CN104089828A - Multifunctional microcomponent extensograph - Google Patents
Multifunctional microcomponent extensograph Download PDFInfo
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- CN104089828A CN104089828A CN201410284457.XA CN201410284457A CN104089828A CN 104089828 A CN104089828 A CN 104089828A CN 201410284457 A CN201410284457 A CN 201410284457A CN 104089828 A CN104089828 A CN 104089828A
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Abstract
The invention relates to a multifunctional microcomponent extensograph. A direct-current stepping motor is connected to two screw rods through a reduction box; the two screw rods are connected to a mobile objective table through a fixing frame; a fixed objective table is connected to a pressure sensor; the screw rods are connected to a speed sensor; the mobile objective table is connected to a displacement sensor; the fixed objective table is connected to the pressure sensor; electrical heaters are arranged in the two objective tables; temperature sensors are connected to a microcomponent specimen; a water cooling pipe is arranged in the mobile objective table and the fixed objective table; gas inlet and outlet pipes, gas opening control valves, a vacuum sensor and an air flow sensor are installed in a hollow shell type fixing frame in a shape of square concentric with an inner circle; CCD is connected to a computer in a central control system through a data acquisition card; and the computer receives measurement data signals of the sensors respectively, outputs control signals to execute uniaxial tensile tests in different conditions, and draws out changing curves and diagrams of pressure, strain rate, strain extent, temperature and environmental atmosphere when a material is subjected to uniaxial tension or compression.
Description
Technical field
The present invention relates to a kind of member tensilometer, especially one is applied to metal material, membraneous material, hydrogen storage material, carbon fibre composite in different temperatures, vacuum or given atmosphere complete and stretch or compression deformation, realize many groups test data record of stress, strain rate, degree of strain, temperature, ambiance and microstructure and multi-functional micro-member tensilometer of corresponding curve.
Background technology
In recent years, along with the reinforcement of scientific and technical development and people's environmental consciousness, improve constantly for material performance requirement, various new materials are constantly developed, and comprise silica-base material, compound substance, pottery, metal and alloy thereof etc.As automobile steel material trends towards lightweight, energy-conservation and low cost future development, various high strength steels are constantly developed, wherein TRIP steel is acknowledged as young mobile high-strength steel sheet, these steel have the feature of Deformation Induced phase transformation, and, in deformation process, Transformation of Retained Austenite becomes high-intensity high carbon martensite, simultaneous volumetric expansion, suppress the unstable of plastic yield, increase the scope of evenly extending, the intensity of material and plasticity are improved simultaneously.Therefore, scientific research personnel is in research and development when new material, in observing material microstructure, more wishes that analysis of material carries the situation of change of microstructure while deforming under effect outside.And at present senior metaloscope only can Continuous Observation metal or alloy heat up and the process of cooling in structural transformation, the high temperature optical microscope of producing as German LEICA company, carry out within the scope of Continuous Observation room temperature to 1500 DEG C crystal-phase transformation situation in heating or cooling procedure by configuring hot platform, but still can not realize material is loaded to stretcher strain, in research deformation process, Transformation of Retained Austenite becomes phase transition process and the quantity situation of high carbon martensite.In addition, the ess-strain situation of material when thermoforming steel plate not only needs to understand load deflection, and need to analyze the impact of cooling velocity on material phase transformation.At present owing to not having special optical microscope can load sample and analyzing the feature of its phase transformation, therefore above-mentioned research at present all adopts first in universal material experimental machine, or on gleebe equipment, carry out load deflection, by carrying out metallographic structure analysis at optical microscope again after shrend.Obvious this research method can only be by estimation and indirect analysis, not only consuming time nor science.Therefore, be necessary multi-functional micro-member tensilometer of reflection loading force, strain, temperature and the tissue variation carried out.
Summary of the invention
The present invention will provide a kind of multi-functional micro-member tensilometer, this tensilometer can be under normal temperature, high temperature, vacuum or certain atmospheric condition, not only can realize unilateral stretching or the compression deformation test experiments of the speed change loading of carrying out micro-member sample under different temperatures, different atmosphere, complete six groups of factor data records such as Fine Texture of Material pattern of stress, strain rate, degree of strain, temperature, ambiance and micro-member tensile sample and gather, providing corresponding curve and figure.
