Barnaul, Russia

The leading scientific university of the Altai region, Altai State Technical University is one of a number of universities of the city of Barnaul, Altai Krai, Russia. It is one of the largest institutions of higher learning in Russia.It was founded in February 1942 based on the Zaporozhye Engineering Institute. Altay State University was named after Ivan Polzunov who was the famous Barnaul inventor.The University offers full-time, part-time, extramural and distant training. On graduating students receive degrees of Bachelor and diplomas of specialist. Post-graduate courses are also offered.The facilities of the university include: 7 academic buildings, a complex of hostels, a large scientific library, computing center, publishing house, student clubs, a theater , a preventive clinic, as well as a skiing lodge, sports and rest camp by the river Ob. Wikipedia.

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Filimonov V.Yu.,Altai State Technical University
Current Opinion in Chemical Engineering | Year: 2014

It is well known that the industrial processes of composite materials obtaining are costly and energy-intensive procedures. In the last decades, the method of high-temperature synthesis in mechanically activated powder mixtures is widely used. This method gives an opportunity to realize the synthesis in the solid-state mode of combustion and to obtain the nanostructured products. It is of great importance in terms of industrial needs (obtaining of filters, catalysts, low porosity bulk samples, protective coatings and etc.). In the present paper, the analysis of the modern methods of mechanically activated, nanostructured systems obtaining is presented. The methods of synthesis initiation, analysis of phase formation processes, analysis of some experimental results and current concepts of nanostructured heterogeneous systems combustion are considered. © 2013 Elsevier Ltd. All rights reserved.

Filimonov V.Y.,Altai State Technical University
Combustion Science and Technology | Year: 2014

A new approach for consideration of the self-heating modes during monomolecular exothermic reaction has been proposed. The analysis of reactions in the phase plane heating rate and temperature enables detection of the variety of modes of the heating processes and allows consideration of two dimensional parametric model: Todes criterion and Semenov criterion. This gives the possibility of determining the characteristic regions in the corresponding parametric plane. The new thermokinetic parameters were introduced for the phase trajectories analysis. The characteristic values of parameters (and characteristic temperatures) can be determined at the intersection points of the phase trajectories and boundaries of regions. The analytical expression for the thermal explosion critical conditions, which includes Todes criterion, and the new thermokinetic parameters were obtained for the first-order reactions. The condition of applicability of the classical thermal explosion theory was proposed. It was shown that the classical theory of the thermal explosion is the partial case of the presented model. © 2014 Copyright Taylor and Francis Group, LLC.

Popov A.V.,Altai State Technical University
Crystallography Reports | Year: 2016

Metallic lithium is used to demonstrate the possibilities of applying non-self-adjoint operators for quantitative description of orbital excitations of electrons in crystals. It is shown that, the nonequilibrium distribution function can be calculated when solving the spectral problem; therefore, the kinetic properties of a material can also be described with the unified band theory. © 2016, Pleiades Publishing, Inc.

Savchenko V.V.,Altai State Technical University
CEUR Workshop Proceedings | Year: 2014

This article describes a method of semantic search based on the text processing of large volume. Search requests and processing text from analyzed collection is transformed into a graph of semantic relationships, the comparison of which allows us to define a measure of semantic similarity of compared texts. An algorithm is proposed to calculate the coefficient of semantic graphs concordance. Estimates of the processing time are also given.

Krayvanova V.A.,Altai State Technical University
CEUR Workshop Proceedings | Year: 2014

The paper presents the intermediate results of the research, the final goal of which is to develop the universal algorithm for process diagrams automatic visualization by text description of these processes. The purpose of this study is to check the use of verbs as markers for the semantic labeling of long fragments in scientific texts.

