CN103543061A - Cross-scale in-situ mechanical dynamic capture test platform - Google Patents
Cross-scale in-situ mechanical dynamic capture test platform Download PDFInfo
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- CN103543061A CN103543061A CN201310478178.2A CN201310478178A CN103543061A CN 103543061 A CN103543061 A CN 103543061A CN 201310478178 A CN201310478178 A CN 201310478178A CN 103543061 A CN103543061 A CN 103543061A
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- 238000012360 testing method Methods 0.000 title claims abstract description 102
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Abstract
The invention relates to a cross-scale in-situ mechanical dynamic capture test platform comprising a control system composed of a computer, a vibration isolation bench, and a mechanical tester. Positioning screw holes distributed in a dot matrix form are on the surface of the vibration isolation bench. The mechanical tester is connected with the control system formed by the computer through a data line. The platform is characterized in that an arc tail is arranged across the two sides of the vibration isolation bench surface and is arranged above the vibration isolation bench surface; an imaging device is arranged on the arc tail; and the imaging device is connected with the control system through a data line. The test platform has the advantages of flexible assembly and diverse functions. With the platform, scientific and effective approach and method are provided for mechanical performance research and testing in the subjects of machinery, material, and the like. The testing result has important significance in revealing mechanical behaviors and failure mechanisms of material or sample under multiple scales. The platform can be widely applied in different engineering fields such as aeronautics and Astronautics, automotive, biomedicine, micro electro mechanical, and the like.
Description
Technical field
The present invention relates to mechanical property test and the detecting instrument of material, be specifically related to a kind of in-situ mechanical multidate information and catch test platform.
Background technology
Conventionally, the mechanical property of material is mainly measured by various testing machines such as tension and compression, torsion, impression, bendings.Traditionally, no matter be dynamic and static load, or the Mechanics Performance Testing under environmental baseline, fluctuating load, its test result is all usingd and is implemented variable quantity after load as test foundation, and the micro-change of material in can not Real-Time Monitoring load implementing, damage are until the dynamic process destroying.Development along with Aeronautics and Astronautics technology and material science and military science, the material parameter that classical macroscopic material mechanical property test instrument and equipment is tested and performance oneself through can not Complete Characterization material in Performance Characteristics that more small scale and maximum conditions are on active service, need to introduce test more directly perceived, accurate, observation and analysis means, with this, mechanical behavior of material and failure mechanism are effectively analyzed and furtherd investigate.
For explore and disclose solid-state material drawing-press-curved-turn round etc. under load grand-microcosmic across the dynamic deformation behavior of yardstick, both at home and abroad minority mechanism be just devoted to development in conjunction with electron microscopic learn a skill, the microcosmic imaging means such as Laser scanning confocal microscopy technology, X-ray diffraction technology, for approach under service condition, measure solid-state material dynamically, the in-situ testing technique of Micro Mechanical Properties.This measuring technology can not only be measured the various mechanics parameters of material, and can be to material the microdeformation in experimentation and damage process is carried out in real time, online observation, iconology qualitative analysis is combined with data quantitative analysis, with the visual field and the test angle of upgrading, disclose the process of material deformation damage under extraneous load, find more novel phenomenon and rule.
The research work of association area at present has only been carried out research for matching and exploitation by in-situ mechanical testing tool and still image treatment facility, also do not consider in-situ mechanical testing tool and can omnidistancely monitor dynamic image and the video capture of test process and the corresponding problem of collecting device, the a set of test platform with taking routine or high speed dynamic process integration of equipments of special shortage, and solve Related Technical Issues, this can miss a large amount of useful testing sites undoubtedly, the multianalysis of impact to dynamic experiments data.
Summary of the invention
The object of the present invention is to provide a kind of high precision mechanics of can realizing to test, across yardstick, multi-frequency dynamic image, catch, and can effectively avoid test vibration to cause the trans-scale in-situ mechanics motion capture test platform of phase mutual interference between device.
