Alliance for Sustainable Energy, LLC

Robert Thresher

Jason Cotrell

Alan Wright

Yi-Hsiang Yu

Nathan Tom

Michael Lawson

Jay Tillay Johnson

Scott Hughes

Scott Lambert

Described herein are wave energy conversion systems including actuated geometry components. An example system may include at least one body portion configured to transfer wave energy to a power take off device, and at least one actuated geometry component that is connected to the at least one body portion, the at least one actuated geometry component operable to modify a geometric profile of the system.

Wave energy conversion incorporating actuated geometry

An apparatus () for fatigue testing elongate test articles () including wind turbine blades through forced or resonant excitation of the base () of the test articles (). The apparatus () includes a testing platform or foundation (). A blade support () is provided for retaining or supporting a base () of an elongate test article (), and the blade support () is pivotally mounted on the testing platform () with at least two degrees of freedom of motion relative to the testing platform (). An excitation input assembly () is interconnected with the blade support () and includes first and second actuators () that act to concurrently apply forces or loads to the blade support (). The actuator forces are cyclically applied in first and second transverse directions. The test article () responds to shaking of its base () by oscillating in two, transverse directions ().

Wind turbine blade testing system using base excitation

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Golden, CO, United States of America

Robert Thresher