CN108195671A - A kind of pulling pressing device in situ based on computed tomography - Google Patents
A kind of pulling pressing device in situ based on computed tomography Download PDFInfo
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- CN108195671A CN108195671A CN201711303827.XA CN201711303827A CN108195671A CN 108195671 A CN108195671 A CN 108195671A CN 201711303827 A CN201711303827 A CN 201711303827A CN 108195671 A CN108195671 A CN 108195671A
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- module
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- lead
- compression load
- out wire
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
- G01N23/04—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material
- G01N23/046—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material using tomography, e.g. computed tomography [CT]
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0073—Fatigue
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- Chemical & Material Sciences (AREA)
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- Life Sciences & Earth Sciences (AREA)
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Pulmonology (AREA)
- Radiology & Medical Imaging (AREA)
- Theoretical Computer Science (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
Abstract
The present invention provides a kind of pulling pressing device in situ based on computed tomography, including：Tension and compression load-on module, experiment cavity module, control module, lead-out wire fixed module and pedestal；Wherein, the tension and compression load-on module, the experiment cavity module, the control module are mounted on the pedestal, and for floor installation on rotatable CT sample stages, the lead-out wire fixed module is mounted on the non-rotatable part of CT sample stages；The experiment cavity module, for containing sample material；The tension and compression load-on module, for providing power and rotational concentricity for carrying out tension and compression loading to the sample material contained in the experiment cavity module, and measurement experiment data；The control module for sending operational order to the tension and compression load-on module, and receives the experimental data that the tension and compression load-on module measures, the experimental data is handled.Using the device, the evolution process of sample material internal structure in the loaded state can be obtained.
Description
Technical field
The present invention relates to scientific instrument technical field more particularly to a kind of tension and compression in situ dresses based on computed tomography
It puts.
Background technology
With the progress of science and technology, the differentiation of research material internal microstructure and the Relationship between Mechanical of material are to green wood
The development of material is most important, and therefore, the differentiation for how obtaining material its internal microstructure under external force is of great significance.
In the prior art, the interaction principle that computed tomography can be based on ray and substance, passes through throwing
Shadow method for reconstructing obtains the three-dimensional image of testee, and based on this, computed tomography is widely applied to
The testing field of a variety of materials, wherein, the pulling pressing device in situ based on computed tomography can obtain the true of material internal
Real deformation, disclose material deform under external force, damage and damage process in internal structure evolution process.
However, the pulling pressing device in situ based on computed tomography is deficienter in the prior art, and produces CT and set
Standby producer is different, and the CT equipment model produced is also different, and there is no mating having is targetedly former for different producers
Position pulling pressing device.
Invention content
In view of this, the embodiment of the present invention provides a kind of pulling pressing device in situ based on computed tomography, to obtain
The evolution process of sample material internal structure in the loaded state.
The embodiment of the present invention provides a kind of pulling pressing device in situ based on computed tomography, including：Tension and compression load mould
Block, experiment cavity module, control module, lead-out wire fixed module and pedestal；
Wherein, the tension and compression load-on module, the experiment cavity module, the control module are mounted on the pedestal
On, the lead-out wire fixed module is mounted on the non-rotatable part of CT sample stages；
The experiment cavity module, for containing sample material；
The tension and compression load-on module, for provide for the sample material that contains in the experiment cavity module into
The power and rotational concentricity of row tension and compression loading, and measurement experiment data；
The control module for sending operational order to the tension and compression load-on module, and receives the tension and compression loading mould
The experimental data that block measures handles the experimental data.
Optionally, the tension and compression load-on module includes Power Component, measurement assembly；
Wherein, the Power Component includes planetary reducer, servo motor and ball-screw；
The measurement assembly includes grating scale and pressure sensor.
Optionally, the experiment cavity module includes：Upper cover, connector, upper end-fixture, loading chambers and lower end folder
Tool；
Wherein, the upper end-fixture is fixed on the cover, and the lower end fixture is fixed on the pressure sensor,
The upper end-fixture is used to clamp the sample material with the lower end fixture.
