Персона: Петровский, Анатолий Николаевич
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Институт интеллектуальных кибернетических систем
Цель ИИКС и стратегия развития - это подготовка кадров, способных противостоять современным угрозам и вызовам, обладающих знаниями и компетенциями в области кибернетики, информационной и финансовой безопасности для решения задач разработки базового программного обеспечения, повышения защищенности критически важных информационных систем и противодействия отмыванию денег, полученных преступным путем, и финансированию терроризма.
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Руководитель научной группы "Исследовательский центр в сфере искусственного интеллекта по направлению «Транспорт и логистика»
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Петровский
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Анатолий Николаевич
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- ПубликацияТолько метаданныеPrinciples of Making Materials with a Spatial Distribution of Macroscopic Zones with Different Physical and Mechanical Properties(2021) Blinova, E. N.; Libman, M. A.; Pimenov, E. V.; Petrovskii, V. N.; Петровский, Анатолий Николаевич© 2021, Allerton Press, Inc.Abstract: The metallophysical principles and technological aspects are considered for developing a new class of materials characterized by a spatial distribution of macroscopic zones with different physical and mechanical properties, as well as gradient materials. The potential for making such materials has been demonstrated by the example of alloys belonging to the iron-chromium-nickel system of the austenitic-martensitic class. The role of severe plastic deformation and heat treatment using laser radiation for the production of materials consisting of paramagnetic macroscopic zones distributed in a certain way within a ferromagnetic matrix is analyzed. The potential for using such materials for manufacturing active parts of electrical machine rotors are discussed.
- ПубликацияТолько метаданныеPulsed laser modification of Al2O3 ceramics to controlling the surface wettability(2021) Gavrikov, A. A.; Shchekin, A. S.; Glazyrina, S. A.; Zhanabaeva, A. K.; Kolchina, A. A.; Marin, D. V.; Petrovskiy, V. N.; Ishkinyaev, E. D.; Щекин, Александр Сергеевич; Марин, Денис Васильевич; Петровский, Анатолий Николаевич; Ишкиняев, Эмиль Дамирович© 2021 Institute of Physics Publishing. All rights reserved.In this paper nanosecond direct laser structuring was investigated for the surface modification of Al2O3 ceramic. A theoretical calculation of the roughness index was carried out according to the Cassie-Baxter model for three different patterns formed on the ceramic surface. The relationship between the assumed area of contact of a water drop with the surface of the material and the contact angle of wetting was investigated. This study shows that surface topography is not the only key factor responsible for surface wettability during nanosecond direct laser structuring.
- ПубликацияТолько метаданныеEffects of laser treatment modes on the parameters of the hardening zones and the wear resistance of steel 40Cr(2020) Biryukov, V. P.; Petrovsky, V. N.; Panov, D. V.; Ushakov, D. V.; Петровский, Анатолий Николаевич© Published under licence by IOP Publishing Ltd.The paper presents the results of metallographic and tribological studies of laser hardening zones of steel samples. A full factorial experiment on laser hardening with a change in the distance from the focal plane, radiation power and processing speed was carried out. The regularities of changes in the depth and width of the quenching zones are obtained from the regression equations. With low-frequency transverse scanning of the laser beam up to 100 Hz, the hardening zones with a width of 20 mm and a depth of 1.4-2.0 mm in one pass were obtained. The wear resistance of the hardened zones is 3.68 times higher than the base material.
- ПубликацияТолько метаданныеExperimental and computational determination of hardened zones during laser hardening of steels(2020) Savin, A. P.; Biryukov, V. P.; Prince, A. N.; Panov, D. V.; Petrovsky, V. N.; Ushakov, D. V.; Петровский, Анатолий Николаевич© 2020 Institute of Physics Publishing. All rights reserved.Experiments in defocus of beam rectangular-shaped fiber laser in the range of 30-65 mm. using a full factorial experiment, we constructed the surface to depth and width of the zone of hardening through varying the speed of the beam in the range of 15-20 mm/s, power 3-4 kW. Comparative wear tests have shown that laser hardening with a rectangular spot reduces the number of tempering zones and increases the wear resistance of 40Cr steel by 25-35% compared to hardening with a round spot.
- ПубликацияОткрытый доступHardening of steel with a defocused and oscillating laser beam(2020) Biryukov, V. P.; Panov, D. V.; Petrovsky, V. N.; Ushakov, D. V.; Петровский, Анатолий Николаевич© Published under licence by IOP Publishing Ltd.The paper deals with the process of laser hardening of 40Cr steel samples using fiber laser radiation and transverse sinusoidal beam scanning with a frequency of 200 Hz. A complete factor experiment on laser quenching with changes in the distance from the focal plane, radiation power and processing speed was performed. The regularities of changes in the depth and width of the quenching zones with a defocused and oscillating beam are obtained from the regression equations.
