Microscopic CT in-situ tensile testing device

Abstract

The invention discloses a microscopic CT in-situ tensile testing device which comprises a sealed experiment cavity, an upper tensile rod, a lower tensile rod, a control system and an adjusting system.The sealed experiment cavity is provided with a cavity door for taking and placing a sample, and a circle of transparent window which is arranged in the middle section of the sealed experiment cavityand allows X-rays to pass through; the upper and lower stretching rods respectively penetrate through the top and the bottom of the experiment cavity and are in dynamic sealing connection with the sealed experiment cavity; the control system comprises a pressure control system and a temperature control system, the pressure control system is used for controlling the atmosphere in the sealed experiment cavity, and the temperature control system is used for controlling the temperature of a sample in the sealed experiment cavity and comprises a heating lamp and a temperature sensor; the adjustingsystem is used for adjusting the spatial position of the sample, comprises a regulation and control table and a hexagonal table, and is in dynamic sealing connection with the bottom of the sealed experiment cavity through an adapter plate. According to the invention, a sample can be accurately controlled to be heated and pressurized in the CT tensile experiment process, the structure is simple, the size is small, and the experiment precision is high.

Description

technical field [0001] The invention relates to a micro-CT in-situ tension testing device. Background technique [0002] In situ tensile micro-CT is an analytical method used to measure complex environmental materials such as molten salt reactor materials. When using this method to analyze solid materials, especially nanostructures in composite materials, it is often necessary to stress-load and heat the sample at the same time, and add different atmospheres. In order to ensure the temperature and reaction atmosphere required for the experiment, it is necessary to provide different temperatures and Atmospheric conditions. For example, in the study of the mechanics and failure behavior of composite materials under the action of molten salt, the service conditions of some materials under higher temperature and different pressure environments, etc. While heating and pressurizing the samples, CT scanning experiments can also be carried out to study the mechanics and failure me...

AI Technical Summary

Problems solved by technology

[0003] However, the existing in-situ devices for tensile experiments are generally used for tensile, compression, shear, bending and other tests, and are not suitable for samples exposed to high temperature and different pressure environments during the experiment

Even if some existing in-situ tensile testing devices can provide temperature and atmosphere adjustment functions, their control accuracy and control range are often difficult to meet the requirements

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