Review of morphing concepts and materials for wind turbine blade applications
Article first published online: 24 FEB 2012
Copyright © 2012 John Wiley & Sons, Ltd.
Volume 16, Issue 2, pages 283–307, March 2013
How to Cite
Lachenal, X., Daynes, S. and Weaver, P. M. (2013), Review of morphing concepts and materials for wind turbine blade applications. Wind Energ., 16: 283–307. doi: 10.1002/we.531
- Issue published online: 12 MAR 2013
- Article first published online: 24 FEB 2012
- Manuscript Accepted: 14 SEP 2011
- Manuscript Revised: 9 SEP 2011
- Manuscript Received: 18 FEB 2011
- smart structures;
- load alleviation;
- morphing structures;
- shape adaptation
With increasing size of wind turbines, new approaches to load control are required to reduce the stresses in blades. Experimental and numerical studies in the fields of helicopter and wind turbine blade research have shown the potential of shape morphing in reducing blade loads. However, because of the large size of modern wind turbine blades, more similarities can be found with wing morphing research than with helicopter blades. Morphing technologies are currently receiving significant interest from the wind turbine community because of their potential high aerodynamic efficiency, simple construction and low weight. However, for actuator forces to be kept low, a compliant structure is needed. This is in apparent contradiction to the requirement for the blade to be load carrying and stiff. This highlights the key challenge for morphing structures in replacing the stiff and strong design of current blades with more compliant structures. Although not comprehensive, this review gives a concise list of the most relevant concepts for morphing structures and materials that achieve compliant shape adaptation for wind turbine blades.Copyright © 2012 John Wiley & Sons, Ltd.