, four-point bending effect Download PDFInfo
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- CN204188470U CN204188470U CN201420667565.0U CN201420667565U CN204188470U CN 204188470 U CN204188470 U CN 204188470U CN 201420667565 U CN201420667565 U CN 201420667565U CN 204188470 U CN204188470 U CN 204188470U
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Abstract
The utility model relates to the in-situ test instrument of material Micro Mechanical Properties under a kind of 3 points, four-point bending effect, belongs to material Micro Mechanical Properties technical field of measurement and test.Belong to the material Micro Mechanical Properties fine measuring instrument of collection electromechanical integration.DC servo motor is connected with turbine, worm screw, realize deceleration increasing by two-stage turbine worm gearing and turn round rear drive guide screw movement, accurate slide block is driven in conjunction with leading screw after the support of pedestal, realize elbow to move, in conjunction with the support unit acting in conjunction of test specimen sample, thus realize three-point bending, four-point bending experiment.Advantage is: volume is little, compact conformation, lightweight, dynamic perfromance good, energy consumption is low.Sensor is directly installed on instrument base, fully ensure that measuring accuracy; Both sides elbow span can regulate simultaneously, three-point bending pressure head and four-point bending pressure head convenient disassembly, exchanges succinct, adopts vertical topology layout, is conducive to ensureing that the carrier structure that instrument and commercialization material property characterization device are equipped is compatible.
Description
Technical field
The utility model relates to material Micro Mechanical Properties technical field of measurement and test, particularly material Micro Mechanical Properties in-situ testing technique field, the in-situ test instrument of material Micro Mechanical Properties under espespecially a kind of 3 points, four-point bending effect.It is with while carrying out three-point bending or four-point bending loading to sample, by the microscopic imaging instruments such as Electronic Speculum (as scanning electron microscope SEM, raman spectrometer, X-ray diffractometer, metaloscope and the optical microscope etc.) microdeformation to sample in loading procedure, damage and fracture process carry out in-situ monitoring, belong to high-end manufacturing equipment and Material Testing Machine technical field.
Background technology
Any mechanical component or instrument, in use, often to be subject to the effect of various forms external force, as the cable wire on crane, be subject to the effect of hanger pulling force, the connecting rod on diesel engine, when transmitting power, the not only effect of under tension, but also be subject to the effect of impulsive force, axial workpiece will be subject to the effect etc. of moment of flexure, torsion.This just requires that metal material must have one and bears mechanical load and be no more than license distortion or non-destructive ability, this ability is exactly the mechanical property of material, and want the mechanical property of Knowing material and affect the various factors of material mechanical performance, just the failure mode of necessary bond material, carrys out the mechanical property of Knowing material each side by contrived experiment.Main several metal material mechanics performance tests comprise tension test, compression test, twisting test, bending test, hardness test, impact toughness test, torture test etc.Wherein bending test is then one of most widely used mechanical test method.Traditional three-point bending, four-point bending test generally carry out on universal testing machine, during test, standard sample is placed on the bearing of certain span, then load on standard sample and bend, because three-point bending, four-point bending load and compare the real work situation meeting structural member and functor in actual production, so be used in bending test of being everlasting.This three-point bending, four-point bending proving installation volume are large, belong to " ex situ " three-point bending, four-point bending field tests, namely in the dynamic process of test, can not by means of the micro-imaging assemblies such as scanning electron microscope, Raman spectrometer, laser confocal microscope, super depth-of-field microscope to test specimen under three-point bending, four-point bending loading condition, carry out the dynamic monitoring that original position is real-time.
And in-situ mechanical test refers to carry out Mechanics Performance Testing to material for test under micro-, nanoscale, by observation instruments such as electron microscopes, the microdeformation damage that material under load effect occurs is carried out to a kind of mechanical test technology of omnidistance dynamic monitoring.The Micromechanics behavior of what this technology was deep disclose various types of materials and goods thereof, micromechanism of damage and and correlativity rule between load effect and material property thereof.In the category that many nanometer mechanics are tested, the parameters such as elastic modulus, hardness, break limit are the topmost tested objects in micro structures mechanical property testing, various test is created for these mechanical attributes, as stretching/compressing method, torsional technique, bending method, Using Nanoindentation and eardrum method etc., its situ crooked test can reflect the bending strength characteristic of construction material, and can measure the important mechanics parameters such as elasticity modulus of materials, yield limit and fracture strength the most intuitively.
