풍력터빈 모형구조물을 이용한 풍력타워의 진동기반 건전성 평가

Abstract

In this study, characteristics of dynamic properties (natural frequency and model shape) on a win turbine tower model with damages at various locations were investigated though the indoor experiment by using accelerometers. The modal natural frequency and mode shape of the wind turbine tower model were estimated by FDD technique (Frequency Domain Decomposition Technique) which has been widely used in civil engineering fields. These results were compared with those of FEM model.l frequency and mode shape of the wind turbine tower model were estimated by FDD technique (Frequency Domain Decomposition Technique) which has been widely used in civil engineering fields. These results were compared with those of FEM model.