Optionally, the loading chambers use carbon fibre material；
The connector uses stainless steel material.
Optionally, there is the bonding slot of set depth in the middle part of the connector；
The loading chambers are adhered to by bonding way in the bonding slot.
Optionally, the lead-out wire fixed module includes：Lead-out wire, lead-out wire pallet, guide rail, tank chain wire casing, guide rail
Sliding block, spring；
Wherein, the guide rail is located on the right side of the lead-out wire pallet, and the guide rail slide block is located on the guide rail；
Described lead-out wire one end is connected to the tension and compression load-on module bottom end；
For the tank chain wire casing for fixing the lead-out wire, exit connects the guide rail slide block；
One end of the spring connects the guide rail slide block, and the other end is fixed at the port of the lead-out wire.
Optionally, the pedestal is fixed on by set screw and positioning pin on CT sample stages.
As seen from the above-described embodiment, the pulling pressing device packet in situ provided in an embodiment of the present invention based on computed tomography
It includes：Tension and compression load-on module, experiment cavity module, control module, lead-out wire fixed module and pedestal.Wherein, the tension and compression add
It carries module, the experiment cavity module, the control module to be mounted on the pedestal, the lead-out wire fixed module passes through
Setscrew is mounted on the non-rotatable part of CT sample stages；The experiment cavity module, for containing sample material；The drawing
Load-on module is pressed, for providing to carry out the dynamic of loading tension and compression to the sample material contained in the experiment cavity module
Power and rotational concentricity, and measurement experiment data；The control module refers to for sending operation to the tension and compression load-on module
It enables, and receives the experimental data that the tension and compression load-on module measures, the experimental data is handled.By the device,
The evolution process of sample material internal structure in the loaded state can be obtained, which is research material in external force loading effect
Under internal structure Real-time process effective experimental tool.
Description of the drawings
Fig. 1 is a kind of structural representation of the pulling pressing device in situ based on computed tomography provided in an embodiment of the present invention
Figure；
Fig. 2 is the attachment structure schematic diagram between the connector and loading chambers of the embodiment of the present invention；
Fig. 3 is the structure diagram of the lead-out wire fixed module of the embodiment of the present invention.
Specific embodiment
Purpose, technical scheme and advantage to make the embodiment of the present invention are clearer, below in conjunction with the embodiment of the present invention
In drawings and examples, the technical solution in the embodiment of the present invention is explicitly described.
Fig. 1 is referred to, is a kind of pulling pressing device in situ based on computed tomography provided in an embodiment of the present invention
Structure diagram.
The pulling pressing device in situ based on computed tomography of example as shown in Figure 1, including tension and compression load-on module 11, experiment
Cavity module 12, control module 13, lead-out wire fixed module 14 and pedestal 15；
Wherein, the tension and compression load-on module 11, the experiment cavity module 12, the control module 13 are mounted on described
On pedestal 15, the lead-out wire fixed module 14 is mounted on the non-rotatable part of CT system sample stage by setscrew.
Specifically, in embodiments of the present invention, the experiment cavity module 12 can be used for containing sample material.
In one embodiment, the experiment cavity module 12 includes：Upper cover 121, upper end-fixture 123, adds connector 122
Carry cavity 124 and lower end fixture 125.The upper end-fixture 123 is fixed in the upper cover 121, the lower end fixture 125
It is fixed on the pressure sensor 115 in tension and compression load-on module 11, the upper end-fixture 123 and the lower end fixture 125
For clamping the sample material contained in the experiment cavity module 12.
In one embodiment, loading chambers are done using the larger material of density, influence is irradiated to X-ray intensity on test specimen,
It will reduce so as to the size of test sample, when being more than certain numerical value additionally, due to the output power for emitting X ray when CT equipment,
Blooming effect will occur in X ray, this resolution ratio that will just influence imaging, based on this, the loading chambers 124 in the embodiment of the present invention
Carbon fibre material can be used, unnecessary attenuation occur to avoid X ray.
In one embodiment, stainless steel material can be used in above-mentioned connector 122.