For achieving the above object, the technical scheme that the present invention takes is as follows:
A kind of multi-functional micro-member tensilometer, comprise central control system, heating system, cooling system, tensioning system, vacuum and atmosphere system, image capturing system, optical microscope, be characterized in: tensioning system is by DC stepper motor, reducer casing, two identical screw mandrels of rotation direction, fixed frame, moving objective table, determine objective table, displacement transducer, pressure transducer and speed pickup form, DC stepper motor connects two screw mandrels that rotation direction is identical by reducer casing, two rhizoid bars connect moving objective table through fixed frame, determining objective table one side is connected with pressure transducer through fixed frame, and screw mandrel is connected with speed pickup, moving objective table is connected with displacement transducer, determining objective table is connected with pressure transducer, heating system is made up of electric heater, temperature sensor and automatic heating temperature-controlling system, and electric heater is arranged on moving objective table and determines in objective table, and temperature sensor is connected with micro-member sample, cooling system is made up of water cooling pipeline, temperature sensor and cooling water recirculation system, and water cooling pipeline is arranged in moving objective table and determines in objective table, vacuum and atmosphere system are made up of input and output gas pipeline, gas port operation valve, vacuum induction device, atmosphere flow sensor, gas control system and vacuum system, and input and output gas pipeline, gas port operation valve, vacuum induction device and atmosphere flow sensor are arranged in the fixed frame of square-outside and round-inside hollow hull shape part, image capturing system is made up of CCD, data collecting card, CCD in optical microscope is connected with the computer in central control system by data collecting card, by CCD gather be constantly placed in interior moving, determine micro-member sample microstructure morphology or modification of surface morphology image on objective table, and by data collecting card, picture signal is transmitted to computer, the computer of central control system is received bit displacement sensor respectively, pressure transducer, speed pickup, temperature sensor, atmosphere flow sensor, the measurement data signals that vacuum induction device sends, after contrast setting value, export control signal to heating system, cooling system, tensioning system and vacuum and atmosphere system, realize in different temperatures, different atmosphere, the unilateral stretching test of friction speed, and feedback signal is measured in reception, stress while drawing out material unilateral stretching or compression, strain rate, degree of strain, temperature, ambiance change curve, provide micro-member sample structure and morphology and change figure.
Be that length≤30mm, width are≤2mm for micro-member specimen size of micro-member unilateral stretching, the dog bone shape sample of thickness≤0.5mm, is 1mm diameter for micro-member sample of compression verification, and length is 3mm pole sample.
Move, determine to be respectively fixedly connected with the electric current for insulated electro well heater by fixed screw above objective table, prevent that whole instrument conduction from injuring first and second ceramic gasket of user.
The circle cavity of fixed frame and determine to be tightly connected between objective table, moving objective table, vacuum induction device and atmosphere flow sensor.
The invention has the beneficial effects as follows:
The present invention can be to metal material, membraneous material, hydrogen storage material, carbon fibre composite in different temperatures, carries out test and the observation of stress, strain rate, degree of strain, temperature, ambiance and microstructure under vacuum or the stretching of given atmosphere or compressive state.The present invention drives two screw mandrels that rotation direction is identical by DC stepper motor through reducer casing, and screw mandrel, through fixed frame, directly connects moving objective table, and moving objective table connection bit displacement sensor is determined objective table one side and is connected with pressure transducer through fixed frame.Screw mandrel is connected with speed pickup.Move objective table and determine objective table by ceramic gasket, set bolt, electric heater, cooling water pipeline and temperature sensor composition, be connected with automatic heating temperature-controlling system and cooling water recirculation system, fixed frame is shaped as a square-outside and round-inside hollow hull shape part, built-in input and output gas pipeline and gas port operation valve, vacuum induction device and atmosphere flow sensor, air inlet/outlet is connected with extract system and atmosphere control system, and the interior circle cavity top layer of fixed frame is sealed with quartz glass plate.All the sensors is connected with central computer, send instruction by central computer, control motor rotational speed, heating-up temperature and cooling velocity, vacuum tightness and the atmosphere of micro-member tensilometer, be connected with optical microscope by image data collection system simultaneously, record and show and be placed in moving microstructure morphology or the modification of surface morphology of determining micro-member sample on objective table in micro-member tensilometer.
Brief description of the drawings
Fig. 1 is structure vertical view of the present invention;
Fig. 2 is objective table schematic perspective view of the present invention;
Fig. 3 is combination side view of the present invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the invention will be further described.
As shown in Figure 1 to Figure 3, a kind of multi-functional micro-member tensilometer, by central control system, heating system, cooling system, tensioning system and vacuum and atmosphere system, sealing system, image capturing system and optical microscope seven parts form.It comprises DC stepper motor 1, reducer casing 2, fixed frame 3, screw mandrel 4, displacement transducer 5, moving objective table 6, micro-member sample 7, determine objective table 8, vacuum induction device 9, atmosphere flow sensor 10, pressure transducer 11, temperature sensor 12, quartz glass 13, input and output gas pipe 14, fixed screw 15, first, two ceramic gaskets 16, 18, electric heater 17, water cooling pipeline 19, speed pickup 20, gas port operation valve 21, CCD22, optical microscope 23, data acquisition module 24, computer 25.
