CN204202569U - Extensometer - Google Patents
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- CN204202569U CN204202569U CN201420060166.8U CN201420060166U CN204202569U CN 204202569 U CN204202569 U CN 204202569U CN 201420060166 U CN201420060166 U CN 201420060166U CN 204202569 U CN204202569 U CN 204202569U
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Abstract
The utility model relates to a kind of extensometer.The structure of described extensometer comprises: laser system, and described laser system is radiated at the test sample on test board for generation of laser; Imaging system, described imaging system is used for the image of collecting test sample; Measuring system, described measuring system is used for test pattern collection control and picture signal process, draws measurement data, and data is exported; Described measuring system is associated with laser system and imaging system.Extensometer of the present utility model, adopt the Uniting of laser system and imaging system, there is compact conformation, multi-functional, precision is high, the advantage of good environmental adaptability, adopt extensometer of the present utility model to measure, have the advantages that measuring method is easy, measurement function is many, measuring accuracy is high.
Description
Technical field
The utility model relates to a kind of stress measuring device about material, particularly a kind of extensometer.
Background technology
At present about the non-cpntact measurement of material stress deformation, usually adopt optics extensometer to measure, conventional has laser extensometer and Video Extensometer two kinds.Existing laser is extended and is counted unidirectional one-dimensional measurement, be to be marked relative to sample by line laser light source between linear sweep, the change of the electric signal that scanning obtains is processed, obtain the distance between two marks, thus measure the extension and the strain that draw material, its shortcoming be can only export data can not output image (sheet), measurement range is generally no more than the length of 130mm by line source restriction.Existing Video Extensometer is not by illumination optical design and Electric signal processing Uniting, need user's autogamy illuminator, the picked-up of video can be subject to ambient light interference, and on testing machine, add light shield apparatus and light irradiation apparatus inconvenience also unrealistic, therefore its video image quality obtained can not ensure, use inconvenience, precision is forbidden, only only has a few micron accuracy in actual use, and existing Video Extensometer does not have static images manual measurement function, the fracture distance test after sample fracture (measurement elongation after fracture) can not be solved, the problems such as fracture diameter test (Measure section shrinkage factor).Due to the defect that above-mentioned prior art exists, need to improve the optical system of extensometer and electricity system, enable effectively expand its test function and improve its measuring accuracy.
Summary of the invention
The purpose of this utility model is the above-mentioned technological deficiency solving the existence of existing extensometer technology, there is provided a kind of by the extensometer of optical system and electricity system Uniting, make the acquisition of video not by ambient light interference, by the high-quality video image obtained, non-touch precision measurement is carried out to the stress deformation of sample, accurate measurement data can either be provided, there is again dynamic, static multinomial measurement function, to overcome the defect that method of testing is complicated, precision is not high, testing efficiency is not high that prior art exists.The utility model provides a kind of technical scheme of extensometer, and the structure of described extensometer comprises: laser system, and described laser system is for generation of the test sample on continuous laser exposure experiment board; Imaging system, described imaging system is used for the image of collecting test sample; Measuring system, described measuring system is used for test pattern collection control and picture signal process, draws measurement data, and data is exported; Described measuring system is connected with laser system, imaging system.
Extensometer of the present utility model, adopt the Uniting of optical system and imaging system, pass through laser system, cooperatively interacting of imaging system and measuring system, and with test board combination, there is compact conformation, multi-functional, the advantage that precision is high, the Video Extensometer design of continuous laser source that what the utility model adopted have, solve the problem that measuring accuracy is not high well, simultaneously, expand the test function of extensometer, use extensometer of the present utility model, the fracture distance test (measurement elongation after fracture) after sample fracture can be carried out easily, the tests such as fracture diameter test (Measure section shrinkage factor), make the stressed measuring process of material very convenient, measuring accuracy is high, measurable maximum strain scope is well promoted, error is little, measure consistance and reproducible, the light intensity of the LASER Light Source adopted is much larger than ambient light intensity, basic elimination light disturbance, test environment adaptability is greatly improved, can measure under rugged environment, well overcome the defect of prior art, have efficient, easy, flexibly, the feature of multifunctional testing accurately.
