Actuating Mechanism of Fatigue Testing Machine with Improved Synchrotron Radiation Light Source In Situ Imaging
A fatigue testing machine and actuating mechanism technology, applied in the direction of applying repeated force/pulsation force to test the strength of materials, instruments, measuring devices, etc., can solve problems such as looseness and unsmooth testing, and achieve imaging accuracy and The effect of high sensitivity, high image signal-to-noise ratio, and reliable test basis
Active Publication Date: 2018-10-30
SOUTHWEST JIAOTONG UNIV
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Problems solved by technology
However, it is found that during the fatigue test of the fatigue testing machine, due to the severe vibration generated, and the action of the chuck on the sample during the test, the severe vibration often leads to loosening.
In addition, there is no further adjustment method after the plastic deformation of the sample, so that the test cannot be carried out smoothly. Based on this actual situation, it is very necessary to further improve the actuating mechanism of the chuck
Method used
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[0021] figure 1 , figure 2 It is shown that the fatigue testing machine for in-situ imaging with synchrotron radiation light source is composed of:
[0022] The cross 1a at the bottom of the base plate 1 is fitted on the platform 2 of the synchrotron radiation source, and the middle part of the upper surface of the base plate 1 is fixed with a cylindrical base 3; the push rod 4 is installed on the left wall of the base 3 through a horizontal linear bearing 2 19 and On the right wall; Servomotor 5 is installed on the left side of base plate 1 upper surface, and cam 6 is installed on servomotor 5 axles; The right edge of the push rod 4 is in contact with the middle part of the push rod 4 and the lower end of the connecting rod 8 is hinged, and the right end of the push rod 4 is connected to the right wall of the base 3 by a spring 9.
[0023] The improved actuating mechanism of the fatigue testing machine for in-situ imaging of the synchrotron radiation light source is arrang...
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The invention discloses an improved actuating mechanism of a fatigue testing machine for in-situ imaging of a synchrotron radiation light source, which is arranged on a cylindrical bottom plate of a platform of a synchrotron radiation light source for realization on a fatigue testing machine for in-situ imaging of a synchrotron radiation light source A vertical displacement load is applied to the sample. Compared with the previous generation of fatigue testing machine, the present invention has made further improvements, reducing the friction generated by the cam action mode, thereby reducing its energy consumption and further increasing its noise reduction performance; further fully ensuring that the load on the sample is applied, the corresponding Compared with the previous generation of test machines, more detailed considerations have been made in the details of the test implementation process.
Description
technical field [0001] The invention relates to a sample actuating mechanism, installation and experiment method of a fatigue testing machine for in-situ imaging with a synchrotron radiation light source Background technique [0002] For a long time, people have carried out a lot of research on the fatigue damage of engineering structures. It is generally believed that the fatigue life is mainly consumed in the stages of crack initiation and short crack growth. Macroscopically, the propagation behavior of short cracks changes with the increase of crack length, and microscopically, it is also affected by factors such as metal microstructure and environment, coupled with crack closure and small crack effects, etc. The problem of short crack propagation becomes very complicated. In order to better explore the relationship between the crack growth process and microstructure changes and macroscopic mechanical properties, and to provide a more reliable theoretical basis for the ...
Claims
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IPC IPC(8): G01N3/38
CPCG01N3/38G01N2203/0005
Inventor 吴圣川张思齐宋哲
Owner SOUTHWEST JIAOTONG UNIV