Abstract
Icings on moving machinery, such as wind turbines and aircraft wings, degrade their performance and safety. Ultrasonic vibration is considered one of the deicing methods. In this research, simulations and experiments are carried out to explore the effect of ultrasonic vibration on the adhesive characteristic of ice on aluminum alloy plates. Harmonic response analyses are conducted to analyze the changing and distributions of shear stresses at the adhesive interface under different frequencies and sizes of PZT patches. The results show that there is optimum side length and thickness of the PZT patch, as the size of the iced aluminum alloy plate is constant. In these conditions, the shear stresses at the adhesive interface are high. Then, experiments on adhesive torque of ice are carried out to calculate the adhesive shear stresses of ice. The results show that the adhesive force of ice decreases under the excitation of ultrasonic vibration. When the excited frequency is 79 kHz, the adhesive torsional shear stress is 0.014 MPa, which is only 7% of the one with no ultrasonic vibration.
Highlights
IntroductionHumid environments, ice accretion on the surfaces of rotating rotating such as airplane wingsoften andpresents wind turbines, which degrades thei machinery, suchand as airplane wings and wind degrades performance performance safety
In cold and humid environments, ice accretion often presents on the surfaces oIn coldmachinery, and humid environments, ice accretion on the surfaces of rotating rotating such as airplane wingsoften andpresents wind turbines, which degrades thei machinery, suchand as airplane wings and wind degrades performance performance safety
One end of a flange was used to apply torque, and the opposite end was frozen with the iced aluminum alloy plate together before each measurement
Summary
Humid environments, ice accretion on the surfaces of rotating rotating such as airplane wingsoften andpresents wind turbines, which degrades thei machinery, suchand as airplane wings and wind degrades performance performance safety. Surface adhesive characteristic of ice covering on aluminum alloy plates, un of ultrasonic vibration, using simulation and experiment. Studiesthe are adhesive carried out on the effect of ultrasonic variations on the surface research findings, force of the ice under the excitation of ultras adhesive characteristic of ice covering on aluminum alloy plates, under excitations of is measured by a self-developed experimental system, and the adhesive sh ultrasonic vibration, using simulation and experiment. The distribution paper layexcitation the theoretical and are experimental foundations for exploring law of shear stress at the interface between ice and substrate plate is simulated In this way, deicing method in depth. Researchers alternative it alternatively andstress contracts in ultrasonic frequency, which select as thethe deicing parameter for to the mechanical deicing system In this excites iced aluminum alloy plate vibrate and deform.
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