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Article

A Decommissioned Wind Blade as a Second-Life Construction Material for a Transmission Pole

1
School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA
2
School of Architecture, Georgia Institute of Technology, Atlanta, GA 30332, USA
3
Department of Civil Engineering and Construction, Georgia Southern University, Statesboro, GA 30460, USA
*
Author to whom correspondence should be addressed.
Constr. Mater. 2021, 1(2), 95-104; https://doi.org/10.3390/constrmater1020007
Received: 29 April 2021 / Revised: 21 June 2021 / Accepted: 1 July 2021 / Published: 7 July 2021
This paper demonstrates the concept of adaptive repurposing of a portion of a decommissioned Clipper C96 wind turbine blade as a pole in a power transmission line application. The current research program is aimed at creating a path towards sustainable repurposing of wind turbine blades after they are removed from service. The present work includes modelling and analysis of expected load cases as prescribed in ASCE 74 and NESC using simplified boundary conditions for tangent pole applications. Load cases involving extreme wind, concurrent ice and wind, extreme ice, differential ice, broken conductor, and broken shield have been analyzed and governing load cases for bending, shear, and torsion have been examined. Relative stiffnesses of different parts forming the wind blade’s cross section (i.e., shell, web, and spar cap) are determined. The corresponding stresses associated with each part under the governing loads are compared to allowable strength values which are determined from composite laminate theory and modelling of the known laminate structure of the E-Glass FRP material. Stresses and deflections obtained are compared with governing reliability-based design criteria and code requirements. The results of the structural analysis indicate that the wind blade can resist the expected loads with reasonable safety factors and that the expected deflections are within permissible limits. Recommendations are provided for detailing and modification of the wind blade for a power pole application in which crossarm and davit connections are highlighted, and foundation details are emphasized. View Full-Text
Keywords: wind blades; composites; GFRP; power transmission line; repurposing wind blades; composites; GFRP; power transmission line; repurposing
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MDPI and ACS Style

Alshannaq, A.A.; Bank, L.C.; Scott, D.W.; Gentry, R. A Decommissioned Wind Blade as a Second-Life Construction Material for a Transmission Pole. Constr. Mater. 2021, 1, 95-104. https://doi.org/10.3390/constrmater1020007

AMA Style

Alshannaq AA, Bank LC, Scott DW, Gentry R. A Decommissioned Wind Blade as a Second-Life Construction Material for a Transmission Pole. Construction Materials. 2021; 1(2):95-104. https://doi.org/10.3390/constrmater1020007

Chicago/Turabian Style

Alshannaq, Ammar A., Lawrence C. Bank, David W. Scott, and Russell Gentry. 2021. "A Decommissioned Wind Blade as a Second-Life Construction Material for a Transmission Pole" Construction Materials 1, no. 2: 95-104. https://doi.org/10.3390/constrmater1020007

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