Accompanying drawing explanation
The schematic diagram of the extensometer of Fig. 1 the utility model embodiment one;
The extensometer structural representation of Fig. 2 the utility model embodiment two;
Fig. 3 is the principle of work schematic diagram of the kinetic measurement of measuring system of the present utility model.
Reference numeral:
1 laser system 11 laser light-source device 12 prism group
2 imaging system 21 imaging device 22 sensing devices
3 measuring system 31 test pattern acquisition control device 32 image signal processing apparatus 33 data output devices
4 test boards 41 test board interface
5 sample 51a, 51b test badges.
Embodiment
Embodiment one
Fig. 1 is the schematic diagram of extensometer of the present utility model, and composition graphs 1 is described for the structure of extensometer of the present utility model.
Extensometer as shown in Figure 1, comprising: laser system 1, and described laser system 1 is radiated on the test sample 5 of test board for generation of laser; Imaging system 2, described imaging system 2 is for absorbing the image of test sample 5; Measuring system 3, described measuring system 3, for test pattern collection control and picture signal process, draws measurement data, and data is exported; Described measuring system 3 is connected with described imaging system 2 with described laser system 1.When testing sample, described measuring system 3 is connected with test board 4 by test board interface 41.
In extensometer of the present utility model, described laser system 1 comprises laser light-source device, and described LASER Light Source is continuous laser source, and continuous laser source can choose polytype, as Solid State Laser source, semiconductor laser light source, gas laser source and liquid laser source.
In described imaging system 2, imaging system 2 comprises imaging device, sensing device, is regulated by the frame rate to the image absorbed, resolution, areas imaging, brightness, obtains the digital picture clearly of sample 5, sends it in measuring system 3.Meanwhile, also scope that image chooses, time shutter, contrast is adjusted, to improve image-sampling frequency (i.e. frame frequency) and picture quality by measuring system 3.Under normal circumstances, by selecting little interested sweep limit to improve frame frequency.Described laser system 1 is compact being disposed adjacent with described imaging system 2, makes the direction of LASER Light Source direction of illumination and imaging device basically identical.
In described measuring system 3, comprise test pattern acquisition control device, image signal processing apparatus, data output device, described measuring system 3 carries out collection and process in real time for the image obtained by imaging system, draw test result, finally by the data record of test result, display or output, when testing sample, described measuring system 3 exports to test board 4 by test board interface 41.
Described measuring system 3 is connected with test board 4 by described test board interface 41, and described test board 41 receives the measurement data signals of measuring system 3, for the work of Control experiment board 4 by test board interface 41; The measuring system 3 of described extensometer can also be connected with computer platform 6, by measurement result Shuo according to Shu Chu Give computer platform, is operated measurement by computer platform; The measuring system 3 of described extensometer also can be connected with display device, memory storage, printing equipment, and the test result data of measuring system 3 is exported to display device, memory storage or printing equipment, carries out showing, preserve and printing for measurement result.
embodiment two
Accompanying drawing 2 is structural representations of the extensometer about the present embodiment, and by reference to the accompanying drawings 1, accompanying drawing 2 is described further for the structure of extensometer of the present utility model and measuring method thereof.As shown in Figure 1, in described extensometer, include laser system 1, imaging system 2, measuring system 3, in use, described measuring system 3 is connected with test board 4 by test board interface 41, and the test macro of described extensometer can be connected with computer platform 6.
In Fig. 2 of the present utility model, show sample 5 to be measured in figure, sample 5 is provided with test badge 51a, 51b, mark 51a, 51b that described sample 5 is arranged are bar-shaped marks, described two bar-shaped marks edge boundary are obvious and almost parallel, simultaneously vertical with sample loading direction; Slug that can be different according to the range of strain choice for use of test material, as paper slip, adhesive sticker bar or usage flag pen mark.The setting of described test badge 51a, 51b should remain in the scope of imaging system images, and after breaking, two test badges also will remain in the scope of imaging system images simultaneously.After sample arranges test badge 51a, 51b, sample 5 is arranged on test board, be located at laser system 1 and imaging system 2 just right direction.
