Abstract
Ultrasonic de-icing is a promising method to de-ice structures by using lightweight and simple transducers, with the advantage of low power consumption. A successful ultrasonic de-icing technique requires the understanding of the effects of different parameters on de-icing. This paper presents a thorough parametric study of the ultrasonic de-icing method on a plate with coating. First, the dispersion equations of shear horizontal (SH) and Lamb waves were derived based on the global matrix method. Meanwhile, interface shear concentration coefficients (ISCC) were introduced to represent the ability of ultrasonic de-icing, which was further integrated into Lamb wave and SH waves dispersion curves for the selection of optimal frequencies. Second, a three-layer plate model (host plate-coating-ice) was used to demonstrate the effect of different parameters of coating and the thickness of ice on ultrasonic de-icing. The theoretical model provided the design principle of coating and ultrasonic parameters required for efficient de-icing. Finally, an experiment was conducted on an ultrasonic de-icing platform to validate the proposed ultrasonic de-icing method. In this process, material parameters including the Young’s modulus, thickness of coating, and thickness of the ice layer were analyzed. The trends of power consumption and optimal frequency of experiments are in good agreement with the analytical calculated results.
Highlights
For structures in cold environments, freezing is a critical issue, that must be solved in order to guarantee the workability of structures
It should be noted that GUIGUW cannot compute the stress wave structure and power flow with the current version, which is required for calculating interface shear concentration coefficients (ISCC)
It should noted that GUIGUW cannot compute the stress wave structure and power flow with the current version, which is required for calculating ISCC
Summary
For structures in cold environments, freezing is a critical issue, that must be solved in order to guarantee the workability of structures. The accumulation of ice on structures would detrimentally affect performance and reliability. Ice accretions have serious impacts on performance of offshore platforms, marine vessels [1,2,3,4], aircraft [5,6], wind turbine blades [7,8], power line [9] etc. Several thermal and mechanical methods associated with de-icing have been developed, including pneumatic, electro-thermal, electro-impulse, vibratory, etc. Take the widely used thermal de-icing methods for aircraft as an example, the electrothermal de-icing system is heavily up to 162 lbs. Take the widely used thermal de-icing methods for aircraft as an example, the electrothermal de-icing system is heavily up to 162 lbs. and requires power
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