Results 41 to 50 of about 107,069 (313)

Reduction of Oxide Inclusions During the High‐Frequency Welding of Steel via a Nonthermal Ar/H2 Plasma Jet

open access: yesAdvanced Engineering Materials, EarlyView.
High‐frequency (HF) welding of steel is limited by oxide inclusions that degrade weld quality. This study demonstrates, for the first time, the integration of a nonthermal Ar/H2 dielectric barrier discharge (DBD) plasma jet into HF welding. Local plasma treatment provides effective shielding and in‐situ oxide reduction, resulting in markedly fewer and ...
Viktor Udachin   +4 more
wiley   +1 more source

Erosive Intensity Measurements of Cavitating Jet [PDF]

open access: yes, 2001
Cavitating jets are widely used for cleaning, cutting, improving material strength and so forth. This paper describes the erosive intensity measurement of a cavitating jet with various nozzle configurations.
Kato, Hiroharu, Yuya, Shimomura
core  

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

Active aerodynamics control of simplified vehicle body in a crosswind condition

open access: yesThe Journal of Engineering, 2020
In this study, the authors used a steady jet from a slit nozzle to control the bi-stable aerodynamics of a simple vehicle model under crosswind conditions.
Takuji Nakashima   +6 more
doaj   +1 more source

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

CFD study on nozzle cooling structure for a wind tunnel of high temperature and long operation time

open access: yes工程科学学报, 2016
A wind tunnel of high temperature and long operation time requires the use of cooling techniques,so we need design cooling channels on the nozzle. In this paper,rectangular cooling channels of high cooling efficiency were used to study the factors ...
HE Ning, YANG Hai-bo, SUN Dong-bo
doaj   +1 more source

Near‐Field Electrospinning Micro‐Printhead Achieves Precise Control of Nanofiber Deposition

open access: yesAdvanced Engineering Materials, EarlyView.
A micro‐printhead for near‐field electrospinning enables reproducible deposition of polymer nanofibers with diameters below 50 nm. Systematic parameter studies uncover the mechanisms linking operating conditions to fiber morphology, paving the way for precise and low‐cost nanoscale 3D manufacturing.As a high‐resolution, cost‐effective, and rapid ...
Han Xu, Dario Mager, Jan G. Korvink
wiley   +1 more source

Etude des potentialités des systèmes d'application contrôlée des gouttes (CDA) pour les traitements phytosanitaires en céréaliculture (synthèse bibliographique)

open access: yesBiotechnologie, Agronomie, Société et Environnement, 2016
Study of the potential for the use of controlled droplet application (CDA) upon cereal crops. A review. Introduction. Controlled droplet application (CDA) has the advantage both of the reduction in the span of droplet size distribution and in the volume ...
Ouled Taleb Salah, S.   +5 more
doaj  

Research on flow field characteristic of close-coupled gas atomizing nozzles

open access: yesFenmo yejin jishu
The atomization nozzle is the core component for the metal powder preparation by close-coupled gas atomization method. The pressure at the tip of the melt delivery tube and the stagnation point is very important for the smooth outflow of the molten metal
BAN Wei   +4 more
doaj   +1 more source

Research on airflow uniformity of marine selective catalytic reduction reverse blow system

open access: yesThe Journal of Engineering, 2019
In order to improve the working performance of the ceramic catalyst filter, a model of nozzle blowback was designed to change the nozzle diameter. The blowback tube blowback model with variable diameter and the blowback blowback model with equal diameter
Man Wang, Hongpeng Zhang, Wenke Gong
doaj   +1 more source

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