Precision material micro mechanical property in-situ torsion testing platform

Abstract

The invention relates to a precision material micro mechanical property in-situ torsion testing platform and belongs to the field of machinery. According to a torsion loading mechanism, a torque is loaded at one end of a driving clamp and is loaded to a testing workpiece; one end of a driven clamp is arranged on a precision guide rail slide block and has a degree of freedom in the axis direction of the testing workpiece; a precision torque sensor is arranged at one end of the driven clamp; two belt wheels are arranged on the testing workpiece; the corners on two sides of the workpiece are respectively transmitted to two precision angular displacement sensors through belts; an angular displacement signal is fed back to a detection system; the absolute corner on the nominal dimension of the workpiece is calculated, the detection precision of the angular displacement in a torsion test is obviously improved, and adverse impact on the testing precision is greatly reduced. The electromagnetic compatibility and vacuum compatibility of a testing device and an electron microscope operating cavity are realized, the material in-situ micro-nano torsion mechanical testing is realized, and a good method is provided for testing the torsional mechanical properties of the material under the micro-nano scale.

Description

technical field [0001] The invention relates to the fields of material science, ultra-precision machining, solid mechanics and the like. The in-situ torsion test platform for the micro-mechanical properties of precision materials is a device with small volume and exquisite structure that can be used for testing the micro-nano torsion mechanical properties of precision materials. Through the invention, the in-situ torsion test can be performed on the test piece under the observation of various imaging instruments, and the in-situ observation can be performed on the microscopic deformation and damage process of the material. The device will have good application prospects in the fields of material science, ultra-precision machining, solid mechanics and the like. Background technique [0002] In-situ micro-nano mechanical testing technology is a cutting-edge technology developed in recent years, which has attracted great attention from governments and research institutions of...

AI Technical Summary

Problems solved by technology

At present, micro-nano torsional mechanical tests are mainly carried out in transmission electron microscope (TEM) and scanning electron microscope (SEM), both of which have very limited working chambers, and it is necessary to ensure the electromagnetic compatibility and Vacuum compatibility, it is these reasons that limit the rapid development of micro-nano torsional mechanics testing technology

Overall, it is still a challenging and urgent task to study the micro-nano torsional mechanics test device with high precision, large test range and low cost.

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