CN206945573U - A kind of SR CT mechanical test systems - Google Patents
A kind of SR CT mechanical test systems Download PDFInfo
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- CN206945573U CN206945573U CN201720593374.8U CN201720593374U CN206945573U CN 206945573 U CN206945573 U CN 206945573U CN 201720593374 U CN201720593374 U CN 201720593374U CN 206945573 U CN206945573 U CN 206945573U
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- test systems
- backup pad
- support column
- mechanical test
- supporting plate
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Abstract
It the utility model is related to a kind of SR CT mechanical test systems, including light source, mechanical testing equipment and data reconstruction system, the mechanical testing equipment includes upper backup pad and lower supporting plate, chuck for clamp assay workpiece is between the upper backup pad and the lower supporting plate, and more support columns are provided between the upper backup pad and the lower supporting plate, the radical of the support column is more than 2, and the support column is evenly arranged on same circumference.The SR CT mechanical test systems provide possibility for equidistant sparse discrete sampling, coordinate sparse restructing algorithm to effectively improve image reconstruction speed using equidistant discrete sampling.
Description
Technical field
Mechanical test technical field is the utility model is related to, more particularly to a kind of SR-CT mechanical test systems.
Background technology
It is well known that the macro-mechanical property of material is determined by material itself microstructure
, and the microstructure of material often plays conclusive effect to its macro-mechanical property.The failure damage of material is from essence
On say, be as caused by the damage of microstructure, therefore it is to be understood that material failure failure mechanism is just needed in situ study material
The evolution of portion's microstructure.Although the research category of the mechanics of materials has evolved to microstructure at this stage, collection but more
In in theoretical research, and lack high-precision experimental research technology.Therefore development one kind is needed to be ground under the conditions of trickle
Study carefully the method and technology of material behavior.
SR-CT (Synchrotron Radiation-Computed Tomography synchrotron radiation computed tomography
Art), referred to as Synchrotron Radiation Computed Tomography technology, as a kind of new detection technique, it can be realized is carried out to material micromechanism
The observation of three-dimensional, lossless real-time online.
Light source, mechanical testing equipment and data reconstruction system, light are generally included in Synchrotron Radiation Computed Tomography mechanical test system
The effect in source is to send synchrotron radiation light, and synchrotron radiation light is radiated at the test piece of mechanical testing equipment, mechanical test
On the one hand device loads to experiment workpiece, on the other hand rotated, and to be projected in the range of 0 ° -180 °, throws
The data of movie queen are collected and deliver to data reconstruction system, and data reconstruction system rebuilds scan image according to operation rule.
Current mechanical testing equipment generally includes upper backup pad and lower supporting plate, right between upper backup pad and lower supporting plate
Title is provided with two support columns, in order to ensure its rigidity, inevitably increases the size of support column.For Synchrotron Radiation Computed Tomography
Experiment, it is currently to gather all projections under 0 ° of -180 ° of full angular, is then reconstructed again by filter back-projection reconstruction algorithm
Scan image, thicker support column in projection process to block angle larger so that the angle of acquired projections reduces, and this will cause
Scan image after reconstruction is second-rate, can not accurately observe the change of material microstructure.
Therefore, the scan image quality after rebuilding how is effectively improved, to accurately reflect material microstructure
Change is the technical problem of current those skilled in the art's urgent need to resolve.
Utility model content
The purpose of this utility model is to provide a kind of SR-CT mechanical test systems, so as to after effectively improving reconstruction
Scan image quality, accurately reflect the microstructure change of material.
To reach above-mentioned purpose, SR-CT mechanical test systems provided by the utility model, including light source, mechanical test
Device and data reconstruction system, the mechanical testing equipment includes upper backup pad and lower supporting plate, for clamp assay workpiece
Chuck between the upper backup pad and the lower supporting plate, and set between the upper backup pad and the lower supporting plate
There are more support columns, the radical of the support column is more than 2, and the support column is evenly arranged on same circumference.
Preferably, support column described in 4-8 roots is provided between the upper backup pad and the lower supporting plate.
Preferably, 6 support columns are provided between the upper backup pad and the lower supporting plate.
Preferably, force sensor is set on the lower supporting plate, and the force snesor is located at what the support column surrounded
Circle center, lower stage is provided with the force snesor；Loading device, the loading are provided with the upper backup pad
The output end of device is connected with upper stage, and the upper end of test piece is connected to the upper grip folder of the upper stage
Hold, lower end is connected to the lower chuck clamping of the lower stage.
Preferably, the loading device is micron actuator.
Preferably, the upper grip and the lower chuck be respectively provided with bare terminal end for clamping the test piece and with
What the bare terminal end was connected expands end, is provided with the upper stage and holds shape adaptation with expanding for the upper jaw
Top card holding trough, the bottom card holding trough for expanding end shape adaptation with the lower jaw is provided with the lower stage.
Preferably, it is characterised in that a diameter of 40mm for the circumference that the support column is surrounded.
