CN110031293A - A kind of compression test device and method - Google Patents
A kind of compression test device and method Download PDFInfo
- Publication number
- CN110031293A CN110031293A CN201910180132.XA CN201910180132A CN110031293A CN 110031293 A CN110031293 A CN 110031293A CN 201910180132 A CN201910180132 A CN 201910180132A CN 110031293 A CN110031293 A CN 110031293A
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- Prior art keywords
- pressure
- pressing plate
- displacement
- fixing bolt
- group
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Classifications
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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
-
- 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
- G01N2203/0075—Strain-stress relations or elastic constants
Abstract
The invention discloses a kind of compression test devices, it include: the displacement limiting unit of the pressure distortion rate for applying stressed pressure unit to measurement sample group, for limiting measurement sample group, wherein, the measurement sample group is stacked by multiple identical individual samples and is formed；The displacement limiting unit is fixed on the pressure unit.The advantages of compression test device is: structure is simple, it is easy to operate, there is no additional circuit and operation display function in device, even if in severe experimental enviroment, also it can guarantee the reliability of experimental rig, the process of test will not be impacted, while because of apparatus structure preparation simply easy to process, save the cost of test.
Description
Technical field
The present invention relates to a kind of experimental rigs, particularly relate to a kind of compression test device and method.
Background technique
Currently, some products, material or component are on active service in the state of by pressure, can be made by the state of pressure for a long time
Product, material or component generate biggish permanent compression set or stress relaxation, it is made to be difficult to meet self performance index or ruler
Very little requirement influences itself service life.
In performance indicators such as permanent compression set amount and the stress relaxation curves for measuring product, material or component, some
The reduction ratio of material especially carbon fibre composite actual condition is very small, carries out compression test using existing specimen size,
In the presence of the problem for being difficult to control accurately by drafts, and causing error of test data larger.And if increasing the size of sample,
It will increase the preparation difficulty of sample through-thickness, while increasing the cost of sample processing.
Summary of the invention
In view of this, apparatus structure is simple it is an object of the invention to propose a kind of compression test device and method, it is easy
Operation, and to efficiently solve the problems, such as that sample pressure distortion amount is difficult to control accurately larger with error of test data for the method.
Based on above-mentioned purpose, the present invention provides a kind of compression test devices, comprising: for applying pressure to measurement sample group
The pressure unit of power applies stressed displacement limiting unit in the measurement sample group for limiting the pressure unit,
The displacement limiting unit is arranged on the pressure unit；Wherein, the measurement sample group is by multiple identical individual samples
Stack composition.
Optionally, the pressure unit includes: fixation clip, mobile pressing plate, fixing bolt group and fixing bolt group pair
The pressure nut group answered, the displacement limiting unit include at least four displacement limiters；Wherein, the fixation clip is located at solid
Determine the top of each fixing bolt of bolt group；The mobile pressing plate is located at the end of each fixing bolt of fixing bolt group；
The fixing bolt group includes at least four fixing bolts；The pressure nut group include it is corresponding with the fixing bolt extremely
Few four pressure nuts；The centre of the fixing bolt is equipped with the displacement limiter；The measurement sample group is placed in the shifting
Between dynamic pressure plate and fixation clip；As the pressure nut is tightened, the mobile pressing plate is mobile towards the fixation clip.
Optionally, the measurement sample group is stacked together by three to six identical individual samples；The individual sample
Between separated with sandwich.
Optionally, the displacement limiting unit includes at least two displacement limiters, and the displacement limiter is installed respectively
In on the fixing bolt of the different fixing bolt groups.
Optionally, the mobile pressing plate and the fixation clip are arranged in a manner of laterally or longitudinally.
Optionally, the thickness of the mobile pressing plate and fixation clip is greater than 10mm；The mobile pressing plate and fixation clip
Surface roughness is not more than 0.4 μm.
Optionally, anticorrosion and anti-oxidation processing are passed through in the fixing bolt and the pressure nut surface.
Optionally, the material of the displacement limiter includes stainless steel and titanium alloy.
Optionally, the sandwich includes aluminium foil and filter paper, and the sandwich and the individual sample do not generate chemical anti-
It answers.
