Abstract
The occurrence of excessive fluid sloshing during an earthquake can damage structures used to store fluids and can induce secondary disasters, such as environmental destruction and human casualties, due to discharge of the stored fluids. Thus, to prevent such disasters, it is important to accurately predict the sloshing behavior of liquid storage tanks. Tubular level gauges, which visually show the fluid level of a liquid storage tank, are easy to install and economical compared to other water level gauges. They directly show the fluid level and can be applied for various fluids because they can be constructed with various materials according to the fluid characteristics and the intended use. Therefore, in this study, the shaking table test was conducted to verify the validity of the method for measuring the water level response of the tubular level gauge installed on a liquid storage tank using image signals. In addition, image enhancement methods were applied to distinguish between the float installed in the tubular level gauge and the gray level of the background.
Highlights
With the recent development of different industries, an increasing number of liquid storage facilities are being used in various industrial sites and public facilities, and the importance of facility management is increasing
In this study, the shaking table test was conducted to verify the validity of the method used to measure the water level response of the tubular level gauge installed on a remote liquid storage tank using image signals
21 mask was to the in converted gray level image, acquired using a digital camcorder was converted into an image file (JPEG), which was the original and the image was subjected to histogram transformation
Summary
With the recent development of different industries, an increasing number of liquid storage facilities are being used in various industrial sites and public facilities, and the importance of facility management is increasing. A model water tank was fabricated to analyze the sloshing behavior of rectangular vessels in nuclear power plants under vertical seismic loads, and the shaking table test was conducted after infrared sensors were installed on top of the tank to measure the water level response of the fluid surface [11]. The shaking table test was conducted to classify the resonant sloshing behavior of the liquid in a rectangular water tank and to verify the theoretical model, where the sloshing water level was measured using a wave gauge [12]. In this study, the shaking table test was conducted to verify the validity of the method used to measure the water level response of the tubular level gauge installed on a remote liquid storage tank using image signals
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