bluuebunny/crossref_metadata_2025_split huggingface dataset:
Cutting tool for turning large workpieces
Authors: Khalimonenko A D , Timofeev D Yu , Golikov T S 
Published: December 2019

Abstract
The article analyzes the existing methods of cutting-off large-size workpieces on turning machines and tools of various constructionы for cutting-off operations. The analysis has shown that the process of cutting-off in comparison with the usual processes of operation takes place in the most difficult conditions. In this regard, a new design of cutting tool with a special scheme of fixing a double-sided replaceable cutting insert was proposed.
Method of assembly and adhesive technological equipment automated design
Authors: Meshihin A A , Polyanskov Y V , Zheleznov O V 
Published: December 2019

Abstract
In the production of modern aviation equipment, special attention is paid to reducing the mass of its components and assemblies. To achieve a reduction in aircraft mass without compromising strength and increasing economic efficiency, various composite materials are often used. The manufacture of components and assemblies from such materials entails the design and use of special assembly and adhesive equipment, which provides the necessary accuracy and rigidity to obtain the desired geometric shape of the aircraft structure. This article is devoted to the process of computer-aided design of assembly and adhesive technological equipment for the manufacture of aircraft cellular metal panels from polymer composite materials, using a Siemens NX CAD system.
Diffusion metallization of carbide cutting tools as a way to improve the surface treatment quality
Authors: Bobylyov E E , Storozhenko I D 
Published: December 2019

Abstract
The application of diffusion nicke-copper coatings on hard alloys leads to an increase in the durability of carbide-tipped cutting tools when machining even hard carbide-containing steels at the high cutting speeds, which improves the productivity of the machining process. The analysis of the influence of deposition of nicke-copper coating by the diffusion metallization from environment of the fusible liquid metal solutions at the resistance of alloy carbide inserts of type WC-Co and TiC-WC-Co, and to the quality of the processing of hard alloy high viscosity has been performed.
Improvement of wear resistance of austenic steels by applying of carburization and diffusion saturation in liquid metal media solutions
Authors: Sokolov A G , Bobylyov E E 
Published: December 2019

Abstract
The technology of the increase of wear resistance of austenitic steel products by combining the technologies of carburization and diffusion alloying in the medium of fusible liquid metal solutions has been described. The preliminary and subsequent carburization led to increase of surface layers microhardness of coated material to 5600 MPa. At the same time, the depth of the doped layer can reach 420 microns.
Control of the technological process of the waveguide paths induction soldering in the framework of Industry 4.0
Authors: Tynchenko V S , Milov A V , Bukhtoyarov V V , Kukartsev V V , Tynchenko V V , Bashmur K A 
Published: December 2019

Abstract
The control of the induction soldering technological process is significantly complicated by the presence in the heating zone of physical phenomena that make it difficult, and sometimes completely impossible, to measure the temperature in the heating zone using non-contact temperature sensors. At the same time, the use of contact sensors is also difficult in the production of spacecraft’s elements due to the high requirements for the quality of the product surface, as well as the high time required for the installation of contact sensors and the human factor. This paper presents the concept of a cyber-physical system for controlling the technological process of induction soldering of spacecraft waveguide paths in the framework of Industry 4.0, which is actively developed at the enterprises of the rocket-space complex. As a part of this concept implementation, it is proposed to develop mathematical models for each element of the waveguide assembly separately, and for the entire assembly of the waveguide path. The use of mathematical models developed within the framework of this concept will make it possible to improve the quality of the induction heating process control using adaptive and intelligent methods.
The use of adaptive matching circuits to adjust the impedance of high-frequency loads
Authors: Samoylov A G , Samoylov V S , Samoylov S A 
Published: December 2019

Abstract
The article discusses methods for matching high-frequency oscillators with variable load. Adaptive impedance tuning methods are described. The results of the experiments are presented. Shown, that losses of high-frequency energy by its transfer to variable loading decrease more than by 10 dB.
Automated detection of deforestation based on multi-spectrum satellite data
Authors: Mozgovoy D K , Svinarenko D N , Leong Y R , Zhigalov K Y , Tsarev R Y , Yamskikh T N , Bystrova N V 
Published: December 2019

Abstract
A brief description and the results of experimental testing of a technique for automated processing and analyzing multispectral satellite images of medium and high spatial resolution with the aim of detecting and assessing the dynamics of large logging areas in the territory of the Republic of Kazakhstan are presented. More than 50 large logging areas of about 100 hectares were detected in the selected monitoring site (district of Kokshetau, Akmola territory).
Deep learning and its role in smart agriculture
Authors: Magomadov V S 
Published: December 2019