On the other hand, the present invention also provides a kind of compression test methods of compression test device, comprising:
Multiple identical individual samples are stacked into measurement sample group, the fixation clip and movement for being placed in pressure unit are pressed
Between plate；
Apply uniform pressure to the measurement sample group, reaches the pressure for detecting the measurement sample group after a certain period of time
Power deformation rate；
By the pressure distortion rate of displacement limiting unit judgement measurement sample group, when mobile pressing plate and it is displaced limiting unit
After each displacement limiter completely attaches to, determines that measurement sample group has reached defined pressure distortion rate, stop applying pressure；
If the pressure distortion rate reaches preset threshold, stopping continues to pressure；
The pressure distortion amount and pressure distortion rate of individual sample is calculated.
It is optionally, described to apply uniform pressure to the measurement sample group, comprising:
Each pressure nut corresponding with fixing bolt is tightened, keeps mobile pressing plate mobile towards fixation clip；
When the displacement that the nut that presses generates mobile pressing plate in each point is equal, determine that the measurement sample group is applied
Uniform pressure is added.
Optionally, method further include:
According to the size and pressure parameter of individual sample, the specific installation site of the displacement limiter is distributed.
Optionally, the number that stacks of the individual sample is three to six；Separated between the individual sample with sandwich.
Optionally, the displacement limiting unit includes at least two displacement limiters, and the displacement limiter is installed respectively
In on the fixing bolt of the different fixing bolt groups.
It is optionally, described that apply stressed direction include horizontal and vertical.
Optionally, the curvature of mobile pressing plate and fixation clip described in entire test is no more than 0.01mm；The shifting
The thickness of dynamic pressure plate and fixation clip is greater than 10mm；The surface roughness of the mobile pressing plate and fixation clip is not more than 0.4 μm.
Optionally, the sandwich includes aluminium foil and filter paper, and the sandwich and the individual sample do not generate chemical anti-
It answers.
From the above it can be seen that a kind of compression test device and method provided by the invention, the advantage is that: this is filled
It sets and is suitable for small deformation amount sample, apparatus structure is simple, and it is easy to operate, there is no additional circuit and operation to show function in device
Can, even if also can guarantee the reliability of experimental rig in severe experimental enviroment, the process of test will not be impacted,
Simultaneously because of apparatus structure preparation simply easy to process, the cost of test is saved；Compression test method is in unobvious increase sample
In the case where size, by the way that multiple samples are connected into a measurement sample group, and pressure examination is carried out to entire measurement sample group
It tests, the pressure distortion amount and pressure distortion rate of individual sample is finally calculated, it is ensured that the pressure distortion rate of individual sample obtains
It is accurately controlled, the possibility of data generation error during test is reduced, because not having to prepare the sample for increasing and measuring size again
It is tested, reduces the difficulty of sample preparation, save the cost of test.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Structural schematic diagram when Fig. 1 is a kind of compression test device lateral setting of the invention；
Structure top view when Fig. 2 is a kind of compression test device lateral setting of the invention；
Fig. 3 is structural schematic diagram when a kind of compression test device of the present invention is longitudinally disposed；
Fig. 4 is a kind of compression test embodiment of the method flow chart of the present invention.
In figure, 1 pressure unit, 2 displacement limiting units, 3 individual samples, 4 fixation clips, 5 mobile pressing plates, 6 fixing bolts
Group, 7 pressure nut groups.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with specific embodiment, and reference
Attached drawing, the present invention is described in more detail.
Below in conjunction with attached drawing, invention is further explained, as one embodiment, as shown in Figure 1, for the present invention
Structural schematic diagram when a kind of compression test device lateral setting provided, specifically includes: for applying pressure to measurement sample group
The pressure unit 1 of power applies stressed displacement limiting unit in the measurement sample group for limiting the pressure unit
2, the displacement limiting unit 2 is arranged on the pressure unit 1；Wherein, the measurement sample group is by multiple identical single
Sample 3 stacks composition.
The pressure unit 1 includes: that fixation clip 4, mobile pressing plate 5, fixing bolt group 6 and fixing bolt group are corresponding
Pressure nut group 7, the displacement limiting unit 2 include four displacement limiters；Wherein the fixation clip 4 is located at fixed spiral shell
The top of bolt group 6；The mobile pressing plate 5 is located at the end of fixing bolt group 6, and fixation clip 4 and mobile pressing plate 5 are by four fixations
It is bolted, as shown in Figure 2；The pressure nut group 7 includes four pressures nut corresponding with the fixing bolt；In order to
Sample pressure distortion rate is accurately controlled, upper displacement limiter is covered on fixing bolt, so that the pressure distortion rate of sample and single
Sample virtual condition is almost the same；The measurement sample group is placed between the mobile pressing plate 5 and fixation clip 4；With described
Pressure nut is tightened, and pressure nut drives mobile pressing plate mobile towards fixation clip, applies mobile pressing plate to measurement sample group
Plus-pressure.
