Персона: Осинцев, Андрей Вениаминович
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Институт общей профессиональной подготовки (ИОПП)
Миссией Института является:
фундаментальная базовая подготовка студентов, необходимая для получения качественного образования на уровне требований международных стандартов;
удовлетворение потребностей обучающихся в интеллектуальном, культурном, нравственном развитии и приобретении ими профессиональных знаний; формирование у студентов мотивации и умения учиться; профессиональная ориентация школьников и студентов в избранной области знаний, формирование способностей и навыков профессионального самоопределения и профессионального саморазвития.
Основными целями и задачами Института являются:
обеспечение высококачественной (фундаментальной) базовой подготовки студентов бакалавриата и специалитета; поддержка и развитие у студентов стремления к осознанному продолжению обучения в институтах (САЕ и др.) и на факультетах Университета; обеспечение преемственности образовательных программ общего среднего и высшего образования; обеспечение высокого качества довузовской подготовки учащихся Предуниверситария и школ-партнеров НИЯУ МИФИ за счет интеграции основного и дополнительного образования;
учебно-методическое руководство общеобразовательными кафедрами Института, осуществляющими подготовку бакалавров и специалистов по социо-гуманитарным, общепрофессиональным и естественнонаучным дисциплинам, обеспечение единства требований к базовой подготовке студентов в рамках крупных научно-образовательных направлений (областей знаний).
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Осинцев
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Андрей Вениаминович
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17 results
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- ПубликацияОткрытый доступLaser Milling Ceramics Dioxide Zirconium and Disilicate of Lithium(2019) Panov, D. V.; Petrovskiy, V. N.; Ushakov, D. V.; Osintsev, A. V.; Dzhumaev, P. S.; Polskiy, V. I.; Петровский, Анатолий Николаевич; Осинцев, Андрей Вениаминович; Джумаев, Павел Сергеевич; Польский, Валерий Игоревич© Published under licence by IOP Publishing Ltd.The paper considers the possibility of using laser milling technology for precision processing of ceramic samples from pre-sintered and sintered ceramics zirconia and lithium disilicate. To find the best radiation source were compared different lasers. To find highest removal rate with acceptable accuracy was studied influence laser and scanning system parameters on ceramics. Accuracy problem of laser milling was considered. Examples of surfaces of prostheses were made.
- ПубликацияОткрытый доступMicrostructure and mechanical properties of stainless steel 316L obtained by Direct Metal Laser Deposition(2019) Bykovskiy, D. P.; Ishkinyaev, E. D.; Petrovskiy, V. N.; Osintsev, A. V.; Dzhumaev, P. S.; Polskiy, V. I.; Sergeev, K. L.; Shchekin, A. S.; Быковский, Дмитрий Петрович; Ишкиняев, Эмиль Дамирович; Петровский, Анатолий Николаевич; Осинцев, Андрей Вениаминович; Джумаев, Павел Сергеевич; Польский, Валерий Игоревич; Щекин, Александр Сергеевич© Published under licence by IOP Publishing Ltd.The microstructure of 316L stainless steel obtained by layer-by-layer direct metal laser deposition is reviewed. Mechanical tests of the samples were performed in accordance with GOST 1497-84. Studies show that changes in power of laser radiation to grow parts lead to changes in their mechanical properties. The research shows dependencies between the strength characteristics of materials and the power of laser radiation. Causes of the forementioned changes are studied through the analysis of the microstructure. Nanosized inclusions of spherical shape were found in the process of studying the microstructure of materials. A study in the nature of the formation of these inclusions and their effect on the properties of the obtained material was performed.
