Material in-situ detection device and method under multi-load multi-physical field coupling service conditions

Abstract

The invention relates to a material in-situ detection device and method under multi-load multi-physical-field coupling service conditions, and belongs to the field of precise scientific instruments. The material in-situ detection device is composed of a precise six-degrees-of-freedom composite load loading module, a precise torsion module, a precise indentation module, a clamp module and a control module which work together to complete a composite-load multi-physical-field coupling experiment, a digital speckle strain measurement and infrared thermal imaging module and a microscope observation module are integrated, and in-situ observation and quantitative characterization are carried out on material deformation behaviors and damage mechanism phenomena in a composite-load multi-physical-field loading process. The device and the method have the advantages that the composite-load loading can be realized, and a novel loading method such as 'cantilever type pure bending, cantilever type tensile / compression-torsion, and cantilever type bending-torsion' is carried out. Silicon nitride ceramic heating sheets, Peltier tiles and current loading are used for achieving simulation of cold / hot-electricity and other multiple physical fields, and an improvement innovative experimental testing method is provided for material micromechanical property tests close to the serving conditions.

Description

Technical field [0001] The invention relates to the field of precision scientific instruments, in particular to a material in-situ testing device and method under multi-load and multi-physical field coupling service conditions. In addition to the "tensile / compression-torsion-bending-indentation" tests of the traditional testing machine, the present invention can also carry out such tests as "cantilever pure bending and cantilever tension / compression-torsion" under compound loads. , Cantilever bending-torsion, cantilever tension / compression-bending-torsion" and other new loading methods. At the same time, it combines the loading of multiple physical fields such as cold / heat-electricity to realize the loading mode of multiple fields and multiple loads. And apply a new measurement method-non-contact digital speckle measurement technology to measure the strain of the specimen during the test. Background technique [0002] Manufacturing is a pillar industry of the national economy a...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a material in-situ test device and method under the condition of multi-load multi-physics coupling service, to solve the problem that the existing test technology cannot realize composite load loading

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