Preferably, a diameter of 4mm of the support column.
As can be seen that in SR-CT mechanical test systems disclosed in the utility model, mechanical testing equipment is in upper support
The even number root support column more than 2 is provided between plate and lower supporting plate, it is real compared to the traditional mechanicses using two support columns
Experiment device, on the premise of the load quality for needing to support is constant, the single support column of dynamics experimental device in the utility model
Diameter can do smaller, this causes when being projected, and continuous caused by every support column blocks angle reduction, Er Qiejing
Measuring and calculating is crossed, in the range of 0 ° -180 °, always block angle of the angle also caused by than two support columns of always blocking of all support columns is wanted
Small, no more than 15 °, this make it that the angular range increase effectively projected can be obtained at the continuous angle of blocking caused by every support column,
Image reconstruction is carried out for follow-up number and provides more data for projection supports, and this can effectively improve the scan image matter after rebuilding
Amount；Additionally, due to the increase of effective projection angle range, data for projection increases, therefore is also provided for equidistant sparse discrete sampling
May, coordinate sparse restructing algorithm to effectively improve image reconstruction speed using equidistant discrete sampling.
Brief description of the drawings
Fig. 1 is the structural representation of the mechanical testing equipment disclosed in the utility model embodiment；
Fig. 2 is distribution of the support column of the dynamics experimental device disclosed in the utility model embodiment on lower supporting plate
Schematic diagram；
Fig. 3 is the cooperation schematic diagram of the chuck and objective table disclosed in the utility model embodiment；
Fig. 4 is the cooperation schematic diagram of the chuck and test piece disclosed in the utility model embodiment；
Fig. 5 is be in the light schematic diagram of the support column of dynamics experimental device in the utility model embodiment in the range of 180 degree.
Wherein, 1 is loading device, and 2 be upper backup pad, and 3 be objective table, and 4 be chuck, and 5 be support column, and 6 be force snesor,
7 be lower supporting plate, and 8 be test piece, and 9 be X ray, and 31 be upper stage, and 32 be lower stage, and 41 be upper grip, 42
For lower chuck.
Embodiment
Core of the present utility model is to provide a kind of SR-CT mechanical test systems, so as to after effectively improving reconstruction
Scan image quality, accurately reflect the microstructure change of material.
In order that those skilled in the art more fully understand the utility model, below in conjunction with the accompanying drawings and it is embodied
The utility model is described in further detail for mode.
SR-CT mechanical test systems disclosed in the utility model, including for launching the synchrotron radiation light of X-ray line
Source, for the mechanical testing equipment that is stretched or compressed to workpiece and for handling data for projection and rebuilding scan image
Data reconstruction system, in the mechanical test system, dynamics experimental device is improved, the mechanical testing equipment include it is upper
Supporting plate and lower supporting plate, the chuck for clamp assay workpiece between upper backup pad and lower supporting plate, upper backup pad and
More support columns are provided between lower supporting plate, the quantity of support column is more than 2, and support column is uniformly distributed in same circumference
On.
Because mechanical testing equipment is provided with the support column more than 2 between upper backup pad and lower supporting plate, compared to
Using the traditional mechanicses experimental provision of two support columns, on the premise of the load quality for needing to support is constant, the utility model
In the diameter of the single support column of dynamics experimental device can do smaller, this causes when being projected, every support column institute
Caused by continuously block angle reduction, and by measuring and calculating, in the range of 0 ° -180 °, the angle of always blocking of all support columns is also compared
Angle is small for always blocking caused by two support columns, and this make it that the angular range increase effectively projected can be obtained, and enters for follow-up number
Row image reconstruction provides more data for projection and supported, this can effectively improve the scan image quality after rebuilding；In addition by
In the increase of effective projection angle range, data for projection increases, therefore also provides possibility for equidistant sparse discrete sampling, adopts
Sparse restructing algorithm is coordinated to effectively improve image reconstruction speed with equidistant discrete sampling.
Under normal circumstances, the rotation platform load-bearing on Synchrotron Radiation Computed Tomography test platform must not exceed 2kg, this just strict limitation
The size and weight of loading device, in order to meet test accuracy, loading device need with rotation platform precision-fit, therefore
Support column is arranged in 40mm border circular areas, by actual measuring and calculating, when using 6 support columns, the size of support column
The rigidity requirement of support column can be met in a diameter of 4mm, now according to test article size it can be calculated that at 180 °
In the range of the continuous of each support column block angle at 13 ° or so, total angle of blocking is controlled at 40 ° or so, such as institute in Fig. 5
Show.Certainly, when the quantity of support column is 4,8 for two traditional support columns, it, which is contacted, blocks angle and total
Block angle and also have different degrees of reduction, but for 6, the continuous angle of blocking of 4 support columns is larger, 8 branch
Dagger always blocks that angle is larger, therefore in the SR-CT mechanical testing equipments in the utility model, the quantity of support column uses 6
It is advisable.
