Auxiliary device for fatigue testing machine

Abstract

The invention discloses an auxiliary device for a fatigue testing machine. The auxiliary device comprises a bottom water tank, and a water suction pipe, and one end of the water suction pipe is connected with a water pump; the auxiliary device further comprises a top water tank, and the other end of the water suction pipe is positioned in the top water tank; the auxiliary device further comprises a water return pipe, one end of the water return pipe is connected with the top of the top water tank, and the other end of the water return pipe is located in the bottom water tank; the auxiliary device further comprises an irrigation water pipe, one end of the irrigation water pipe is connected with the bottom of the top water tank, and a plurality of irrigation heads communicated with the irrigation water pipe are arranged on the irrigation water pipe; and the auxiliary device further comprises an installation assembly which is installed on the lower chuck of the testing machine, the bottom end of a to-be-tested piece is installed on the installation assembly, and the top end of the to-be-tested piece is connected with the upper chuck of the testing machine. Seawater flows through the to-be-tested piece, the fatigue testing machine is prevented from being rusted during fatigue performance testing, the application range is wide, and field limitation is avoided.

Description

technical field [0001] The invention relates to an auxiliary device for a fatigue testing machine. Background technique [0002] All kinds of structures in the marine environment will be subjected to repeated wind and wave loads, and fatigue performance is often the key factor controlling the life of structures in the ocean. Therefore, it is often necessary to evaluate the fatigue performance of structural components of structures. Fatigue test has always been an important means to detect the fatigue performance of structures and components. Generally, the structure or component is placed on a fatigue testing machine, and repeated fatigue loads are applied to the component or structure through the fatigue testing machine. Most of the existing fatigue tests can only be carried out in the air environment, and cannot consider the influence of water currents that are ubiquitous in the marine environment. [0003] Studies have shown that for steel structures, seawater may enter ...

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Problems solved by technology

[0004] However, in the existing research, due to concerns about the corrosion of the fatigue testing machine itself and the limitation of the test site, the influence of seawater cannot be considered in the fatigue test of the structure or component, which may lead to overestimation of the structure and component in the marine environment. Fatigue performance, leading to insufficiency in design calculations, and in severe cases, unexpected failure of the structure

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