Results 51 to 60 of about 106,437 (299)

Rapidly Solidified High‐Strength Invar 36 Prepared by Planar‐Flow Melt Spinning

open access: yesAdvanced Engineering Materials, EarlyView.
The Invar 36 alloy was rapidly solidified using the planar‐flow melt‐spinning technique. Ribbon samples with thicknesses ranging from 20 to 160 mm were produced. As the grain size of the ribbon decreased to sub‐micron levels, the hardness increased by more than 2 times.
Bekir Akgül, Mehmet Kul
wiley   +1 more source

Combination Tones in Violins

open access: yesArchives of Acoustics, 2013
In this study we investigate the appearance of combination tones in violins. Most authors in recent times have emphasised that combination tones occur inside the ear exclusively (intra-aural).
Angela LOHRI   +2 more
doaj  

Wave processes in alternating current traction network depending on parameters of power supply system [PDF]

open access: yesОмский научный вестник, 2019
The article considers a mathematical model of the AC traction power supply system taking into account stationary and nonstationary wave processes. The model allows you to analyze the effect of system parameters on electromagnetic processes at its ...
T. V. Kovaleva   +2 more
doaj   +1 more source

Non-Integral AC Capacitor Voltage Calculation Method for Shunt Hybrid Active Power Filter

open access: yesIEEE Access, 2023
This paper introduces a novel non-integral method for calculating AC capacitor voltage in shunt hybrid active power filters (SHAPFs). These filters commonly use passive power filters (PPFs) that can introduce voltage containing harmonics into the AC ...
Hyunjae Lee, Jingeun Shon
doaj   +1 more source

Materials‐Driven Additive Manufacturing for Electrical Machines: Qualification‐Oriented Design Beyond Geometric Freedom

open access: yesAdvanced Engineering Materials, EarlyView.
This perspective reframes additive manufacturing for electrical machines as a qualification‐limited materials and architecture design problem. It links process–structure–property–performance relationships to magnetic, conducting, dielectric, and thermal property windows, highlighting where AM can enable segmented magnetic circuits, permanent magnet ...
Dénes Fodor, Loránd Szabó
wiley   +1 more source

Review of Ship Microgrids: System Architectures, Storage Technologies and Power Quality Aspects

open access: yesInventions, 2017
Ship microgrids have recently received increased attention, mainly due to the extensive use of power electronically interfaced loads and sources. Characteristics of these microgrids are similar to islanded terrestrial microgrids, except the presence of ...
Shantha Gamini Jayasinghe   +4 more
doaj   +1 more source

On harmonic and asymptotically harmonic Finsler manifolds

open access: yesAnnals of the Alexandru Ioan Cuza University - Mathematics
In the present paper we introduce and investigate some types of harmonic Finsler manifolds and find out the interrelation between them. We give some characterizations of such spaces in terms of the Finsler mean curvature of geodesic spheres and the Finsler Laplacian of the distance function induced by the Finsler metric.
Shah, Hemangi, Taha, Ebtsam H.
openaire   +2 more sources

Chemical State Detection and Charge Transfer in Complex Oxide Heterostructures via In Situ Auger Electron Spectroscopy

open access: yesAdvanced Functional Materials, EarlyView.
In situ Auger Electron Spectroscopy resolves oxidation states with high fidelity during the pulsed laser deposition of multivalent perovskite manganate and vanadate heterostructures. The chemical‐state signature is carried by the valence‐electron population of the transition‐metal cation, read out through the relative intensities of Auger fine ...
Harish Kumarasubramanian   +1 more
wiley   +1 more source

Design, analysis and implementation of real-time harmonics elimination: A generalised approach

open access: yes, 2014
© The Institution of Engineering and Technology 2014. It is not a secret that the problem of harmonics and switching frequency can have a dreadful impact on switching power converters.
Nibouche, Mokhtar   +2 more
core   +1 more source

Future work on harmonics : some expert opinions part I : wind and solar power [PDF]

open access: yes, 2014
A workshop on power system harmonics was organized in Stockholm in January 2014. On the agenda was among others a discussion on what are the main issues on harmonics at the moment and in the near future.
Desmet, Jan   +29 more
core   +1 more source

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