The micro-nano three-point bending of current original position, the research of four-point bending test still locates the budding stage, be in particular in: be subject to atomic force microscope (AFM), the restriction of the cavity space of scanning electron microscope and transmission electron microscope (TEM) etc., most research concentrates on micro-, in nanometer sized materials and structure, as nanotube, on the simple in-situ nano crooked test of the atomic minor structure such as nano wire and membraneous material, lack the further investigation of the trans-scale in-situ nanometer mechanical test to macro-size, thus seriously hinder Micromechanics behavior and the damage mechanisms new phenomenon of micro-structure material, the discovery of new rule, from means of testing and method, the in-situ nano impression test undertaken by business-like nano-hardness tester and by business-like be originally nanometer stretching instrument carry out original position stretching test, all there is cost of equipment costliness in two kinds of methods, method of testing is single.To compact conformation, compact, precision is high, and the diversified three-point bending of test test specimen, four-point bending in-situ testing device rarely have to be mentioned, greatly constrains going deep into and development of research.
Summary of the invention
The purpose of this utility model is to provide a kind of 3 points, the in-situ test instrument of material Micro Mechanical Properties under four-point bending effect, solve existing machinery equipment at the measuring mechanical property of material with to observe the change of test specimen microscopic pattern be in the process independently, the problem be separated, and existing testing apparatus volume is large, complex structure, the problem such as somewhat expensive and poor compatibility, by different load load modes, the test of material Micro Mechanical Properties is carried out to material test specimen, and then a kind of three-point bending is provided, the in-situ test instrument of material Micro Mechanical Properties under four-point bending effect, can by means of scanning electron microscope, laser confocal microscope, the micro-imaging assembly of the contour multiple of super depth-of-field microscope, obtaining accurately while load-deflection curve, can original position Real-Time Monitoring test specimen in three-point bending, microdeformation under four-point bending operating mode, damage, the germinating of crackle, the Micromechanics such as extensions path.
Above-mentioned purpose of the present utility model is achieved through the following technical solutions:
The in-situ test instrument of material Micro Mechanical Properties under 3 points, four-point bending effect, DC servo motor 1 is arranged on base 12 by motor support base 19, worm screw a2 is fixed in DC servo motor 1, turbine a3 and worm screw b6 is arranged on axle 5 respectively, axle 5 two ends are fixed on support 4, turbine b7 is arranged on leading screw 16, leading screw 16 is connected with glide base 9 by web joint a8, web joint b10 and elbow a, b11,15 are arranged on glide base 9 respectively, glide base 9 both sides are arranged on accurate slide block 18, and accurate slide block 18 is arranged on guide rail 17; DC servo motor 1 by turbine a, b3,7 and worm screw a, b2,6 deceleration increasings turn round rear drive leading screw 16, leading screw 16 drives glide base 9 by web joint a8, slided on guide rail 17 by accurate slide block 18, realize the motion of web joint b10, elbow a11 and elbow b15, complete three-point bending, four-point bending experiment.
Described base 12 is provided with precision force transducer 14, and pressure head 13 is arranged on precision force transducer 14.Precision force transducer 14 is directly installed on base 12, and compared with conventional mounting arrangements, without intermediate transmission part, can not be subject to the impact of leading screw gap and rigidity distortion, measuring accuracy is greatly improved, and fully ensure that measuring accuracy.
Span between described elbow a11 and elbow b15 is adjustable, can test the test specimen of different size.
Under 3 described points, four-point bending effect, the in-situ test instrument overall dimension of material Micro Mechanical Properties is 95mm × 70mm × 120mm.
The utility model adopts vertical layout, compact conformation, and overall dimension is little, adopts the glide base 9 of designed, designed, removes the intermediate links such as a lot of web members from, reduces friction, improves precision.Can be compatible with the article carrying platform of various electron microscope vacuum cavity, and the real-time deformation of three-point bending, four-point bending plane can be observed accurately.Employing two-stage turbine, worm gearing deceleration increasing are turned round, and make testing tool stable movement, transmission efficiency is higher.Three-point bending and four-point bending pressure head are threaded connection and are arranged on above testing tool, therefore convenient disassembly, exchange succinct.Compact overall structure, size are little, can be placed in scanning electron microscope vacuum chamber, on Raman spectrometer objective table, XRD objective table and conventional metaloscope or optical microscope stage, in conjunction with these material property characterization device, dynamic in-situ monitoring is carried out to the evolution of the Micromechanics behavior of material under load effect, damage mechanisms and heterogeneous microstructure.
