광섬유 센서를 이용한 풍력발전기 날개의 모드 해석

Dynamic behavior of a small wind turbine blade has been analyzed experimentally. Arrays of Fiber Bragg Grating (FBG) sensors attached along the blade were used to measure strains of the blade surface. Impact test was performed to estimate resonance frequencies of the fundamental and higher modes of the cantilever blade system developed for this study. The results were compared with the results from conventional strain gages. Strains obtained from the FBG sensor array were employed to estimate mode shapes of the blade.