Liquid-state in-situ corrosion fatigue device and testing method

A corrosion-fatigue, in-situ technology, used in measuring devices, weather resistance/light resistance/corrosion resistance, instruments, etc., can solve the problem of collecting the surface strain field or fatigue crack propagation of the sample, and the adaptability of samples with different shapes needs to be improved. Real-time information collection of samples is difficult and other problems, to achieve the effect of easy processing and assembly, good analysis accuracy, and simple structure

Inactive Publication Date: 2018-12-11
CIVIL AVIATION UNIV OF CHINA
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Problems solved by technology

At present, there are few design methods of corrosion equipment, and its overall adaptability to samples of different shapes needs to be improved
In addition, due to the complex environment of the sample during the in-situ corrosion fatigue test, the corrosion equipment and corrosive liquid will cause difficulties in the real-time information collection of the sample
[0003] The Chinese patent application whose publication number is 106596384 discloses a corrosion solution circulation system for metal material corrosion fatigue

Method used

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  • Liquid-state in-situ corrosion fatigue device and testing method
  • Liquid-state in-situ corrosion fatigue device and testing method

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[0026] The embodiments of the present invention will be described in detail below in conjunction with the technical solutions and drawings:

[0027] Such as figure 1 As shown, the liquid in-situ corrosion fatigue device 7 provided by the present invention includes a panel 1, a side plate 2, a conduit 3, a fixing table 4, and a sealing member 5; two of the panels 1 are arranged in parallel along the vertical direction; the two side plates 2 are respectively Connected to the two sides of the two panels 1 to form the main body of the device with a corrosion cavity formed inside; two seals 5 are installed on the upper and lower ends of the main body of the device, and the middle of each seal 5 along the panel 1 A long sample socket is formed in the direction; each side plate 2 is equipped with a pipe 3 through a fixing table 4, the inner end of the pipe 3 passes through the side plate 2 and is connected to the corrosion chamber, and the outer end is connected Corrosive liquid deliver...

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Abstract

The invention provides a liquid-state in-situ corrosion fatigue device and a testing method. The device comprises a panel, a side plate, a guide pipe, a fixed platform and a sealing part. The liquid-state in-situ corrosion fatigue device has the advantages that a flow speed of a corrosion solution can be adjusted through changing the power of a submersible pump. The liquid-state in-situ corrosionfatigue device has good sealing performance, can be repeatedly utilized for long time, has certain corrosion resistance and has certain tolerance on inorganic acid and alkali type corrosion media; theliquid-state in-situ corrosion fatigue device is low in cost, simple in structure and easy to process and assemble; the testing method provided by the invention is combined, and a test sample can bemonitored in real time in a liquid in-situ corrosion fatigue experiment process. The testing method can be used for eliminating influences, caused by the corrosion solution, on DIC (Density IndicatingController) information acquisition quality; good analysis precision can be ensured. The testing method is simple in steps and is easy to operate.

Description

technical field [0001] The invention belongs to the technical field of material in-situ corrosion fatigue research, in particular to a liquid in-situ corrosion fatigue device and a testing method. Background technique [0002] In practical engineering applications, fatigue and corrosion of materials often occur at the same time. This form of failure is called corrosion fatigue, which leads to cracking of materials at low stress levels. This form of damage has no symptoms and is more likely to cause serious safety hazards. In order to study this kind of actual damage condition, it is necessary to provide a corrosion environment for the sample by the in-situ corrosion device while bearing the fatigue load, and maintain a good seal for a long time under the dynamic load to avoid the leakage of the corrosive medium, which is of great importance The in-situ corrosion device puts forward higher design requirements. At present, there are few design methods of corrosion equipment, ...

Claims

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Application Information

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IPC IPC(8): G01N17/00
CPCG01N17/00
Inventor 陈亚军宋先捷季春明宋肖肖王付胜
Owner CIVIL AVIATION UNIV OF CHINA
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