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Cantilever type rotation bending in situ fatigue testing machine for performing three-dimensional imaging by adopting X-rays

A fatigue testing machine, three-dimensional imaging technology, applied in the application of stable bending force for testing material strength, using wave/particle radiation for material analysis, measuring devices, etc. and other problems, to achieve the effect of ingenious design, simplified clamping and novel structure

Active Publication Date: 2018-12-11
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0005] At present, there is no cantilever type rotary bending in-situ fatigue testing machine that can perform three-dimensional imaging with high-energy X-rays at home and abroad.

Method used

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  • Cantilever type rotation bending in situ fatigue testing machine for performing three-dimensional imaging by adopting X-rays
  • Cantilever type rotation bending in situ fatigue testing machine for performing three-dimensional imaging by adopting X-rays
  • Cantilever type rotation bending in situ fatigue testing machine for performing three-dimensional imaging by adopting X-rays

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Embodiment Construction

[0026] In the figure, 1 is the (upper fixture) sleeve, 2 is the upper fixture, 3 is the load sensor, 4 is the (load application) support seat, 5 is the threaded sleeve, 6 is the lower fixture, 7 is the deep groove ball bearing, 8 9 is the (plum-shaped) elastic coupling, 10 is the front and rear fixing seat of the motor, 11 is the chuck (light source platform and testing machine base), 12 is the support seat (upper fixture sleeve), 13 is (loading Mechanism) support, 14 is the glass cover, 15 is the upper cover (testing machine support), 16 is the testing machine support, 17 is the upper and lower fixing seat of the motor, 18 is the servo motor, 19 is the (testing machine) base, 20 21 is the light source transmitter, 22 is the light source receiver, 23 is the data acquisition and motor controller, 24 is the image processing unit, 25 is the cylindrical roller bearing, 26 is the sample, 27 is the load applying screw, 28 Be a linear bearing, 29 is (test) block one, and 30 is block ...

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Abstract

The invention relates to a cantilever type rotation bending in situ fatigue testing machine for performing three-dimensional imaging by adopting X-rays. The machine mainly consists of a force loadingunit, a sample clamping unit, a movement unit, a transmission unit and a data collecting and controlling unit. A servo motor is adopted for movement, the rotational movement of the motor is transmitted to the lower clamp of a sample through a quincuncial elastic coupler, and the sample is driven by the clamp to perform rotational movement. The upper clamp of the sample is connected with a force loading unit, and radial force is applied to a shaft-shaped sample through twisting a screw, so that the sample is bent. In the process of fatigue tests, a synchronous radiation light source can penetrate a metal sample in an unobstructed mode to perform synchronous radiation imaging so as to obtain a three-dimensional image of a material with a damaged interior; the evolving law of a material interior structure is clearly and accurately reflected in the process of rotation bending fatigue, and indispensable technical equipment is supplied for researching the flaw and crack evolution behavior ofthe material in rotation bending fatigue.

Description

technical field [0001] The invention relates to a device for testing mechanical properties of materials, in particular to a material in-situ fatigue testing machine for three-dimensional imaging using high-energy X-rays. Background technique [0002] Traditional methods such as optical microscopy and electron microscopy can only obtain fatigue cracks on the surface of materials, while the three-dimensional fatigue cracks and their coupling behaviors caused by internal pores, slag inclusions, structures, etc. are completely different from those on the surface. The third-generation high-energy X-ray computed tomography technology has sub-micron space and microsecond time resolution and excellent detection capabilities of hundreds of keV, which is several orders of magnitude higher than the test level of conventional X-ray machines. A large-scale scientific device for visual research on fatigue damage evolution of bulk metal materials. The combination of miniature in-situ fati...

Claims

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Application Information

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IPC IPC(8): G01N3/20G01N23/046
CPCG01N3/20G01N23/046G01N2203/0003G01N2203/0023G01N2203/0073
Inventor 吴圣川谢成吴正凯康国政刘宇杰
Owner SOUTHWEST JIAOTONG UNIV
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