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Acta Aeronautica et Astronautica Sinica ›› 2024, Vol. 45 ›› Issue (16): 129293-129293.doi: 10.7527/S1000-6893.2023.29293

• Fluid Mechanics and Flight Mechanics • Previous Articles     Next Articles

Ice accumulation identification and localization method based on ultrasonic guided waves

Yanxin ZHANG1,2, Hongjian ZHANG1,2, Jianjun XIONG1, Zhao ZHAO1, Lin RAN1, Xian YI1,2()   

  1. 1.Key Laboratory of Icing and Anti/De-icing,China Aerodynamics Research and Development Center,Mianyang  621000,China
    2.State Key Laboratory of Aerodynamics,China Aerodynamics Research and Development Center,Mianyang  621000,China
  • Received:2023-07-10 Revised:2023-08-03 Accepted:2023-08-07 Online:2024-08-25 Published:2023-08-11
  • Contact: Xian YI E-mail:yixian_2000@163.com
  • Supported by:
    National Major Science and Technology Project (J2019-Ⅲ-0010-0054);National Natural Science Foundation of China (Key Program)(12132019);China Postdoctoral Science Foundation(2021MD703966)

Abstract:

To achieve regionalized quantitative detection of aircraft icing, we propose a method for ice layer localization and quantitative identification based on the Lamb waves. Firstly, a wave dynamic simulation model of piezoelectric coupling is established. The propagation characteristics and mode conversion process of the Lamb waves in the aluminum plate and ice layers are analyzed with the three-dimensional finite element method. The S0/B1 mode is selected as the icing monitoring mode, and a signal analysis method based on wavelet transform is developed to extract the time of delay of S0/B1 mode waves. Furthermore, the influence of different ice layer structural sizes on the Lamb wave signals is analyzed. It is found that the time of delay ratio of the B1 mode waves linearly increases with the increase in the ice layer length (ice accumulation in the direction of wave propagation). The ice layer width (ice accumulation in the direction perpendicular to the wave propagation) has a range of influence on the time delay of the B1 mode waves. For the range of ice layer width not exceeding 40 mm, the time of delay ratio has a linear relationship with the width of ice. The ice layer thickness shows an approximate positive correlation with the time of delay ratio of the B1 mode waves, and a good linear relationship exists between them within an ice layer thickness of 1.5 mm. Finally, a simulation model of the Lamb waves piezoelectric array is established, and a modified reconstruction algorithm for the probabilistic inspection is proposed. The ice accumulation level is characterized by the time of delay to verify the feasibility of ice layer localization imaging and quantitative identification in the detection area and improve the ability to rapidly evaluate icing online based on ultrasonic guided waves, laying the foundation for icing quantitative detection via ultrasonic guided waves.

Key words: ultrasonic guided waves, Lamb waves, ice detection, ice accumulation, localization and imaging

CLC Number: