CN116973257A - Triaxial multi-sample Young modulus measuring device, system and testing method - Google Patents
Triaxial multi-sample Young modulus measuring device, system and testing method Download PDFInfo
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- CN116973257A CN116973257A CN202310223472.2A CN202310223472A CN116973257A CN 116973257 A CN116973257 A CN 116973257A CN 202310223472 A CN202310223472 A CN 202310223472A CN 116973257 A CN116973257 A CN 116973257A
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- 238000012360 testing method Methods 0.000 title abstract description 19
- 238000013519 translation Methods 0.000 claims abstract description 64
- 230000003287 optical effect Effects 0.000 claims abstract description 15
- 239000000523 sample Substances 0.000 claims description 86
- 238000005259 measurement Methods 0.000 claims description 19
- 230000002457 bidirectional effect Effects 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims 1
- 238000000691 measurement method Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 6
- 239000000463 material Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000004132 cross linking Methods 0.000 description 2
- 238000013178 mathematical model Methods 0.000 description 2
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 description 1
- 108010010803 Gelatin Proteins 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000008273 gelatin Substances 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 235000011852 gelatine desserts Nutrition 0.000 description 1
- 239000000017 hydrogel Substances 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000010413 sodium alginate Nutrition 0.000 description 1
- 229940005550 sodium alginate Drugs 0.000 description 1
- 239000000661 sodium alginate Substances 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
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
- G01N3/40—Investigating hardness or rebound hardness
- G01N3/42—Investigating hardness or rebound hardness by performing impressions under a steady load by indentors, e.g. sphere, pyramid
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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
- G01N3/02—Details
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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
- G01N3/02—Details
- G01N3/04—Chucks
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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
- G01N3/02—Details
- G01N3/06—Special adaptations of indicating or recording means
- G01N3/062—Special adaptations of indicating or recording means with mechanical indicating or recording means
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a triaxial multi-sample Young modulus measuring device, a triaxial multi-sample Young modulus measuring system and a triaxial multi-sample Young modulus measuring method. The measuring system comprises an electric control translation table, three-axis multi-sample Young modulus measuring devices, a porous support base and an optical platform, wherein the electric control translation table comprises a Y-axis translation table and a Z-axis translation table, the two Z-axis translation tables are oppositely and vertically arranged on the optical platform, the three-axis multi-sample Young modulus measuring devices are arranged between the two Z-axis translation tables, the Y-axis translation tables are horizontally arranged on the optical platform, the Y-axis translation tables are positioned between the two Z-axis translation tables, and the porous support base is arranged on the Y-axis translation tables. According to the invention, after the test of the same position of all samples is completed according to the determined proper distance, the ball screw of the electric control translation stage can accurately move to the required distance, so that the time is saved and the test precision is ensured.
Description
Technical Field
The invention relates to the technical field of measurement, in particular to a triaxial multi-sample Young modulus measuring device, a triaxial multi-sample Young modulus measuring system and a triaxial multi-sample Young modulus measuring method.
Background
Nano-indentation instruments are often used by researchers to measure some viscoelastic hydrogel materials (e.g., low concentration sodium alginate, gelatin, etc.) with poor strength as a device for measuring the young's modulus of the material with high accuracy. The internationally existing nanoindentation instrument obtains displacement-force data through a force sensor, and then can be tested according to a hertz model or other mathematical models. The nanoindentation instruments currently used by international researchers typically test only one location of a single sample at a time. In order to disinfect random errors, it is required that each sample needs to measure data at a plurality of positions to have reliability, and measurement experiments also require at least 3 or more samples to ensure the reliability of the data. Thus, as the samples are measured sequentially in sequence, over time, large errors can occur for some materials that are subject to temperature or crosslinking time. For this reason, a new test apparatus is designed to measure a plurality of samples simultaneously to reduce errors. When calculating data for a plurality of locations on the same sample using a mathematical model, it is required that the locations need to be spaced apart by a certain distance. If manual movement is adopted, errors are easy to occur, and an automatic device is required to move. In summary, it is important to design a triaxial multi-sample Young's modulus measuring device and system for simultaneously measuring a plurality of samples.
Disclosure of Invention
The invention aims to provide a triaxial multi-sample Young modulus measuring device, a triaxial multi-sample Young modulus measuring system and a triaxial multi-sample Young modulus measuring method, so as to overcome the defects in the prior art.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the utility model provides a triaxial multiple sample Young modulus measuring device, includes two-way multiple sample measurement bracing piece, draws pressure sensor, probe and pressure head, two-way multiple sample measurement bracing piece includes fixed plate, diaphragm and bracing piece, the both ends of diaphragm all are equipped with the fixed plate, the both sides of diaphragm all are equipped with a plurality of bracing pieces, and every bracing piece all independent connection has draws pressure sensor, every draw and install the probe on the pressure sensor, the lower extreme of probe is located to the pressure head.