In laser system 1 of the present utility model, described laser system 1 comprises laser light-source device 11, described laser light-source device 11 selects continuous laser source, in order to adapt to the measurement requirement of various different sample 5, the LASER Light Source of described laser light-source device 11 selectively can be set to the continuous laser source of power adjustable, according to the different sizes of sample 5, select the LASER Light Source of different output power.In order to reach desirable light source effect, also comprise in described laser system 1 and be provided with prism group 12, the laser beam that laser light-source device 11 sends is expanded, shaping adjusts, by carrying out shaping with described prism group 12 pairs of laser beams, expand, the tapered light beam that shape forms an angle, make the test badge 51a of test sample 5, 51b is roughly positioned at the middle position of laser beam institute range of exposures, adjustment sample 5 makes its plane and laser beam axis substantially vertical, make the plane uniform intensity of sample 5, and light intensity is much larger than environmental light intensity, substantially to eliminate light disturbance.Described laser system 1 also can have regulating device (not shown), for regulating the output power of LASER Light Source and regulating prism group 12, makes the optical axis of LASER Light Source substantially parallel with imaging system 2 optical axis.
In imaging system 2 of the present utility model, the sensing device 22 that described imaging system 2 comprises imaging device 21 and is attached thereto.Described imaging device 21 comprises imaging lens.Regulated by the clear aperature to areas imaging, imaging lens, focal length, obtain the picture rich in detail of sample 5.In order to obtain high-quality imaging effect, imaging lens can be the imaging lens head group of multiple camera lens composition.In order to eliminate the impact of light disturbance for image quality, polaroid can also be provided with before imaging lens head group, polaroid camera lens be set as adopted, polaroid camera lens and imaging lens are socket-connected, by regulating for polaroid camera lens, to eliminate light disturbance.By regulating imaging lens and polaroid, eliminate the interference of environment veiling glare, the areas imaging of pickup image, brightness, frame rate, resolution are regulated, realizes the adjustment for the sharpness of pickup image and the image quality of dynamic image, acquire the image of high-quality.Imaging system 2 and laser system 1 are set to adjacent compact setting, make the lens axis of imaging system 2 substantially consistent with the optical axis of LASER Light Source as far as possible.Further, described imaging system 2 can also comprise regulating device (not shown), realizes the adjustment to the imaging definition of imaging system and the quality of dynamic image by described regulating device.The imaging device 21 of imaging system 2 can select existing digital imaging devices to be configured, as Digital Video, digital camera devices, by obtaining the high-quality picture rich in detail of sample for mode such as adjustment aperture, pixel etc.The sensing device 22 of described imaging system 2 comprises ccd image sensing device, as the industrial digital CCD sensing device of high gray resolution image can be selected, described sensing device 22 is connected by high-speed bidirectional data line with measuring system 3, sends the digital image information that imaging system 2 obtains to measuring system 3.Described imaging system 2 also has memory storage (not shown), and the duty parameters of sensing device 22 is stored in this memory storage.Adjusted by the parameter of measuring system 3 pairs of sensing devices 22, as adjusted sweep limit, time shutter, contrast, to improve frame frequency (sample frequency) and picture quality.
In measuring system 3 of the present utility model, comprise test pattern acquisition control device 31, image signal processing apparatus 32, data output device 33, described image signal processing apparatus 32 is connected with described test pattern acquisition control device 31, data output device 33; Described its structure of test pattern acquisition control device 31 comprises image pick-up card, memory storage, and described image signal processing apparatus 32 comprises memory storage, data processor etc., and described data output device comprises data output interface.The image transmitted for the sensing device 22 of imaging system 2 by test pattern acquisition control device 31 is sampled, image information is carried out data processing by image signal processing apparatus 32, draw measurement result, by data output device 33, measurement result is exported.Further specifically, described test pattern acquisition control device 31 carries out gathering and storing for image for the image that imaging system 2 obtains, the memory storage of described image signal processing apparatus 32 stores the data in nominal data storehouse, and namely these data are the linear corresponding relation data of pixel distance and physical distance.Data processor is by detecting the in white and black test badge 51a in sample 5 image that gathers, the pixel data of the edge line of 51b, according to the sub-pixel edge location algorithm that fringe region detects, as sub-pixel interpolation algorithm etc., calculate the sub-pix distance between two edge lines, realize for the test badge 51a in image, range observation between 51b, can by the test badge 51a drawn, sub-pix distance between 51b, the data (linear corresponding relation of pixel distance and physical distance) in the nominal data storehouse stored according to the memory storage of image signal processing apparatus 32 convert and draw actual physical distance, also test result data can be exported by data output device 33, record, display, and test board can be exported to through test board interface 41.Described measuring system 3 can be connected with computer platform 6, by the data output interface of described data output device 33, the trial image obtained, test result can be shown by computer platform, also can be operated by the test of computer platform 6 for the measurement of measuring system 3 and test board 4.