It please also refer to Fig. 1 to Fig. 4, in the mechanical test system disclosed in the utility model embodiment, mechanical test
Force sensor is set on the lower supporting plate of device, to measure the size of pulling force or pressure, is mainly used in surveying in the present embodiment
Pulling force is measured, force snesor is located at the circle center that support column surrounds, to ensure the accuracy of measurement result, set on force snesor
There is lower stage, loading device is provided with upper backup pad, the output end of loading device is connected with upper stage, tests work
The upper end of part is connected to the upper grip clamping of upper stage, and lower end is connected to the lower chuck clamping of lower stage, is
The accuracy of guarantee test result, the loading device in the present embodiment are micron actuator, and so-called micron actuator refers to pair
The location means that workpiece applies micron displacement magnitude are tested, its displacement resolution is 0.1 μm.
The top and bottom of upper grip and lower chuck difference clamp assay workpiece, skilled artisans appreciate that
It is that upper grip and the connected mode of lower chuck and objective table include a variety of, such as clamping, threaded connection etc., in the present embodiment,
Upper grip and lower chuck are respectively provided with for the bare terminal end of clamp assay workpiece and what is be connected with bare terminal end expands end, top loading
The top card holding trough for expanding end shape adaptation with upper jaw is provided with platform, is provided with lower stage and lower jaw
Expand end shape adaptation bottom card holding trough, as shown in Figure 3, by the cooperation of card holding trough and bulb realize chuck with carry
The connection of thing platform.
SR-CT mechanical test systems provided by the utility model are described in detail above.It is used herein
Specific case is set forth to principle of the present utility model and embodiment, and the explanation of above example is only intended to help and managed
Solve method and its core concept of the present utility model.It should be pointed out that for those skilled in the art, not
On the premise of departing from the utility model principle, some improvement and modification can also be carried out to the utility model, these improve and repaiied
Decorations are also fallen into the protection domain of the utility model claims.
Claims (8)
1. a kind of SR-CT mechanical test systems, including light source, mechanical testing equipment and data reconstruction system, it is characterised in that
The mechanical testing equipment includes upper backup pad and lower supporting plate, and the chuck for clamp assay workpiece is located at the upper backup pad
More support columns, the support are provided between the lower supporting plate, and between the upper backup pad and the lower supporting plate
The radical of post is more than 2, and the support column is evenly arranged on same circumference.
2. SR-CT mechanical test systems according to claim 1, it is characterised in that the upper backup pad and the lower branch
Support column described in 4-8 roots is provided between fagging.
3. SR-CT mechanical test systems according to claim 2, it is characterised in that the upper backup pad and the lower branch
6 support columns are provided between fagging.
4. SR-CT mechanical test systems according to claim 1, it is characterised in that set on the lower supporting plate strong
Sensor, the force snesor are located at the circle center that the support column surrounds, bottom loading are provided with the force snesor
Platform；Loading device is provided with the upper backup pad, the output end of the loading device is connected with upper stage, test piece
Upper end be connected to the upper stage upper grip clamping, lower end be connected to the lower stage lower chuck folder
Hold.
5. SR-CT mechanical test systems according to claim 4, it is characterised in that the loading device actuates for micron
Device.
6. SR-CT mechanical test systems according to claim 4, it is characterised in that the upper grip and the lower folder
Head is respectively provided with the bare terminal end for clamping the test piece and what is be connected with the bare terminal end expand end, the upper stage
On be provided with the top card holding trough for expanding end shape adaptation with the upper jaw, be provided with the lower stage and institute
State the bottom card holding trough for expanding end shape adaptation of lower jaw.
7. according to the SR-CT mechanical test systems described in claim 1-6 any one, it is characterised in that the support column institute
A diameter of 40mm of the circumference surrounded.
8. SR-CT mechanical test systems according to claim 7, it is characterised in that a diameter of 4mm of the support column.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720593374.8U CN206945573U (en) | 2017-05-25 | 2017-05-25 | A kind of SR CT mechanical test systems |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720593374.8U CN206945573U (en) | 2017-05-25 | 2017-05-25 | A kind of SR CT mechanical test systems |
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| CN206945573U true CN206945573U (en) | 2018-01-30 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107014841A (en) * | 2017-05-25 | 2017-08-04 | 中国科学技术大学 | A kind of SR CT mechanical test systems and SR CT mechanical test methods |
| CN110907479A (en) * | 2018-09-14 | 2020-03-24 | 株式会社岛津技术研究 | Material testing machine and radiation CT apparatus |
-
2017
- 2017-05-25 CN CN201720593374.8U patent/CN206945573U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107014841A (en) * | 2017-05-25 | 2017-08-04 | 中国科学技术大学 | A kind of SR CT mechanical test systems and SR CT mechanical test methods |
| CN110907479A (en) * | 2018-09-14 | 2020-03-24 | 株式会社岛津技术研究 | Material testing machine and radiation CT apparatus |
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