Further, each tension and pressure sensor is detachably mounted on the supporting rod through a bolt.
The invention also provides a three-axis multi-sample Young modulus measuring system which comprises an electric control translation table, the three-axis multi-sample Young modulus measuring device, a porous support base and an optical platform, wherein the electric control translation table comprises a Y-axis translation table and a Z-axis translation table, the two Z-axis translation tables are oppositely and vertically arranged on the optical platform, the three-axis multi-sample Young modulus measuring device is arranged between the two Z-axis translation tables, the Y-axis translation table is horizontally arranged on the optical platform, the Y-axis translation table is positioned between the two Z-axis translation tables, and the porous support base is arranged on the Y-axis translation table.
Further, the porous support base comprises a support plate and a boss, wherein double rows of mounting holes are formed in the upper end face of the support plate and used as a trough, and scale marks are formed in the upper end face of the support plate. The double-row mounting holes correspond to the support rods of the bidirectional multiple sample measurement support rods, the boss is arranged on the lower end face of the support plate and is used for being connected with the Y-axis translation table.
Further, the device also comprises a PLC control circuit connected with the electric control translation stage.
The invention also provides a measuring method of the triaxial multi-sample Young modulus measuring system, which is characterized by comprising the following steps of:
s1, placing a sample on the porous support base, and ensuring that the height of the sample is in the same scale line of a trough;
s2, controlling the Y-axis translation stage to move to a set first position;
s3, controlling the two Z-axis translation tables to move downwards, after the sample contacts the pressure head and continuously moves downwards to a set position, returning to lift, and collecting a first group of data;
s4, repeatedly executing the steps S2-S3 until data acquisition of n positions is completed, and forming second to nth groups of data;
s5, transmitting the first to nth groups of data to the terminal.
Compared with the prior art, the invention has the advantages that: the triaxial multi-sample Young modulus measuring device and the porous support base are designed, the triaxial multi-sample Young modulus measuring device can be used for simultaneously measuring a plurality of samples and accurately moving the positions, the triaxial multi-sample Young modulus measuring device is simple, portable and easy to replace, the samples cannot interfere with each other, and the triaxial multi-sample Young modulus measuring device can be expanded and replaced in size at any time according to requirements; the measuring system can realize simultaneous measurement of multiple groups of samples, and avoid a great deal of experimental time caused by time errors of waiting for testing of other samples or sample preparation loss. And the ball screw of the electric control translation stage can accurately move to a required distance according to the determined proper distance after the test of the same position of all samples is completed. Meanwhile, the graduation marks are set on the multi-hole auxiliary clamp, so that the samples can be ensured to be at the same height, and errors caused by inconsistent heights of the samples can be avoided. Therefore, the invention saves time and ensures the test precision.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a three-axis multi-sample Young's modulus measurement system of the present invention, prior to testing.
FIG. 2 is a block diagram of a three-axis multi-sample Young's modulus measuring device according to the present invention.
Fig. 3 is a structural view of a bidirectional multiple sample measuring support bar according to the present invention.
Fig. 4 is a structural view of a porous support base in the present invention.
FIG. 5 is a diagram of the three-axis multi-sample Young's modulus measurement system of the present invention after testing.
In the figure: the device comprises an electric control translation table 1, a triaxial multi-sample Young modulus measuring device 2, a porous support base 3, an optical platform 4, a bidirectional multi-sample measuring support rod 5, a bolt 6, a tension pressure sensor 7, a probe 8, a pressure head 9, a support plate 30, a mounting hole 31, a boss 32, a fixing plate 50, a transverse plate 51 and a support rod 52.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making clear and defining the scope of the present invention.
Referring to fig. 2-3, this embodiment discloses a triaxial multiple sample young modulus measuring device, including two-way multiple sample measurement bracing piece 5, draw pressure sensor 7, probe 8 and pressure head 9, two-way multiple sample measurement bracing piece 5 includes fixed plate 50, diaphragm 51 and bracing piece 52, and the both ends of diaphragm 51 all are equipped with fixed plate 50, and the both sides of diaphragm 51 all are equipped with a plurality of bracing pieces 52, and every bracing piece 52 all independent connection has draws pressure sensor 7, installs probe 8 on every draws pressure sensor 7, and the lower extreme of probe 8 is located to pressure head 9.
Specifically, each of the tension and pressure sensors 7 is detachably mounted on the support rod 52 by a bolt 6.
