풍력 발전 블레이드 Trailing Edge 부에서의 손상 감지 기법

In this Study, in order to monitor the operational safety in wind turbine blade, damage detection technique was developed. The damage occurred in the blade was detected with measurement of local strain which was sensed with PVDF strain sensor. The blade components including trailing edge were manufactured. To detect the local damage, lots of strain gages and PVDF film sensors were mounted on the shear web and skin of the blade component. From the test, optimal location for detecting the occurrence of damage with static loading was investigated and sensitivity of the PVDF sensors location to the damage was examined. With increasing the applied load, pop-ins were happened. The strain variation of the PVDF sensors was characterized. From this study, PVDF strain sensor was found to be very useful in detecting the damage in wind turbine blade.