High-temperature mechanical test device and extensometer auxiliary assembly thereof

Abstract

The invention provides an extensometer auxiliary assembly, which is used for being matched with a contact type high-temperature extensometer to carry out a high-temperature mechanical test, and comprises a buckle assembly, wherein the buckle assembly comprises a U-shaped sleeve and a rotating clamping block, the U-shaped sleeve is provided with a bottom part and two side parts which form a U shape, the bottom is provided with an inner side knife edge, the rotating clamping block is provided with a rotating part, a crimping part, a counterweight part and a connecting part, the rotating clamping block and the U-shaped sleeve define a test piece channel for a test section of a test piece to penetrate through, the inner side knife edge and an end side knife edge are located on the two opposite sides of the test piece channel, and the counterweight part keeps the end side knife edge rotating to shrink the test piece channel, so that the inner side knife edge and the end side knife edge respectively press two opposite surfaces of the test section of the test piece from two sides of the test piece. The invention further provides a high-temperature mechanical test device comprising the extensometer auxiliary assembly. According to the extensometer auxiliary assembly, the slipping risk of the extensometer can be reduced, the test success rate is improved, and the installation and operation difficulty of the contact type high-temperature extensometer can be reduced.

Description

technical field [0001] The invention relates to a high temperature mechanical test device, which comprises a contact type high temperature extensometer. Specifically, the present invention also relates to an auxiliary component of an extensometer, which can cooperate with a contact-type high-temperature extensometer to perform a high-temperature mechanical test. Background technique [0002] With the continuous development and updating of technology, many new high-temperature structural materials have emerged, and the design temperature of such high-temperature structural materials is often very high. Taking ceramic matrix composite materials as an example, this material has broad application prospects in the aerospace field, and the test temperature for the high-temperature mechanical properties of this material is often above 1200 °C. Therefore, it is often necessary to use a contact high-temperature extensometer to measure the deformation data of this new type of high-te...

AI Technical Summary

Problems solved by technology

[0003] In the actual high-temperature mechanical test, the inventor found that the front end of the extension rod of the extensometer is prone to slipping relative to the surface of the tested test piece during the test, which will cause inaccurate, wrong or failure of the test, which will lead to Test success rate reduces efficiency and increases test cost

In addition, the existing high-temperature extensometers are difficult to install and operate.

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