The beneficial effects of the utility model are: volume is little, compact conformation, reliable in function, easy for installation, the mechanical property tester device of convenient operation, be applicable to super depth-of-field microscope, laser confocal microscope, Raman spectrometer, the original position three-point bending of XRD and the micro-imaging assembly such as conventional metaloscope or optical microscope, four-point bending proving installation, in conjunction with these material property characterization device, to the Micromechanics behavior of material under load effect, dynamic in-situ monitoring is carried out in the evolution of damage mechanisms and heterogeneous microstructure, the comprehensive existing in-situ mechanical test platform of the utility model, have employed simple and feasible replacing head method and solve the problem that common test platform can only carry out three-point bending or four-point bending, have employed pressure head and pass through sensor, it is too much that the method be directly fastened on base solves driving-chain, the coarse problem of measurement result, have employed moveable elbow and vertical structural design and solve the difficult problem that common test platform is difficult to carry out the front of test specimen and side in-situ observation simultaneously, adopt two-stage turbine, worm gearing deceleration increasing is turned round, make integral layout more reasonable, transmission efficiency is improved.
To sum up, the utility model, to the development enriching original position micro nanometer mechanics performance test content and promotion material mechanical performance measuring technology and equipment, has important theory directive significance and good application and development prospect.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide further understanding of the present utility model, forms a application's part, and illustrative example of the present utility model and explanation thereof, for explaining the utility model, are not formed improper restriction of the present utility model.
Fig. 1 is axle side of the present utility model schematic diagram;
Fig. 2 is schematic front view of the present utility model;
Fig. 3 is that motor of the present utility model drives turbine and worm axle to survey view;
Fig. 4 is three-point bending structural representation of the present utility model;
Fig. 5 is four-point bending structural representation of the present utility model.
In figure: 1, DC servo motor; 2, worm screw a; 3, turbine a; 4, support; 5, axle; 6, worm screw b; 7, turbine b; 8, web joint a; 9, glide base; 10, web joint b; 11, elbow a; 12, base; 13, pressure head; 14, precision force transducer; 15, elbow b; 16, leading screw; 17, guide rail; 18, accurate slide block; 19, motor support base.
Embodiment
Detailed content of the present utility model and embodiment thereof is further illustrated below in conjunction with accompanying drawing.
See shown in Fig. 1 to Fig. 3, 3 points of the present utility model, the in-situ test instrument of material Micro Mechanical Properties under four-point bending effect, comprise precision actuation unit, transmission and performance element, signal controls and detecting unit, connect and support unit, concrete structure is: DC servo motor 1 and motor support base 19 are arranged on base 12 by bolt, worm screw a2 is fixed in DC servo motor 1, turbine a3 and worm screw b6 is arranged on axle 5 respectively, axle 5 two ends are fixed on support 4, turbine b7 is arranged on leading screw 16 by screw, leading screw 16 is connected with glide base 9 by screw with web joint a8, web joint b10 and elbow a, b11, 15 are arranged on glide base 9 by screw, glide base 9 both sides are arranged on accurate slide block 18 by screw, accurate slide block 18 is arranged on guide rail 17 by screw.DC servo motor 1 is energized, by turbine a, b3,7 and worm screw a, b2,6 deceleration increasings turn round rear drive leading screw 16, leading screw 16 drives glide base 9 by web joint a8, slidably reciprocated on guide rail 17 by accurate slide block 18, realize the motion of web joint b10, elbow a11 and elbow b15, complete three-point bending, four-point bending experiment.
Shown in Fig. 1 and Fig. 2, precision force transducer 14 is threaded connection and is arranged on base 12, pressure head 13 is threaded connection and is fastened on precision force transducer 14, precision force transducer 14 is directly installed on base 12, compared with conventional mounting arrangements, without intermediate transmission part, the impact of leading screw gap and rigidity distortion can not be subject to, measuring accuracy can be greatly improved, and fully ensure that measuring accuracy.
Shown in Fig. 1 and Fig. 2, the span of elbow a11 and elbow b15 can be adjusted by slip elbow, can test the test specimen of different size.
Shown in Fig. 1 and Fig. 2, under 3 described points, four-point bending effect, the in-situ test instrument of material Micro Mechanical Properties adopts vertical structure, overall dimension little 95mm × 70mm × 120mm, adopt the glide base 9 of designed, designed, remove the intermediate links such as a lot of web members from, reduce friction, improve precision.