Referring to fig. 1 and 5, the invention further provides a three-axis multi-sample young modulus measuring system, which comprises an electric control translation stage 1, the three-axis multi-sample young modulus measuring device 2, a porous support base 3 and an optical platform 4, wherein the electric control translation stage 1 comprises a Y-axis translation stage and a Z-axis translation stage, the two Z-axis translation stages are oppositely and vertically arranged on the optical platform 4, the three-axis multi-sample young modulus measuring device 2 is arranged between the two Z-axis translation stages, the Y-axis translation stage is horizontally arranged on the optical platform 4, the Y-axis translation stage is positioned between the two Z-axis translation stages, and the porous support base 3 is arranged on the Y-axis translation stage.
Specifically, the porous support base 3 is designed according to the structure of the three-axis multi-sample young modulus measuring device 2, a sample needs to be placed and the pressure head 9 can contact the sample, and meanwhile, the porous support base 3 needs to be fixed on an electric control translation table. The shape of the jig is different depending on the shape of the test sample. Here, the porous support base 3 is designed in the shape of a rectangular parallelepiped sample. Simultaneously, the porous support base 3 is provided with a threaded hole for being connected with the translation stage.
Referring to fig. 4, the porous support base 3 includes a support plate 30 and a boss 32, where a double-row mounting hole 31 is provided on an upper end surface of the support plate 30, and the mounting hole is used as a trough and is provided with scale marks to ensure that all samples are at the same height. The double-row mounting holes 31 correspond to the support rods 52 of the bidirectional multiple sample measurement support rods 5, the boss 32 is arranged on the lower end face of the support plate 30, and the boss 32 is used for being connected with the Y-axis translation table.
The invention also comprises a PLC control circuit connected with the electric control translation stage 1 so as to control the electric control translation stage 1.
The assembly method of the triaxial multi-sample Young modulus measuring system comprises the following steps:
step 1: the 2Z-axis translation stages were mounted in a direction perpendicular to the optical stage 4 (Z-axis direction) using bolts, and spaced apart by a distance according to the designed three-axis multi-sample Young's modulus measuring device.
Step 2: the Y-axis translation stage is horizontally arranged on the optical platform 4 through bolts and is vertical to the Z-axis direction.
Step 3: the porous support base 3 is arranged on the Y-axis translation stage through bolts;
step 4: the probe 8 is assembled with the ball ram 9 and mounted on the pull pressure sensor 7. A plurality of tension and pressure sensors 7 are connected with a supporting rod 62 through bolts 6. After the completion of the connection, the triaxial multiple sample Young's modulus measuring device 2 was formed. The triaxial multiple sample Young modulus measuring device 2 is connected with 2 vertical Z-axis translation stages through bolts.
Therefore, a triaxial multi-sample Young modulus testing system is formed, and Young modulus of a plurality of soft material samples can be tested.
The invention also provides a measuring method of the triaxial multi-sample Young modulus measuring system, which comprises the following steps:
s1, pouring materials corresponding to the samples into a cuboid mould, placing the samples on the porous supporting base, and ensuring that all the samples are at the same height through scale marks of the supporting base. And then the sample is crosslinked under the crosslinking conditions of a certain temperature, a crosslinking agent and the like.
And S2, controlling the movement of the Y-axis translation stage to move the sample to a set first position by utilizing the PLC control circuit.
And S3, controlling the two Z-axis translation stages to move downwards by utilizing a PLC control circuit, and after the sample is contacted with the pressure head and continuously moves downwards to a set position, returning to lift (as shown in figure 5) to acquire a first group of data.
And S4, repeatedly executing the steps S2-S3 until data acquisition of n positions is completed, forming second to nth groups of data (for example, using a PLC control circuit to control a stepping motor to enable a Y-axis translation stage to move, moving a sample to a set second position, enabling a pressure head to move downwards under the driving of the stepping motor to contact the sample and continuously move downwards to a proper position, then lifting the pressure head back, acquiring the second group of data), and then testing each position of the samples, wherein the test is carried out according to the designed horizontal distance and the designed vertical displacement, and testing the positions of at least 9 points.
Step S5, the first group data to the nth group data are transmitted to the computer terminal.