Another effect of displacement limiter are as follows: the case where keeping specified pressure distortion rate for a long time, sample all can be because
Creep generates permanent compression set or stress relaxation phenomenon, if at this time without displacement limiter, mobile pressing plate can be because certainly
Body gravity and additional pressure or compression are generated to sample, this may not be inconsistent with actual stress.
Optionally, it is contemplated that the uniformity of pressure distortion, the concatenated quantity of sample are not easy too much, the measurement sample group by
Five identical individual samples are stacked together.After preventing from being pressurized for a long time, sample can be adhered to each other, between sample and sample
It is separated using very thin sandwich, the sandwich includes aluminium foil and filter paper, and the sandwich and the individual sample are not
Generate chemical reaction.
Optionally, the thickness of the mobile pressing plate and fixation clip is greater than 10mm, the thickness of mobile pressing plate and fixation clip
It can be increased according to the stress size of sample, be guaranteed after installing sample and applying load, two pressure plates curvature is no more than
0.01mm。
Optionally, the surface roughness of the mobile pressing plate and fixation clip is not more than 0.4 μm.
Optionally, anticorrosion and anti-oxidation processing are passed through in the fixing bolt and the pressure nut surface, to extend pressure
Contracting tooling prevents oxide or erosion dirty thermal aging test, damp heat test etc. be oxidizable or use scope of corrosive environment
Dye compression specimen surface.
Optionally, the material of the displacement limiter includes stainless steel and titanium alloy, guarantees that the material selected is disliked for a long time
Do not allow to be also easy to produce rust under bad environment (such as high temperature and humidity) experimental condition and pollutes sample.
From the above it can be seen that a kind of compression test device provided by the invention, remarkable advantage are: this device
Suitable for small deformation amount sample, apparatus structure is simple, easy to operate, does not have additional circuit and operation display function in device,
Even if also can guarantee the reliability of experimental rig in severe experimental enviroment, the process of test will not be impacted, simultaneously
Because of apparatus structure preparation simply easy to process, the cost of test is saved.
As second embodiment, the displacement limiting unit includes two displacement limiters, the displacement limiter point
It is not installed on the fixing bolt of the different fixing bolt groups.
As third embodiment, as shown in figure 3, being when a kind of compression test device provided by the invention is longitudinally disposed
Structural schematic diagram, in addition to the Impact direction of measurement sample has become lateral stressed, other features are identical with the first embodiment.
As another embodiment, as shown in figure 4, being specifically included for a kind of test method embodiment flow chart of the present invention:
Step 101, multiple identical individual samples are stacked into measurement sample group, is placed in the fixation clip of pressure unit
Between mobile pressing plate；
Step 102, apply uniform pressure to the measurement sample group, reach after a certain period of time, detect the measurement examination
The pressure distortion rate of sample group；
Step 103, by the pressure distortion rate of displacement limiting unit judgement measurement sample group, when mobile pressing plate and displacement limit
After each displacement limiter of unit processed completely attaches to, determines that measurement sample group has reached defined pressure distortion rate, stop
Apply pressure；Another effect of displacement limiter are as follows: the case where keeping specified pressure distortion rate for a long time, sample all can be because
Creep generates permanent compression set or stress relaxation phenomenon, if at this time without displacement limiter, mobile pressing plate can be because certainly
Body gravity and additional pressure or compression are generated to sample, this may not be inconsistent with actual stress.
Step 104, if the pressure distortion rate reaches preset threshold, stopping continues to pressure；Using displacement in test
Limiter by the control of the pressure distortion rate of various sample in a certain range, it is ensured that the deflection of sample be no more than threshold value and
In the case where long-term holding rated pressure deformation rate.
Step 105, the pressure distortion amount and pressure distortion rate of individual sample is calculated.
It is optionally, described to apply uniform pressure to the measurement sample group, comprising:
Each pressure nut corresponding with fixing bolt is tightened, keeps mobile pressing plate mobile towards fixation clip；
When the displacement that the nut that presses generates mobile pressing plate in each point is equal, determine that the measurement sample group is applied
Uniform pressure is added.