Kikot A.A.,Altai State Technical University
Magazine of Civil Engineering | Year: 2016

A review of literature in research and calculate of cold-formed steel tension members with bolt attachments is presented. Limit States of such members may be: excessive elongation, a rupture in the weakened cross-section along the member, a rupture in the net cross-section with the holes at connection, bearing, block shear. A CFSteel software for calculation of the strength of tension members was developed. The Russian building code SP 16.13330.2011, Eurocode and North American Specification AISI S100 were implemented. It was shown that at short attachments with the number of transverse rows of bolts not exceeding two (in some cases, three) design strength according to the general case of Russian code is not reliable. It was suggested the members with cross-sections similar to channel, to treat as a members consisting of two angles, attached by one leg, and calculate the strength using appropriate formula of SP 16.13330.2011. In the case of member attachment by bolts in the flanges the value of reduction coefficient U and tensile strength for rupture in net section according to standards AISC 360-10 and AISI S100 gives similar results.

Golykh R.N.,Altai State Technical University
Journal of Physics: Conference Series | Year: 2016

Progress of technology and medicine dictates the ever-increasing requirements (heat resistance, corrosion resistance, strength properties, impregnating ability, etc.) for non-Newtonian fluids and materials produced on their basis (epoxy resin, coating materials, liquid crystals, etc.). Materials with improved properties obtaining is possible by modification of their physicochemical structure. One of the most promising approaches to the restructuring of non-Newtonian fluids is cavitation generated by high-frequency acoustic vibrations. The efficiency of cavitation in non-Newtonian fluid is determined by dynamics of gaseous bubble. Today, bubble dynamics in isotropic non-Newtonian fluids, in which cavitation bubble shape remains spherical, is most full investigated, because the problem reduces to ordinary differential equation for spherical bubble radius. However, gaseous bubble in anisotropic fluids which are most wide kind of non-Newtonian fluids (due to orientation of macromolecules) deviates from spherical shape due to viscosity dependence on shear rate direction. Therefore, the paper presents the mathematical model of gaseous bubble dynamics in anisotropic non-Newtonian fluids. The model is based on general equations for anisotropic non-Newtonian fluid flow. The equations are solved by asymptotic decomposition of fluid flow parameters. It allowed evaluating bubble size and shape evolution depending on rheological properties of liquid and acoustic field characteristics.

Lopatkin N.N.,Altai State Technical University
2016 2nd International Conference on Intelligent Energy and Power Systems, IEPS 2016 - Conference Proceedings | Year: 2016

The paper deals with the voltage source multilevel inverter space vector PWM algorithm developed on the base of one of the more general algorithms for oblique-angled coordinates of two delta voltages. The symmetry of the instantaneous output voltages on the clock cycle is provided by the simple control for the performing of the preset five-segment switching sequence. The calculations being used are quite simple and fast so they can be performed even applying a cheap DSP. © 2016 IEEE.

Filimonov V.Y.,Altai State Technical University
Combustion Theory and Modelling | Year: 2015

A novel approach for analysing critical phenomena in exothermically reacting mixtures for arbitrary order of reactions is suggested. Criteria are obtained for the thermal explosion degeneration of reactions characterised by low activation energy (kinetic factor of degeneration) or low heat release (thermodynamic factor of degeneration). Analytical expressions are suggested for the thermal explosion critical conditions taking into account reactants consumption for any reaction order at small values of the Arrhenius parameter (high activation energies). This allows the determination of the characteristic regions in the Todes parameter–Semenov parameter plane and to establish the boundaries of applicability of the classical theory. New thermokinetic parameters are introduced for phase trajectory analysis and a new type of reaction modes diagram is proposed for analysis of self-heating prediction. © 2015, © 2015 Taylor & Francis.

Filimonov V.Y.,Altai State Technical University
Combustion, Explosion and Shock Waves | Year: 2010

A qualitative analysis of structural types of phase trajectories and corresponding thermograms with various values of the Semenov and Todes criteria for systems with intense self-deceleration is performed. A rigorous criterion of degeneration of the thermal explosion is found. Physical mechanisms of various regimes of self-heating processes are analyzed. An approximate functional dependence of the critical value of the Semenov parameter on the self-deceleration parameter is obtained, and the limits of its applicability are determined. © 2010 MAIK/Nauka.

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