Results 121 to 130 of about 251,691 (297)

Intelligent wind turbine blade icing detection using supervisory control and data acquisition data and ensemble deep learning

open access: yesEnergy Science & Engineering, 2019
Ice accretion on wind turbine blades is one of the major faults affecting the operational safety and power generation efficiency of wind turbines. Current icing detection methods are based on either meteorological observing system or extra condition ...
Yao Liu   +4 more
semanticscholar   +1 more source

Preliminary analysis of performance and loads data from the 2-megawatt mod-1 wind turbine generator [PDF]

open access: yes
Preliminary test data on output power versus wind speed, rotor blade loads, system dynamic behavior, and start-stop characteristics on the Mod-1 wind turbine generator are presented.
Neustadter, H. E.   +3 more
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

Prediction of low frequency and impulsive sound radiation from horizontal axis wind turbines [PDF]

open access: yes, 1981
Theoretical models to predict the radiation of low frequency and impulsive sound from horizontal axis wind turbines due to three sources: (1) steady blade loads; (2) unsteady blade loads due to operation in a ground shear; (3) unsteady loads felt by the ...
Harris, W. L.   +2 more
core   +1 more source

Mode I Fracture Toughness and Compressive Properties of Glass Fibre Reinforced Acrylic Matrix Composites Before and After Seawater Ageing

open access: yesPolymer Composites, EarlyView.
Mode I Fracture Toughness Test of Dry and Seawater Aged Glass Fibre/Acrylic Matrix Composites. ABSTRACT Acrylic thermoplastic composites are emerging as a promising alternative for tidal and offshore wind turbine blades and marine applications, offering comparable structural performance and manufacturing process with improved end‐of‐life recyclability ...
Nagappa Siddgonde   +3 more
wiley   +1 more source

Use of the WEST-1 wind turbine simulator to predict blade fatigue load distribution [PDF]

open access: yes
To test the ability of WEST-1 to predict blade fatigue load distribution, actual wind signals were fed into the simulator and the response data were recorded and processed in the same manner as actual wind turbine data.
Janetzke, D. C.
core   +1 more source

Updating Finite Element Model of a Wind Turbine Blade Section Using Experimental Modal Analysis Results [PDF]

open access: yes, 2014
This paper presents selected results and aspects of the multidisciplinary and interdisciplinary research oriented for the experimental and numerical study of the structural dynamics of a bend-twist coupled full scale section of a wind turbine blade ...
Berring, Peter   +5 more
core   +3 more sources

The scale matters: A review on stimuli‐responsive microrobots categorized by scale for biomedical applications

open access: yesResponsive Materials, EarlyView.
We systematically summarize how each scale dictates fundamental choices in design feature, manufacturing technology, driving mechanism, and control strategy, which are inherently governed by scale‐dominated physical principles. Furthermore, the application of scale‐determined operation modes of microrobots across different stages of medical ...
Hang Yin   +3 more
wiley   +1 more source

Simulation of wind turbine wake interaction using the vorticity transport model [PDF]

open access: yes, 2010
The aerodynamic interactions that can occur within a wind farm can result in the constituent turbines generating a lower power output than would be possible if each of the turbines were operated in isolation.
Ahlin   +15 more
core   +1 more source

Efficient Harvesting of Irregular and Low‐Frequency Mechanical Energy via Hybridized Electromagnetic‐Triboelectric Systems

open access: yesSmall, EarlyView.
ABSTRACT The rapid expansion of the Internet of Things (IoT) and wearable electronics necessitates sustainable power sources to replace the limited electrochemical battery. While mechanical energy harvesting offers a promising solution, traditional harvesters face challenges of irregular and low−frequency environmental sources. This review presents the
Yongbin Han   +2 more
wiley   +1 more source

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