INNOVATIVE HEALTH MONITORING OF WIND TURBINE BLADE USING WIRELESS SENSOR NETWORK BASED ACTIVE SENSING APPROACH
Ft is important to detect damage before catastrophic failure occurs in wind turbine blades. In this paper,a piezoceramic-based wireless sensor network (WSN) system was developed for health monitoring of wind turbine blades. Using embedded distributed piezoceramic patches,an active-sensing wireless sensor network was developed. 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.
Wireless sensor network Structural health monitoring Wind turbine blade
Gang-Bing Song Hui Li Bosko Gajic Wen-Song Zhou Peng Chen Hai-Chang Gu
Department of Mechanical Engineering,University of Houston,Houston,TX 77004,USA School of Civil Engineering Harbin Institute of Technology,Harbin 150000,P.R. China School of Civil Engineering Harbin Institute of Technology,Harbin 150000,P.R.China
国际会议
The Eleventh International Symposium on Structural Engineering(第十一届结构工程国际研讨会)
广州
英文
825-833
2010-12-01（万方平台首次上网日期，不代表论文的发表时间）