Tensioning system, by DC stepper motor 1, reducer casing 2, two identical screw mandrels 4 of rotation direction, fixed frame 3, moving objective table 6, is determined objective table 8, displacement transducer 5, pressure transducer 11 and speed pickup 20 and is formed.Motor is DC stepper motor, and rotating speed is by computer control.Micro-member sample 7 is placed in moving solid objective table 6 and determines between objective table 8.Drive two screw mandrels 4 that rotation direction is identical by DC stepper motor 1 through reducer casing 2, screw mandrel 4, through fixed frame 3, directly connects moving objective table 6, determines objective table 8 one sides and is connected with pressure transducer 11 through fixed frame 3.Screw mandrel 4 in tensioning system is connected with speed pickup 20, Gu objective table 6 is connected with displacement transducer 5, determines objective table 8 and is connected with pressure transducer 11.DC stepper motor 11 rotarily drives screw mandrel 4, and moving objective table 6 moves thus, drives micro-member sample 7 stretch or compress.The micro-member sample 7 that is used for micro-member unilateral stretching is of a size of length≤30mm, width is≤2mm, and the dog bone shape sample of thickness≤0.5mm, is 1mm diameter for micro-member sample 7 of compression verification, and length is 3mm pole sample.
Heating system is made up of electric heater 17, temperature sensor 22 and automatic heating temperature-controlling system, and electric heater 17 is arranged in moving objective table 6 and determines in objective table 8, and temperature sensor 22 is connected with micro-member sample 7.
Cooling system is made up of water cooling pipeline 19, temperature sensor 22 and cooling water recirculation system, and water cooling pipeline 19, temperature sensor 22 are arranged in moving objective table 6 and determine in objective table 8.
Heating system and cooling system acting in conjunction, i.e. firing rate and the temperature retention time of the micro-member sample of electric heater control, by the cooling velocity of micro-member sample after water velocity control heating.
Vacuum and atmosphere system are made up of input and output gas pipeline 14, gas port operation valve 21, vacuum induction device 9, atmosphere flow sensor 10, gas control system and vacuum system, and wherein input and output gas pipeline 14, gas port operation valve 21, vacuum induction device 9 and atmosphere flow sensor 10 are arranged in the fixed frame 3 of square-outside and round-inside hollow hull shape part.Measure the interior circle cavity vacuum of fixed frame 3 degrees of data by vacuum induction device 9, the interior circle cavity vacuum degree of gas port operation valve 21 and vacuum system control fixed frame 3.In like manner, measure atmosphere data on flows in fixed frame 3 circle cavitys by atmosphere flow inductor 10, atmosphere pressures in gas port operation valve 21 and gas control system control fixed frame 3 circles.
Image capturing system is made up of CCD22, data acquisition module 24 and image processing software, and image capturing system is connected optical microscope 23 with central control system.
The micro-member tensilometer of camera lens underlying of optical microscope 23, is gathered constantly and is placed in moving micro-member sample 7 microstructure morphologies or the modification of surface morphology of determining objective table 6 in micro-member tensilometer by CCD22, and transmit central control system by data collecting card.
Central control system is by computer 25, all inductor (temperature, pressure, displacement, speed, vacuum and atmosphere) and image acquisition and point amount control system (heating control system, cooling control system, gas control system and vacuum system) and data processing and image processing software formation, send measurement data by inductor to computer, computer contrast setting value, give point various instructions of amount control system, realize in different temperatures, different atmosphere, the unilateral stretching test of friction speed, and feed back to central control system, central control system receives various measurement data, stress while providing material unilateral stretching or compression by data processing software again, strain rate, degree of strain, temperature, ambiance change curve, providing micro-member sample structure and morphology by image processing software changes.
Sealing system has the sealing quartz glass plate on each joint sealing member and fixed frame circle cavity top layer to form, to ensure that micro-member tensilometer vacuum tightness requires and atmosphere pressures.
Move, determine objective table 6,8 and be respectively fixedly connected with the electric current for insulated electro well heater by fixed screw 15 above, prevent that whole instrument conduction from injuring first and second ceramic gasket 16,18 of user.The circle cavity of fixed frame 3 and determine to be tightly connected between objective table 8, moving objective table 6, vacuum induction device 9 and atmosphere flow sensor 10.
