Control device for providing simulated marine environment for corrosion fatigue test

Abstract

The invention belongs to the field of simulation of marine environment, in particular to a control device for providing a simulated marine environment for a corrosion fatigue test. The defects of time and labor waste, inaccurate control and the like in the prior art are overcome, and the control device is used for corrosion fatigue tests of a simulated tidal range area, a flowing seawater area, a sea splashing area and other environments. The device is provided with a control system and an environment simulation system, wherein a core of the control system adopts a programmable logic controller; and the environment simulation system is provided with an environmental cabinet, and an artificial seawater circulation loop, a compressed air channel and a hot air channel which are respectively connected with the environmental cabinet. The control system can perform programmable control on artificial seawater cycle interval contacted with tested samples and alternate wetting and drying time to the precision of a second; and the environment simulation system can simulate environmental modes of the seawater flowing area, the tidal range area and a spindrift splashing area. By matching with a fatigue test program, the device can realize the corrosion fatigue tests of materials under combination of any environmental spectrum and loading spectrum in the seawater flowing area, the tidal range area and a spindrift splashing area.

Description

technical field [0001] The invention belongs to the simulation field of the marine environment, in particular to a control device for simulating the marine environment for corrosion fatigue tests. Background technique [0002] Marine steel structures will experience corrosion fatigue under the effects of long-term immersion in seawater, sea wind, waves, currents, sea ice, and earthquakes, which will lead to a decline in the overall structural resistance, seriously affecting the service safety of marine steel structures, and even leading to major vicious accidents, resulting in Huge economic losses, casualties, environmental pollution and waste of resources. Corrosion fatigue safety evaluation and life prediction of marine steel structures are an effective way to ensure the economical, safe and long-life operation of marine engineering facilities and avoid major vicious accidents, and are the basis for establishing durability life design, construction and safe service standar...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a control device for simulating marine environment for corrosion fatigue test, so as to realize the corrosion fatigue test in simulated marine environment in the laboratory, and solve the shortcomings of time-consuming, laborious and inaccurate control in the prior art , used to simulate corrosion fatigue tests in environments such as tidal range areas, flowing sea water areas, and ocean splash areas

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