Technical scheme of the present invention is consulted accompanying drawing and is described as follows:
A mechanics motion capture test platform, comprises the control system 1, the vibration isolation experiment table that computing machine, consist of
3 and mechanical test instrument 2, vibration isolation experiment table 3 table tops are provided with the positioning screw hole that dot matrix distributes, mechanical test instrument 2 is installed on the positioning screw hole place of vibration isolation experiment table 3 table tops by set bolt, mechanical test instrument 2 is connected with the control system 1 that computing machine forms by data line, arc track 4 is across the both sides of vibration isolation experiment table 3 table tops and be installed on vibration isolation experiment table 3 table tops tops, an Image-forming instrument 5 is installed on arc track 4 by Image-forming instrument mounting bracket 6, a light source 8 is fixed on arc track 4 by flexible support 7, Image-forming instrument 5 is connected with control system 1 by data line.
On described vibration isolation experiment table 3 table tops, a translucent cover 9 is installed; The inner honeycomb that adopts of described vibration isolation experiment table 3 shoring of foundation.
In the middle of described arc track 4, there is guide groove 14, Image-forming instrument 5 is arranged on arc track 4 by an instrument support, described instrument support is comprised of lateral frame 10, longitudinal support fastening bolt 11, longitudinal support 12, Image-forming instrument erection bolt 13, video camera is fixed on longitudinal support 12 by Image-forming instrument erection bolt 13, longitudinal support 12 is through sleeve pipe and lateral frame 10 sockets of lateral frame 10 front ends, and fixing by longitudinal support fastening bolt 11, lateral frame 10 rear ends are arranged in guide groove 14 by clamp nut.
Described Image-forming instrument mounting bracket 6 is arranged in the guide groove 14 on cambered way 4 by clamp nut, and be adjusted to the position as apparatus installation support 6 by clamp nut, thereby carry out the in-situ observation of different angles, described Image-forming instrument mounting bracket 6 is comprised of support in length and breadth, longitudinal support 12 is fixing by Image-forming instrument erection bolt 13 and Image-forming instrument 5, and longitudinal support 12 is fixing by longitudinal support fastening bolt 11 with lateral frame 10 paper parts, adjusting.
Described flexible support 7 is arranged on the optional position of guide groove 14 by clamp nut, by the mobile or crooked irradiation position that regulates arbitrarily external application light source 8.
Described mechanical testing instrument 2 is the accurate mechanics testers of stretching/compressing.
Described mechanical testing instrument 2 is to reverse accurate mechanics tester.
Described mechanical testing instrument 3 is the accurate mechanics testers of impression.
Described mechanical testing instrument 2 is crooked accurate mechanics testers.
Beneficial effect of the present invention is, different demands for the test of high precision mechanics, when realization is obtained subsized specimen conventional mechanical property data, can, by taking the reasonable selection of device and mechanical testing instrument in test platform, can realize the real-time shooting of different amplification and different motion speed dynamic image; By taking device freely the locating of arc track, can realize any selection of multi-angle visual field; By freely selecting, change mechanical testing instrument, can realize the in-situ test of multiple mechanical properties such as comprising stretching/compressing, torsion, impression, bending and various fatigues.Meanwhile, each device is independent installation on vibration isolation experiment table respectively, and available buffer also reduces the impact shock causing because of test piece deformation, fracture etc., thereby has improved picture catching quality and data testing accuracy.This test platform aims at mechanics study forward position, assembling flexibly, diverse in function, strong innovation, for the mechanical property research of the subjects such as machinery, material and detection provide science, effective measure, testing result is significant at mechanical behavior and failure mechanism under multiple dimensioned for disclosing material or test specimen.Meanwhile, this test platform also can be widely used in Aero-Space, auto industry, biomedicine, the different engineering fields such as micro electronmechanical, has higher scientific research and is worth and good Commercial Prospect.
Below in conjunction with drawings and Examples, the present invention will be further described.
Accompanying drawing explanation
Fig. 1 is overall appearance structural representation of the present invention;
Fig. 2 is the structural representation of Image-forming instrument governor motion of the present invention;
Fig. 3 is Image-forming instrument of the present invention and the table top structural representation while being 0 degree angle;
Fig. 4 is the accurate mechanics tester of the stretching/compressing structural representation that the present invention uses;
Fig. 5 is the accurate mechanics tester of the torsion structural representation that the present invention uses;
Fig. 6 is the accurate mechanics tester of the impression structural representation that the present invention uses;
Fig. 7 is the accurate mechanics tester of bending of the present invention structural representation.
