CN103076226B - Method for testing tensile mechanical property of metallic foil plate with help of high-frequency vibration - Google Patents
Method for testing tensile mechanical property of metallic foil plate with help of high-frequency vibration Download PDFInfo
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- CN103076226B CN103076226B CN201210584528.9A CN201210584528A CN103076226B CN 103076226 B CN103076226 B CN 103076226B CN 201210584528 A CN201210584528 A CN 201210584528A CN 103076226 B CN103076226 B CN 103076226B
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Abstract
The invention relates to a device and method for testing the tensile mechanical property of a metallic foil plate, particularly relates to a device and method for testing the tensile mechanical property of the metallic foil plate with the help of high-frequency vibration and aims to solve the problem that during tensile mechanical property testing of the metallic foil plate, centering, clamping, strain measurement, fixing and the like of a sample are difficulty. According to the invention, an upper baffle plate, a fixing block, a lower baffle plate and a lower bearing plate are arranged on a fixed platform of a universal tester from the top down in sequence; the lower bearing plate is connected with the fixing block through a plurality of screws; a plurality of guide poles are arranged between the upper baffle plate and the lower baffle plate; a piezoceramic block is connected with a high-frequency power supply; a spring is arranged between the lower surface of the lower baffle plate and the upper surface of the lower bearing plate; a clamp is mounted on a lifting platform of the universal tester; and a gripping head is mounted on the upper surface of the upper baffle plate. The invention is applied to tensile mechanical property testing of the metallic foil plate.
Description
Technical field
The present invention relates to metal foil plate stretching mechanical property testing method, be specifically related to dither assistant metal paper tinsel plate stretching mechanic property test method.
Background technology
MEMS (MEMS) device and microstructure size usually millimeter and micron dimension even less, the fundamental mechanics performance parameter of minute yardstick mechanism material is as Young's modulus, hot strength, yield limit and Poisson's ratio etc., and the life-span for the reliability and evaluation device that improve MEMS structural design is absolutely necessary.But, during for metal foil plate stretching mechanical property testing, there is style centering, the difficult point of several aspect such as clamping, strain measurement, pattern are fixed.In order to improve the ability of the difficult moulding material of high strength being carried out to high accuracy processing, vibration can be utilized under a lot of occasion to realize specific processing technology requirement, or reduce energy consumption.In the drawing process of metal foil plate, dither can have an impact to the frictional force in material internal and external contact face.The amplitude of dither and frequency also significantly can affect the plastic deformation force of material.Under the condition of dither, the yield limit of material and strength degree can obviously reduce.But, the basic experiment at present vibration machining done and corresponding theoretical research still not deep enough.
Summary of the invention
When the present invention is for solving metal foil plate stretching mechanical property testing, the problem of the difficult point of several aspect such as there is style centering, clamping, strain measurement, pattern are fixed, and then dither assistant metal paper tinsel plate stretching mechanic property test method is proposed.
The present invention is the technical scheme taked that solves the problem: the present invention includes universal testing machine, fixture and chuck, the present invention also comprises piezoelectric ceramics block and guiding mechanism, described guiding mechanism comprises overhead gage, fixed block, lower baffle plate, lower bolster, spring and multiple guide pillar, overhead gage, fixed block, lower baffle plate, lower bolster is from top to bottom successively set in the fixed platform of universal testing machine, lower bolster is connected with fixed block by multiple screw, multiple guide pillar is arranged between overhead gage and lower baffle plate, and the upper end of each guide pillar is respectively connected with the lower surface of overhead gage by a screw respectively, the lower end of each guide pillar is each passed through fixed block and is connected with the upper surface of lower baffle plate by a screw, piezoelectric ceramics block is arranged on fixed head, piezoelectric ceramics block is connected with high frequency electric source, spring is provided with between the lower surface of lower baffle plate and the upper surface of lower bolster, fixture is arranged on the hoistable platform of universal testing machine, chuck is arranged on the upper surface of overhead gage.