Measuring system 3 of the present utility model, by test board interface 41, is connected with test board 4.During test, the sample 5 carrying out test badge is arranged on test board 4, is manipulated by the loading work of control device (not shown) to test board 4 testing board 4, carry out the stressed load test for sample to be tested.Described measure and control device can be connected with computer platform 6, test manipulation condition data can be inputted by computer platform 6, other sensor signals of measure and control device acceptance test board 4 and the signal input data of measuring system 3, manipulate test board according to test method.
In the measuring system 3 of the utility model extensometer, sample 5 kinetic measurement is under loading achieved in that to dynamic image imaging system 2 transmitted carries out Real-time Collection by measuring system 3, store, described image storage is the digitized greyscale signal storing each pixel of every frame in the matrix form, during every frame end, based on the sub-pixel edge location algorithm that the fringe region of image detects, concrete as sub-pixel interpolation algorithm, automatic search, test badge 51a in test samples, the edge line of 51b, determine to mark 51a, the coordinate of 51b, calculate the sub-pix distance between two edge lines, actual physics distance, by comparing process to real-time distance (L) and raw range (original gauge length L0), dynamic test is carried out to the strain ((L-L0)/L0) of sample 5.
In concrete measurement, the data of above-mentioned measuring system 3 export, and can arrange two kinds of different data and export: a kind of is the length L of the actual samples measured, can in units of pixel, can in units of mm after demarcation; Be the deformation quantity in sample drawing process, after original gauge length L0 is set, export deformation quantity data Δ L=L-L0.Measuring accuracy can be improved by the resolution improving imaging system 2, and the so-called resolution that improves refers to the number of pixels improved in standard unit's length.Such as when focal length F=29mm, the number of the pixel required for measurement standard distance L=85mm is 368.05, and namely the distance of two pixels represents 85/368.05(mm).If by changing the focusing focal length of imaging system, time as made focal length F=89mm, the number of the pixel required for same measurement standard distance L=85mm is 980.67, and the distance between this time two pixels represents 85/980.67(mm).Obviously, the latter's precision is significantly improved relative to the former measuring accuracy.
In the present embodiment, owing to expanding the semiconductor laser uniform irradiation of shaping through optical system at specimen surface, make specimen surface distribution of light intensity much larger than test site environmental light intensity to eliminate light disturbance, the laser image of high-resolution industrial CCD face sensor array collection reflection, will obtain the real-time deformation measurement data needed after process in image input measurement system 3.
Embodiment three
As the principle of work schematic diagram that Fig. 3 is the kinetic measurement of measuring system of the present utility model, in conjunction with this schematic diagram, in the present embodiment the concrete measuring method step utilizing extensometer of the present utility model to test is further described.