- ПубликацияОткрытый доступDeformation behavior modelling of lattice structures manufactured by a selective laser melting of 316L steel powder(2020) Isaenkova, M. G.; Yudin, A. V.; Rubanov, A. E.; Osintsev, A. V.; Degadnikova, L. A.; Исаенкова, Маргарита Геннадьевна; Осинцев, Андрей ВениаминовичResearch into the plastic deformation process in the lattice structure produced by selective laser melting (SLM) of powder from 316L austenitic stainless steel was carried out by compression tests along the build direction and perpendicular to it. The resulting stress-strain curve parameters showed anisotropic behaviour of such a structure. Differences in the crystallographic texture of both the bulk and lattice samples were also discovered, so the direct use of the mechanical properties of the bulk materials for calculation of lattice structure deformation behaviour would be incorrect. To overcome this limitation, the crystal plasticity finite element model based on the DAMASK framework was used, and the mechanical properties of the lattice structure material were calculated with respect to the crystallographic texture differences. In turn, the data obtained for the bulk material was used to model the plastic deformation of the lattice structure and these results are in good agreement with the experimental data. Therefore, it is possible to use the bulk material data for forecasting the lattice structure deformation. The resultant model allows for the prediction of the deformation behaviour of the lattice ribs. (C) 2020 The Authors. Published by Elsevier B.V.
- ПубликацияТолько метаданныеDiametral Compression of Short Cylinders with a Central Hole as a Method for Assessing the Tensile Strength of Brittle Materials(2024) Goltsev, V. Y.; Osintsev, A. V.; Plotnikov, A. S.; Polskiy, V. I.; Осинцев, Андрей Вениаминович; Польский, Валерий Игоревич
- ПубликацияТолько метаданныеDetermination of the Mechanical Properties of the Materials Produced by Electric Pulse Powder Consolidation(2020) Grigor'ev, E. G.; Plotnikov, A. S.; Smirnov, K. L.; Gol'tsev, V. Y.; Gribov, N. A.; Osintsev, A. V.; Осинцев, Андрей Вениаминович© 2020, Pleiades Publishing, Ltd.Abstract: The field of applicability of bending of thin disks test on an annular support and the “Brazilian test” for short cylinders is discussed. These methods are used to determine the tensile strengths of the materials formed by electric pulse powder consolidation. These techniques of testing small samples make it possible to study the influence of technological factors on the strengths of the consolidated materials.
- ПубликацияОткрытый доступComparison of two test methods for bending small disks on an annular support(2020) Grigoriev, E. G.; Sedegov, A. S.; Yu, Goltsev, V.; Osintsev, A. V.; Plotnikov, A. S.; Осинцев, Андрей Вениаминович© Published under licence by IOP Publishing Ltd.Two methods of bending thin disks on an annular support are compared. The methods differ in the type of loading indenter and the equations that determine the strength of the material by the test results. The end surfaces of the indenter are flat cylindrical (indentor 1) or spherical (indentor 2). The methods were used to test identical disc samples from model materials: Cast iron and graphite, as well as aluminum oxide samples obtained by spark-plasma sintering. The results of testing 24 disks of model materials and 10 disks of aluminum oxide on the ring support are presented. Bending diagrams of 12 disks of each model material on the annular support using two types of indentors indicate their different tensile strength. The calculated values of strength and their spread were higher when using indenter 2 than when using indenter 1. Thus, comparative tests have shown that the calculated strength of the tested materials depends on the nature of the failure of the samples and the type of bending diagram. The most reasonable were the test results obtained with the use of a flat-tipped indenter, which coincide with the characteristics of the strength of materials and the minimum spread of values.
