In-situ mechanical property testing platform based on optical microscope

Abstract

The invention discloses an in-situ mechanical property testing platform based on an optical microscope. The in-situ mechanical property testing platform comprises a temperature and humidity control unit, a leveling unit, a mechanical test unit, a clamping unit and a control unit, wherein the temperature and humidity control unit, the leveling unit, the mechanical test unit, and the clamping unit the are mounted on a bottom plate and connected with an objective table of the optical microscope. According to the invention, imaging characteristics of an optical microscope are combined, and accurate stretching control is carried out on a sample with a centimeter-level characteristic scale; an optical three-degree-of-freedom displacement platform is used for ensuring the sample to be horizontal,the imaging alignment precision is high, and in combination with microscope camera imaging, in-situ mechanical testing of tensile loading is carried out on the material from a micro / mesoscopic scale;the platform is widely applied to imaging systems such as common optical microscopes, inverted fluorescence microscopes and confocal microscopes; the platform is especially suitable for microscopic in-situ mechanical tests of soft materials and biological tissue materials; by means of integrated quick button operation, the platform has the advantages of being light in weight, small in size, stable in work and flexible and convenient to operate.

Description

technical field [0001] The invention belongs to the technical field of mesoscopic experimental mechanical testing, and in particular relates to an in-situ mechanical performance testing platform based on an optical microscope. Background technique [0002] The microscopic in-situ mechanical testing method combined with mechanical loading device and direct imaging observation is of great significance for understanding the deformation mechanism of materials. The in-situ mechanical testing method is to use a microscopic imaging instrument to conduct continuous real-time analysis of the test piece while performing a mechanical property test, and combine the mechanical property parameters of the sample with the microscopic morphology results collected by the microscopic imaging instrument To study the relationship between the mechanical property parameters of materials and the microscopic morphology, the process of microscopic deformation, damage and failure of materials can be d...

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problem that the existing in-situ loading device for optical imaging cannot eliminate the influence of the small deformation of the soft material sample clamping on imaging, and it is difficult to control the temperature and humidity with high precision in a narrow cavity, the present invention proposes an optical-based The in-situ mechanical performance testing platform of the microscope is used to perform uniaxial tension and compression tests on soft material samples under an optical microscope, and perform in-situ micro-mechanical characterization through digital image processing technology. The specific technical solutions of the present invention are as follows:

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