On-site testing platform for micromechanical property of material in shearing-torsion loading combination mode

Abstract

The invention relates to an on-site testing platform for the micromechanical property of a material in a shearing-torsion loading combination mode, belonging to the field of precision scientific instruments. The on-site testing platform comprises a precision shearing loading driving unit, a precision torsion loading driving unit, a mechanics and deformation signal detection and a test piece clamping unit and the on-site testing platform can be used for respectively testing the micromechanical property of the material by single loading action of shearing or pure torsion, and can also be used for testing micromechanical property of the material in a shearing-torsion loading combination mode. The on-site testing platform has the advantages of multiple functions and compact and light structure, has the functions of driving, loading, detection and dynamic testing of multiple micro properties of the material, can be well compatible with main commercial instruments such as a scanning electronic microscope, an optical microscope (a metallurgical microscope), an X-ray diffractometer and the like, and can dynamically research the microstructure of the material and the relative rules of a deformation damage mechanism under different types of loading by combining the material property test representation instruments.

Description

technical field [0001] The invention belongs to the category of precision scientific instruments, in particular to an in-situ test platform for material micromechanical properties in a shear-torsion composite loading mode. It can be used independently as a pure shear or pure torsion single-load material micro-mechanical performance test platform, and can also realize the micro-mechanical performance test of materials under torsional load under a given shear stress level or shear under a given torsional moment state. The micro-mechanical performance test of materials under shear load, that is, the micro-mechanical performance test of materials in the composite load loading mode. In addition, the platform can be used for in-situ monitoring of scanning electron microscopes, optical microscopes (metallographic microscopes), X-ray diffractometers and other instruments, including in-situ shear load loading mode for material micro-mechanical performance testing, in-situ torsional loa...

AI Technical Summary

Problems solved by technology

Compared with the single mode, the stress, deformation and failure of the materials and components working under the composite load mode are more complicated.

Therefore, it is difficult to accurately express the loading form of materials and components under actual working conditions by using the mechanical testing method for a single load form, that is, it is impossible to make an accurate evaluation of the mechanical properties of materials under the action of composite loads.

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