Base excitation testing system using spring elements to pivotally mount wind turbine blades

摘要: A system (1100) for fatigue testing wind turbine blades (1102) through forced or resonant excitation of the base (1104) a blade (1102). The includes test stand (1112) and restoring spring assembly (1120) mounted on (1112). primary element (1124) that extends outward from to mounting plate (1130) configured receive During testing, supported may be pivotally via (1120). include an input (1140) is interconnected with selectively apply flapwise, edgewise, and/or pitch forces. at least one tuning member (1127) positioned adjacent used tune constant stiffness in directions.