Structural Integrity through Aerodynamic Analysis and Structural Test for Small Wind Turbine Composite Blade

Abstract

This paper deals with the aerodynamic analysis and structural test under estimated loading condition for small composite blade, which is utilized in dual rotor wind turbine system. Firstly, the front and rear blades of dual rotor wind turbine system were modeled using reverse engineering method. And using finite volume method, the aerodynamic forces were analyzed at the rated and cutout wind speed to identify the pressure distribution on blades. And then, the full scale structural tests were conducted according to load and strength based methodology in IEC 61400-2 to identify the structural integrity of composite blade.

Structural Integrity of Small Wind Turbine Composite Blade Using Structural Test and Finite Element Analysis

“…3.1.1 굽힘 시험 선행 연구(11) 에서 산출된 모멘트를 이용하여 안 전계수를 적용한 최대 모멘트를 결정하고 하중부 하지점의 길이를 고려한 시험 하중을 산출하였다. 산출된 하중을 이용하여 블레이드에 파손이 발생 할 때까지 하중을 가하는 굽힘 시험을 통해 최대 파손하중을 획득하였다(Table 2 참조).Fig.…”