In one embodiment, the connection structure between above-mentioned connector 122 and loading chambers 124 can be as shown in Figure 2.
In Fig. 2,122 middle part of connector is equipped with set depth, such as the bonding slot 1221 of 5mm, by the connection on loading chambers 124
End is coated with colloid, is inserted into above-mentioned bonding slot 1221.Handled by this kind, can increase connector 122 and loading chambers 124 it
Between contact area, increase the tensile and compressive strength of abutting edge.
In embodiments of the present invention, loading chambers 124 are being adhered to gluing on the connector 122 by bonding way
After in access slot 1221, can also be stretched, compress and fatigue test test, wherein, the pulling force of extension test can be set
For 2T, the pressure of compression verification can also be set as 2T, and the number of fatigue test test is not less than 100000 times.
In embodiments of the present invention, tension and compression load-on module 11 may be used to provide for in the experiment cavity module 12
The sample material contained carries out the power and rotational concentricity of tension and compression loading, and measurement experiment data, such as power, displacement etc.
Data.
In one embodiment, the tension and compression load-on module 11 can include Power Component, measurement assembly；Wherein, it is described dynamic
Power component can include planetary reducer 111, servo motor 112 and ball-screw 113；The measurement assembly can include
Grating scale 114 and pressure sensor 115.
In embodiments of the present invention, the control module 13 can be used for sending operation to the tension and compression load-on module 11
Instruction, and the experimental data that the tension and compression load-on module 11 measures is received, the experimental data is handled.
In one embodiment, shielding line may be used in the data line in the control module 13, realizes to experiment process
Loading keeps the functions such as load, pause experiment.
In embodiments of the present invention, it is contemplated that tension and compression load-on module 11 needs to carry out 360 degree rotation on CT sample stages,
In rotary course, wound in order to prevent for connecting the lead-out wire between tension and compression load-on module 11 and CT sample stages, the extraction
The structure of example as shown in Figure 3 may be used in line fixed module 14.
The lead-out wire fixed module 14 of example as shown in Figure 3 can include：Lead-out wire 141, lead-out wire pallet 142, guide rail
143rd, tank chain wire casing 144, guide rail slide block 145 and spring 146.
Specifically, the guide rail 143 is located at 142 right side of lead-out wire pallet, the guide rail slide block 145 is located at described lead
On rail 143；Described 141 one end of lead-out wire is connected to 11 bottom end of tension and compression load-on module；The tank chain wire casing 144 is for solid
The fixed lead-out wire 141, exit connect the guide rail slide block 145；One end of the spring 146 connects the guide rail slide block
145, the other end is fixed at the port of the lead-out wire 141.
In embodiments of the present invention, the pedestal 15 can be fixed on by set screw and positioning pin on CT sample stages, and
Ensure that loading center and sample stage rotation center are coaxial.
As seen from the above-described embodiment, the pulling pressing device packet in situ provided in an embodiment of the present invention based on computed tomography
It includes：Tension and compression load-on module, experiment cavity module, control module, lead-out wire fixed module and pedestal；Wherein, the tension and compression add
It carries module, the experiment cavity module, the control module to be mounted on the pedestal, the lead-out wire fixed module passes through
Setscrew is mounted on the non-rotatable part of CT sample stages；The experiment cavity module, for containing sample material；The tension and compression
Load-on module, for providing the power for carrying out loading tension and compression to the sample material contained in the experiment cavity module
And rotational concentricity, and measurement experiment data；The control module, for sending operational order to the tension and compression load-on module,
And the experimental data that the tension and compression load-on module measures is received, the experimental data is handled.It, can be with by the device
The evolution process of sample material internal structure in the loaded state is obtained, which is research material under external force loading effect
The effective experimental tool of internal structure Real-time process.
So far, although those skilled in the art will appreciate that detailed herein have shown and described multiple showing for the present invention
Example property embodiment, still, without departing from the spirit and scope of the present invention, still can according to the present disclosure directly
Determine or derive many other variations or modifications consistent with the principles of the invention.Therefore, the scope of the present invention is understood that and recognizes
It is set to and covers other all these variations or modifications.