Optionally, the method further include:
According to the size and pressure parameter of individual sample, the specific installation site of the displacement limiter is distributed.
Optionally, the number that stacks of the individual sample is three to six, it is contemplated that the uniformity of pressure distortion, sample series connection
Quantity be not easy too much；After preventing from being pressurized for a long time, sample can be adhered to each other, and very thin interlayer is used between sample and sample
Object is separated, and the sandwich includes aluminium foil and filter paper, and the sandwich and the individual sample do not generate chemical reaction.
It is optionally, described that apply stressed direction include horizontal and vertical.
Optionally, the curvature of mobile pressing plate and fixation clip described in entire test is no more than 0.01mm；The shifting
The thickness of dynamic pressure plate and fixation clip is greater than 10mm；The surface roughness of the mobile pressing plate and fixation clip is not more than 0.4 μm.
As another embodiment, the displacement limiting unit includes at least two displacement limiters, the displacement limiter
It is respectively arranged on the fixing bolt of the different fixing bolt groups.
From the above it can be seen that a kind of compression test method provided by the invention, remarkable advantage are: compression examination
Proved recipe method is in the case where unobvious increase specimen size, by the way that multiple samples are connected into a measurement sample group, and to whole
A measurement sample group carries out pressure testing, and the pressure distortion amount and pressure distortion rate of individual sample is finally calculated, it is ensured that single
The pressure distortion rate of a sample is precisely controlled, the possibility of data generation error during test is reduced, because not having to again
The sample that increase measures size is prepared to be tested, the difficulty of sample preparation is reduced, saves the cost of test.
The device of above-described embodiment for realizing method corresponding in previous embodiment there is corresponding method to implement
The beneficial effect of example, details are not described herein.
It should be understood by those ordinary skilled in the art that: the discussion of any of the above embodiment is exemplary only, not
It is intended to imply that the scope of the present disclosure (including claim) is limited to these examples；Under thinking of the invention, above embodiments
Or can also be combined between the technical characteristic in different embodiments, step can be realized with random order, and be existed such as
Many other variations of the upper different aspect of the invention, for simplicity, they are not provided in details.
In addition, to simplify explanation and discussing, and in order not to obscure the invention, it can in provided attached drawing
It is connect with showing or can not show with the well known power ground of integrated circuit (IC) chip and other components.Furthermore, it is possible to
Device is shown in block diagram form, to avoid obscuring the invention, and this has also contemplated following facts, i.e., about this
The details of the embodiment of a little block diagram arrangements be height depend on will implementing platform of the invention (that is, these details should
It is completely within the scope of the understanding of those skilled in the art).Elaborating that detail (for example, circuit) is of the invention to describe
In the case where exemplary embodiment, it will be apparent to those skilled in the art that can be in these no details
In the case where or implement the present invention in the case that these details change.Therefore, these descriptions should be considered as explanation
Property rather than it is restrictive.
Although having been incorporated with specific embodiments of the present invention, invention has been described, according to retouching for front
It states, many replacements of these embodiments, modifications and variations will be apparent for those of ordinary skills.Example
Such as, discussed embodiment can be used in other memory architectures (for example, dynamic ram (DRAM)).
The embodiment of the present invention be intended to cover fall into all such replacements within the broad range of appended claims,
Modifications and variations.Therefore, all within the spirits and principles of the present invention, any omission, modification, equivalent replacement, the improvement made
Deng should all be included in the protection scope of the present invention.
Claims (17)
1. a kind of compression test device characterized by comprising for applying stressed pressure unit to measurement sample group, using
Stressed displacement limiting unit, the displacement limiting unit are applied in sample group in described measure in limiting the pressure unit
It is arranged on the pressure unit；Wherein, the measurement sample group is stacked by multiple identical individual samples and is formed.
2. the apparatus according to claim 1, which is characterized in that the pressure unit include: fixation clip, mobile pressing plate,
Fixing bolt group and the corresponding pressure nut group of fixing bolt group, the displacement limiting unit include at least four displacement limits
Device processed；Wherein, the fixation clip is located at the top of each fixing bolt of fixing bolt group；The mobile pressing plate, which is located at, to be fixed
The end of each fixing bolt of bolt group；The fixing bolt group includes at least four fixing bolts；The pressure nut group
Including at least four pressures nut corresponding with the fixing bolt；The centre of the fixing bolt is limited equipped with the displacement
Device；The measurement sample group is placed between the mobile pressing plate and fixation clip；As the pressure nut is tightened, the shifting
Dynamic pressure plate is mobile towards the fixation clip.
