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Integrated testing device under multi-field coupling environment

A technology for testing devices and environments, applied to measuring devices, using stable tension/pressure to test the strength of materials, and controlling multiple variables at the same time, it can solve problems such as inability to expand at the same time

Active Publication Date: 2021-07-27
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For materials such as cardiovascular stents, inner walls of water pipes, and marine steel structures, it is obvious that their service environments cannot be truly simulated in their multi-field coupling service environments through simple modification of large-scale equipment
In addition, large-scale equipment can only monitor the performance changes of a single sample at the same time, and long-term tests such as fatigue tests cannot be carried out at the same time. However, in the test stage, in order to test extensively and find suitable materials, it is often necessary to carry out a large number of performance tests simultaneously.

Method used

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  • Integrated testing device under multi-field coupling environment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] combine figure 1 In the device shown, the selected sample 23 is a 2000 series aluminum alloy material, the sample is machined into a dumbbell shape, and the gauge length is Φ3*10mm; sample 23 is clamped by the fixture 7 at the left end of the sample and the fixture 21 at the right end of the sample, Fix the left end movable support plate 6 and the right end movable support plate 15 through the left end clamp fixing nut 5 and the right end clamp fixing nut 17; the flow field environment module 24 is not connected to the experimental device, and the sample 23 is directly exposed to room temperature air environment for testing ; The axial tension loading rate of the AC servo motor 18 controlled by the servo drive encoder 16 is 10 -5 mm·s -1 , that is, the strain rate of sample 23 is 10 - 6 the s -1 ; Adopt force sensor 20 to collect the force value that sample 23 is subjected to, and feed back to test control computer 13 in real time through force value digital display...

Embodiment 2

[0035] On the basis of Example 1, connect the flow field environment module 24 to the experimental device, add 3.5% NaCl solution to the flow field environment module 24, and keep the loading rate of the sample 23 consistent with that of Example 1 under the test environment at room temperature. Use the test control computer 13 to draw the force-displacement curve of sample 23 in 3.5% NaCl solution, and compare it with the force-displacement curve of the sample in air in Example 1 to analyze the influence of the corrosive medium on the mechanical behavior of the sample mechanism.

Embodiment 3

[0037] combine figure 1 In the device shown, the selected sample 23 is AZ31 magnesium alloy material, the sample is machined into a dumbbell shape, and the gauge length is Φ3*10mm; The left end clamp fixing nut 5 and the right end clamp fixing nut 17 are fixed on the left end movable support plate 6 and the right end movable support plate 15; the flow field environment module 24 is connected to the experimental device, the simulated plasma solution is added to the flow field environment module 24, and the temperature The temperature is 37°C; the AC servo motor 18 is controlled by the servo drive encoder 16, and a tensile load is applied to the sample 23, and the tensile load on the sample 23 is adjusted to 282.6N in combination with the force value digital display table 14; figure 2 The device shown is plugged into the figure 1 In the shown device, the working electrode electrode wire 32, the counter electrode electrode wire 33 and the reference electrode electrode wire 34 d...

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PUM

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Abstract

The invention discloses an integrated testing device under a multi-field coupling environment, which comprises a mechanical behavior experiment system and a corrosion behavior experiment system mutually switched to realize the testing of mechanical and corrosion behaviors of a material under the multi-field coupling environment and monitor the expected performance of the material under a multi-factor collaborative interaction condition. The experimental device is simple in structure, low in cost and convenient to operate, controllable adjustment of the loading direction, the load size, the loading rate, the flow field direction, the flow field flow speed, the flow field environment temperature and the corrosive medium can be achieved, real-time, in-situ and dynamic monitoring can be conducted on materials from the aspects of mechanics, corrosion behaviors and the like, the device is suitable for samples of different materials and different sizes in different service environments, and provides technical support for scientifically and reasonably evaluating mechanical and corrosion performance evolution of materials in a simulated service environment.

Description

technical field [0001] The invention relates to an experimental device, in particular to an integrated test device under a multi-field coupling environment. Background technique [0002] Fracture failure and corrosion failure are important reasons for the loss of function or even permanent damage of equipment component materials, and the failure of component materials will have a significant impact on the stable and reliable operation of equipment. Therefore, a reasonable characterization of the performance of materials in service environments Evolution, while scientifically evaluating the service life of materials, will undoubtedly provide a theoretical and practical basis for the safe use of materials. During service, in addition to bearing a certain load, the material will also be corroded by the corrosive medium in the surrounding environment. Generally speaking, the surface damage and stress caused by the corrosion of materials in the working medium have a synergistic ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N17/00G01N17/02G01N3/08G01N3/02G05D27/02
CPCG01N17/006G01N17/02G01N3/08G01N3/02G05D27/02G01N2203/0017G01N2203/005G01N2203/0075G01N2203/024G01N2203/0268
Inventor 储成林戴建伟李旋白晶薛烽
Owner SOUTHEAST UNIV
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