Claims (7)
1. a kind of pulling pressing device in situ based on computed tomography, which is characterized in that including：Tension and compression load-on module, experiment
Cavity module, control module, lead-out wire fixed module and pedestal；
Wherein, the tension and compression load-on module, the experiment cavity module, the control module are mounted on the pedestal, institute
State the non-rotatable part that lead-out wire fixed module is mounted on CT sample stages；
The experiment cavity module, for containing sample material；
The tension and compression load-on module, for providing to draw the sample material contained in the experiment cavity module
Press the power and rotational concentricity of loading, and measurement experiment data；
The control module for sending operational order to the tension and compression load-on module, and receives the tension and compression load-on module and surveys
The experimental data measured handles the experimental data.
2. the apparatus according to claim 1, which is characterized in that the tension and compression load-on module includes Power Component, measurement group
Part；
Wherein, the Power Component includes planetary reducer, servo motor and ball-screw；
The measurement assembly includes grating scale and pressure sensor.
3. the apparatus of claim 2, which is characterized in that the experiment cavity module includes：Upper cover, connector, on
Hold fixture, loading chambers and lower end fixture；
Wherein, the upper end-fixture is fixed on the cover, and the lower end fixture is fixed on the pressure sensor, described
Upper end-fixture is used to clamp the sample material with the lower end fixture.
4. device according to claim 3, which is characterized in that the loading chambers use carbon fibre material；
The connector uses stainless steel material.
5. device according to claim 3, which is characterized in that there is the bonding slot of set depth in the middle part of the connector；
The loading chambers are adhered to by bonding way in the bonding slot.
6. the apparatus according to claim 1, which is characterized in that the lead-out wire fixed module includes：Lead-out wire, lead-out wire
Pallet, guide rail, tank chain wire casing, guide rail slide block, spring；
Wherein, the guide rail is located on the right side of the lead-out wire pallet, and the guide rail slide block is located on the guide rail；
Described lead-out wire one end is connected to the tension and compression load-on module bottom end；
For the tank chain wire casing for fixing the lead-out wire, exit connects the guide rail slide block；
One end of the spring connects the guide rail slide block, and the other end is fixed at the port of the lead-out wire.
7. the apparatus according to claim 1, which is characterized in that the pedestal is fixed on CT by set screw and positioning pin
On sample stage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711303827.XA CN108195671B (en) | 2017-12-11 | 2017-12-11 | In-situ tension and compression device based on computed tomography |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711303827.XA CN108195671B (en) | 2017-12-11 | 2017-12-11 | In-situ tension and compression device based on computed tomography |
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| Publication Number | Publication Date |
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| CN108195671A true CN108195671A (en) | 2018-06-22 |
| CN108195671B CN108195671B (en) | 2020-08-18 |
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| CN201711303827.XA Active CN108195671B (en) | 2017-12-11 | 2017-12-11 | In-situ tension and compression device based on computed tomography |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110220788A (en) * | 2019-07-08 | 2019-09-10 | 中国工程物理研究院化工材料研究所 | A kind of micron mechanical loading unit in situ suitable for X-ray CT system |
| CN111077014A (en) * | 2020-03-11 | 2020-04-28 | 南京航空航天大学 | Micro-CT in-situ loading device and testing method for microscopic damage of ceramic matrix composite |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110220788A (en) * | 2019-07-08 | 2019-09-10 | 中国工程物理研究院化工材料研究所 | A kind of micron mechanical loading unit in situ suitable for X-ray CT system |
| CN111077014A (en) * | 2020-03-11 | 2020-04-28 | 南京航空航天大学 | Micro-CT in-situ loading device and testing method for microscopic damage of ceramic matrix composite |
| CN111077014B (en) * | 2020-03-11 | 2021-02-19 | 南京航空航天大学 | Micro-CT in-situ loading device and testing method for microscopic damage of ceramic matrix composite |
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| CN108195671B (en) | 2020-08-18 |
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