In the measurement using described the utility model extensometer, there are following steps: arrange and sample 5 is installed: test badge 51a, 51b are set on sample 5 to be measured, and sample is fixed on test board 4, make described test badge 51a, 51b remain in the areas imaging of imaging device 21; Regulate laser system 1: the LASER Light Source 11 selecting corresponding power according to the size of sample 5, regulate laser beam, laser beam positive control is penetrated on sample 5, makes the plane of sample 5 and optical axis substantially vertical; Regulate imaging system 2: by regulating device, regulate the lens axis of light source light axis and imaging system 2 basically identical, debugging obtains the picture rich in detail of sample; Test: carry out load test by test board 4 for sample, imaging system 2 absorbs the image of load test process; Measure: the Sample Image obtained in measuring system 3 acquisition test process, processes in real time image, provide real-time measuring data.Measurement data can be transmitted test board 4 by measuring system 3, and test board 4 pairs of loading procedures carry out closed-loop control.Such as, metal material stretching test, require that tensile strain ((L-L0)/L0) speed of test material will control to the desired value of 0.00025/S ± 20%, test material sample loading force given by testing table 4, receive measuring system 3 simultaneously and transmit the material strain data of coming, with control objectives Data Comparison, increase or reduce loading force, moving in circles to make material strain speed reach the strain rate of material experimental standard requirement.Imaging system 2, measuring system 3 pairs of loading procedures carry out image capture and collection in real time and measure.After test board 4 loading procedure terminates, measuring system 3 transfers static images measurement pattern to and has continued other result parameter of test as the test of elongation after fracture, reduction of area.
Arranging in installation sample 5, test badge 51a, 51b is made to be two strip marks, be arranged on substantially in parallel on sample, should keep test badge in the scope that imaging system 2 is made a video recording, after breaking, two test badges also will remain in the scope of imaging system shooting simultaneously.
In the step regulating laser system 1, the LASER Light Source 11 of suitable power is selected according to sample, by prism group, the light beam of laser is carried out shaping, expanded, the tapered light beam that shape forms an angle, make laser beam axis and sample plane substantially vertical, regulate light source light axis substantially parallel with the camera lens optical axis line of imaging system 2.
In adjustment imaging system 2 step, by being adjusted to the picture rich in detail obtaining sample as lens group and imageing sensor, regulate areas imaging, the focal length of imaging system 2 imaging as required, can by obtaining sample high quality graphic to the uniting and adjustment of lens aperture, camera lens polaroid, image sensing device.
In testing, controlled by the load test of measure and control device (not shown) to sample 5 testing board 4, described measure and control device receives measuring system 3 and measures the strain data drawn, contrast strain rate controls, the loading procedure of target control test board 4, to realize the closed-loop control to sample 5 tensile strain rate.
In measuring process, carry out static state, kinetic measurement by the test of measuring system 3 pairs of samples.Specifically, described static measurement, by selecting to need to measure 2 points on picture, carry out image real time transfer through measuring system and calculate distance between 2, namely be single static picture by freezing dynamic image, picture is selected any two points needing to measure, image real time transfer is carried out for described 2 by measuring system 3, calculate the distance between these 2, and measurement result is exported automatically, by described static measurement, realize the result parameter after sample load test is completed, as post-rift fracture distance, fracture diameter is measured.As shown in Figure 3, it is the principle of work schematic diagram of the kinetic measurement of measuring system of the present utility model, described kinetic measurement, be after completing for each image frame grabber in loading procedure, to the indicia band 51a of this image, the distance (L) between 51b is measured in real time, compared with raw range (L0) when just starting with test, conversion draws strain ((L-L0)/L0) test data of sample, and namely complete dynamic sampling, test, sample frequency is frame frequency.Further particularly, the dynamic image that imaging system 2 transmits by the test pattern acquisition control device 31 in the measuring system 3 of extensometer carries out Real-time Collection, store, described image storage is the digitized greyscale signal storing each pixel of every frame in the matrix form, when after the storage completing each two field picture, image signal processing apparatus 32 pairs of images carry out base conditioning, improve picture quality, based on the sub-pixel edge location algorithm that the fringe region of image detects, as sub-pixel interpolation algorithm, automatic search, test badge 51a in test samples, the edge line of 51b, determine to mark 51a, the coordinate of 51b, calculate the sub-pix distance between two edge lines, the data of sub-pix distance and the linear relationship of actual physics distance are had by nominal data stock, by sample marking 51a, sub-pix distance transform between 51b goes out actual physics distance (L), compared with raw range (L0), draw strain ((L-L0)/L0 data of sample, complete the kinetic measurement of this two field picture, gained measurement data can be exported by data output interface through data output device 33, measuring system 3 processes continuously to the every two field picture obtained, realize carrying out kinetic measurement to the strain of test sample 5 in loading procedure.The realtime graphic obtained in loading procedure is freezed, by the measurement to this width freeze frame, the static measurement for test can be realized.
