Results 31 to 40 of about 492,333 (290)

Electromagnetic Design of High-Power and High-Speed Permanent Magnet Synchronous Motor Considering Loss Characteristics

open access: yesEnergies, 2021
The motor is an important part of the flywheel energy storage system. The flywheel energy storage system realizes the absorption and release of electric energy through the motor, and the high-performance, low-loss, high-power, high-speed motors are key ...
Wen Ji   +5 more
doaj   +1 more source

A fundamental limit on the performance of geometrically-tuned planar resonators [PDF]

open access: yes, 2011
Geometric frequency tuning in planar electromagnetic resonators is common in many applications. It comes, however, at a penalty in the resonance quality, Q0. The literature traces the causes of such penalty often in terms of the shortcomings in the added
Beach, MA, Morris, KA, Naji, A, Warr, PA
core   +2 more sources

Reflection on methodology of the correlation between electromagnetic interference and safety in high-speed railways [PDF]

open access: yesRailway Sciences
Purpose – In the continuous development of high-speed railways, ensuring the safety of the operation control system is crucial. Electromagnetic interference (EMI) faults in signaling equipment may cause transportation interruptions, delays and even ...
Chang Liu   +4 more
doaj   +1 more source

Design and analysis of ultra‐wideband decoupling structure based on polarization mismatch

open access: yesElectronics Letters
In this work, a polarization rotating surface is designed, analyzed, and applied to the decoupling of ultra‐wideband antennas. A method of using dual‐size combined rings is proposed to expand the operating bandwidth to 4.8 to 18.2 GHz, and the ...
Jianpu Qiao   +4 more
doaj   +1 more source

Optimization of high-speed electromagnetic systems with accurate parametric macromodels generated using sequential sampling of the design space [PDF]

open access: yes, 2012
This paper presents a design optimization approach for electromagnetic systems using parametric macromodels. The parametric macromodels are generated using an efficient sequential sampling of the design space of interest which ensures optimal sample ...
Chemmangat Manakkal Cheriya, Krishnan   +3 more
core   +1 more source

Enhancing Corrosion Resistance and Mechanical Strength of 3D‐Printed Iron Polylactic Acid for Marine Applications via Laser Surface Texturing

open access: yesAdvanced Engineering Materials, EarlyView.
Laser surface texturing significantly improves the corrosion resistance and mechanical strength of 3D‐printed iron polylactic acid (Ir‐PLA) for marine applications. Optimal laser parameters reduce corrosion by 80% and enhance tensile strength by 25% and ductility by 15%.
Mohammad Rezayat   +6 more
wiley   +1 more source

Methodology for the Electromagnetic Design of the Axial-Flux C-Core Switched Reluctance Generator

open access: yesIEEE Access, 2018
The main contribution of this paper is to present a methodology proposal for the electromagnetic design of the axial-flux switched reluctance generator with C core (C-SRG). The proposed methodology focuses on different aspects.
Vanessa Siqueira De Castro Teixeira   +3 more
doaj   +1 more source

Common approach to solving SGEMP, DEMP, and ESD survivability [PDF]

open access: yes, 1977
System Generated Electromagnetic Pulse (SGEMP) and Dispersed Electromagnetic Pulse DEMP) are nuclear generated spacecraft environments. Electrostatic discharge (ESD) is a natural spacecraft environment resulting from differential charging in magnetic ...
Ling, D.
core   +1 more source

Evaluation of the Potential of Laser Shock Peening Compared with Cold Expansion for Improving Fatigue Resistance of Riveted Lap Joints of Aerospace Grade 7175 Al Alloy

open access: yesAdvanced Engineering Materials, EarlyView.
This study investigates laser shock peening for enhancing fatigue performance of riveted aerospace aluminum joints. A comparative approach with cold expansion combines fatigue testing and synchrotron X‐ray methods. Integrating mechanical testing with residual stress and strain characterization provides insights into how different treatments affect the ...
Ogün Baris Tapar   +6 more
wiley   +1 more source

Designed electromagnetic pulsed therapy: Clinical applications [PDF]

open access: yesJournal of Cellular Physiology, 2007
AbstractFirst reduced to science by Maxwell in 1865, electromagnetic technology as therapy received little interest from basic scientists or clinicians until the 1980s. It now promises applications that include mitigation of inflammation (electrochemistry) and stimulation of classes of genes following onset of illness and injury (electrogenomics).
openaire   +3 more sources

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