Results 91 to 100 of about 52,181 (268)

基于雷电物理的风机叶片动态击距与 电气几何模型 [PDF]

open access: yes, 2017
The damage of wind turbine blades suffered lightning strikes has been a key factor of the safe and reliable operation of wind farms. The electric geometrical model of wind turbine blades (EGMTB) was presented based on the traditional electric geometrical
Guo, Zixin   +8 more
core   +1 more source

Prediction of Cure‐Induced Wrinkles Aimed at the Manufacturing of Large Wind Turbine Blades

open access: yesPolymer Composites, EarlyView.
The step‐wise progression of the development of cure‐induced wrinkles. Before curing, at room temperature the laminate is resting at the mould face. In the next step, the wrinkle is developing due to thermal gradients. At the end of curing, the composite has cooled down and the undulation is left in, byt the increase in resin stiffness across the ...
Jesper K. Jørgensen   +2 more
wiley   +1 more source

An Innovative Approach To Making Ultra Light Weight Wind Turbine Blades [PDF]

open access: yesMehran University Research Journal of Engineering and Technology, 2012
An innovative mould free method for the fabrication of ultimate light weight small wind turbine blades made out of composites has been suggested in this paper. The method has been practically applied with very satisfactory results.
Suhail Zaki Farooqui
doaj  

Wind Electronic Generator NU-101 Driven by Axial-Flow Air-Turbine with Stator [PDF]

open access: yes, 1976
"Generators driven by axial-flow air-turbine with stator are relatively small in size and can be adapted to withstand violent blizzards. They are suitable for antarctic use, especially as energy sources for unmanned observation units.
Seiiti Awano
core   +1 more source

Development of Vertical Wind Turbine Blades Using 4D Printing of Composites

open access: yesPolymer Composites, EarlyView.
Vertical axis wind turbine: White blade: Commercial. Black blade: Composite. ABSTRACT This paper presents the procedure to make vertical wind turbine blades using the technique of 4D printing of composites (4DPC). The blades are made using carbon/epoxy composite materials with a fiber volume fraction of about 60%.
Emad Fakhimi, Suong Van Hoa
wiley   +1 more source

Design of Wind Turbine Blades [PDF]

open access: yes, 2016
In this section the research program framework for European PhD network MARE-WINT is presented, particularly the technology development work focussing on reliability/maintenance and the models describing multi-body fluid structure interaction for the Rotor Blade structure.
openaire   +2 more sources

Neural Network‐Based Adaptive Super‐Twisting Control for Perturbed Nonlinear Systems: Lyapunov Design

open access: yesInternational Journal of Robust and Nonlinear Control, EarlyView.
ABSTRACT A newly developed robust control strategy based on an adaptive neural network (ANN) estimator performed in concert with adaptive super‐twisting (ASTW) control is presented. The proposed adaptive robust control algorithm is applied to a class of perturbed nonlinear systems and features a significantly decreased control gain with respect to the ...
Mohammad Javad Mirzaei   +3 more
wiley   +1 more source

Advances in research on impulse hydro‐turbine technology

open access: yesRiver, EarlyView.
Abstract To accelerate the development of impulse hydro‐turbines and support the efficient utilization of hydropower resources in Southwest China, this paper examines the background, historical development, and research progress of impulse hydro‐turbines.
Xiaochao Li   +7 more
wiley   +1 more source

The Concept of a Smart Wind Turbine System [PDF]

open access: yes, 2007
The concept of a smart wind turbine with telescopic blades was analyzed using a mathematical model based on the blade element – momentum theory. The telescopic blade concept uses the idea of extending the turbine blades when wind speeds fall below rated ...
Madawala, U., Sharma, R. N.
core  

Numerical Prediction of Deformation‐Induced Martensitic Transformation in Cold‐Sprayed Austenitic Stainless Steel

open access: yessteel research international, EarlyView.
Cold spray deposition of stainless steel (grade: SS304) is evaluated for marine applications, with emphasis on martensitic transformation during impact. Analytical modeling, simulations, and experiments reveal that helium‐assisted spraying of fine powders promotes cooling below the martensitic start temperature, enabling up to ≈40% austenite to ...
Cal Vin Wong   +4 more
wiley   +1 more source

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