Results 111 to 120 of about 73,894 (273)

Experimental Performance Evaluation of Small-Scale Vertical-Axis Sail-Type Wind Turbines

Wind
Conventional vertical-axis wind turbines (VAWTs) rely on rigid blades that are heavy and require expensive materials and manufacturing processes to withstand aerodynamic loads.
Farooq Saeed, Murtadha A. Alhawaj, Ahmed A. Abualrahah, Ali A. Alsaffar, Tanvir M. Sayeed   +4 more
doaj   +1 more source

Origin of Physicochemical and Mechanical Stability of Low‐Temperature Prepared TiO2‐Based Photocatalytic Films: Surface Hydroxyl Density Matching

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Material science advances show how surface chemistry improves low‐temperature prepared TiO2‐SiO2 composite films. Using a colloidal‐based synthesis method instead of a powdered‐based one, researchers exploit hydroxyl groups' interfacial interactions to create nanoscale structures with superior physicochemical and mechanical stability.
Andraž Šuligoj, Mohamad El‐Roz, Goran Dražić, Frédéric Thibault‐Starzyk, Pegie Cool, Nataša Zabukovec Logar, Urška Lavrenčič Štangar, Nataša Novak Tušar   +7 more
wiley   +1 more source

Drying‐Driven Microstructural Reorganization as a Key Origin of Rate Limitation in Multi‐Walled Carbon Nanotube‐Based Thick Electrodes for Lithium‐Ion Batteries

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
This study shows drying‐driven microstructural reorganization as a key origin of rate limitations in multi‐walled carbon nanotubes (MWCNT)‐based thick electrodes. By decoupling transport properties, the work reveals that rapid evaporation can amplify thickness‐dependent CNT agglomeration, generating coupled electronic and ionic bottlenecks. Importantly,
So Min Gong, Seung Woo Song, Yonghwan Kim, Jiyoon Yoon, Jun Hyun Kang, Yeonsu Jung, Taehoon Kim, Seung Jae Yang, Jae Ho Kim   +8 more
wiley   +1 more source

Method for Analysis of Nonlinear Multiharmonic Vibrations of Mistuned Bladed Disks with Scatter of Contact Interface Characteristics

, 2005
An efficient method for analysis of nonlinear vibrations of mistuned bladed disk assemblies has been developed. This development has facilitated the use of large-scale finite element models for realistic bladed disks, used hitherto in analysis of linear ...
Yevgen Petrov (4463476), Ewins, D, D J Ewins (16057661), Petrov, EP   +3 more
core   +1 more source

The research progress in polyethylene oxide polymer electrolytes

FlexMat, EarlyView.
Polyethylene oxide (PEO) has become the mainstream matrix material for solid polymer electrolytes (SPEs) due to its excellent lithium salt complexation ability and processability. However, its high crystallinity results in low ionic conductivity at room temperature and difficulty in suppressing lithium dendrite growth, which significantly hinders the ...
Ying Wei, Yueting Pu, Zheng Zhang, Yang Li, Cheng Yang, Fangju Tao, Xinxin Han, Fangfang Wu, Linghai Xie   +8 more
wiley   +1 more source

Sensitivity and forced response analysis of anisotropy-mistuned bladed disks with nonlinear contact interfaces

, 2019
A new method has been developed for the analysis of nonlinear forced response of bladed disks mistuned by blade anisotropy scatter and for the forced response sensitivity to blade material anisotropy orientations.
Yevgen Petrov (4463476), Adam Koscso (4467217)   +1 more
core   +1 more source

Modelling of the bladed disk vibration with damping elements in blade shroud

Applied and Computational Mechanics, 2010
The requirement for wide operation range of steam turbine can cause, that the blades work close to resonant frequency. For decreasing of blade’s vibration there are placed damping elements in the blade shroud. These elements are calculated for dissipation of the vibration energy.
Kellner, Josef, Zeman, Vladimír
openaire   +2 more sources

A method for forced response analysis of mistuned bladed disks with aerodynamic effects included

, 2010
A method has been developed for high-accuracy analysis of forced response levels for mistuned bladed disks vibrating in gas flow. Aerodynamic damping, the interaction of vibrating blades through gas flow, and the effects of structural and aerodynamic ...
Yevgen Petrov (4463476)
core  

Zinc oxide/polydimethylsiloxane‐coated carbon fiber yarns for machine‐learning‐assisted gait classification

InfoScience, EarlyView.
Gait analysis can provide valuable information for identifying changes in movement associated with neurological disorders, thus serving as an important support tool in several areas, including healthcare and rehabilitation. In this study, zinc oxide/polydimethylsiloxane (ZnO/PDMS)‐coated carbon fiber yarns were developed and evaluated as pressure ...
Maria Morais, Raquel Barras, Jorge Martins, Ana Rovisco, Elvira Fortunato, Rodrigo Martins, Diana Gaspar, Hugo Gamboa, Emanuel Carlos, Luís Pereira, Pedro Barquinha   +10 more
wiley   +1 more source

Transcending the Space‐Bandwidth and Lighting Trade‐Offs: A Programmable Self‐Mixing Interferometry Imager for Cross‐Scale Surface Inspection

Laser &Photonics Reviews, EarlyView.
This work reports a laser diode‐based self‐mixing interferometry imager featuring illumination‐invariance imaging, a 500 kHz pixel rate, and an 8.77 µm lateral resolution. It also features a programmable field‐of‐view and leading space‐bandwidth product that surpasses existing technologies by an order of magnitude, enabling cross‐scale workflow ...
Zhou Su, Feng Lin, Mubasher Ali, Yuanfu Tan, Wei‐Hsin Liao, Hay Wong   +5 more
wiley   +1 more source