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Damage Detection Method of Wind Turbine Blade Using Acoustic Emission Signal Mapping  

Han, Byeong-Hee (Center for Safety Measurement, Korea Research Institute of Standards and Science)
Yoon, Dong-Jin (Center for Safety Measurement, Korea Research Institute of Standards and Science)
Publication Information
Abstract
Acoustic emission(AE) has emerged as a powerful nondestructive tool to detect any further growth or expansion of preexisting defects or to characterize failure mechanisms. Recently, this kind of technique, that is an in-situ monitoring of inside damages of materials or structures, becomes increasingly popular for monitoring the integrity of large structures like a huge wind turbine blade. Therefore, it is required to find a symptom of damage propagation before catastrophic failure through a continuous monitoring. In this study, a new damage location method has been proposed by using signal mapping algorithm, and an experimental verification is conducted by using small wind turbine blade specimen; a part of 750 kW real blade. The results show that this new signal mapping method has high advantages such as a flexibility for sensor location, improved accuracy, high detectability. The newly proposed method was compared with traditional AE source location method based on arrival time difference.
Keywords
Acoustic Emission; Wind Turbine Blade; Damage Location; Nondestructive Testing; Fiber Reinforced Plastic;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
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