Real-time chemical corrosion device and method for impact testing

Abstract

The invention discloses a real-time chemical corrosion device and method for impact testing, and relates to the technical field of corrosion test equipment. A water tank in the corrosion device is symmetrically provided with two accommodating cavities for placing an incident rod and a transmission rod respectively required for an impact test. After the sample reaches the designed corrosion time, the water tank is entirely moved to a Hopkinson rod system platform, the incident rod and the transmission rod are inserted into the corresponding accommodating cavities to make close contact with a sleeve and abut the sample, and then an impact test is carried out. The invention discloses the real-time chemical corrosion device and method for impact testing, simulates the corrosion of a sample inan aqueous solution environment, and can realize seamless connection between corrosion treatment and dynamic impact, ensure that the sample is always placed in the corrosion solution during the movement and impact test process to reduce the reaction volatilization of the aqueous solution and the air in the pores of the sample, and maintain the fluidity and concentration of the corrosion solution to improve the accuracy of the test results and fully meet the engineering reality.

Description

technical field [0001] The invention relates to the technical field of corrosion test equipment, in particular to a real-time chemical corrosion device and method for the dynamic impact test of a Hopkinson pressure bar system. Background technique [0002] Underground rock mass engineering often involves a large amount of excavation construction. Explosion / mechanical impact during excavation construction will cause dynamic disturbance and damage to the surrounding rock mass that the project intends to retain, resulting in deterioration of the physical and mechanical properties of the surrounding rock mass. Therefore, the dynamic damage of surrounding rock caused by impact disturbance is a non-negligible threat to the long-term safety and stability of underground engineering. [0003] In addition, the mechanical properties of rock are not only related to its own structure and stress conditions, but also closely related to the environment in which the rock is located. Aqueous...

AI Technical Summary

Problems solved by technology

However, this problem is ignored in the current laboratory test preparation methods: after the sample is placed for the set time, it is taken out, the sample is transported to the laboratory where the Hopkinson rod system is located, and the device is debugged. Takes a long time, sometimes months

In this process, the corroded sample is exposed to the air, and the aqueous solution in the pores of the sample will react with the air and then volatilize, which will reduce the accuracy of the test and is not in line with engineering practice.

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