Results 51 to 60 of about 474,421 (340)

Symmetries of arcs

open access: yesJournal of Combinatorial Theory, Series A, 1994
The authors' introduction: ``We denote by \(P \Gamma L(3,q)\) the full collineation group of \(PG(2,q)\) while \(PGL (3,q)\) denotes the group of homographies of \(PG (2,q)\). The stabiliser of a \(k\)-arc \({\mathcal K}\) in \(P \Gamma L(3,q)\) is called the collineation stabiliser of \({\mathcal K}\), while the stabiliser of \({\mathcal K}\) in \(PGL
Christine M. O'Keefe, Tim Penttila
openaire   +2 more sources

Influence of an Argon/Silane Atmosphere on the Temperature of a Thermal Plasma

open access: yesAdvanced Engineering Materials, EarlyView.
The influence of a silane‐doped argon atmosphere on the chemical composition and temperature of a thermal nontransferring argon plasma is investigated using optical emission spectroscopy. As a result of the high amount of free electrons resulting from the stepwise ionization and dissociation of the silane molecule, even a silane addition of 0.01 vol ...
Lena Kreie   +4 more
wiley   +1 more source

On reversing arcs to improve arc-connectivity

open access: yesInformation Processing Letters
8 ...
Pierre Hoppenot, Zoltán Szigeti
openaire   +4 more sources

Oxide‐Free Titanium Coatings by Wire Arc Spraying in a Silane‐Doped Inert Atmosphere

open access: yesAdvanced Engineering Materials, EarlyView.
A silane‐doped argon atmosphere enables the production of oxide‐free titanium coatings via twin‐wire arc spraying at ambient pressure. This innovative approach eliminates residual oxygen, creating process conditions that prevent oxidation and nitride formation.
Manuel Rodriguez Diaz   +4 more
wiley   +1 more source

Study on arc extinguishing characteristics of multiple series gap under long clearances

open access: yesAIP Advances, 2022
In order to improve the arcing capability of multiple series gaps, it is very important to understand the arcing principle and the influence of the control length of airflow passage on the arcing process.
Zijian Li   +5 more
doaj   +1 more source

Classification of multiple electromagnetic interference events in high-voltage power plant [PDF]

open access: yes, 2018
This paper addresses condition assessment of electrical assets contained in high voltage power plants. Our work introduces a novel analysis approach of multiple event signals related to faults, and which are measured using Electro-Magnetic Interference ...
Boreham, Philip   +5 more
core   +2 more sources

Thermodynamic Pathways of Nonequilibrium Solidification in Wire‐Arc Additive Manufacturing Fe‐Based Multicomponent Alloy Structures

open access: yesAdvanced 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

The Influence of Pantograph Arcing on the Current Collection of Electrified Trains Under Different Air Pressures

open access: yesApplied Sciences
As well as the off-line phenomenon between the pantograph strip and the contact wire that occurs frequently, the current collection quality of trains is potential under threat.
Tong Xing   +6 more
doaj   +1 more source

Productivity‐Driven Optimization of Laser Powder Bed Fusion Parameters for IN718 Superalloy: Process Control, Microstructure, and Mechanical Properties

open access: yesAdvanced Engineering Materials, EarlyView.
This study demonstrates how optimizing laser power, scanning speed, and hatching distance in laser powder bed fusion can boost the productivity of Inconel 718 manufacturing by up to 29% while maintaining mechanical integrity. The work delivers a validated process window and cost–time analysis, offering industry‐ready guidelines for efficient additive ...
Amir Behjat   +7 more
wiley   +1 more source

‘Acies’ and ‘Arces.’ [PDF]

open access: yesThe Classical Review, 1920
n ...
openaire   +2 more sources

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