Results 71 to 80 of about 472,379 (329)
Pantograph Arc’s Energy Characters Under Various Load
机车电传动, 2011 Due to the increasing speed of the locomotive, the pantograph-catenary disconnection was getting worse, and the pantograph arc occured frequently. The pantograph arc etched the pantograph slider and contact wire, and the etching level was influenced by ...
王波 +4 more
doaj
Analysis and Solutions of Arcing Problem in Urban Rail Transit Vehicle Bases
Chengshi guidao jiaotong yanjiu［Objective］ Arcing problems frequently occur in Shanghai rail transit vehicle bases, which not only damage the appearance and structure of the rails and wheels, but also affect train operation safety. Therefore, it is necessary to analyze arcing problems
LU Yumin
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Arcing and discharges in high-voltage subsystems of Space Station [PDF]
Arcing and other types of electrical discharges are likely to occur in high-voltage subsystems of the Space Station. Results from ground and space experiments on the arcing of solar cell arrays are briefly reviewed, showing that the arcing occurs when ...
Singh, N.
core +1 more source
Advanced Engineering Materials, EarlyView.Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios +5 more
wiley +1 more source
Pre-Arcing Time Prediction in a Making Test for a 420 kV 63 kA High-Speed Earthing Switch
Energies, 2017 A high-speed earthing switch (HSES) of a gas-insulated switchgear (GIS) performs a secondary role in protecting the power system in the event of an accident.
Min-Cheol Kang +2 more
doaj +1 more source
Advanced Engineering Materials, EarlyView.This paper presents a novel approach to reducing oxide layers on metal powders using low‐temperature hydrogen dielectric barrier discharge plasmas at atmospheric pressure. Unlike conventional hydrogen‐plasma reductions, the powders do not contact the plasma directly.
Shukang Zhang +3 more
wiley +1 more source
Transient Arcing Characteristics of the Pantograph–Catenary System in Electrical Sectioning Overlaps
InfrastructuresTransient arcing often occurs as an electric locomotive traverses an electrical sectioning overlap (ESO), deteriorating current collection stability and reducing the durability of the pantograph–catenary (PC) system.
Like Pan +4 more
doaj +1 more source
The voltage threshold for arcing for solar cells in LEO: Flight and ground test results [PDF]
Ground and flight results of solar cell arcing in low Earth orbit (LEO) conditions are compared and interpreted. It is shown that an apparent voltage threshold for arcing may be produced by a strong power law dependence of arc rate on voltage, combined ...
Ferguson, D. C.
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Characteristics of an x-ray preionized TEA CO laser [PDF]
, 1987 A cryogenically cooled sealed-off x-ray preionized self-sustained discharge CO laser was succesfully operated. It was found that 20 to 40% higher output energies could be obtained using x-ray instead of uv preionization.
Ernst, G.J., Zuidema, R.J.
core +3 more sources
Advanced Engineering Materials, EarlyView.This study develops sustainable MgO–C refractories using recycled materials and eco‐friendly fructose–tannin binders. The enhanced performance of citric acid as a cross‐linker and functional additives on mechanical and thermomechanical properties was examined. Characterization included strength tests, immersion trials, and microstructural and inclusion
Dinesh K. Gunasekar +7 more
wiley +1 more source