Results 91 to 100 of about 153,308 (282)

Mechanisms of Ignition by Transient Energy Deposition: Regimes of Combustion Waves Propagation

open access: yes, 2013
Regimes of chemical reaction wave propagating in reactive gaseous mixtures, whose chemistry is governed by chain-branching kinetics, are studied depending on the characteristics of a transient thermal energy deposition localized in a finite volume of ...
Ivanov, Mikhail F.   +3 more
core   +1 more source

Heat kernels are not uniform expanders

open access: yesAnnales Henri Lebesgue
We study infinite analogues of expander graphs, namely graphs whose subgraphs weighted by heat kernels form an expander family. Our main result is that there does not exist any infinite expander in this sense. This proves the analogue for random walks of Benjamini’s conjecture that there is no infinite graph whose metric balls are uniformly expanders ...
Frączyk, Mikołaj, van Limbeek, Wouter
openaire   +3 more sources

Laser Metal Powder Deposition of Titanium Microalloyed HSLA Steel FeC0.12Si0.25Mn1.3

open access: yesAdvanced Engineering Materials, EarlyView.
This study investigates the additive manufacturing of titanium‐doped high‐strength low‐alloy (HSLA) steel via laser metal deposition. It reveals distinct process‐structure relationships for elemental powder blends compared to prealloyed feedstocks.
Olaf Stelling   +2 more
wiley   +1 more source

Automatic optimization combined with genetic algorithm and CFD for temperature uniformity of OLED glass substrate

open access: yesCase Studies in Thermal Engineering
The heating technology and temperature uniformity of glass substrate (GS) are crucial for the final display quality and efficiency of OLED. In a high-temperature and large heating environment with mutual influences among multiple variables, maintaining ...
Huikun Cai   +3 more
doaj   +1 more source

Numerical study of the induction heating of aluminium sheets for hot stamping

open access: yesMATEC Web of Conferences, 2018
Induction heating is one of the most popular metal heating technologies because of its high heating rate and high energy efficiency. This method is suitable for heating workpieces/blanks in different shapes, sizes and materials.
Tian Yankang   +3 more
doaj   +1 more source

Absorbable-susceptor joining of ceramic surfaces [PDF]

open access: yes, 1983
An assembly of ceramic surfaces particularly refractory metal oxides and carbides, abutting a thin sheet of metal susceptor material are placed in a chamber of an enclosure containing inert gas.
Schroeder, J. E., Shlichta, P. J.
core   +1 more source

Speed sensorless field oriented control of ac induction motor using model reference adaptive system [PDF]

open access: yes, 2020
In order implement the vector control technique, the motor speed information is required. Incremental encoder, resolvers and tachogenerator, are used to reveal the speed.
Ismael, Ahmed Jameel
core  

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

Radial evolution of the wave-vector anisotropy of solar wind turbulence between 0.3 and 1 AU

open access: yes, 2013
We present observations of the power spectral anisotropy in wave-vector space of solar wind turbulence, and study how it evolves in interplanetary space with increasing heliocentric distance.
Bourouaine, Sofiane   +4 more
core   +1 more source

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