Such as to the Mechanics Performance Testing of steel curved beam: the strain data being received measuring system 3 by test board interface 41, according to GB/T228.1-2010 testing standard, the size of continuous adjustment loading force, the closed loop carrying out straining stretches and controls, closed loop control process carries out under certain sampling, controlled frequency, is dynamic.After sample is broken, controlled loading process stops, sample is transfixion on test board stand, measuring system 3 can transfer dynamical surveying mode to, measure other test findings parameter, as elongation after fracture, the test of reduction of area, the method adopted freezes piece image, continuing to measure the original gauge length before the distance L0d(stretching of two marks of having no progeny is L0), select two measurement points of fracture, measuring system 3 measures fracture distance Ld automatically, according to formula: elongation after fracture=(L0d-L0-Ld)/L0, measuring system 3 calculates the elongation after fracture of sample automatically.For cylindrical sample, the diameter Rd(of all right static measurement fracture tests front diameter Ro), according to formula: reduction of area Z=(Ro
2-Rd
2)/Ro
2* 100%, measuring system 3 calculates reduction of area automatically.
Use extensometer of the present utility model to measure, there is measuring method easy, function is many, feature that precision is high.
Measuring method of the present utility model, make the stressed measuring process of material very convenient, measuring accuracy is high, because existing electronic type extensometer counts sensor with the strain of strain limit 2%, the range of strain measured is little, and gauge length is fixed, the maximum detection amount range of strain of Regular contact electronic extensometer is 5%-100%, measurement range can be brought up to more than 500% by extensometer of the present utility model, and do not fix gauge length restriction, in process of the test, gauge length is variable arbitrarily in image range, there is no linear error, hysterisis error, cumulative errors, do not demarcate and do not affect strain measurement accuracy (strain=(L-L0)/L0 yet, because ccd image sensor pixel is evenly distributed, pixel distance and the actual range of mark are linear ratio relations), measure consistance, reproducible, laser intensity is much larger than ambient light intensity, basic elimination light disturbance, can measure under rugged environment, such as can by the sample in optical observation window measurement pyrometry stove or high-temperature cabinet, to common metal material can when sample need not be unloaded test elongation after fracture easily, reduction of area, well overcome the defect of prior art, have efficient, easy, flexibly, the feature of multifunctional testing accurately.
Claims (11)
1. an extensometer, is characterized in that described extensometer comprises:
Laser system, described laser system is for generation of the test sample on continuous laser exposure experiment board;
Imaging system, described imaging system is used for the image of collecting test sample;
Measuring system, described measuring system is used for test pattern collection control and picture signal process, draws measurement data, and data is exported;
Described measuring system is connected with laser system, imaging system.
2. extensometer as claimed in claim 1, is characterized in that
Described laser system, comprises the laser light-source device producing continuous laser;
Described imaging system, comprises imaging device and sensing device;
Described measuring system, comprises test pattern acquisition control device, image signal processing apparatus, data output device.
3. extensometer as claimed in claim 2, is characterized in that:
In described laser system, also comprise prism group, carry out shaping for the laser beam produced laser light-source device, expand;
In described imaging system, described imaging device comprises the imaging lens head group of multiple imaging lens composition, and described sensing device comprises ccd image sensing device;
In described measuring system, described test pattern acquisition control device comprises image pick-up card and memory storage, and described image signal processing apparatus comprises data processor and memory storage, and described data output device comprises data output interface;
The sensing device of described imaging system is connected with the test pattern acquisition control device of measuring system.
4. extensometer as claimed in claim 3, is characterized in that:
In described laser system, laser light-source device comprises the continuous laser source of power adjustable;
In described imaging system, imaging device also comprises camera lens polaroid, and described polaroid and described imaging lens are socketed, and sensing device is industrial digital CCD sensing device, described imaging system also comprises memory storage, for storing the duty parameters of sensing device;
The sensing device of described imaging system is connected by bidirectional data line with the test pattern acquisition control device of described measuring system,
Described test pattern acquisition control device receives the sample digitized image of sensing device transmission by bidirectional data line, and adjusts by the running parameter of this bidirectional data line to sensing device, to improve frame frequency and picture quality.
