Results 21 to 30 of about 612,603 (315)

Structural health monitoring of 52-meter wind turbine blade: Detection of damage propagation during fatigue testing

Data-Centric Engineering, 2022
This work is concerned with damage detection in a commercial 52-meter wind turbine blade during fatigue testing. Different artificial damages are introduced in the blade in the form of laminate cracks.
Mads A. Fremmelev, Purim Ladpli, Esben Orlowitz, Lars O. Bernhammer, Malcolm McGugan, Kim Branner   +5 more
doaj   +1 more source

On the extension of k−ω−SST corrections to predict flow separation on thick airfoils with leading‐edge roughness

Wind Energy, 2023
Modern wind turbines employ thick airfoils in the outer region of the blade with strong adverse pressure gradients and high sensitivity to flow separation, which can be anticipated by leading‐edge roughness.
Ruben Gutierrez, Riccardo Zamponi, Daniele Ragni, Elena Llorente, Patricia Aranguren   +4 more
doaj   +1 more source

Leaf and Soil Ecological Stoichiometric Characteristics of Tree Species of Different Origins in a Tropical Coastal Shelterbelt Belt of Hainan Island

Shuitu baochi tongbao, 2023
[Objective] The objective of this study was to determine the differences in ecological stoichiometric characteristics of leaves and soil for different tree species of different origins in a tropical coastal shelterbelt of Hainan Island in order to ...
Qingqing Yang, Zhihu Du
doaj   +1 more source

A novel approach to structural load control using intelligent actuators [PDF]

, 2009
The recent trend towards large multi-MW wind turbines resulted in the role of the control system becoming increasingly important. The extension of the role of the controller to alleviate structural loads has motivated the exploration of novel control ...
Dominguez, S., Dutka, Arkadiusz, EPSRC, grant number: EP/DO 34566/1 (Funder), Leithead, W.E., Neilson, Victoria   +4 more
core   +1 more source

Study on identification of modal parameters of mistuned bladed disks (Identification by use of the frequency response curve and the reduced order model)

Nihon Kikai Gakkai ronbunshu, 2023
To develop turbomachinery blades with high reliability, it is indispensable to verify the natural frequency, damping, resonant stress, etc. under operating condition, and utilize these data in the mechanical design of a new blade.
Yasutomo KANEKO, Toshio WATANABE, Tatsuya FURUKAWA   +2 more
doaj   +1 more source

Are inclined screw blades for vertical grain augers advantageous? [PDF]

, 1978
Due to modern technology, screw blades are often manufactured by rolling them out of one single strip of steel. When simultaneously some blade inclination is applied, less residual stresses and/or larger possible ratios between outer and shaft diameter ...
Rademacher, F.J.C.
core   +2 more sources

Feasibility study on a full‐scale wind turbine blade monitoring campaign: Comparing performance and robustness of features extracted from medium‐frequency active vibrations

Wind Energy, 2023
The present work investigates the performance of different features, extracted from vibration‐based data, for structural health monitoring of a 52‐meter wind turbine blade during fatigue testing.
M. A. Fremmelev, P. Ladpli, E. Orlowitz, N. Dervilis, M. McGugan, K. Branner   +5 more
doaj   +1 more source

The Effects of Water Debit and Number of Blades on the Power Generated of Prototype Turbines Propeller as Renewable Electricity

Rekayasa Mesin, 2021
This research is a prototype design of a Pico hydropower plant. The Pico hydro laboratory scale is planned to be installed at the water outlet at the steam gas power plant (PLTGU) in Cilegon, whose water discharge has not been utilized.
Agung Wahyudi Biantoro, Iskendar Iskendar, Subekti Subekti, Nik Hisyamudin bin Muhd Noor   +3 more
doaj   +1 more source

Determining Division Location for Sectional Wind Turbine Blades

Energies, 2017
Sectional wind turbine blades, by dividing an intact blade into multiple segments, have the advantage of being easy to handle and transport. To determine a suitable blade division location, this study was performed to clarify some crucial aspects and ...
Zhiwen Qin, Lei Zhang, Ke Yang, Jihui Wang, Caicai Liao, Jianzhong Xu   +5 more
doaj   +1 more source

Evaluation of influence of turbulence models on the vortex formation processes modeling in wind power [PDF]

Vestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2022
The paper studies the results of mathematical modeling of the external flow of Siemens 3D model SWT3.6120 (B52 air foil) horizontal axis wind turbine (HAWT), using the NavierStokes equations averaged by Reynolds (RANS) closed byk,kShear Stress Transport (
Evgeny V. Solomin, Alexandr A. Terekhin, Andrey S. Martyanov, Anton A. Kovalyov, Denis R. Ismagilov, Gleb N. Ryavkin, Askar Z. Kulganatov, Bogdan T. Pogorelov   +7 more
doaj   +1 more source