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Study of Mechanical Response of Wind Turbine Blades Made of Thermosetting and Thermoplastic Resins

Razaghian, Pardis | 2022

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 55620 (45)
  4. University: Sharif University of Technology
  5. Department: Aerospace Engineering
  6. Advisor(s): Abedian, Ali
  7. Abstract:
  8. This project has been carried out to investigate the feasibility of using thermoplastic materials in constructing large wind turbine blades made of composite materials. By proving the similarity of the mechanical behavior of blades made of thermoplastic and thermosetting composite materials, the possibility of using these materials with better recycling capabilities has been studied. By studying different thermosetting and thermoplastic resins and checking the Processing methods and mechanical properties of thermoplastic resins, the materials for blades have been selected. The suitable manufacturing method for producing large blades with dimensions above 30 meters is the vacuum-assisted resin transfer method (VARTM), and the thermoplastic matrices that can be injected are limited. In this project, the anionic reaction of polyamide-6 is used as the target material. Abaqus 2016 version finite element analysis software has been used to model the composite layers of blades, which is a very useful tool for this type of analysis.By comparing the obtained results, it can be concluded that there is no obstacle in constructing wind turbine blades made of thermoplastic materials in terms of mechanical response. Using thermoplastic materials has other benefits in addition to more recycling of composite waste. Such weldability makes it possible to make parts of large blades in smaller parts and install them in the intended place after more accessible transportation. However, attention should be paid to the problems of manufacturing at high temperature, which causes tension and residual strains in the structure, and the sensitivity of polyamide-6 to humidity, which yields its mechanical properties to drop.
  9. Keywords:
  10. Finite Element Analysis ; Composite Materials ; Turbine Blades ; Wind Turbine ; Stress-Strain Behavior ; Vacuum Asisted Resin Transfer Molding (VARTM) ; Thermosetting Resin ; Thermoplastic Resin

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