5. extensometer as claimed in claim 4, is characterized in that:
Described laser system also comprises regulating device, for the adjustment to LASER Light Source output power and laser beam;
Described imaging system also comprises regulating device, for the adjustment to imaging definition and dynamic image quality;
Described laser system is compact being disposed adjacent with described imaging system, makes the lens axis of the optical axis of LASER Light Source and imaging device basically identical.
6. the extensometer as described in one of claim 1-5, is characterized in that:
The LASER Light Source of described laser system is continuous laser source;
The imaging device of described imaging system is digital imaging devices.
7. the extensometer as described in one of claim 1-5, is characterized in that:
The data output interface of described measuring system is connected with test board through test board interface, test result data is exported to test board, for testing the closed-loop control of board to loading procedure.
8. the extensometer as described in one of claim 1-5, is characterized in that:
Described measuring system by test result data by data output device export, record, display.
9. the extensometer as described in one of claim 1-5, is characterized in that:
Described measuring system can be connected with computer platform.
10. the extensometer as described in one of claim 1-5, is characterized in that:
Described measuring system can be connected with memory storage, display device, printing equipment.
11. extensometers as claimed in claim 6, is characterized in that: described continuous laser source is Solid State Laser source, semiconductor laser light source, gas laser source or liquid laser source; Described digital imaging devices is Digital Video or digital camera devices.
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| CN201420060166.8U CN204202569U (en) | 2014-02-10 | 2014-02-10 | Extensometer |
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| CN201420060166.8U CN204202569U (en) | 2014-02-10 | 2014-02-10 | Extensometer |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103760025A (en) * | 2014-02-10 | 2014-04-30 | 深圳三思纵横科技股份有限公司 | Extensometer and measuring method thereof |
| CN106537087A (en) * | 2014-07-28 | 2017-03-22 | 伊利诺斯工具制品有限公司 | Real-time video extensometer |
| CN107576570A (en) * | 2017-09-27 | 2018-01-12 | 江苏法尔胜特钢制品有限公司 | The cupping machine of steel wire rope |
| CN109579720A (en) * | 2018-12-07 | 2019-04-05 | 广州大学 | A kind of extensometer dynamic measurement method of Edge Distance measurement |
| CN112683188A (en) * | 2020-12-01 | 2021-04-20 | 上海华龙测试仪器有限公司 | Full-automatic video extensometer |
| CN114518289A (en) * | 2022-01-25 | 2022-05-20 | 深圳三思纵横科技股份有限公司 | Control method for deformation strain control by video acquisition |
-
2014
- 2014-02-10 CN CN201420060166.8U patent/CN204202569U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103760025A (en) * | 2014-02-10 | 2014-04-30 | 深圳三思纵横科技股份有限公司 | Extensometer and measuring method thereof |
| CN106537087A (en) * | 2014-07-28 | 2017-03-22 | 伊利诺斯工具制品有限公司 | Real-time video extensometer |
| US10502669B2 (en) | 2014-07-28 | 2019-12-10 | Illinois Tool Works Inc. | Real-time video extensometer |
| US10782215B2 (en) | 2014-07-28 | 2020-09-22 | Illinois Tool Works Inc. | Real-time video extensometer |
| US11002648B2 (en) | 2014-07-28 | 2021-05-11 | Illinois Tool Works Inc. | Real-time video extensometer |
| CN107576570A (en) * | 2017-09-27 | 2018-01-12 | 江苏法尔胜特钢制品有限公司 | The cupping machine of steel wire rope |
| CN109579720A (en) * | 2018-12-07 | 2019-04-05 | 广州大学 | A kind of extensometer dynamic measurement method of Edge Distance measurement |
| CN112683188A (en) * | 2020-12-01 | 2021-04-20 | 上海华龙测试仪器有限公司 | Full-automatic video extensometer |
| CN112683188B (en) * | 2020-12-01 | 2023-12-29 | 上海华龙测试仪器有限公司 | Full-automatic video extensometer |
| CN114518289A (en) * | 2022-01-25 | 2022-05-20 | 深圳三思纵横科技股份有限公司 | Control method for deformation strain control by video acquisition |
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