Manufacturing and Flexural Characterization of Infusion-Reacted Thermoplastic Wind Turbine Blade Subcomponents
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Reactive thermoplastics are advantageous for wind turbine blades because they are recyclable at end of life, have reduced manufacturing costs, and enable thermal joining and shaping. However, there are challenges with manufacturing wind components from these new materials. This work outlines the development of manufacturing processes for a thick glass fiber–reinforced acrylic thermoplastic resin wind turbine blade spar cap, with consideration given to effects of the exothermic curing reaction on thick composite parts. Comparative elastic properties of these infusible thermoplastic materials with epoxy thermoset materials, as well as thermoplastic coupon components, are also included. Based on the results of this study it is concluded that the thermoplastic resin system is a viable candidate for the manufacturing of wind turbine blades using vacuum-assisted resin transfer molding. Significant gains in energy savings are realized avoiding heated molds, ability for recycling, and providing an opportunity for utilizing thermal welding.
KeywordsThermoplastic resin Elasticity Mechanical testing Vacuum infusion
This material is based on work supported by the U.S. Department of Energy’s (DOE’s) Office of Energy Efficiency and Renewable Energy (EERE) under the support of Task 4.2 of the Institute for Advanced Composites Manufacturing Innovation (IACMI), Award Number DE-EE006926 managed by John Winkel from DOE and John Unser from IACMI. Academic and national laboratory partners for this project are Derek Berry and David Snowberg (NREL), Aaron Stebner (Colorado School of Mines), Nathan Sharpe (Purdue), Dayakar Penumadu and Stephen Young (University of Tennessee), and Douglas Adams (Vanderbilt). The industrial consortium for this project was led by Dana Swan (Arkema), Mingfu Zhang (Johns Manville), and Stephen Nolet (TPI Composites). The views and opinions of authors expressed in this paper or referenced documents do not necessarily state or reflect those of the U.S. government or the identified collaborating partners. Authors acknowledge that important insight and ideas were obtained from academic and industrial collaborators during the project activities who are not being formally acknowledged in this manuscript as co-authors. Materials supplied, and manufacturing methods developed by the industrial collaborators are gratefully acknowledged.
The Alliance for Sustainable Energy, LLC (Alliance) is the manager and operator of the National Renewable Energy Laboratory (NREL). NREL is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy. This work was authored by the Alliance and supported by the U. S. Department of Energy under Contract No. DE-AC36-08GO28308. Funding was provided by the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy, Wind Energy Technologies Office. The views expressed in the article do not necessarily represent the views of the U.S. Department of Energy or the U.S. government. The U.S. government retains, and the publisher, by accepting the article for publication, acknowledges that the U.S. government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this work, or allow others to do so, for U.S. government purposes.
- 1.Wind Vision: A New Era for Wind Power in the United States. 2015: Office of Energy Efficiency & Renewable EnergyGoogle Scholar
- 3.Energy, O.o.E.E.a.R. Advanced Blade Manufacturing. [cited 2017 February 7]; Available from: https://energy.gov/eere/wind/advanced-blade-manufacturing. Accessed Jan 2018
- 5.IACMI. The Composites Institute Facilitates Thermoplastic Composite Development for Wind Turbine Blades through Innovative Project. 2017; Available from: http://iacmi.org/2017/01/17/iacmi-composites-institute-facilitates-thermoplastic-composite-development-wind-turbine-blades-innovative-project. Accessed Sept 2017
- 6.Cousins, D.S., et al.: Recycling glass fiber thermoplastic composites from wind turbine blades. J. Clean. Prod. (2018) Submission number JCLEPRO-D-18-07661 Google Scholar
- 8.Rijswijk, K.V., et al.: Sustainable Vacuum-Infused Thermoplastic Composites for MW-Size Wind Turbine Blades—Preliminary Design and Manufacturing Issues. J. Solar. Energy Eng. 127 (2005)Google Scholar
- 10.Bersee, H.E.N. and S.D. Noi. Fast processing and material challenges. in Wind Turbine Blade Manufacture. 2016. Düsseldorf, GermanyGoogle Scholar
- 11.Branner, K., P. Berring, and P.U. Haselbach, Subcomponent testing of trailing edge panels in wind turbine blades in ECCM17 - 17th European Conference on Composite Materials. 2016: Munich, GermanyGoogle Scholar
- 16.Calahorra, F.L., Thickness Effect in Composite Laminates in Static and Fatigue Loading. 2017, Technische Universiteit DelftGoogle Scholar
- 17.Jackson, K.E., Workshop on Scaling Effects in Composite Materials and Structures. 1994, NASA Conference PublicationGoogle Scholar
- 19.Lowe, G.A. and N. Satterly, CHAPTER 9: Comparison of Coupon and Spar Tests. 1996. p. 153Google Scholar
- 23.Murray, R.E., et al. Manufacturing a 9-Meter Thermoplastic Composite Wind Turbine Blade. In ASC 32nd Technical Conference. 2017. Purdue University, USAGoogle Scholar
- 24.International, A., Standard Test Methods for Flexural Properties of Unreinforced and Reinforced Plastics and Electrical Insulating Materials D 790. 2002Google Scholar
- 25.Airtech. Dahltexx® SP-2 Air permeable resin barrier material. 2018 [cited 2018; Available from: https://catalogue.airtech.lu/product.php?product_id=1674&lang=EN. Accessed Oct 2018
- 26.NASA, Measurement Uncertainty Analysis Principles and Methods: NASA Measurement Quality Assurance Handbook – ANNEX 3. 2010Google Scholar
- 27.Commission, I.E., Technical Specification IEC TS 61400–23, in Wind turbine generator systems – Part 23: Full-scale structural testing of rotor blades. 2001Google Scholar
- 28.Inc, T., Trilion GOM Software User Guide. 2017Google Scholar