3. the apparatus according to claim 1, which is characterized in that the measurement sample group is by three to six identical single examinations
Sample is stacked together；Separated between the individual sample with sandwich.
4. the apparatus of claim 2, which is characterized in that the displacement limiting unit includes at least two displacement limitations
Device, the displacement limiter are respectively arranged on the fixing bolt of the different fixing bolt groups.
5. the apparatus of claim 2, which is characterized in that the mobile pressing plate and the fixation clip are with lateral or vertical
It is arranged to mode.
6. the apparatus of claim 2, which is characterized in that the thickness of the mobile pressing plate and fixation clip is greater than
10mm；The surface roughness of the mobile pressing plate and fixation clip is not more than 0.4 μm.
7. the apparatus of claim 2, which is characterized in that the fixing bolt and the pressure nut surface are by anti-
Corrosion and anti-oxidation processing.
8. the apparatus of claim 2, which is characterized in that the material of the displacement limiter includes that stainless steel and titanium close
Gold.
9. device according to claim 3, which is characterized in that the sandwich includes aluminium foil and filter paper, the sandwich
Chemical reaction is not generated with the individual sample.
10. a kind of compression test method applied to the described in any item compression test devices of such as claim 1-9, feature exist
In, comprising:
Multiple identical individual samples are stacked into measurement sample group, be placed in pressure unit fixation clip and mobile pressing plate it
Between；
Apply uniform pressure to the measurement sample group, reaches the pressure change for detecting the measurement sample group after a certain period of time
Form quotient；
It is each when mobile pressing plate and displacement limiting unit by the pressure distortion rate of displacement limiting unit judgement measurement sample group
After displacement limiter completely attaches to, determines that measurement sample group has reached defined pressure distortion rate, stop applying pressure；
If the pressure distortion rate reaches preset threshold, stopping continues to pressure；
The pressure distortion amount and pressure distortion rate of individual sample is calculated.
11. according to the method described in claim 10, it is characterized in that, described apply uniform pressure to the measurement sample group
Power, comprising:
Each pressure nut corresponding with fixing bolt is tightened, keeps mobile pressing plate mobile towards fixation clip；
When the displacement that the nut that presses generates mobile pressing plate in each point is equal, determine that the measurement sample group is applied
Uniform pressure.
12. according to the method described in claim 10, it is characterized in that, the method also includes:
According to the size and pressure parameter of individual sample, the specific installation site of the displacement limiter is distributed.
13. according to the method described in claim 10, it is characterized in that, the number that stacks of the individual sample is three to six；Institute
It states and is separated between individual sample with sandwich.
14. according to the method described in claim 10, it is characterized in that, the displacement limiting unit includes at least two displacement limits
Device processed, the displacement limiter are respectively arranged on the fixing bolt of the different fixing bolt groups.
15. according to the method described in claim 10, it is characterized in that, described to apply stressed direction include horizontal and vertical.
16. according to the method described in claim 10, it is characterized in that, mobile pressing plate and fixation clip described in entire test
Curvature be no more than 0.01mm；The thickness of the mobile pressing plate and fixation clip is greater than 10mm；The mobile pressing plate and fixation
The surface roughness of pressing plate is not more than 0.4 μm.
17. according to the method described in claim 10, it is characterized in that, the sandwich includes aluminium foil and filter paper, the interlayer
Object and the individual sample do not generate chemical reaction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910180132.XA CN110031293A (en) | 2019-03-11 | 2019-03-11 | A kind of compression test device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910180132.XA CN110031293A (en) | 2019-03-11 | 2019-03-11 | A kind of compression test device and method |
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| CN110031293A true CN110031293A (en) | 2019-07-19 |
Family
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| CN201910180132.XA Pending CN110031293A (en) | 2019-03-11 | 2019-03-11 | A kind of compression test device and method |
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2019
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| CN203479607U (en) * | 2013-09-12 | 2014-03-12 | 徐州工业职业技术学院 | Handling device of rubber compression permanent-deformation compression clamp |
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