scholarly journals Manufacturing of Advanced Composite Wind Turbine Blades for Counter Rotating Vertical Wind Turbine

2019 ◽  
Vol 57 (2) ◽  
pp. 45-56
Author(s):  
Mihaela Raluca Condruz ◽  
Ion Malael ◽  
Ionut Sebastian Vintila ◽  
Mihail Puscas Cernat
Keyword(s):  
Wind Turbine ◽  
Manufacturing Process ◽  
Turbine Blades ◽  
Cost Effective ◽  
Manufacturing Technology ◽  
Vertical Wind ◽  
Iterative Approach ◽  
Wind Turbine Blades ◽  
Advanced Composite ◽  
Advanced Technologies

The paper presents the manufacturing process of advanced composite wind turbine blades designed for an experimental counter rotating vertical wind turbine (CR-VAWT). An iterative approach was used to present the manufacturing process of turbine blades starting from presentation of the turbine structure and material description as well as all manufacturing process stages. Two types of turbine blades were successfully manufactured using metallic molds and a cost-effective manufacturing technology. Based on the turbine blades obtained it can be said that the selected manufacturing process showed good results, very similar with results expected in case of using advanced technologies (i.e. autoclave technology.

Alternative Materials, Manufacturing Processes, and Structural Designs for Large Wind Turbine Blades

2002 ◽  
Author(s):  
Dayton A. Griffin
Keyword(s):  
Wind Turbine ◽  
Turbine Blades ◽  
Cost Effective ◽  
Manufacturing Processes ◽  
Wind Turbine Blades ◽  
Cost Weight ◽  
Study Results ◽  
Wide Range ◽  
Structural Configurations ◽  
Self Gravity

As part of the U.S. Department of Energy’s Wind Partnerships for Advanced Component Technologies program, Global Energy Concepts LLC (GEC) has performed a study concerning innovations in materials, processes and structural configurations for application to wind turbine blades in the multi-megawatt range. Constraints to cost-effective scaling-up of the current commercial blade designs and manufacturing methods are identified, including self-gravity loads, transportation, and environmental considerations. A trade-off study is performed to evaluate the incremental changes in blade cost, weight, and stiffness for a wide range of composite materials, fabric types, and manufacturing processes. Fiberglass/carbon hybrid blades are identified as having a promising combination of cost, weight, stiffness and fatigue resistance. Vacuum-assisted resin transfer molding, resin film infusion, and pre-impregnated materials are identified as having benefits in reduced volatile emissions, higher fiber content, and improved laminate quality relative to the baseline wet lay-up process. Alternative structural designs are identified, including jointed configurations to facilitate transportation. Based on the study results, recommendations are developed for further evaluation and testing to verify the predicted material and structural performance.

scholarly journals High-Resolution Structure-from-Motion for Quantitative Measurement of Leading-Edge Roughness

Energies ◽  
2020 ◽  
Vol 13 (15) ◽  
pp. 3916 ◽  
Author(s):  
Mikkel Schou Nielsen ◽  
Ivan Nikolov ◽  
Emil Krog Kruse ◽  
Jørgen Garnæs ◽  
Claus Brøndgaard Madsen
Keyword(s):  
High Resolution ◽  
Wind Turbine ◽  
Structure From Motion ◽  
Turbine Blades ◽  
Leading Edge ◽  
Cost Effective ◽  
Wind Turbine Blades ◽  
Edge Roughness ◽  
High Resolution Structure ◽  
Resolution Structure

Over time, erosion of the leading edge of wind turbine blades increases the leading-edge roughness (LER). This may reduce the aerodynamic performance of the blade and hence the annual energy production of the wind turbine. As early detection is key for cost-effective maintenance, inspection methods are needed to quantify the LER of the blade. The aim of this proof-of-principle study is to determine whether high-resolution Structure-from-Motion (SfM) has the sufficient resolution and accuracy for quantitative inspection of LER. SfM provides 3D reconstruction of an object geometry using overlapping images of the object acquired with an RGB camera. Using information of the camera positions and orientations, absolute scale of the reconstruction can be achieved. Combined with a UAV platform, SfM has the potential for remote blade inspections with a reduced downtime. The tip of a decommissioned blade with an artificially enhanced erosion was used for the measurements. For validation, replica molding was used to transfer areas-of-interest to the lab for reference measurements using confocal microscopy. The SfM reconstruction resulted in a spatial resolution of 1 mm as well as a sub-mm accuracy in both the RMS surface roughness and the size of topographic features. In conclusion, high-resolution SfM demonstrated a successful quantitative reconstruction of LER.