When whole instrument work, the micro-member sample 7 that will test is arranged on moving objective table 6 and determines between objective table 8, fixing by bolt 15, then seals the use quartz glass 13 on fixed frame circle cavity top layer.Micro-member tensilometer is arranged on to optical microscope 23 times, connects heating control system, cooling control system, gas control system and vacuum system and sensor.On computer 25, set the parameters such as the required heating-up temperature of user, cooling velocity, stretching or compression-loaded power, loading velocity.Computer 25 is controlled DC stepper motor 1 rotating speed, drives two screw mandrels 4 that rotation direction is identical by DC stepper motor 1 and reducer casing 2, drives thus moving objective table 6 to move, and owing to determining, objective table 8 is motionless, makes test sample 7 just be one-way stretched or compress.When moving objective table 6 moves, computer 25 changes the translational speed of moving objective table 6 by controlling DC stepper motor 1 rotating speed height, carry out unilateral stretching or the compression deformation of differently strained speed, it controls the loading velocity correlative value of motor 1 rotating speed Negotiation speed sensor 20 measured values and user's input, by calculating, control DC stepper motor 1 rotating speed height by computer 25.Computer 25 is by being arranged on moving objective table 6 and determining the interior electric heater 17 of objective table 8 test sample 7 is heated, firing rate depends on the measured value of temperature sensor 12 and the firing rate contrast differences of user's input, is controlled the size of current that determines electric heater 17 by computer 25.The vacuum tightness of fixed frame 3 circle cavitys or atmosphere, by vacuum induction device 9 and atmosphere flow sensor 10 measured value contrast user input values, judge and control whether need further to vacuumize or add atmosphere flow by computer 25.
Claims (4)
1. a multi-functional micro-member tensilometer, comprises central control system, heating system, cooling system, tensioning system, vacuum and atmosphere system, image capturing system, optical microscope, is characterized in that: described tensioning system is by DC stepper motor (1), reducer casing (2), two identical screw mandrels of rotation direction (4), fixed frame (3), moving objective table (6), determines objective table (8), displacement transducer (5), pressure transducer (11) and speed pickup (20) form, DC stepper motor (1) connects two screw mandrels (4) that rotation direction is identical by reducer casing (2), two rhizoid bars (4) connect moving objective table (6) through fixed frame (3), determining objective table (8) one sides is connected with pressure transducer (10) through fixed frame (3), and screw mandrel (4) is connected with speed pickup (20), moving objective table (6) is connected with displacement transducer (5), determines objective table (8) and is connected with pressure transducer (11), described heating system is made up of electric heater (17), temperature sensor (22) and automatic heating temperature-controlling system, electric heater (17) is arranged on moving objective table (6) and determines in objective table (8), and temperature sensor (12) is connected with micro-member sample (7), described cooling system is made up of water cooling pipeline (19), temperature sensor (22) and cooling water recirculation system, and water cooling pipeline (19) is arranged in moving objective table (6) and determines in objective table (8), described vacuum and atmosphere system are made up of input and output gas pipeline (14), gas port operation valve (21), vacuum induction device (9), atmosphere flow sensor (10), and input and output gas pipeline (14), gas port operation valve (21), vacuum induction device (9) and atmosphere flow sensor (10) are arranged in the fixed frame (3) of square-outside and round-inside hollow hull shape part, described image capturing system is made up of CCD (22), data collecting card (24), CCD (22) in optical microscope (23) is connected with the computer (25) in central control system by data collecting card (24), by CCD (22) gather be constantly placed in moving, determine micro-member sample (7) microstructure morphology or modification of surface morphology image on objective table (6,8), and by data collecting card (24), picture signal is transmitted to computer (25), the computer (25) of central control system is received bit displacement sensor (5) respectively, pressure transducer (11), speed pickup (20), temperature sensor (12), atmosphere flow sensor (10), the measurement data signals that vacuum induction device (9) sends, after contrast setting value, export control signal to heating system, cooling system, tensioning system and vacuum and atmosphere system, realize in different temperatures, different atmosphere, the unilateral stretching test of friction speed, and feedback signal is measured in reception, stress while drawing out material unilateral stretching or compression, strain rate, degree of strain, temperature, ambiance change curve, provide micro-member sample structure and morphology and change figure.
2. multi-functional micro-member tensilometer according to claim 1, it is characterized in that: be of a size of length≤30mm, width for≤2mm for micro-member sample (7) of micro-member unilateral stretching, the dog bone shape sample of thickness≤0.5mm, micro-member sample (7) for compression verification is 1mm diameter, and length is 3mm pole sample.
