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Water Level Sensing in a Steel Vessel Using A0 and Quasi-Scholte Waves
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نویسنده
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guo p. ,deng b. ,lan x. ,zhang k. ,li h. ,tian z. ,xu h.
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منبع
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journal of sensors - 2017 - دوره : 2017 - شماره : 0
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چکیده
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This paper presents a water level sensing method using guided waves of a0 and quasi-scholte modes. theoretical,numerical,and experimental studies are performed to investigate the properties of both the a0 and quasi-scholte modes. the comparative study of dispersion curves reveals that the plate with one side in water supports a quasi-scholte mode besides lamb modes. in addition,group velocities of a0 and quasi-scholte modes are different. it is also found that the low-frequency a0 mode propagating in a free plate can convert to the quasi-scholte mode when the plate has one side in water. based on the velocity difference and mode conversion,a water level sensing method is developed. for the proof of concept,a laboratory experiment using a pitch-catch configuration with two piezoelectric transducers is designed for sensing water level in a steel vessel. the experimental results show that the travelling time between the two transducers linearly increases with the increase of water level and agree well with the theoretical predictions. © 2017 peng guo et al.
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آدرس
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key lab. of condition monitoring and control for power plant equipment of ministry of education,school of energy power and mechanical engineering,north china electric power university,beijing, China, key lab. of condition monitoring and control for power plant equipment of ministry of education,school of energy power and mechanical engineering,north china electric power university,beijing, China, key lab. of condition monitoring and control for power plant equipment of ministry of education,school of energy power and mechanical engineering,north china electric power university,beijing, China, key lab. of condition monitoring and control for power plant equipment of ministry of education,school of energy power and mechanical engineering,north china electric power university,beijing, China, key lab. of condition monitoring and control for power plant equipment of ministry of education,school of energy power and mechanical engineering,north china electric power university,beijing, China, department of mechanical engineering and material science,duke university,durham,nc, United States, key lab. of condition monitoring and control for power plant equipment of ministry of education,school of energy power and mechanical engineering,north china electric power university,beijing, China
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Authors
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