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Wind turbine blade health monitoring with piezoceramic-based wireless sensor network

查看全文 作　　者：Gangbing [1]Song;Hui [2]Li;Bosko [1]Gajic;Wensong [2]Zhou;Peng [2]Chen;Haichang [1]Gu 高影响力作者 机构地区：[1]Department of Mechanical Engineering,University of Houston,Houston,TX 77004,USA;[2]School of Civil Engineering,Harbin Institute of Technology,Harbin 150000,P.R.China高影响力机构 出　　处：《International Journal of Smart and Nano Materials》索引2013年第4卷第3期,共17页高影响力期刊 基　　金：This research was supported in part by a Texas Higher Education Coordinate Board’s Norman Hackerman Advanced Research Program(NHARP)grant(Contract Number 01980);a US National Science Foundation grant(No.0832089);a US Department of Education GAANN fellowship grant. 摘　　要：In this paper,a piezoceramic-based wireless sensor network(WSN)was developed for health monitoring of wind turbine blades with active sensing approach.The WSN system has an access point that coordinates the network and connects to a PC to control the wireless nodes.One wireless node functions as an actuator to excite an embedded piezoceramic patch with desired guided waves.The remaining wireless nodes function as sensors to detect and transmit the wave responses at distributed locations.The damage status inside the blade was evaluated through the analysis of the sensor signals.Based on wavelet packet analysis results,a damage index and a damage matrix were developed to evaluate the damage status at different locations.To verify the effectiveness of the proposed approach,a static loading test and a wind tunnel test were performed in the Laboratory of Joint Wind Tunnel and Wave Flume at Harbin Institute of Technology(HIT),China.Experimental results show that damage in wind turbine blades can be detected and evaluated by the proposed approach. 关 键 词：PIEZOCERAMICS active sensing wireless sensor network structural health monitoring wind turbine blade
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