Results 11 to 20 of about 909,729 (313)

A Comprehensive Analysis of Wind Turbine Blade Damage

Energies, 2021
The scope of this article is to review the potential causes that can lead to wind turbine blade failures, assess their significance to a turbine’s performance and secure operation and summarize the techniques proposed to prevent these failures and ...
D. Katsaprakakis, N. Papadakis, I. Ntintakis   +2 more
semanticscholar   +1 more source

Initial Feasibility Study to Drill and Core the Ocean Mantle [PDF]

Scientific Drilling, 2011
No abstract available.
N. Pilisi, B. Whitney
doaj   +1 more source

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

Thermal-Fluid-Solid Coupling Analysis on the Temperature and Thermal Stress Field of a Nickel-Base Superalloy Turbine Blade

Materials, 2021
Based on the establishment of the original and improved models of the turbine blade, a thermal-fluid-solid coupling method and a finite element method were employed to analyze the internal and external flow, temperature, and thermal stress of the turbine
Liuxi Cai, Yao He, Shunsen Wang, Yun Li, Fang Li   +4 more
semanticscholar   +1 more source

Small Horizontal Wind Turbine Design and Aerodynamic Analysis Using Q-Blade Software

مجلة بغداد للعلوم, 2023
Wind energy is one of the most common and natural resources that play a huge role in energy sector, and due to the increasing demand to improve the efficiency of wind turbines and the development of the energy field, improvements have been made to ...
Othman K. Zidane, Yaseen H. Mahmood
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

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

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

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

Influence of blade inlet angle on the performance of a single blade centrifugal pump

Engineering Applications of Computational Fluid Mechanics, 2021
Single blade centrifugal pump is suitable for transporting sewage water with large obstacles in diameter, which is required to achieve high performance.
Jianfang Chen, W. Shi, Desheng Zhang
semanticscholar   +1 more source