Development of smart wind turbine blades

Supeni, E. E. and Epaarachchi, J. A. and Islam, M. M. and Lau, K. T. (2012) Development of smart wind turbine blades. In: 8th Asian-Australasian Conference on Composite Materials (ACCM 2012): Composites: Enabling Tomorrow's Industry Today , 6-8 Nov 2012, Kuala Lumpur, Malaysia.

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Abstract

Recent years have witnessed the use of wind as renewable energy source. This rapid growth has tremendously developed since the growing concern of the environmental pollution and also oil crisis. The size of the blades is a major factor in the power output of a wind turbine and as a result, blade length has tremendously increased in line with the growth of the wind turbine industry. However, the rapid expansion in use and size of wind turbines contribute its problems. Among the problem is maintaining the shape control at high load especially which substantially affect the aerodynamic efficiency of the airfoil of the wind blade. The structure of the wind blade is made of glass fibre reinforced plastic (GFRP) which is not only has high strength-to-weight ratio and also good rigidity. Nevertheless, it can't resist the shape upon operational air loading such as deflection from root to tip. The higher stress levels acting on the blade root will also contributes to the accumulation of fatigue damages and consequently catastrophic failures. This study intends to experimentally investigate the application of smart materials in composite wind turbine blades like structures. Nickel-Titanium (NiTi) wire which is classified as Shape Memory Alloy (SMA) has been embedded in the core of a graded beam to alleviate the load at the fixed. This corrective action relieves the high stress concentration at blade root and as a consequence minimizes fatigue damages to the blade. The study closely look at the heat load needs to be applied, the transformation temperatures, the recovery stress of NiTi. The recovery stress is very important in structural application for SMA as the recovered stress could be purposely for actuation and damping control in composite blades. A mathematical model has been developed on commercial finite element software ABAQUS for comparison.


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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Refereed: Yes
Item Status: Live Archive
Additional Information: Copyright © 2012 Asian-Australasian Association for Composite Materials (AACM). No parts of this document may be reproduced, stored in a retrieval system or transmitted in any form or by any means (electronic, mechanical, photocopying, recording or otherwise) without the permission of the copyright owner. Any request to reproduce any part of the proceedings should be directed to the publisher.
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - Department of Mechanical and Mechatronic Engineering
Date Deposited: 08 May 2013 04:54
Last Modified: 27 Oct 2014 04:24
Uncontrolled Keywords: SMA; FEA; NiTi; smart structure; transformation temperature
Fields of Research : 09 Engineering > 0912 Materials Engineering > 091202 Composite and Hybrid Materials
09 Engineering > 0906 Electrical and Electronic Engineering > 090608 Renewable Power and Energy Systems Engineering (excl. Solar Cells)
09 Engineering > 0912 Materials Engineering > 091205 Functional Materials
Socio-Economic Objective: B Economic Development > 85 Energy > 8505 Renewable Energy > 850509 Wind Energy
URI: http://eprints.usq.edu.au/id/eprint/22295

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