The concrete steps of the method for dither assistant metal paper tinsel plate stretching of the present invention Mechanics Performance Testing are as follows:
Step one, clamp with the upper end of fixture by metal foil plate, the lower end of metal foil plate is clamped by chuck, and universal testing machine is connected with data sink;
The vibration frequency of step 2, setting piezoelectric ceramics block is 20Hz-1000Hz, and the amplitude of piezoelectric ceramics block is 0.2 micron-6 microns, starts vibration;
Step 3, startup universal testing machine, the hoistable platform of universal testing machine drives fixture to move upward with the speed of 0.1mm/min-6mm/min, and now, fixture produces stretching action to metal foil plate;
Step 4, sensor and the data sink force and deformation amount to the metal foil plate in metal foil plate drawing process gathers, processes and record.
The invention has the beneficial effects as follows: the present invention can obtain the load-deformation curve of metal foil plate under the effect of dither according to the sensor on universal testing machine; The present invention also can study static lower metal foil plate stretching mechanical property testing, by the load-deformation curve of metal foil plate, can obtain under dither is auxiliary, metal foil plate when being stretched deformation force with the rule of strain variation, and stretch to be formed with metal foil plate in the quiescent state and contrast, obtain the mechanical change rule of metal foil plate in dither assistant metal paper tinsel plate stretching process, meanwhile, also can the fracture behaviour of the lower metal foil plate material of analysis of high frequency vibration.Structure of the present invention is simple, and cost of manufacture is low, and easy to operate being easy to is safeguarded.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention.
Detailed description of the invention
Detailed description of the invention one: composition graphs 1 illustrates present embodiment, described in present embodiment, dither assistant metal paper tinsel plate stretching Mechanics Performance Testing device comprises universal testing machine 1, fixture 2 and chuck 3, present embodiment also comprises piezoelectric ceramics block 4 and guiding mechanism, described guiding mechanism comprises overhead gage 5, fixed block 6, lower baffle plate 7, lower bolster 8, spring 9 and multiple guide pillar 10, overhead gage 5, fixed block 6, lower baffle plate 7, lower bolster 8 is successively set in the fixed platform of universal testing machine 1 from top to bottom, lower bolster 8 is connected with fixed block 6 by multiple screw, multiple guide pillar 10 is arranged between overhead gage 5 and lower baffle plate 7, and the upper end of each guide pillar 10 is respectively connected with the lower surface of overhead gage 5 by a screw respectively, the lower end of each guide pillar 10 is each passed through fixed block 6 and is connected with the upper surface of lower baffle plate 7 by a screw, piezoelectric ceramics block 4 is arranged on fixed head 6, piezoelectric ceramics block 4 is connected with high frequency electric source, spring 9 is provided with between the lower surface of lower baffle plate 7 and the upper surface of lower bolster 8, fixture 2 is arranged on the hoistable platform of universal testing machine 1, chuck 3 is arranged on the upper surface of overhead gage 5.
Universal testing machine 1 in present embodiment refers to CMT8502 microcomputer controlled electronic universal testing machine.
In present embodiment, piezoelectric ceramics block 4 is arranged in fixed block 6, after overhead gage 5, multiple guide pillar 10, fixed head 6, lower baffle plate 7 being fitted together with screw, by screw, all the other lower bolsters 8 are installed together again, now, spring 9 has certain pretightning force, there is certain gap between lower baffle plate 7 and lower bolster 8, then with bolt, lower bolster 7 is fixedly mounted in the fixed platform of universal testing machine 1.
Detailed description of the invention two: composition graphs 1 illustrates present embodiment, described in present embodiment, dither assistant metal paper tinsel plate stretching Mechanics Performance Testing device also comprises sensor 11, and sensor 11 is arranged on the hoistable platform of universal testing machine 1.
