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Material micro-mechanical property biaxial tension-fatigue test system and test method thereof

A technology of micromechanics and biaxial stretching, which is applied in the direction of testing material strength by applying repetitive force/pulsation force and testing material strength by applying stable tension/compression. Novel, guaranteed symmetry and synchronicity effects

Active Publication Date: 2015-09-16
JILIN UNIV
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Problems solved by technology

[0004] In addition, most of the plate and shell structural components in actual engineering are subjected to two-way loads, including single crystal metals, concrete, and some anisotropic composite materials. Only the mechanical properties of their single bearings under tensile loads are studied, and not objective

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  • Material micro-mechanical property biaxial tension-fatigue test system and test method thereof
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  • Material micro-mechanical property biaxial tension-fatigue test system and test method thereof

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Embodiment Construction

[0038] The detailed content of the present invention and its specific implementation will be further described below in conjunction with the accompanying drawings.

[0039] see Figure 1 to Figure 7 As shown, the biaxial tension-fatigue testing system for material micromechanical properties of the present invention includes a precision loading-transmission unit, a fatigue unit, a mechanical and deformation signal detection unit, a specimen clamping unit, etc., wherein the precision loading-transmission unit passes Screws are fixed on the bottom plate 5, and the fatigue unit is installed on the precision loading-transmission unit through two symmetrical guide rails Ia32, slider Ia31, guide rail Ib36, and slider Ib35, and the fatigue unit is respectively connected to the specimen through four identical connecting rods 17. The clamping units are connected, and the mechanical and deformation signal detection unit is installed on the specimen clamping unit; the test method utilizes...

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Abstract

The invention relates to a material micro-mechanical property biaxial tension-fatigue test system and a test method thereof, and belongs to the field of precise scientific instruments. The test method is characterized in that orthogonal tensile load is applied to a test piece to make two mutually vertical tensions exist in one plane, and fatigue load can also be applied to the test piece on the basis of the tensile load in order to research the micro-mechanical properties of a material under different load forms and load sizes. The system is composed of a precise loading-transmitting unit, a fatigue unit, a mechanics and deformation signal detection unit, and a test piece clamping unit. The test system has the advantages of novel and compact structure, respective realization of uniaxial tension test, biaxial tension test, uniaxial tension-fatigue test and biaxial tension-fatigue test, good compatibility with an optical microscope, and dynamic research of the relationship between the microstructure of the material and the deformation damage mechanism under tension-fatigue load conditions.

Description

technical field [0001] The invention relates to the field of precision scientific instruments, in particular to a biaxial tension-fatigue test system and a test method for the micromechanical properties of materials. It can be used as a test platform for uniaxial tension, biaxial tension, single-cycle tension-fatigue, and biaxial tension-fatigue material micromechanical properties, and it can also be used as a biaxial tension-fatigue material micromechanical property test. Axial co-frequency fatigue and biaxial non-coherent frequency fatigue tests. Moreover, the system can perform the above-mentioned micro-mechanical performance tests of various materials under some optical microscopes, so as to realize real-time observation of the micro-mechanical behavior and deformation damage process of the tested materials. At the same time, the quasi-static loading technology in the stretching process is realized through the reducer and the worm gear with a large reduction ratio; th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/08G01N3/32
Inventor 赵宏伟刘阳李柠张世忠代晓航王顺博霍占伟马志超范尊强董景石
Owner JILIN UNIV
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