Manufacturing technology of integrated textile-based sensor networks forin situmonitoring applications of composite wind turbine blades

2016 ◽  
Vol 25 (10) ◽  
pp. 105012 ◽  
Author(s):  
Eric Haentzsche ◽  
Ralf Mueller ◽  
Matthias Huebner ◽  
Tristan Ruder ◽  
Reimar Unger ◽  
...  
Keyword(s):  
Sensor Networks ◽  
Wind Turbine ◽  
Turbine Blades ◽  
Manufacturing Technology ◽  
Wind Turbine Blades

Unsustainable Wind Turbine Blade Disposal Practices in the United States

2016 ◽  
Vol 26 (4) ◽  
pp. 581-598 ◽  
Author(s):  
Katerin Ramirez-Tejeda ◽  
David A. Turcotte ◽  
Sarah Pike
Keyword(s):  
United States ◽  
Wind Turbine ◽  
Turbine Blade ◽  
Turbine Blades ◽  
Cost Effective ◽  
The United States ◽  
Wind Turbine Blade ◽  
Thermoplastic Composites ◽  
Wind Turbine Blades ◽  
Material Recovery

Finding ways to manage the waste from the expected high number of wind turbine blades in need of disposal is crucial to harvest wind energy in a truly sustainable manner. Landfilling is the most cost-effective disposal method in the United States, but it imposes significant environmental impacts. Thermal, mechanical, and chemical processes allow for some energy and/or material recovery, but they also carry potential negative externalities. This article explores the main economic and environmental issues with various wind turbine blade disposal methods. We argue for the necessity of policy intervention that encourages industry to develop better technologies to make wind turbine blade disposal sustainable, both environmentally and economically. We present some of the technological initiatives being researched, such as the use of bio-derived resins and thermoplastic composites in the manufacturing process of the blades.

Structural design and manufacturing process of a low scale bio-inspired wind turbine blades

2019 ◽  
Vol 208 ◽  
pp. 1-12 ◽  
Author(s):  
Camilo Herrera ◽  
Mariana Correa ◽  
Valentina Villada ◽  
Juan D. Vanegas ◽  
Juan G. García ◽  
...  
Keyword(s):  
Wind Turbine ◽  
Structural Design ◽  
Manufacturing Process ◽  
Turbine Blades ◽  
Wind Turbine Blades ◽  
Design And Manufacturing

Study on Material Selection and Manufacturing Process of Wind Turbine Blades

2010 ◽  
Vol 150-151 ◽  
pp. 1621-1624
Author(s):  
Jin Xu ◽  
Wei Zhang ◽  
Chun Xia Wang
Keyword(s):  
Wind Turbine ◽  
Manufacturing Process ◽  
Material Selection ◽  
Structural Characteristics ◽  
Turbine Blades ◽  
Wind Turbine Blades ◽  
High Quality ◽  
Advantages And Disadvantages ◽  
Manufacturing Technologies

The materials and structural characteristics of several kinds of wind turbine blades are introduced and analyzed as well as the advantages and disadvantages of blades composites in this paper. Then the manufacturing technologies between traditional and high-quality composite wind turbine blades are studied and compared in this paper.

Simulating the Manufacturing Process and Subsequent Structural Stiffness of Composite Wind Turbine Blades with and without Defects

2012 ◽  
Vol 504-506 ◽  
pp. 249-254 ◽  
Author(s):  
Konstantine A. Fetfatsidis ◽  
Cynthia Mitchell ◽  
James A. Sherwood ◽  
Eric Harvey ◽  
Peter Avitabile
Keyword(s):  
Wind Turbine ◽  
Manufacturing Process ◽  
Turbine Blades ◽  
Hybrid Approach ◽  
Structural Stiffness ◽  
Wind Turbine Blades ◽  
Forming Process ◽  
Shell Elements ◽  
Reinforced Composite ◽  
Out Of Plane

Traditional ply-based and zone-based models are limited in their ability to account for the fiber directions resulting from the forming of fabric-reinforced composite wind turbine blades. Compounding the problem is the presence of defects such as resin-rich pockets of the polymer matrix due to out-of-plane and in-plane waves resulting from the manufacturing process. As a result, blades are typically overdesigned, unnecessarily increasing weight and material costs. In the current research, a methodology is presented for simulating the manufacturing process for fabric-reinforced composite wind turbine blades using ABAQUS/Explicit. The methodology captures the evolution of the yarn directions during the forming process thereby allowing for a map of the fiber orientations throughout the blade. A hybrid approach using conventional beam and shell elements is used to model the various fabric layers. Using experimental shear, tensile, bending, and friction data to characterize the mechanical behavior of the fabric layers, the model captures in-plane yarn waviness and changes in the in-plane yarn orientations as they conform to the shape of the mold, as well as out-of-plane wave defects as a result of the manufacturing process. Subsequently, after the fabric layers have been laid into the mold and the final yarn orientations are known, the structural stiffness of the blade resulting from the resin-infused fabrics can be calculated. The methodology can thereby link the resulting bending and torsional stiffnesses of the blade back to the manufacturing process. This paper discusses the methodology for determining the material properties of the beam and shell elements in their final orientations in the cured composite to predict the structural stiffness of a wind turbine blade.

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