Results 71 to 80 of about 82,928,475 (246)

Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying

open access: yesAdvanced Engineering Materials, EarlyView.
An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara   +8 more
wiley   +1 more source

Absolute matrix summability via almost increasing sequence

open access: yes, 2021
In the present paper, a new theorem concerning absolute matrix summability factors, which generalizes a theorem on the  summability factors of infinite series, has been proved by using almost increasing sequence and matrix transformation ...
Kartal, Bağdagül   +1 more
core  

Optimization of the Production of Rubber Compounds Using Mathematical Models

open access: yesAdvanced Engineering Materials, EarlyView.
Rubber compounds were mixed in a batch internal mixer, and symbolic regression was used to derive mathematical models linking recipe and process parameters to ram path, torque, and mixing quality (incorporation, dispersion, distribution). Subsequent optimization with evolutionary algorithms identified operating conditions that reduce specific energy ...
Anke Bardehle   +7 more
wiley   +1 more source

Note on Absolute Matrix Summability Factors

open access: yes, 2010
In this paper a theorem on absolute matrix summability factors, which generalizes a theorem ofÖzarslan andÖgdük [5] on |T, p n | k summability methods, has been ...
Vipin Kumar Gupta   +2 more
core  

GENERALIZED ABSOLUTE MATRIX SUMMABILITY FACTORS

open access: yes
We generalize a theorem dealing with absolute summability factors of an infinite series to absolute matrix summability under weaker conditions by using an almost increasing ...
ÖZARSLAN, HİKMET, Erdogan, BAĞDAGÜL
core   +1 more source

A new factor theorem on absolute matrix summability methods [PDF]

open access: yes, 2019
The aim of this paper is to obtain a new theorem dealing with absolute matrix summability factors.
Yildiz, S., Yildiz S.
core  

Oscillation Criteria for Matrix Hamiltonian Systems via the Summability Method

open access: yesRocky Mountain Journal of Mathematics, 2009
By using the summability method and Riccati transformation, the author studies the oscillation of the following linear matrix Hamiltonian system \[ \begin{cases} X'=A(t)X+B(t)U,\\ U'=C(t)X-A^{*}(t)U, \;t\geq0. \end{cases} \] Some new oscillation criteria are established, which improve and generalize some known results of \textit{G. J. Butler, H.
openaire   +2 more sources

Workflow for Design of Experiments‐Based Modeling of Species Transport and Growth Kinetics in GaN Hydride Vapor Phase Epitaxy

open access: yesAdvanced Engineering Materials, EarlyView.
A novel workflow for investigating hydride vapor phase epitaxy for GaN bulk crystal growth is proposed. It combines Design of experiments (DoE) with physical simulations of mass transport and crystal growth kinetics, serving as an intermediate step between DoE and experiments.
J. Tomkovič   +7 more
wiley   +1 more source

Electrochemical Behavior of Flame‐Sprayed Sc‐Doped AlCoCrFeMo High‐Entropy Alloy Coatings in 3.5% Sodium Chloride Solution

open access: yesAdvanced Engineering Materials, EarlyView.
Scandium (Sc)‐doped AlCoCrFeMo HEA coatings are fabricated via flame spraying with 0.1, 0.3, and 0.5 wt% Sc additions. Among these, the HEA‐Sc0.3 coating exhibits the highest corrosion resistance, indicated by a more positive corrosion potential and lower current density.
Pankaj Kumar   +7 more
wiley   +1 more source

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