Cross-scale micro-nano-scale in-situ composite load mechanical performance testing platform

Abstract

The invention relates to a cross-scale micro nanometer grade in-situ composite load mechanical property testing platform, belonging to electromechanics. The cross-scale micro nanometer grade in-situ composite load mechanical property testing platform is composed of a precision drive and transmission unit, a signal detection and control unit and a clamping, connecting and supporting unit, wherein,in the precision drive and transmission unit, a DC servo motor provides power output, and a two-stage worm and gear mechanism with large reduction ratio and a precision ball screw mechanism transmit power; the signal detection and control unit is composed of a precision displacement sensor, a precision pull pressure sensor and a coder in coaxial rigid connection with the DC servo motor; and the clamping, connecting and supporting unit comprises a clamper component for locating and mounting a standard test specimen, and the like. The cross-scale micro nanometer grade in-situ composite load mechanical property testing platform can be compatible with imaging instruments, and performs a cross-scale in-situ micro nanometer composite load test on a macroscopic test specimen through observation via the imaging instruments, so as to perform in-situ monitoring on processes of microscopic deformation, injury and fracture of materials, so that a new testing method for revealing the mechanical properties and the injury mechanism of the materials at the micro nanometer grade is provided.

Description

technical field [0001] The invention relates to electromechanical products, in particular to a cross-scale micro-nano scale in-situ composite load mechanical performance testing platform. Under the in-situ monitoring of microscopic imaging instruments such as electron microscopes (such as scanning electron microscope SEM, transmission electron microscope TEM, scanning probe microscope SPM, etc.), including in-situ tension / compression test, in-situ shear test, in-situ Composite load mechanics tests including tensile / shear and compression / shear tests can conduct online observation of the microscopic deformation, damage and failure process of materials, and can realize the collection and control of load / displacement signals, and can test materials Mechanical properties and damage mechanisms at the nanoscale. Background technique [0002] In-situ nanomechanical testing refers to a process of dynamic monitoring of the microscopic deformation and damage of materials under load th...

AI Technical Summary

Problems solved by technology

Traditional tensile machines and shear testing machines are aimed at macro-scale specimens, which do not involve the mechanical properties of materials in the nano-scale category, nor do they involve in-situ observations under high-resolution microscopic imaging systems

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