In figure: 1, control system; 2, mechanical test instrument; 3, vibration isolation experiment table; 4, arc track; 5, Image-forming instrument; 6, Image-forming instrument mounting bracket; 7, flexible support; 8, light source; 9, translucent cover; 10, lateral frame; 11, longitudinal support fastening bolt; 12, longitudinal support; 13, Image-forming instrument erection bolt; 14, guide groove.
Embodiment
Below in conjunction with accompanying drawing illustrated embodiment, further illustrate particular content of the present invention and embodiment thereof.
A kind of trans-scale in-situ mechanics motion capture test platform, comprise the control system 1 being formed by computing machine, vibration isolation experiment table 3 and mechanical test instrument 2, the positioning screw hole that has dot matrix to distribute on vibration isolation experiment table 3 table tops, mechanical test instrument 2 is installed on the suitable positioning screw hole place of vibration isolation experiment table 3 table tops by set bolt, mechanical test instrument 2 is connected with the control system 1 that computing machine forms by data line, arc track 4 is across the both sides of vibration isolation experiment table 3 table tops and be installed on vibration isolation experiment table 3 table tops tops, an Image-forming instrument 5 is installed on arc track 4, a light source 8 is fixed on arc track 4 by flexible support 7, Image-forming instrument 5 is connected with control system 1 by data line.
Referring to Fig. 1 to Fig. 6, trans-scale in-situ mechanics motion capture test platform of the present invention, comprises the parts such as control system 1, accurate mechanics tester 2, vibration isolation experiment table 3, arc track 4, Image-forming instrument 5, Image-forming instrument mounting bracket 6, flexible support 7, external application light source 8, translucent cover 9 and accessory.
Described control system 1 is connected with Image-forming instrument 5 with mechanical test instrument 2 through data line, by software, realizes the control to above-mentioned two kinds of devices, and Real-time Obtaining two device work form thus signal or data.
Described in-situ mechanical tester 2 is installed on the suitable positioning screw hole place of vibration isolation experiment table 3 by set bolt, can experimentally need to be installed as dissimilar in-situ mechanical testing tool, as the stretching/compressing in-situ mechanical tester in Fig. 6, the torsion in-situ mechanical tester in Fig. 7 etc., the tired experimental apparatus of various tests can also be installed, can realize respectively the in-situ mechanical test experiments of stretching/compressing, torsion, impression, bending and the various fatigues of material, with this, measure the different mechanical properties parameter of material.
Described vibration isolation experiment table 3 shoring of foundation adopt compound substance solid damping isolation, heart adopts honeycomb, table top is distributed with indeformable M6 installation screw, being spacing 25X25 or 50X50mm dot matrix distributes, natural frequency is not more than 6Hz, amplitude is not more than 5um, stabilized structure is reliable, can effectively alleviate various in-situ mechanical testing tools and the mechanical vibration of institute's test block in test process thereof, thereby make test specimen in whole test process, can both be imaged the clear seizure of system, the in-situ observation quality of test experiments is promoted, be convenient to the microdeformation of observation and analysis material, damage and fracture process, thereby the mechanical characteristic of more deep announcement material and damage mechanism.
Described arc track 4 is arranged on the suitable positioning screw hole place of vibration isolation experiment table 3 by fastening bolt, there is a semicircular arc track 14 above, by regulating clamp nut, can make Image-forming instrument mounting bracket 6 moving in stepless way on straw 14, with this, realize Image-forming instrument 5 monitoring from different perspectives.
Described Image-forming instrument 5 is fixed on arc track 4 by clamp nut by Image-forming instrument mounting bracket 6, and loosening clamp nut can be realized Image-forming instrument 5 and locate on arc track 4 with optional position.Image-forming instrument 5 can be realized the taking dynamically, in real time of test specimen on mechanical test instrument 2, and its parameter area is, filming frequency: 30 hardwood-10000 hardwood/seconds; Visual field: 0.01 * 0.01-20 * 20mm; Resolution: 512 * 512-1920 * 1080 pixels; Enlargement ratio: 1:1-1:1000.
