| METALS AND METAL MATRIX COMPOSITES |
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| Research on Sand Erosion Wear of Wind Turbine Blade Coating in Operation State |
| WANG Jian1, DU Guozheng1, ZHANG Yong1, WU Zheng2, GAO Jing3, SU Lide1
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1 College of Mechanical and Electrical Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China
2 Vehicle Department of China Railway Hohhot Group Co., Ltd., Hohhot 010053, China
3 Inner Mongolia Institute of Mechanical Power, Hohhot 010010, China |
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Abstract The erosion process of wind turbine blade coating in real operation state was simulated, based on the erosion wear test of 1.5 MW wind turbine blade miniature model in operation state. The interaction mode and erosion mechanism between wind turbine blade and sand particles under running state were clarified, by studying the influence of different impeller speeds, blade zones and sand particle sizes on the erosion amount of blade coating, analyzing the micro-morphology of surface at the leading edge and near the trailing edge of the blade tip. In operation state, the erosion process of the wind turbine blade coating was characterized by surface voids, erosive pits, erosive pits combined, small coating peeling and large coating peeling. The erosion process has high similarity, although the erosion amount of blade coating under different impeller speed is not same, the whole process can be divided into wear gestation period, fast wear period and slow wear period. And the erosion amount of the blade coating increases continuously, as the distance between the erosion zones and the blade root increasing. The general trend of erosion process is similar when different size sand particles impact blade coating, but the smaller the particle size, the slower the erosion process develops. The relative motion of sand erosion leading edge can be approximately vertical impact, and the erosion characteristics are mainly near circular erosive pits and coating peeling under transverse crack propagation. The erosion degree is lower than that of the leading edge when the impact is near the trailing edge, and the erosion forms are mainly concave indentation and scaly flake off.
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Published: 23 February 2021
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| Fund:This work was financially supported by the Postdoctoral Science Foundation of China (2018M643777XB), Grassland Talents Modern Agriculture and Animal Husbandry Engineering New Technology R&D and Application Innovation Talent Team (〔2018〕19), Inner Mongolia Agricultural University Double First-Class Subject Innovation Team Construction Talent Cultivation Project (NDSC2018-08), Inner Mongolia Agricultural University High-Level Talent Introduction Scientific Research Start Project (NDGCC2016-03). |
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Corresponding Authors:
yongz@imau.edu.cn
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About author:: Jian Wang received his Ph.D. degree in mechanical engineering from Beijing Institute of Technology in January 2016. From June 2016, he worked in College of Mechanical and Electrical Engineering, Inner Mongolia Agricultural University, focusing on the research of damage detection of wind turbine blade.
Yong Zhang received his Ph.D. degree in mechanical engineering from Xi'an Jiaotong University in July 2009. He is currently a professor and doctoral supervisor, focusing on the research of key technologies and equipment for digital agriculture and animal husbandry, mechatronics technology. He has published more than 20 journal papers, applied 10 national invention patents. |
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2021, Vol. 35 