Abstract
Deep learning is a data analysis and image-processing method, which has recently gained a lot of attention as a tool, which has great potential and promising results. There are many different fields that deep learning has been applied to and it is also being applied to the field of agriculture. The purpose of this paper is to explore deep learning in terms of agriculture and food production. The performance of deep learning in agriculture is the focus of this paper comparing it to other existing artificial intelligence models, which have been used in agriculture. In addition, several types of deep learning models are covered and their differences are explained. The paper explains why some deep learning models are better equipped to be used in the field of agriculture than other models.
Disk brake contact analysis utilizing Ansys
Authors: Magomedov I A , Magomedov A A , Magomadov V S , Tahaev U R , Alikhadzhiev S Kh , Ibragimova L V 
Published: December 2019

Abstract
the following work looks into contact analysis of braking system using Ansys software. The work starts from brief introduction and literature review on squeal propensity problem. Coefficient of friction variations between pads and disc of braking system were analyzed to gather information on pressure distribution. Results of the analysis illustrated that by increasing coefficient of friction tendency of pressure distribution will shift toward leading edge.
Modeling heat transfer in a well network
Authors: Feodorov A B , Afanasov V I , Lunev A S , Spirin T S , Kurochkin E S , Zagorulko A J 
Published: December 2019

Abstract
Model representations are used to analyze the technological process of alternating the appointment of wells. The role of producing and injection wells alternates. The purpose of this technology is to reverse heat fluxes. Changing the direction of heat fluxes is a way to preserve the phase state of frozen soils. The development of hydrocarbon deposits in the extreme north requires the preservation of perennial frozen soils in a solid state. These are safety requirements. In an injection well, it is easier to build a process for injecting refrigerant into the top of the well. When using packers to separate the indicated portion, the process of pumping water to maintain reservoir pressure may continue in the usual manner. Packers are installed on the lower boundaries of frozen soils. Perennial frozen soils are cooled an order of magnitude slower than heating. It is promising to use rock fracturing and faults to penetrate the refrigerant. Normal refrigerants are used. Gaseous refrigerants are preferred. After the heating stage of adjacent rocks, they have increased permeability. The product of thermal reverse uses this circumstance. Refrigerant penetration is simplified. And in turn, it leads to blockage of the formed network of microchannels. The convection method of heat exchange is cut off. The convection heat transfer process is responsible for most of the heat fluxes. A sharp change in heat fluxes occurs immediately after the reverse. The proposed technology allows you to use an additional option for the operation of the existing layout of wells in the oil and gas field. The usual practice of the operation of the fishery may remain without noticeable changes. Using existing gas preparation equipment simplifies the implementation of the technology.
Mathematical model of adhesion junction of layers during coextrusion
Authors: Dyadichev A V , Dyadicheva E A , Kolesnikov A V , Dyadichev V V , Menyuk S G , Chornobay S Ye 
Published: December 2019

Abstract
Nine theories of polymer adhesion during coextrusion are researched. Two approaches to describing adhesion are presented – thermodynamic and molecular-kinetic ones. The factors, determining the durability of adhesion junction, are analyzed. The stages of adhesion connection formation are presented. The adhesion junction emergence model as a result of intermolecular interaction is described. As a result of calculations the following dependencies are got: the dependence of ply separation energy on the contact length of polyisobutylene adhesion junction of different molecular weight, the dependence of ply separation energy on molecular weight of polyisobutylene adhesion junctions got during different time, the dependence of adhesion durability on squared difference of polymer solubility parameters, the dependence of interdiffused zone width in the time.
Technological features of aircraft engine repair in digital production
Authors: Bolotov M A , Grachev I A , Kudashov E V , Pechenin V A , Pronichev N D 
Published: December 2019

Abstract
The article analyzes the problems arising during the repair of gas turbine engines. Based on the analysis of problems, a gas turbine engines rotor repair scheme is proposed using virtual assembly technology. The proposed scheme will allow to reduce the cost and to increase the efficiency of repair work. Example of gas turbine rotor repair using virtual assembly technology is considered. The results of predicting the dimensional accuracy of assembly parameters based on the simulation of parts with real geometry are presented.
Chemical reactions at high-speed HFC-boriding
Authors: Ishkov A , Malikov V 
Published: December 2019

Abstract
Strengthening of machine parts and units, increased reliability and longer service life is an important task of modern industry. As promising materials for protective-strengthening coatings, matrix composites based on the ternary system Fe-B-FenB are offered. The article proposes the complex heating of steel being borated and imbued medium by high frequency currents (HFC). We also proposed to combine the diffusion boriding from liquid and solid media and the transition of the diffusion boriding to chemical interaction between the elements of Fe and B. We determined the main components of the reaction-boronizing system, as well as their roles and possible processes that lead to the implementation of topochemical boriding initiated by HFC-heating. We confirmed the course of the reaction leading to the occurrence of reducing agents Ca, Si and active boron in the boronizing mixture.
Spectral characteristics and biological activity of synthetic humic-like substances on the basis of carbohydrates
Authors: Cherepanov I S 
Published: December 2019

