Instrument and method for testing mechanical property of materials under tension-torsion composite-force-thermal coupling working conditions

Abstract

The invention relates to an instrument and method for testing the mechanical property of materials under tension-torsion composite-force-thermal coupling working conditions, and belongs to the field of precision instruments and equipment. The instrument includes a supporting module, a tension loading module, a torsion loading module, a high temperature loading module and an in-situ monitoring module; and a torsion motor of the torsion loading module is fixed to one side of a first helical gear reducer and the other side of the first helical gear reducer is fixed to an upper base of the supporting module through fixing bolts, so that a sample to be tested is subjected to bidirectional and simultaneous tension loading. The tension-torsion combined load loading and test can be performed on the sample to be tested under high temperature environment, the mechanical behavior and performance evolution law of the materials under the action of high temperature and tension-torsion complex mechanical loads are dynamically tested, and the characteristics of stable whole machine structure, rich compatible modules, high test accuracy, high complexity of load loading environment are achieved. Important foundation and support are provided for material development and preparation, optimization design of mechanical equipment, life prediction and reliability assessment.

Description

technical field [0001] The invention relates to the field of precision instruments and equipment, in particular to a precision instrument and equipment for testing and characterizing the mechanical properties of materials, especially to an instrument and method for testing the mechanical properties of materials under the working conditions of tension-torsion composite-force-heat coupling. The instrument and equipment can realize the composite loading of tensile / compression-torsion load on the tested sample under high temperature environment, and integrate the in-situ monitoring module to observe the mechanical behavior and performance evolution law of the material under complex mechanical load in real time. The invention provides a new test method and idea for the research on the service performance of materials under complex static and dynamic mechanical loads and extreme physical fields; at the same time, it provides important information for the research and development of m...

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Problems solved by technology

[0004] The purpose of the present invention is to provide an instrument and method for testing the mechanical properties of materials under the working conditions of tension-torsion composite-force-thermal coupling, which solves the problems in the prior art that the loading type of the testing machine is single, there is no external physical field, and the in-situ observation cannot be performed. Coupling with mechanical load loading and physical field loading, etc.

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