Multifunctional corrosion ultrahigh-cycle composite fatigue test device

A fatigue test, ultra-high cycle technology, used in measuring devices, weather resistance/light resistance/corrosion resistance, test wear resistance, etc., can solve the problem of single, no salt spray environment and liquid environment, direct and free switching of test devices, etc. , to achieve the effect of good atomization effect

Inactive Publication Date: 2020-03-17
BEIHANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the existing corrosive environment chambers used in ultrasonic fatigue testing machines can only realize the control of a single liquid corrosive environment, and there is no test device that can directly switch freely between the salt spray environment and the liquid environment

Method used

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  • Multifunctional corrosion ultrahigh-cycle composite fatigue test device
  • Multifunctional corrosion ultrahigh-cycle composite fatigue test device

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Embodiment Construction

[0019] The following examples will describe the present invention in more detail, so that those skilled in the art can better understand the advantages and characteristics of the present invention.

[0020] see figure 1 , a multi-functional corrosion ultra-high cycle composite fatigue test device, including a liquid storage tank 1, a liquid outlet valve 2, a lower liquid outlet pipe 3, an upper liquid outlet pipe 4, an environmental chamber body 5, a fatigue sample 6, an ultrasonic fatigue Test device 7, nozzle 8, air inlet controller 9, air inlet pipe 10, air compressor 11, liquid inlet pipe 12, liquid inlet controller 13, water pump 14, the environment box body 5 passes through the lower liquid outlet pipe 3, the upper outlet The liquid pipe 4 is connected with the liquid storage tank 1 , the nozzle 8 is fixed on the side wall of the environmental box 5 , connected with the water pump 14 through the liquid inlet pipe 12 , and connected with the air compressor 11 through the ...

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Abstract

The invention provides a multifunctional corrosion ultrahigh-cycle composite fatigue test device, thereby realizing metal material corrosion ultrasonic composite fatigue performance testing with adjustable medium state, controllable temperature and controllable flux. A corrosion environment box is arranged; and a box body of the environment box is connected with a water pump and an air compressor.The fatigue environment is controlled to be in a liquid corrosion and salt spray corrosion state by changing the connection mode of the air compressor, the water pump and the box body of the environment box. The temperature of a corrosive medium in the environment box body is set through a temperature control device; the flow velocity of the corrosive medium is controlled by a liquid inlet controller connected with the environment box body through the water pump; and the gas flow velocity is controlled through a gas inlet controller. An extension rod fixes a fatigue sample and is arranged inthe environment box; and the water pump drives liquid in the environment box to flow to simulate a real corrosion environment state.

Description

technical field [0001] The invention relates to the field of ultra-long-life fatigue performance testing of metal materials, in particular to a multi-functional corrosion ultra-high cycle composite fatigue test device. Background technique [0002] Corrosion fatigue is a failure mode in which materials are damaged under the combined action of alternating loads and corrosive media. It is widely found in harsh working environments such as petrochemical, marine operations, and gas turbine power. The essence of corrosion fatigue is the result of the synergistic effect of electrochemistry and mechanics, which is far greater than the damage caused by the alternating load and corrosive environment alone, and is a very serious failure mode. The fatigue strength of components in a corrosive environment is greatly reduced, fatigue cracks are easily generated, and the crack growth rate is greatly increased, thereby reducing the service life of materials, parts or equipment. Structural...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/56G01N17/02
CPCG01N3/56G01N17/02G01N2203/024
Inventor 赵子华孟扬王泽民张峥
Owner BEIHANG UNIV
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