The technique effect of present embodiment is: tensile force and the strain of metal foil plate are detected by the sensor of universal testing machine, and are input in data collecting system, the convenient collection to data, process and record.
Other composition and annexation identical with detailed description of the invention one.
Detailed description of the invention three: composition graphs 1 illustrates present embodiment, described in present embodiment, a kind of concrete steps utilizing device described in detailed description of the invention one to carry out the method for dither assistant metal paper tinsel plate stretching Mechanics Performance Testing are as follows:
Step one, clamp with the upper end of fixture 2 by metal foil plate, the lower end of metal foil plate is clamped by chuck 3, and universal testing machine 1 is connected with data sink;
The vibration frequency of step 2, setting piezoelectric ceramics block 4 is 20Hz-1000Hz, and the amplitude of piezoelectric ceramics block 4 is 0.2 micron-6 microns, starts vibration;
Step 3, startup universal testing machine 1, the hoistable platform of universal testing machine 1 drives fixture 2 to move upward with the speed of 0.1mm/min-6mm/min, and now, fixture 2 pairs of metal foil plates produce stretching actions;
Step 4, sensor 11) and the force and deformation amount of data sink to the metal foil plate in metal foil plate drawing process gather, process and record.
In drawing process, the guide pillar 10 of guiding mechanism can ensure that metal foil plate keeps force and deformation all in the vertical directions in drawing process, solves the difficult point of the centering to metal foil plate, clamping.There is elastic deformation, plastic deformation in metal foil plate, last until be pulled off in drawing process.
Detailed description of the invention four: composition graphs 1 illustrates present embodiment, in the step 3 of the method for dither assistant metal paper tinsel plate stretching Mechanics Performance Testing described in present embodiment, the hoistable platform of universal testing machine 1 drives fixture 2 to move upward with the speed of 1mm/min.Other composition and annexation identical with detailed description of the invention three.
Detailed description of the invention five: composition graphs 1 illustrates present embodiment, the vibration frequency setting piezoelectric ceramics block 4 in the step 2 of the method for dither assistant metal paper tinsel plate stretching Mechanics Performance Testing described in present embodiment is 50Hz.Other composition and annexation identical with detailed description of the invention three.
Operation principle of the present invention is: under the effect of universal testing machine 1, when in the process that metal foil plate under tension is stretched, piezoelectric ceramics block 4 can produce certain dither, and drive metal foil plate to produce certain dither by guide pillar 10, spring 9 in guiding mechanism has certain pretightning force, when piezoelectric ceramics block 4 produces displacement downwards, metal foil plate is driven to move downward by guide pillar 10, after the displacement of piezoelectric ceramics block 4 output downwards reaches the maximum of setting, output displacement reduces, guiding mechanism moves upward under the effect of spring 9, until the displacement that piezoelectric ceramics block 4 exports is reduced to zero, and then carry out next vibration cycles.