- ПубликацияТолько метаданныеEffect of Laser Treatment on γ-Phase Strength Characteristics in Iron–Chrome–Nickel System Alloys(2021) Blinova, E. N.; Libman, M. A.; Pimenov, E. V.; Umnov, P. P.; Petrovskij, V. N.; Петровский, Анатолий Николаевич© 2021, Allerton Press, Inc.Abstract: A study is performed of the effect intense laser heating has on the strength characteristics of the γ‑phase in iron–chromium–nickel alloys. We show that using laser radiation to heat the initial α-phase to the temperature of the α → γ transformation produces a γ-phase with much higher microhardness and yield stress than those of the equilibrium γ-phase. A possible mechanism of this phenomenon is discussed.
- ПубликацияТолько метаданныеModeling of laser surface modification processes of tool steel to predict the temperature distribution and modification zone(2021) Khriptovich, E. V.; Shiganov, I. N.; Gavrikov, A. A.; Ishkinyaev, E. D.; Voronov, V. D.; Petrovskiy, V. N.; Shchekin, A. S.; Ишкиняев, Эмиль Дамирович; Воронов, Валерий Дмитриевич; Петровский, Анатолий Николаевич; Щекин, Александр Сергеевич© 2021 Institute of Physics Publishing. All rights reserved.Process of metal surface modification during laser treatment requires a long search and control of the treatment technological parameters, depending on the technical requirements imposed on it. The article proposes a method of mathematical modeling of heat transfer during laser processing of the high carbon steel 9HS (equivalent to DIN 150Cr14). The dimensions of the hardening area are calculated with high accuracy by the isotherm of the critical temperature Ac3. The influence of the main technological parameters (radiation power, laser spot diameter, processing speed) on the depth and width of the hardening zone is shown. The paper also presents the use of the build model for the selection of multitrack processing modes to harden high-carbon steel 9HS to the required depth without surface melting.
- ПубликацияТолько метаданныеDetermining the Size of the Hardening Zone by Temperature Fields during Laser Processing(2022) Ishkinyaev, E. D.; Khriptovich, E. V.; Voronov, V. D.; Petrovskiy, V. N.; Shiganov, I. N.; Ишкиняев, Эмиль Дамирович; Воронов, Валерий Дмитриевич; Петровский, Анатолий Николаевич
- ПубликацияТолько метаданныеPore healing effect of laser polishing and its influence on fatigue properties of 316L stainless steel parts fabricated by laser powder bed fusion(2022) Panov, D.; Oreshkin, O.; Voloskov, B.; Petrovskiy, V.; Shishkovsky, I.; Петровский, Анатолий НиколаевичPotential application of the additive manufactured (AM) parts is still inhibited by poor fatigue properties. In this work, we applied laser polishing to simultaneously reduce factors that affected the fatigue properties, such as surface roughness and sub-surface porosity. Our findings show that significant porosity reduction in sub-surface area can be achieved with one scan pass without major deterioration of surface quality. The surface quality, sub-surface layer porosity and mechanical properties of the laser polished with pore removing pass and conventionally laser polished samples are compared with as-built samples. Sub-surface porosity reduction effect mainly depends on remelted layer depth. Thus the porosity reduction up to 90% in the sub-surface layer can be achieved. The surface quality of the samples is evaluated by Scanning Electron Microscopy, Optical and Stylus profilometry. Surface roughness decrease is at least 90%. The quasi-static and High Cycle Fatigue (HCF) mechanical characteristics of the samples are studied. The fatigue limit increases by at least 82% after laser polishing. The fatigue limit of samples with introduced pore removing pass is slightly lower than the limit for the conventionally laser polished samples. Difference in fracture mechanics of post-processed and as-built samples after HCF tests is described. © 2022 Elsevier Ltd
- ПубликацияТолько метаданныеDetermination of the Diameter and Depth of Substance Ablation Craters during Nanosecond Laser Pulses Using Computer Modeling(2022) Shchekin, A. S.; Petrovskiy, V. N.; Gavrikov, A. A.; Marin, D. V.; Ivanov, A. A.; Щекин, Александр Сергеевич; Петровский, Анатолий Николаевич; Марин, Денис Васильевич; Иванов, Андрей Анатольевич