High-temperature double-axis synchronous drawing mechanical property testing instrument and method

Abstract

The invention relates to a high-temperature double-axis synchronous drawing mechanical property testing instrument and method and belongs to the field of precision scientific instruments. According to the device provided by the invention, three bevel gears, which are mutually orthogonal, are driven by one alternating current servo motor, so that equal-speed synchronous drawing of X axis and Y axis is realized, and non-equal-speed synchronous drawing of the X axis and the Y axis is realized; and single-axis drawing along an X-axis direction also can be realized. A high-temperature heating furnace is provided with an optical window and can be integrated with an optical microscope; and dynamic in-situ monitoring of micro-mechanical behaviors and an injury mechanism in a material temperature-varying drawing testing process is realized. By adopting a novel innovative structure, the difficulty that synchronous loading is difficult to realize through double-axis drawing is effectively overcome; meanwhile, the high-temperature double-axis synchronous drawing mechanical property testing instrument also has functions of the non-equal-speed synchronous drawing, the single-axis drawing and the like, and has the advantages of compact structure, small occupied area, convenience for integration and control and good application prospect; and the high-temperature double-axis synchronous drawing mechanical property testing instrument has very important meanings on testing researches on dynamic properties when the material bears a complicated stress state under a high-temperature condition.

Description

technical field [0001] The invention relates to the field of precision scientific instruments in the field of testing the microscopic mechanical properties of materials, in particular to a high-temperature biaxial synchronous tensile mechanical property testing instrument and a testing method. The instrument can study the failure mechanism of materials subjected to complex stress states under high temperature conditions, and can accurately test the mechanical behavior, damage mechanism and performance weakening law of materials subjected to simultaneous biaxial stretching under high temperature conditions. Background technique [0002] As one of the three pillar industries in the 21st century, the importance of materials is self-evident. In modern society, the relationship between materials and national industry is getting closer. However, in the actual service state, the material is usually not subjected to a single load. However, traditional testing techniques only measu...

AI Technical Summary

Problems solved by technology

The disadvantages of this design are: (1) Due to the large number of drive units, the structure of the instrument is more complicated; (2) Since the drive unit is not unique, it is difficult to completely realize complete synchronous loading

In addition, it is difficult for the previous biaxial stretching instrument to realize the high temperature loading temperature range from room temperature to 1600 °C

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