Zobrazeno 1 - 10
of 165
pro vyhledávání: '"V. G. Niziev"'
Publikováno v:
Journal of Modern Optics. 66:1961-1972
“We report a detailed study of paraxial Laguerre–Gaussian beams with a zero total angular momentum provided by opposite signs of the vortex phase singularity and circular polarization. These beams ...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bcf5832e608967732039c141ca06eb91
https://doi.org/10.1080/09500340.2019.1686183
https://doi.org/10.1080/09500340.2019.1686183
Publikováno v:
Crystallography Reports. 64:687-690
Self-consistent numerical model of laser cladding with coaxial powder injection has been developed. The model takes into account the heat transfer, hydrodynamics, solute transport, and phase transition kinetics. The additive process is numerically an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9633c0a0f5cba13128a3124b48e66958
https://doi.org/10.1134/s106377451904028x
https://doi.org/10.1134/s106377451904028x
Publikováno v:
Scientific Visualization. 11
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e4e41e5d4577d41ee612ca9baffb5ebf
https://doi.org/10.26583/sv.11.5.03
https://doi.org/10.26583/sv.11.5.03
Autor:
A. V. Masalov, V. G. Niziev
Publikováno v:
Bulletin of the Russian Academy of Sciences: Physics. 80:760-765
Analysis of the orbital angular momentum of paraxial light beams shows that a key role in the formation of this quantity is played by phase relations between longitudinal and transverse radiation fields. When a light beam is circularly polarized or h
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9be32793da5718b8329fe75eb7fe2e57
https://doi.org/10.3103/s1062873816070170
https://doi.org/10.3103/s1062873816070170
Publikováno v:
Bulletin of the Russian Academy of Sciences: Physics. 80:381-386
The microstructure of a clad layer produced via selective laser cladding with coaxial metal powder injection is studied numerically. The Johnson–Mehl–Avrami–Kolmogorov equation for condensed systems with inhomogeneous rates of nucleation is use
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f949e4fd0e61be1179528206596038bb
https://doi.org/10.3103/s1062873816040201
https://doi.org/10.3103/s1062873816040201
Autor:
F. Kh. Mirzade, V. Ya. Panchenko, R. V. Grishaev, Sisa Pityana, Corney van Rooyen, V. G. Niziev, M. D. Khomenko
Publikováno v:
Physica B: Condensed Matter. 423:69-76
The numerical model of laser cladding with coaxial powder injection includes the equations for heat transfer, melting and crystallization kinetics. It has been shown that the main parameters influencing the melt pool dynamics and medium maximum tempe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dcb52c2362659ac9f28f1d28e85c6723
https://doi.org/10.1016/j.physb.2013.04.053
https://doi.org/10.1016/j.physb.2013.04.053
Autor:
V. G. Niziev, R. V. Grishaev, M. D. Khomenko, Corney van Rooyen, Sisa Pityana, V. Ya. Panchenko, F. Kh. Mirzade
Publikováno v:
Modeling and Numerical Simulation of Material Science. :61-69
The study of laser-powder cladding process subject to heat transfer, melting and crystallization kinetics has been carried out numerically and experimentally. The Kolmogorov-Avrami equation was applied to describe the kinetics of the phase transition
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::409cbd9b9f54a8c3652585ab403dc1e4
https://doi.org/10.4236/mnsms.2013.32008
https://doi.org/10.4236/mnsms.2013.32008
Publikováno v:
Optical and Quantum Electronics. 48
A transient 3‐D numerical model including heat transfer, solute transport and phase change kinetics is developed for laser cladding with coaxial injection of nickel superalloy powders. The evolution of the temperature and composition distributions
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::623a4d941a465f9ec76ec603db755837
https://doi.org/10.1007/s11082-016-0779-4
https://doi.org/10.1007/s11082-016-0779-4
Publikováno v:
2016 IEEE 7th International Conference on Advanced Optoelectronics and Lasers (CAOL).
The high-speed imaging method was used to study the dynamics of the melt surface during layerwise laser melting of the metal powder. We used the experimental equipment for selective laser melting process. CO 2 -laser radiation with TEM 01 ∗ mode wa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fa0b2de773e590ad715f81131a13ea71
https://doi.org/10.1109/caol.2016.7851413
https://doi.org/10.1109/caol.2016.7851413
Autor:
V. Ya. Panchenko, V. G. Niziev, Yu. A. Poveschenko, A. V. Koldoba, F. Kh. Mirzade, M. V. Popov
Publikováno v:
Mathematical Models and Computer Simulations. 3:723-731
The process of direct sintering of metal powders induced by laser radiation is investigated. A two-component mix of powders consisting of low- and high-melting components is considered. The model is based on a self-consistent nonlinear equation of co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::449f987343f7eac62daa180899bde5f9
https://doi.org/10.1134/s2070048211060081
https://doi.org/10.1134/s2070048211060081