- ПубликацияТолько метаданныеApplication of the "brazilian test" to determine the strength of materials obtained by electric pulse consolidation of powders(2019) Grigor'Ev, E. G.; Goltsev, V. Y.; Gribov, N. A.; Osintsev, A. V.; Plotnikov, A. S.; Осинцев, Андрей Вениаминович© 2019 IOP Publishing Ltd. All rights reserved.Testing of short cylinders according to the "Brazilian test" scheme is considered as a method of assessing the tensile strength of brittle materials obtained by electric pulse consolidation of powders. The paper presents a calculated using FEM and an experimental analysis of the behavior of short cylinders (thick disks) when loaded according to the "Brazilian test" scheme. The calculation shows the weak influence of the disk thickness on the average and maximum tensile stresses in the plane of symmetry of the disk. Results of testing of small samples made of cast iron and graphite are presented. It is shown a good correspondence between the results of the test samples from cast iron when using formula recommended by the ASTM Standard D3967-95a, and the strength of the material when tested in tension. The results of testing samples of graphite were 1.5-2 times less than its tensile strength. The results of testing of small-size samples of heavy alloy WNiFe and aluminum oxide obtained by electric pulse consolidation of powders are presented. The influence of the pressure and current pulse on the fracture resistance of the alloy WNiFe and the sample thickness on the strength of Al2O3 is investigated. Thus, the possibility of testing small samples according to the "Brazilian test" scheme to determine the tensile strength of materials obtained by electric pulse consolidation of powders is demonstrated.
- ПубликацияТолько метаданныеApplying Scanning Contact Potentiometry for Monitoring Incipient Cracks in Steels(2019) Surin, V. I.; Polskij, V. I.; Osintsev, A. V.; Dzhumaev, P. S.; Сурин, Виталий Иванович; Польский, Валерий Игоревич; Осинцев, Андрей Вениаминович; Джумаев, Павел Сергеевич© 2019, Pleiades Publishing, Ltd. The processes of formation and growth of an incipient crack in EI847 steel have been studied by uniaxial constant-load tension testing on an INSTRON-5982 tensile testing machine using scanning contact potentiometry. The nucleus was detected at the sample surface within the yield strength domain and was stably monitored based on the readings of apparatus under higher loads until the moment of destruction.
- ПубликацияТолько метаданныеEvaluation of tensile strength of nuclear fuel samples(2019) Goltsev, V. Y.; Osintsev, A. V.; Осинцев, Андрей Вениаминович© 2019 IOP Publishing Ltd. All rights reserved.For estimation of the strength of the nuclear fuel material as well and for further refinement of nuclear fuel test technology we propose to use small discoid samples, similar in shape to the elements of nuclear fuel in the context of "Brazilian test". We present here the results of testing small discoid specimens with and without center hole, made of brittle materials, such as cast iron and graphite (both being considered as possible model materials for the nuclear fuel). We compared these materials to nuclear fuel itself (as represented by uranium dioxide). The type of deformation and fracture found in samples made from cast iron suggests that this material cannot be used as a model for the nuclear fuel. In addition, the effect of the specimen size on resistance to destruction was investigated. The results obtained in tests on samples of graphite ARV-1 were in good agreement with the results of tests on uranium dioxide. Using the data obtained in this study, a calculation formula for determining the strength of the nuclear fuel material based on the "Brazilian test" results is proposed.
- ПубликацияТолько метаданныеTensile strength of materials obtained by electric pulse consolidation of powders(2019) Grigor'Ev, E. G.; Goltsev, V. Y.; Gribov, N. A.; Osintsev, A. V.; Plotnikov, A. S.; Осинцев, Андрей Вениаминович© 2019 IOP Publishing Ltd. All rights reserved.The article investigates the possibility of determining the resistance to fracture of materials obtained from powders by electric pulse consolidation method using the test method for bending thin disks on an annular support and testing short cylinders according to the "Brazilian test". Techniques are verified by testing small-sized thin disks and short cylinders made of gray cast iron and graphite. It is revealed a difference in the nature of the destruction of cast iron samples (plastic failure) and samples of graphite (brittle fracture). The good correspondence of the characters of destruction of graphite samples and samples produced from powders by the electric pulse consolidation is shown. The influence of various additives and manufacturing technology of materials on the resistance of the material to brittle fracture is revealed. The optimal modes of high voltage consolidation a heavy alloy based on the results of tests of short cylinders according to the "Brazilian test" scheme were obtained. The effect of the thickness of the cylinders on the strength of aluminum oxide Al2O3 is investigated.