Described Image-forming instrument mounting bracket 6 is partly comprised of lateral frame 10, longitudinal support fastening bolt 11, longitudinal support 12, Image-forming instrument erection bolt 13 etc.As shown in Figure 2, Image-forming instrument mounting bracket 6 is arranged in the straw 14 on arc track 4 by clamp nut, according to the installation situation of the concrete needs of experiment and mechanical test instrument 2, can be adjusted to by clamp nut the position of picture apparatus installation support 6, thereby carry out the in-situ observation of different angles.By longitudinal support fastening bolt 11, can also regulate the distance of Image-forming instrument 5 and test specimen.
Described external application light source 8 is fixed on arc track 4 by clamp nut by flexible support 7, for Image-forming instrument 5 provides enough light, by mobile or crooked flexible support 7, can regulate arbitrarily the irradiation position of external application light source 8, to realize shooting effect, reach best.
Described translucent cover 9 is installed on vibration isolation experiment table 3 by hinge, can effectively alleviate the interference of extraneous factor to test experiments, and the handle by translucent cover 9 one sides can be started a side that is put into vibration isolation experiment table 3.
The present invention is in concrete test process, and first, mechanical test instrument 2 that be dissimilar according to need to choosing of test experiments, opens translucent cover 9, with special-purpose set bolt, selected mechanical test instrument 2 is arranged on to the appropriate location of vibration isolation experiment table 3; Secondly, by the requirement of selected mechanical test instrument 2, the materials processing that will test is become to standard-sized test exemplar, and utilize small-sized buffing machine to carry out to test specimen the better surface smoothness that polishing obtains can be used for the monitoring of high resolving power micro-imaging; Then, the experiment exemplar processing is installed on the fixture of mechanical test instrument 2, location clamps to be measured; Again, regulating system, difference opening control 1 and Image-forming instrument 5, by be adjusted to as apparatus installation support 6, make Image-forming instrument 5 camera lens with suitable angle and distance the appropriate location over against test specimen, by regulating flexible support 7 to make external application light source 8 in suitable position, open external application light source 8, again regulate the position of the position of Image-forming instrument 5 and the focal length of camera lens and aperture size and external application light source 8, make test specimen can present the image of complete display, close external application light source 8, close translucent cover 9, setup test; Finally, start test: again open external application light source 8, start imaging system monitoring, open distortion or the load control mode of specified load test, mode with pulse output drives beginning test process, by testing algorithm program setting test condition and parameter, under the effect of time sequential pulse control signal, precision DC servomotor is exported accurate angular displacement, final realization loads the Ultra-Low Speed quasistatic of standard specimen, sophisticated sensor in test process on mechanical test instrument 2 detects load F, and makes necessary correcting process by algorithm routine; Simultaneously the deflection h of test specimen is synchronously picked up by the precise displacement sensor on mechanical test instrument 2, and two paths of signals is by analog to digital conversion and carry out sending into computing machine after necessary signal condition.In the whole process of test, the deformation damage situation of tested standard specimen material under load is carried out dynamic monitoring by Image-forming instrument 5, this recorded a video simultaneously and preserve, the important mechanics parameters such as elastic modulus, yield strength, shear modulus and breakdown strength that also can Real-time Obtaining exosyndrome material mechanical property by host computer debugging software.By the analysis to the microdeformation of material structure and destruction thereof, damage status video image, the various parameters that coordinate exosyndrome material mechanical property, just can be to material the deformation damage mechanism under load and mechanics military service behavior thereof further investigate, thereby the performance of more thorough Knowing material.