3. multi-functional micro-member tensilometer according to claim 1, it is characterized in that: described moving, determine objective table (6,8) and be respectively fixedly connected with the electric current for insulated electro well heater by fixed screw (15) above, prevent from that whole instrument from conducting electricity to injure first and second ceramic gasket (16,18) of user.
4. multi-functional micro-member tensilometer according to claim 1, is characterized in that: the circle cavity of described fixed frame (3) and determine to be tightly connected between objective table (8), moving objective table (6), vacuum induction device (9) and atmosphere flow sensor (10).
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| CN201410284457.XA CN104089828A (en) | 2014-06-24 | 2014-06-24 | Multifunctional microcomponent extensograph |
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Cited By (9)
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| CN105372146A (en) * | 2015-12-22 | 2016-03-02 | 上海锅炉厂有限公司 | Testing device and method for high temperature oxidation properties of material under stress action |
| CN105823672A (en) * | 2016-05-24 | 2016-08-03 | 中国科学院理化技术研究所 | Metallographical low-temperature observation device |
| CN106840852A (en) * | 2017-03-10 | 2017-06-13 | 西安交通大学 | A kind of many atmosphere in situ environment stress ga(u)ges of modularization wide temperature range |
| CN108254251A (en) * | 2018-01-10 | 2018-07-06 | 北京航空航天大学 | A kind of controllable carbon fiber symmetric curvature high-cycle fatigue test device of atmosphere |
| CN109187221A (en) * | 2018-09-30 | 2019-01-11 | 华南理工大学 | The test device and method of a kind of pair of high molecular material shape memory effect quantitative measurment |
| CN110220801A (en) * | 2019-06-17 | 2019-09-10 | 东南大学 | Polymer material Mechanics Performance Testing device under a kind of minute yardstick |
| CN111610097A (en) * | 2020-06-11 | 2020-09-01 | 四川大学 | Polymer material four-way or two-way tensile test equipment |
| CN113190065A (en) * | 2021-01-22 | 2021-07-30 | 大连理工大学 | Device and method for precisely controlling deformation parameters of metal construction |
| CN113252092A (en) * | 2020-02-13 | 2021-08-13 | 中国科学院理化技术研究所 | Strain temperature control experiment testing device and testing method thereof |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105372146A (en) * | 2015-12-22 | 2016-03-02 | 上海锅炉厂有限公司 | Testing device and method for high temperature oxidation properties of material under stress action |
| CN105823672A (en) * | 2016-05-24 | 2016-08-03 | 中国科学院理化技术研究所 | Metallographical low-temperature observation device |
| CN106840852A (en) * | 2017-03-10 | 2017-06-13 | 西安交通大学 | A kind of many atmosphere in situ environment stress ga(u)ges of modularization wide temperature range |
| CN106840852B (en) * | 2017-03-10 | 2019-04-09 | 西安交通大学 | A kind of more atmosphere in situ environment stress gauges of modularization wide temperature range |
| CN108254251B (en) * | 2018-01-10 | 2021-03-26 | 北京航空航天大学 | Atmosphere-controllable carbon fiber symmetric bending high-cycle fatigue test device |
| CN108254251A (en) * | 2018-01-10 | 2018-07-06 | 北京航空航天大学 | A kind of controllable carbon fiber symmetric curvature high-cycle fatigue test device of atmosphere |
| CN109187221A (en) * | 2018-09-30 | 2019-01-11 | 华南理工大学 | The test device and method of a kind of pair of high molecular material shape memory effect quantitative measurment |
| CN110220801A (en) * | 2019-06-17 | 2019-09-10 | 东南大学 | Polymer material Mechanics Performance Testing device under a kind of minute yardstick |
| CN113252092A (en) * | 2020-02-13 | 2021-08-13 | 中国科学院理化技术研究所 | Strain temperature control experiment testing device and testing method thereof |
| CN113252092B (en) * | 2020-02-13 | 2022-11-01 | 中国科学院理化技术研究所 | Strain temperature control experiment testing device and testing method thereof |
| CN111610097A (en) * | 2020-06-11 | 2020-09-01 | 四川大学 | Polymer material four-way or two-way tensile test equipment |
| CN111610097B (en) * | 2020-06-11 | 2022-02-08 | 四川大学 | Polymer material four-way or two-way tensile test equipment |
| CN113190065A (en) * | 2021-01-22 | 2021-07-30 | 大连理工大学 | Device and method for precisely controlling deformation parameters of metal construction |
| CN113190065B (en) * | 2021-01-22 | 2022-02-11 | 大连理工大学 | Device and method for precisely controlling deformation parameters of metal construction |
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Application publication date: 20141008 |