Shown in Fig. 1 and Fig. 2, under 3 described points, four-point bending effect, the in-situ test instrument of material Micro Mechanical Properties can be compatible with the article carrying platform of various electron microscope vacuum cavity, and can observe the real-time deformation of three-point bending, four-point bending plane accurately.
See shown in Fig. 1 to Fig. 3, the in-situ test instrument of material Micro Mechanical Properties under 3 described points, four-point bending effect, employing two-stage turbine, worm gearing deceleration increasing are turned round, and make testing tool stable movement, transmission efficiency is higher.
Shown in Fig. 4 and Fig. 5, under 3 described points, four-point bending effect, the three-point bending of the in-situ test instrument of material Micro Mechanical Properties, four-point bending pressure head are threaded connection and are arranged on testing tool, pressure head convenient disassembly, exchange succinct.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All the utility model is done any amendment, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (4)
1. a point, the in-situ test instrument of material Micro Mechanical Properties under four-point bending effect, it is characterized in that: DC servo motor (1) is arranged on base (12) by motor support base (19), worm screw a(2) be fixed in DC servo motor (1), turbine a(3) and worm screw b(6) be arranged on axle (5) respectively, axle (5) two ends are fixed on support (4), turbine b(7) be arranged on leading screw (16), leading screw (16) is by web joint a(8) be connected with glide base (9), web joint b(10) and elbow a, b(11, 15) be arranged on glide base (9) respectively, glide base (9) both sides are arranged on accurate slide block (18), accurate slide block (18) is arranged on guide rail (17).
2. the in-situ test instrument of material Micro Mechanical Properties under 3 points according to claim 1, four-point bending effect, it is characterized in that: described base (12) is provided with precision force transducer (14), and pressure head (13) is arranged on precision force transducer (14).
3. the in-situ test instrument of material Micro Mechanical Properties under 3 points according to claim 1, four-point bending effect, is characterized in that: described elbow a(11) and elbow b(15) between span adjustable.
4. the in-situ test instrument of material Micro Mechanical Properties under 3 points according to claim 1 or 2 or 3, four-point bending effect, is characterized in that: under 3 described points, four-point bending effect, the in-situ test instrument overall dimension of material Micro Mechanical Properties is 95mm × 70mm × 120mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420667565.0U CN204188470U (en) | 2014-11-11 | 2014-11-11 | The in-situ test instrument of material Micro Mechanical Properties under 3 points, four-point bending effect |
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| CN201420667565.0U CN204188470U (en) | 2014-11-11 | 2014-11-11 | The in-situ test instrument of material Micro Mechanical Properties under 3 points, four-point bending effect |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105181480A (en) * | 2015-08-13 | 2015-12-23 | 中国航空工业集团公司西安飞机设计研究所 | Method for multi-point bending measurement of composite material out-of-plane stiffness |
| CN108444809A (en) * | 2018-02-11 | 2018-08-24 | 天津大学 | A kind of films test loading unit |
| CN108444822A (en) * | 2018-02-11 | 2018-08-24 | 天津大学 | A kind of film torsion tensile loads unit |
| CN108562486A (en) * | 2018-05-21 | 2018-09-21 | 攀钢集团攀枝花钢铁研究院有限公司 | Steel rail weld joint material object repeated bend test loads fixture |
-
2014
- 2014-11-11 CN CN201420667565.0U patent/CN204188470U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105181480A (en) * | 2015-08-13 | 2015-12-23 | 中国航空工业集团公司西安飞机设计研究所 | Method for multi-point bending measurement of composite material out-of-plane stiffness |
| CN105181480B (en) * | 2015-08-13 | 2018-08-24 | 中国航空工业集团公司西安飞机设计研究所 | A kind of method that multi-point bending measures composite material Out-of Plane Stiffness |
| CN108444809A (en) * | 2018-02-11 | 2018-08-24 | 天津大学 | A kind of films test loading unit |
| CN108444822A (en) * | 2018-02-11 | 2018-08-24 | 天津大学 | A kind of film torsion tensile loads unit |
| CN108444809B (en) * | 2018-02-11 | 2020-12-18 | 天津大学 | Thin film test loading unit |
| CN108562486A (en) * | 2018-05-21 | 2018-09-21 | 攀钢集团攀枝花钢铁研究院有限公司 | Steel rail weld joint material object repeated bend test loads fixture |
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