Abstract
The study of the structure and properties of synthetic analogues of humic substances is an important research task. This paper presents the results of studying the structural and group composition of the products of water-soluble fractions synthesized in the D-glucose - m-aminobenzoic acid and D-glucose - p-toluidine reaction systems using electronic and vibrational spectroscopy. The IR-Fourier transform spectroscopic study shows the similarity of the structural-group composition of the selected products with those for humic and humic-like substances of different origin. The study of growth-regulating ability confirms its presence for the products of both systems, while the aromatic fragments of m-aminobenzoic acid impart higher stimulating activity to the substances. Analysis of the structural-group composition of the products obtained in the framework of computer modelling suggests their potentially non-toxic nature, which makes further research in this direction promising.
A method of reducing the amount of fuel gas during operation of the oil fire furnaces
Authors: Shram V G , Shushenacheva M A , Kovaleva M A , Lysyannikova N N , Lysyannikov A V , Kravtsova E G 
Published: December 2019

Abstract
The rational use of resources and energy in the oil refining process is largely determined by the efficiency of the technological equipment. In the conditions of the Far North, with a sharply continental climate, at low negative temperatures, the operation of technological furnaces is carried out with very high energy consumption, which indicates the use of equipment in suboptimal conditions. Loss reduction is possible due to heat recovery through the use of heat from combustion products, through heat exchange between product streams and the use of low potential waste heat. In this work, an analysis of the operation of a technological oil heating furnace was carried out, the main parameters affecting the consumption of fuel gas were identified, a method for reducing the cost of natural fuel gas by introducing a recuperator was proposed.
Prediction life of lubricants on the analysis of experimental data on their optical density
Authors: Shram V G , Agafonov E D , Lysyannikov N N , Lysyannikov A V , Kovaleva M A 
Published: December 2019

Abstract
The paper presents the results in the field of research and analysis of the optical density of motor oil using mathematical and intelligent models. The quadratic approximations of the dependence of optical density on time are obtained for three different temperatures of temperature control. It is established that each curve of the change in optical density with time contains an inflection point. On the basis of which it was hypothesized that these moments correspond to a certain phase transition in the oil under study. A three-dimensional model of dependence of the rate of change of optical density on temperature and test time was also constructed. When analyzing this dependence, the character of the inflection curve is established, which is proposed as an indicator indicating the attainment of the limiting resource of lubricating oils.
Efficiency of using solar electric panels with grid-tie inverter for public buildings
Authors: Platonova E V , Chistyakov G N , Toropov A S , Kolovsky A V , Bayshev A V 
Published: December 2019

Abstract
It is shown that the operation of solar electric panels in the Republic of Khakassia of the Russian Federation should be carried out without power output to the grid. The scheme of connecting a solar power station to an existing building network and power station equipment were selected. A methodology for calculating the power of the inverter and solar panels was developed and applied based on the building’s electric load schedule. Electricity rates for public buildings were analyzed. The discounted payback period for the use of a solar power station in parallel with the power grid was calculated. The applicability of solar panels operating in parallel with the power grid for public buildings of the Republic of Khakassia of the Russian Federation was revealed. Conclusions are made based on research results.
The results of the study of the mechanism of oxidation of motor oil
Authors: Kovalsky B I , Shram V G , Bezborodov Yu N , Petrov O N , Lysyannikova N N , Kravtsova E G 
Published: December 2019

Abstract
The results of the study of the oxidation and evaporation of a partially synthetic Total Quartz 10W-40 SL/CF synthetic engine oil in the temperature range from 160 to 190 °C are presented. The rates of increment of the processes of oxidation and evaporation from the time and temperature of the test, as well as the critical temperatures and temperatures of the onset of these processes, are determined. A grapho-analytical model for predicting thermal-oxidative stability indicators in a wider temperature range of test temperatures is proposed.
Wave formation in a two-layer liquid under the action of a source
Authors: Mikishanina E A 
Published: December 2019

Abstract
The article is devoted to the construction of an analytical algorithm for solving the problem of the formation of waves in a two-layer liquid from a source located in the upper layer. In the course of the solution, the problem is reduced to a boundary value problem for a system of differential equations with respect to the velocity potentials of the perturbed flow of liquids, which was divided into three simpler boundary value problems. Expressions characterizing the evolution of the free boundary and the line of separation of media were also obtained. Conclusions are drawn about the influence of density difference, layer depth and power of the source on the wave formation process.
The method of accident reconstruction according to the parameters of the braking process of M1 category vehicle under the conditions of the North-West region
Authors: Afanasyev A S , Evtyukov S A , Chudakova N V 
Published: December 2019