Claims (9)
1. a trans-scale in-situ mechanics motion capture test platform, comprise the control system (1), vibration isolation experiment table (3) and the mechanical test instrument (2) that by computing machine, are formed, vibration isolation experiment table (3) table top is provided with the positioning screw hole that dot matrix distributes, mechanical test instrument (2) is installed on the positioning screw hole place of vibration isolation experiment table (3) table top by set bolt, mechanical test instrument (2) is connected with the control system (1) that computing machine forms by data line, it is characterized in that:
An arc track (4) is across the both sides of vibration isolation experiment table (3) table top and be installed on vibration isolation experiment table (3) table top top, an Image-forming instrument (5) is installed on arc track (4) by Image-forming instrument mounting bracket (6), it is upper that a light source (8) is fixed on arc track (4) by flexible support (7), and Image-forming instrument (5) is connected with control system (1) by data line.
2. trans-scale in-situ mechanics motion capture test platform according to claim 1, is characterized in that:
On described vibration isolation experiment table (3) table top, a translucent cover (9) is installed; The inner honeycomb that adopts of described vibration isolation experiment table (3) shoring of foundation.
3. trans-scale in-situ mechanics motion capture test platform according to claim 1 and 2, is characterized in that:
In the middle of described arc track (4), there is guide groove (14), Image-forming instrument (5) is arranged on arc track (4) by an instrument support, described instrument support is by lateral frame (10), longitudinal support fastening bolt (11), longitudinal support (12), Image-forming instrument erection bolt (13) forms, video camera is fixed on longitudinal support (12) by Image-forming instrument erection bolt (13), longitudinal support (12) is through sleeve pipe and lateral frame (10) socket of lateral frame (10) front end, and fixing by longitudinal support fastening bolt (11), lateral frame (10) rear end is arranged in guide groove (14) by clamp nut.
4. trans-scale in-situ mechanics motion capture test platform according to claim 3, is characterized in that:
Described imaging system mounting bracket (6) is arranged in the guide groove (14) on cambered way (4) by clamp nut, and by clamp nut, regulate the position of imaging system mounting bracket (6), thereby carry out the in-situ observation of different angles, described Image-forming instrument mounting bracket (6) is comprised of support in length and breadth, longitudinal support (12) is fixing by imaging system erection bolt (13) and Image-forming instrument (5), and longitudinal support (12) is fixing by longitudinal support fastening bolt (11) with lateral frame (10) paper part, adjusting.
5. trans-scale in-situ mechanics motion capture test platform according to claim 3, it is characterized in that: described flexible support (7) is arranged on the optional position of guide groove (14) by clamp nut, by the mobile or crooked irradiation position that regulates arbitrarily external application light source (8).
6. trans-scale in-situ mechanics motion capture test platform according to claim 1, is characterized in that:
Described mechanical testing instrument (2) is the accurate mechanics tester of stretching/compressing.
7. trans-scale in-situ mechanics motion capture test platform according to claim 1, is characterized in that:
Described mechanical testing instrument (2) is to reverse accurate mechanics tester.
8. trans-scale in-situ mechanics motion capture test platform according to claim 1, is characterized in that:
Described mechanical testing instrument (3) is the accurate mechanics tester of impression.
9. trans-scale in-situ mechanics motion capture test platform according to claim 1, is characterized in that: described mechanical testing instrument (2) is crooked accurate mechanics tester.
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| CN111751389A (en) * | 2020-07-07 | 2020-10-09 | 中易创新(北京)科技有限公司 | X-ray three-dimensional imaging nondestructive testing device |
| CN113848041A (en) * | 2021-09-27 | 2021-12-28 | 歌尔光学科技有限公司 | Optical performance test system and test method |
| CN113848041B (en) * | 2021-09-27 | 2024-04-30 | 歌尔光学科技有限公司 | Optical performance test system and test method |
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| CN113848041B (en) * | 2021-09-27 | 2024-04-30 | 歌尔光学科技有限公司 | Optical performance test system and test method |
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Effective date of registration: 20231101 Address after: Room 7062, Building 2, No. 2098 Hezhuang South Road, Hangzhou Airport Economic Zone, Xiaoshan District, Hangzhou City, Zhejiang Province, 311200 Patentee after: Ruiji Biomimetic Intelligent Manufacturing Technology (Hangzhou) Co.,Ltd. Address before: 130012 No. 2699 Qianjin Street, Jilin, Changchun Patentee before: Jilin University Patentee before: Zhang Zhihui |
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