The triaxial multi-sample Young modulus measuring device and the porous support base are designed, the triaxial multi-sample Young modulus measuring device can be used for simultaneously measuring a plurality of samples and accurately moving the positions, the triaxial multi-sample Young modulus measuring device is simple, portable and easy to replace, the samples cannot interfere with each other, and the triaxial multi-sample Young modulus measuring device can be expanded and replaced in size at any time according to requirements; the measuring system can realize simultaneous measurement of multiple groups of samples, and avoid a great deal of experimental time caused by time errors of waiting for testing of other samples or sample preparation loss. And the ball screw of the electric control translation stage can accurately move to a required distance according to the determined proper distance after the test of the same position of all samples is completed. Meanwhile, the graduation marks are set on the multi-hole auxiliary clamp, so that the samples can be ensured to be at the same height, and errors caused by inconsistent heights of the samples can be avoided. Therefore, the invention saves time and ensures the test precision.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, the patentees may make various modifications or alterations within the scope of the appended claims, and are intended to be within the scope of the invention as described in the claims.
Claims (6)
1. The utility model provides a triaxial multiple sample Young modulus measuring device, its characterized in that, including two-way multiple sample measurement bracing piece, draw pressure sensor, probe and pressure head, two-way multiple sample measurement bracing piece includes fixed plate, diaphragm and bracing piece, the both ends of diaphragm all are equipped with the fixed plate, the both sides of diaphragm all are equipped with a plurality of bracing pieces, and every bracing piece all independent connection has a pressure sensor, every draw and install the probe on the pressure sensor, the lower extreme of probe is located to the pressure head.
2. The triaxial multiple sample young's modulus measuring device according to claim 1, wherein each of the tension and pressure sensors is detachably mounted on the support rod by bolts.
3. The utility model provides a three-axis multi-sample Young's modulus measurement system, its characterized in that includes automatically controlled translation platform, claim 1 or 2 three-axis multi-sample Young's modulus measurement device, porous support base and optical platform, automatically controlled translation platform includes Y axle translation platform and Z axle translation platform, two the relative perpendicular of Z axle translation platform is located on the optical platform, three-axis multi-sample Young's modulus measurement device installs between two Z axle translation platforms, Y axle translation platform horizontal installation is on the optical platform, and Y axle translation platform is located between two Z axle translation platforms, porous support base installs on Y axle translation platform.
4. The triaxial multiple sample young's modulus measuring system according to claim 3, wherein the porous support base comprises a support plate and a boss, the upper end surface of the support plate is provided with double-row mounting holes as a trough and scale marks, the double-row mounting holes correspond to the support rods of the bidirectional multiple sample measuring support rods, the boss is arranged on the lower end surface of the support plate, and the boss is used for being connected with the Y-axis translation table.
5. The triaxial multiple sample young's modulus measurement system according to claim 3, further comprising a PLC control circuit connected to the electronically controlled translation stage.
6. A measurement method of a three-axis multiple sample young's modulus measurement system according to any of claims 3-5, comprising the steps of:
s1, placing a sample on the porous support base, and ensuring that the height of the sample is in the same scale line of a trough;
s2, controlling the Y-axis translation stage to move to a set first position;
s3, controlling the two Z-axis translation tables to move downwards, after the sample contacts the pressure head and continuously moves downwards to a set position, returning to lift, and collecting a first group of data;
s4, repeatedly executing the steps S2-S3 until data acquisition of n positions is completed, and forming second to nth groups of data;
s5, transmitting the first to nth groups of data to the terminal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310223472.2A CN116973257A (en) | 2023-03-09 | 2023-03-09 | Triaxial multi-sample Young modulus measuring device, system and testing method |
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| CN202310223472.2A CN116973257A (en) | 2023-03-09 | 2023-03-09 | Triaxial multi-sample Young modulus measuring device, system and testing method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117825122A (en) * | 2023-12-31 | 2024-04-05 | 中国人民解放军国防科技大学 | Multi-shape sample double-shaft pre-stretching device and method for dielectric elastomer |
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| CN110132750A (en) * | 2019-06-26 | 2019-08-16 | 华东理工大学 | A kind of impression test device and test method |
| CN110836825A (en) * | 2019-11-29 | 2020-02-25 | 重庆交通大学 | Method for estimating tensile deformation of rubber-like superelasticity material in situ based on spherical indentation method |
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- 2023-03-09 CN CN202310223472.2A patent/CN116973257A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110132750A (en) * | 2019-06-26 | 2019-08-16 | 华东理工大学 | A kind of impression test device and test method |
| CN110836825A (en) * | 2019-11-29 | 2020-02-25 | 重庆交通大学 | Method for estimating tensile deformation of rubber-like superelasticity material in situ based on spherical indentation method |
Non-Patent Citations (1)
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| 刘吉森;张进治;: "杨氏模量的动态法测量研究", 北方工业大学学报, no. 01, 30 March 2006 (2006-03-30), pages 1 - 4 * |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117825122A (en) * | 2023-12-31 | 2024-04-05 | 中国人民解放军国防科技大学 | Multi-shape sample double-shaft pre-stretching device and method for dielectric elastomer |
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