Claims (3)
1. dither assistant metal paper tinsel plate stretching mechanic property test method, it is characterized in that: the dither assistant metal paper tinsel plate stretching Mechanics Performance Testing device that it adopts comprises universal testing machine (1), fixture (2), chuck (3), piezoelectric ceramics block (4), sensor (11) and guiding mechanism, described guiding mechanism comprises overhead gage (5), fixed block (6), lower baffle plate (7), lower bolster (8), spring (9) and multiple guide pillar (10), overhead gage (5), fixed block (6), lower baffle plate (7), lower bolster (8) is successively set in the fixed platform of universal testing machine (1) from top to bottom, lower bolster (8) is connected with fixed block (6) by multiple screw, multiple guide pillar (10) is arranged between overhead gage (5) and lower baffle plate (7), and the upper end of each guide pillar (10) is respectively connected with the lower surface of overhead gage (5) by a screw respectively, the lower end of each guide pillar (10) is each passed through fixed block (6) and is connected by the upper surface of a screw with lower baffle plate (7), piezoelectric ceramics block (4) is arranged on fixed head (6), piezoelectric ceramics block (4) is connected with high frequency electric source, spring (9) is provided with between the lower surface of lower baffle plate (7) and the upper surface of lower bolster (8), fixture (2) is arranged on the hoistable platform of universal testing machine (1), chuck (3) is arranged on the upper surface of overhead gage (5), sensor (11) is arranged on the hoistable platform of universal testing machine (1),
The concrete steps of described method are as follows:
Step one, with fixture (2), the upper end of metal foil plate is clamped, the lower end of metal foil plate is clamped by chuck (3), universal testing machine (1) is connected with data sink, piezoelectric ceramics block (4) is arranged in fixed block (6), with screw overhead gage (5), multiple guide pillar (10), fixed block (6), after lower baffle plate (7) fits together, by screw, itself and lower bolster (8) are installed together again, now, spring (9) has certain pretightning force, certain gap is had between lower baffle plate (7) and lower bolster (8), with bolt, lower bolster (7) is fixedly mounted in the fixed platform of universal testing machine (1) again,
The vibration frequency of step 2, setting piezoelectric ceramics block (4) is 20Hz-1000Hz, and the amplitude of piezoelectric ceramics block (4) is 0.2 micron-6 microns, starts vibration;
Step 3, startup universal testing machine (1), the hoistable platform of universal testing machine (1) drives fixture (2) to move upward with the speed of 0.1mm/min-6mm/min, now, fixture (2) produces stretching action to metal foil plate;
Step 4, sensor (11) and the force and deformation amount of data sink to the metal foil plate in metal foil plate drawing process gather, process and record.
2. dither assistant metal paper tinsel plate stretching mechanic property test method according to claim 1, is characterized in that: in step 3, the hoistable platform of universal testing machine (1) drives fixture (2) to move upward with the speed of 1mm/min.
3. dither assistant metal paper tinsel plate stretching mechanic property test method according to claim 2, is characterized in that: the vibration frequency setting piezoelectric ceramics block (4) in step 2 is 50Hz.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210584528.9A CN103076226B (en) | 2012-12-28 | 2012-12-28 | Method for testing tensile mechanical property of metallic foil plate with help of high-frequency vibration |
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| CN201210584528.9A CN103076226B (en) | 2012-12-28 | 2012-12-28 | Method for testing tensile mechanical property of metallic foil plate with help of high-frequency vibration |
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| CN104596843A (en) * | 2015-01-16 | 2015-05-06 | 福建工程学院 | Special fixture for shearing substitution test of rubber material |
| CN104614240A (en) * | 2015-01-29 | 2015-05-13 | 南京理工大学 | Film material tensile test-piece |
| CN109632498A (en) * | 2018-10-31 | 2019-04-16 | 中国飞机强度研究所 | Dynamic tensile mechanical property experiment device and experimental method for high polymer material |
| CN109580348A (en) * | 2018-12-07 | 2019-04-05 | 北京工业大学 | Material mechanical property in-situ test device and its test macro |
| CN113523018A (en) * | 2020-04-20 | 2021-10-22 | 苏州大学 | Ultrasonic field-assisted ultrathin plate forming limit testing device and testing method |
| CN112504830B (en) * | 2021-02-07 | 2021-04-27 | 江西省江铜耶兹铜箔有限公司 | Copper foil tension testing device |
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| CN101271103B (en) * | 2008-05-16 | 2010-12-22 | 东南大学 | Experimental device for concrete multifactor permanent stability under co-action of pulling stress and surroundings |
| CN201429552Y (en) * | 2009-02-20 | 2010-03-24 | 重庆大学 | Tensile testing device under ultrasonic vibration on universal material tester |
| CN202599772U (en) * | 2012-03-24 | 2012-12-12 | 无锡风电设计研究院有限公司 | Fatigue tensile tester |
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