Research on Forming Technology of Thermoplastic Composite Blade for Wind Turbine

2013 ◽  
Vol 328 ◽  
pp. 139-143
Author(s):  
Hai Tang Cen ◽  
Xiao Liang Wang ◽  
Zhi Yong Hu
Keyword(s):  
Wind Turbine ◽  
Turbine Blade ◽  
High Performance ◽  
Wind Turbine Blade ◽  
Thermoplastic Composite ◽  
Deformation Model ◽  
Thermoplastic Resin ◽  
Forming Process ◽  
Composite Blade ◽  
Forming Technology

Thermoplastic composite has become preferred material for wind turbine blade with high performance, low cost and greenization. The fused mass of the thermoplastic resin has high viscosity and the forming of the thermoplastic composite materials is laborious, quality is not readily guaranteed, thus, the widespread use of thermoplastic composite blades for wind turbine is restricted. Based on the analysis of all kinds of the characteristics of thermoplastic forming technology, the paper has points out that the diaphragm forming is especially suitable for making a hyperboloid, variable thickness, large size wind turbine thermoplastic composite blade structure. The key to improving the forming quality and the efficiency of the thermoplastic blade forming is to establish finite element deformation model of a diaphragm forming process, to effectively control the process parameters such as temperature, pressure, forming rate. Conducting research on thermoplastic blade diaphragm forming technology lay the foundation for the industrialization of thermoplastic wind turbine blade.

scholarly journals Structural validation of a thermoplastic composite wind turbine blade with comparison to a thermoset composite blade

2021 ◽  
Vol 164 ◽  
pp. 1100-1107
Author(s):  
Robynne E. Murray ◽  
Ryan Beach ◽  
David Barnes ◽  
David Snowberg ◽  
Derek Berry ◽  
...  
Keyword(s):  
Wind Turbine ◽  
Turbine Blade ◽  
Wind Turbine Blade ◽  
Thermoplastic Composite ◽  
Composite Blade ◽  
Structural Validation

Dynamic Analysis for Wind Turbine Composite Blade

2013 ◽  
Vol 364 ◽  
pp. 102-106 ◽  
Author(s):  
Li Qun Zhou ◽  
Shuai Heng Xing ◽  
Yu Ping Li
Keyword(s):  
Wind Turbine ◽  
Turbine Blade ◽  
Wind Turbine Blade ◽  
Inertia Force ◽  
Rotational Inertia ◽  
Fiber Layer ◽  
Composite Blade ◽  
Nature Frequency ◽  
The Relationship ◽  
Blade Model

Wind turbine blade model is analyzed based on finite element method. Research and comparison of blade natural frequencies is made in different rotational working conditions taking into account external factors such as the rotational inertia force. Also the relationship between the composite ply angle and natural frequency is analyzed. The result shows that the nature frequency of wind turbine blade is influence greatly by the stress stiffening effect for the blade rotation. And the nature frequency of wind turbine blade can be designed by adjusting the single fiber layer ply angle of blade.

Damage mode identification of composite wind turbine blade under accelerated fatigue loads using acoustic emission and machine learning

2019 ◽  
Vol 19 (4) ◽  
pp. 1092-1103 ◽  
Author(s):  
Pengfei Liu ◽  
Dong Xu ◽  
Jingguo Li ◽  
Zhiping Chen ◽  
Shuaibang Wang ◽  
...  
Keyword(s):  
Acoustic Emission ◽  
Wind Turbine ◽  
Turbine Blade ◽  
Wind Turbine Blade ◽  
Mode Identification ◽  
Emission Signal ◽  
Composite Blade ◽  
Acoustic Emission Sensors ◽  
Safety Precaution ◽  
Fatigue Loads

This article studies experimentally the damage behaviors of a 59.5-m-long composite wind turbine blade under accelerated fatigue loads using acoustic emission technique. First, the spectral analysis using the fast Fourier transform is used to study the components of acoustic emission signals. Then, three important objectives including the attenuation behaviors of acoustic emission waves, the arrangement of sensors as well as the detection and positioning of defect sources in the composite blade by developing the time-difference method among different acoustic emission sensors are successfully reached. Furthermore, the clustering analysis using the bisecting K-means method is performed to identify different damage modes for acoustic emission signal sources. This work provides a theoretical and technique support for safety precaution and maintaining of in-service blades.

