臺灣博碩士論文加值系統

中文摘要
題目: 風力發電葉片真空輔助樹脂轉注成型.
研究生: 孫摩西
指導教授: 楊文彬
複合材料是由兩個或兩個以上的材料組成。它具有重量輕、強度高的多重優勢，因此在航空航天和汽車行業中廣受歡迎。VARTM使用環氧樹脂和纖維來加工製造。本研究的目的是在VARTM製程中使用不同的方法製作高分子複合材料零件，再選擇成果最佳的風力渦輪葉片。有三種不同的VARTM方法來製作零件。由結果可知，由雙真空袋的製程中得到了最佳的成型效果，並用此來製造風力渦輪機葉片。從本文的三個VARTM製程中選擇最佳的方法來製作小型風力渦輪葉片。製程中最重要的控制參數及避免孔洞的關鍵因素是空隙壓力和流速。

Composite materials are composed by two or more materials. It has multiple advantages of light weight and high strength and is highly popular in the aerospace and automobile industry. VARTM is used to fabricate parts with a combination of epoxy resin and woven glass fiber. The purpose of this research is to identify different ways to fabricate polymer composite parts with VARTM and afterwards choosing the one with the best outcome and fabricate a wind turbine blade. There are three different ways used to build parts using VARTM. After concluding that the process with double vacuum bags yielded best molding results and was used to build the wind turbine blade. A small wind turbine blade was made with the best procedure of VARTM found among the three. The most important parameters to control the process and avoid voids in the final part are the pressure and flow velocity.

INDEX
ENGLISH ABSTRACT
CHINESE ABSTRACTS
ACKNOWLEDGEMENTS
INDEX.I
LIST OF FIGURES.IV
LIST OF TABLES.VI
NOMENCLATURE.VII
CHAPTER 1, INTRODUCTION.1
1-1 VARTM Literature.1
1-2 Motivation.3
CHAPTER 2, MODELLING.4
2-1 VARTM mathematical model.4
2-1-1 In-plane flow through a deformable porous medium mathematical model.4
2-1-2 Compaction and Permeability Models.6
2-2 Wind Turbine Blade Specifications and Mold Design.7
2-2-1 Airfoil.7
2-2-2 Blade.8
2-2-3 Blade Design.10
2-2-4 Blade Mold Design.11
2-2-5 Fiber Parts Lengths.14
CHAPTER 3, EXPERIMENTAL METHODS FOR VARTM PROCESS AND RESULTS.16
3-1 Composite Materials.16
3-2 Materials.18
3-3 Devices.23
3-4 VARTM Process.25
3-4-1 First VARTM process.26
3-4-2 Second VARTM process.29
3-4-3 Third VARTM process.31
1- Polishing the mold.31
2-Vacuum tape layer positioning.31
3- Mold release agent application.32
4- Inlet and Outlet positioning.32
5- Fiber arrangement placements.32
6- Vacuum bag placements.32
7- Undertake resin insertion.33
8- Curing.33
3-5 Results and Discussions.35
3-5-1 Thickness.36
3-5-2 Flow Velocity.38
CHAPTER 4, WIND TURBINE BLADE FABRICATION USING VARTM.41
a) Glass Fiber Preparation.41
b) Mold Preparation.41
c) Resin/Hardener Mixture.42
d) Resin Infusion.42
e) Double Bagging Curing Process.43
f) De-molding Process.44
CHAPTER 5, CONCLUSIONS.45
REFERENCES.47
APPENDIX A.48

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