Three-way pressure loading device suitable for nanoindentation test system

Abstract

The invention provides a three-way pressure loading device suitable for a nanoindentation test system, the three-way pressure loading device comprises a bottom plate, a panel, a horizontal loading mechanism and a vertical loading mechanism, wherein the center of the bottom plate is provided with a loading groove, the panel is connected with the bottom plate through a connecting piece, the center of the panel is provided with a through conical probe hole. The horizontal loading mechanism comprises a plurality of horizontal loading execution units and a plurality of horizontal loading driving units, the vertical loading mechanism comprises a vertical loading execution unit and a vertical loading driving unit, the vertical loading execution unit is arranged in the center of the interior of the loading groove, and the plurality of horizontal loading execution units are symmetrically arranged with the vertical loading unit as the center; a sample containing cavity is formed in the center of the top of the vertical loading unit, and the horizontal loading driving unit and the vertical loading driving unit are arranged outside the loading groove and communicated with the horizontal loading execution unit and the vertical loading execution unit through oil pipes. According to the device, the limitation of the existing test measurement means is overcome, the mechanical property of the material in service is more truly represented, and the device is greatly helpful for scientific research and engineering application.

Description

technical field [0001] The invention belongs to the technical field of testing equipment for testing mechanical properties of materials, and in particular relates to a three-way pressure loading device suitable for a nano-indentation testing system. Background technique [0002] The traditional macro-material mechanics testing methods are mostly destructive tests, which have high requirements on the size and integrity of the sample, and the test period is long, the price is expensive, the data is discrete, and the accuracy is difficult to guarantee. Application value is limited. As a non-destructive testing, simple and reliable micromechanical characterization technique, nanoindentation technology has been widely used in the fields of materials science, bioengineering, and life assessment of active components. [0003] At the same time, my country attaches great importance to deep mining of coal mines, and hopes to accelerate the comprehensive utilization of geothermal, sha...

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Problems solved by technology

[0004] However, the environment in which materials and components exist in real service is relatively complex, such as rocks are mostly in a complex in-situ stress state, but the measurement environment that the existing nanoindentation instrument can provide is relatively simple, and it is impossible to truly simulate and respond to the test materials in the environment. Mechanical properties under multidirectional stress state

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