Abstract
The article analyzes the number of accidents and measures that implement the reduction of mortality on the roads. The authors proposed a set of factors that must be taken into account when reconstructing an accident according to the parameters of the braking process of M1 category vehicles, such as: the actual load of the vehicle, modern complexes of car active safety systems (ABS, EBD, ASR, BAS), a trailer of up to 750 kg, the condition of the road surface coverage and seasonality of tires in the conditions of the North-West region. The results of experimental studies of the actual values of the steady-state deceleration and its rise time are presented, confirming the regularity of the influence of the studied factors. Coefficients have been developed that correct the recommended normative values of steady-state deceleration and rise time. The method of accident reconstruction according to the parameters of the braking process of M1 category vehicles is proposed, which allows more objective and reliable expert research and provides the ability to establish real cause-effect relationships for the occurrence of accident.
Improving the environmental performance of a diesel engine using natural gas and exhaust gas recirculation
Authors: Likhanov V A , Lopatin O P 
Published: December 2019

Abstract
The study of the environmental performance of diesel engines running on natural gas in a wide range of operating conditions is relevant for the further implementation of their transport and transport-technological machines. The paper deals with the use of natural gas as an alternative fuel to improve the environmental performance of a diesel engine. The results of experimental studies on the effect of natural gas and exhaust gas recirculation on the toxicity and smokiness of diesel engine exhaust gases are presented. It is noted that when the diesel engine is running on natural gas with exhaust gas recirculation, the content of nitrogen oxides (NOx) in the exhaust gases decreases by 43.2%, soot (C) by 5.6 times, carbon dioxide (CO2) by 33.3%, carbon oxides (CO) by 10.0%.
Numerical investigation of the ethylbenzene dehydrogenation reaction in a fixed bed reactor with catalyst granules of various sizes
Authors: Solovev S A , Soloveva O V , Gilmurahmanov B Sh , Lamberov A A 
Published: December 2019

Abstract
In this work, we get a numerical simulation analyzes the effect of catalyst granule size on the operation efficiency of the fixed bed reactor for the dehydrogenation of ethylbenzene to styrene. For the laboratory reactor, we built a detailed model of cylindrical catalyst granules with a length of 3 mm, 6 mm and 9 mm. We carried out an analysis of the granule size effect on the bed characteristics, such as porosity and the catalyst total surface area. We obtained results for a wide range of feed gas rates. The ranges and rates of the catalyst efficiency decrease for different feed gas rates are determined.
Determination of the mutual entrainment of the extractant and the aqueous phase in the extraction of rare-earth elements from the technological phosphoric acid solution
Authors: Lutskiy D , Cheremisina O , Ponomareva M , Ignatovich A 
Published: December 2019

Abstract
The data on the distribution of orthophosphoric acid in the system di - (2-ethylhexyl) phosphoric acid (D2EHPA) – H3PO4 – H2O was obtained. The mutual losses of the extractant and the aqueous phase in the extraction of rare-earth elements occur from phosphoric acid using D2EHPA. The quantitative characteristics of redistribution between the aqueous and organic phases was determined. The composition of solvates in extracts was established at different equilibrium concentrations of orthophosphoric acid in the aqueous phase. The obtained data allow us to make changes in the technological process, which will allow us to obtain cleaner REEs after extraction and reduce the concentration of extractant in water effluents.
Concept of control and data acquisition system for modern digital power substation
Authors: Dmitriev A A , Gerasimov V E 
Published: December 2019

Abstract
The article deals with the issue of standardization of approach to definition of modern digital substation is considered. The approaches proposed and partially implemented by equipment manufacturers are described, such as data collection and processing by means of relay protection and automation with the use of proprietary algorithms, wireless and optical current and voltage sensors, etc. The authors propose the use of a unified system for collecting and processing data generated and used in the operation of an electric substation. The structure of the signal transmission system for the main groups of electrical power equipment is described, the requirements for the predictive diagnostics system that allows maintaining the equipment based on its technical condition are described.
Determining the number of redundant elements of the distribution network in compliance with the specified amount of information entropy
Authors: Dulesov A S , Karandeev D J , Khrustalev V I , Dulesova N V , Krasnova T G 
Published: December 2019

Abstract
A mathematical economic model for searching an optimal solution is proposed. In addition, a measure of information uncertainty is proposed to solve the problem the construction of a distribution network structure with the redundancy. In the model, there is an objective function for searching minimum costs and the equations for determining an information entropy of operable and non-operable states of the distribution network. The equations are based on the approaches of Ralph Hartley and Claude Shannon for entropy determination. An important place in the mathematical model is the process of constructing of a constraint function to search an optimal solution. The right part of constraints is entropy, its value reflects requirements to provide the required reliability level of power supply of the consumer. The left part is used to determine the connection entropy between an energy source and the consumer. An example of determining the number of redundant elements is offered.