A Preliminary Study on Small Thermoplastic Composite Wind Turbine Blade Design and Fabrication

2015 ◽  
Author(s):  
Juan Garate ◽  
Stephen A. Solovitz ◽  
Dave Kim
Keyword(s):  
Wind Turbine ◽  
Turbine Blade ◽  
Large Scale ◽  
Chord Length ◽  
Wind Turbine Blade ◽  
Thermoplastic Composite ◽  
Horizontal Axis Wind Turbine ◽  
Limit Condition ◽  
Glass Fiber Reinforced ◽  
Turbine Blade Design

Today a large-scale wind turbine blade can be 70 m long and 5 m in root chord length, and it is fabricated in a single piece. This feature leads to high initial costs, as transportation of a large blade requires special trucks, escorts, and road adaptations. These constraints can account for approximately 6–7% of the total investment for the blade. In addition, the manufacturing process commonly used is a hand lay-up configuration of thermoset composite sheets. These materials are not reusable after fabrication, which is a non-renewable feature of existing systems. The project consists of manufacturing thermoplastic composite blades in segments, which are joined before installation at the turbine site. This paper addresses the preliminary research results when conducting design and fabrication of a small blade with this innovative approach. Three segmented blades are manufactured for a horizontal-axis wind turbine, with each blade having a 50 cm span and a 4 cm tip chord length. The blade size and profile are designed based on the idealized Betz limit condition. The material used for manufacturing is a glass fiber reinforced thermoplastic composite system with a polypropylene matrix that melts at 200 °C. Each blade is fabricated in 4 independently manufactured pieces, consisting of top/bottom, and tip/root segments, via a vacuum assisted thermoforming technique. The parts will be assembled afterwards by a joining process, forming the final part for site testing.

scholarly journals Manufacturing a 9-Meter Thermoplastic Composite Wind Turbine Blade

2017 ◽  
Author(s):  
ROBYNNE E. MURRAY ◽  
DANA SWAN ◽  
DAVID SNOWBERG ◽  
DEREK BERRY ◽  
RYAN BEACH ◽  
...  
Keyword(s):  
Wind Turbine ◽  
Turbine Blade ◽  
Wind Turbine Blade ◽  
Thermoplastic Composite

RANCANGAN DAN ANALISIS STRUKTUR SUDU TURBIN ANGIN LPN 10000 E

2010 ◽  
Vol 3 (2) ◽  
Author(s):  
Sulistyo Atmadi ◽  
Firman Hartono
Keyword(s):  
Structural Analysis ◽  
Wind Turbine ◽  
Turbine Blade ◽  
Safety Factor ◽  
Bending Moment ◽  
High Strength ◽  
Wind Turbine Blade ◽  
Unidirectional Reinforcement ◽  
Composite Blade ◽  
Operational Load

Structure of the LPN 10000 E wind turbine blade has been manufactured and its structural analysis to find out the strenght of this structure during its operation has also been conducted. The method of aero bending moment and centrifugal bending moment and load has been used while neglegting frcitional and torsional load. The analysis is obtained for composite blade strengthened by high strength carbon unidirectional reinforcement composite. With safety factor of 1.3 minimum, it was concluded that the blade is strong enough to use at its designed operational load.

Techno-economic analysis of a megawatt-scale thermoplastic resin wind turbine blade

2019 ◽  
Vol 131 ◽  
pp. 111-119 ◽  
Author(s):  
Robynne E. Murray ◽  
Scott Jenne ◽  
David Snowberg ◽  
Derek Berry ◽  
Dylan Cousins
Keyword(s):  
Economic Analysis ◽  
Wind Turbine ◽  
Turbine Blade ◽  
Wind Turbine Blade ◽  
Thermoplastic Resin

Structural Properties Analysis of Composite Wind Turbine Blade

2012 ◽  
Vol 522 ◽  
pp. 602-605
Author(s):  
Lin Xu ◽  
Wen Lei Sun ◽  
An Wu
Keyword(s):  
Composite Materials ◽  
Wind Turbine ◽  
Structural Properties ◽  
Turbine Blade ◽  
Structural Characteristics ◽  
Wind Turbine Blade ◽  
Laminated Structure ◽  
Composite Blade ◽  
Material Component

In the process of wind turbine operation, the blade needs to withstand various kinds of loads. With wind turbine power kept getting bigger, the strength requirement of the blades become higher. In order to improve the strength of the blade, lots of new composite materials are use in blade material component parts. This paper studies the geometry laminated structure, external and structural characteristics of composite blade.

A Study on Aerodynamic and Structural Design of High Efficiency Composite Blade of 1 MW Class HAWTS Considering Fatigue Life

2013 ◽  
Author(s):  
Changduk Kong ◽  
Minwoong Kim ◽  
Gilsu Park
Keyword(s):  
Fatigue Life ◽  
Wind Turbine ◽  
Turbine Blade ◽  
Structural Design ◽  
High Efficiency ◽  
Design Procedure ◽  
Wind Turbine Blade ◽  
Structural Safety ◽  
Horizontal Axis Wind Turbine ◽  
Composite Blade

In this work, 1 MW class horizontal axis wind turbine blade configuration is properly sized and analyzed using the newly proposed aerodynamic design procedure and the in-house code developed by authors, and its design results are verified through comparison with experimental results of the previously developed wind turbine blade. The wind turbine structural design is carried out using the Glass/Epoxy composite materials and the simplified deign methods by the netting rule and the rule of mixture. The structural safety of the designed blade structure is investigated through the various load case studies, and stress, deformation, buckling and vibration analyses using a commercial FEM code, MSC.NASTRAN. Finally the required 20 years fatigue life is confirmed using the modified Spera’s empirical formulae.

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