bluuebunny/crossref_metadata_2025_split huggingface dataset:
Measurement of oxide coating thickness in the micro-arc oxidation process
Authors: Golubkov P E , Pecherskaya E A , Zinchenko T O , Baranov V A , Kozlov G V , Shepeleva Y V 
Published: May 2020

Abstract
The requirements to methods for measuring the oxide coatings thickness are formulated, allowing measurements to be carried out directly in the process of their formation in real time, which is a necessary condition for the controlled synthesis of coatings with desired properties. Based on a systematic approach, the existing methods for measuring the oxide coatings thickness and their metrological characteristics are analyzed. As a result, it was found that the most suitable for measuring the oxide coatings thickness during micro-arc oxidation are electrical methods, which include the method proposed by the authors based on a frequency integrating scanning transducer. The method proposed by authors allows to measure the thickness of the oxide layers directly in the process of their formation with high accuracy. This method is implemented in an intelligent automated system for the controlled synthesis of oxide coatings.
Using the new configuration of the current transformer as a safe current meter
Authors: Klimenko Xenia A 
Published: May 2020

Abstract
The normal functioning of energy systems cannot be achieved without solving the most important issue, which can be formulated as a reliable and safe measurement of electric current. For this purpose, an industrial current transformer is most often used, which has a number of significant disadvantages during operation. These deficiencies can be corrected using an improvement in the design of the current transformer. The device of a similar current transformer, the results of studies of the electromagnetic field of an industrial current transformer and a current transformer with an improved configuration are presented in this article. In addition, the results of the experiments of the samples under study are set out, suggesting the possibility and preference of using a similar design of current transformers for measuring single-phase current of industrial frequency.
Electrolyte plasma treatment in crossed electric and magnetic fields
Authors: Mingazhev A D , Krioni N K , Panin A I , Gafarova V A 
Published: May 2020

Abstract
Providing reliability and durability of gas turbine parts is closely connected to the necessity of constant improvement of its treatment technologies especially on final operations. Forming the required quality of multiprofiled part surface layer quality provides for overcoming a list of technological issues. One of these issues is provision of set operational characteristics of gas turbines parts with perforations.
Spectral method for monitoring the technical condition of hydraulic drives of forest harvester machines
Authors: Pavlov A I , Tarbeev A A , Egorov A V , Polyanin I A , Ya Alibekov S , Lysyannikov A V , Kaizer Yu F , Sharshembiev J S 
Published: May 2020

Abstract
Currently, in the forest industry, methods of test control of the technical condition of the elements of the hydraulic drive of forest harvester machines have been used, based on the creation of special impulse actions on the hydraulic drive in order to obtain transient characteristics, the analysis of which allows to determine their technical condition. However, these methods can only be used for maintenance or repair of machines. Analysis of the work performed to date shows that the task of developing and developing methods for monitoring the state of hydraulic drives of technological machines is an urgent task. This article presents the justification of the spectral method for monitoring the technical condition of hydraulic drives of forest harvester machines during the full life cycle, based on the control of its load when operating with woods.
Metrological support characteristics for life cycle of agricultural machines
Authors: Bondareva G I , Evgrafov A V , Yu Ermolaeva A 
Published: May 2020

AbstractStatements stated in this paper prove the essential role of the influence of metrological support on the quality parameters of complex equipment at each stage of the product life cycle. When designing aggregates and technological units, it is necessary to ensure the given accuracy of the sensors, while manufacturing technology, significant savings can be achieved due to the use of a more expensive and accurate measuring instrument. When operating machines, constant monitoring of power consumption, fuel, productivity, speed and other technological parameters with a given accuracy is required.
A logical model of the distributed corporate network of an insurance company
Authors: Kh Irzaev Gamid , Adeeva Mariam G , Gadzhieva Naida M 
Published: May 2020

Abstract
In the context of hardware heterogeneity and the use of multi-platform software in insurance companies, it is necessary to develop specific schemes for the implementation of a distributed corporate network. This article proposes a logical model of an information and communications network built in the form of subnetworks of two types: a head office and branches of an insurance company. The proposed recommendations include the application of special adaptive traffic routing and service technologies, overload control through constructing virtual channels and introduction of packet queues optimization policies.
Control of indexes of thermal-oxidative stability of mineral engine oil in severe service conditions
Authors: Afanasov V I , Lunev A S , Sokolnikov A N , Vereshchagin V I , Abramov V V 
Published: May 2020

Abstract
The power units of quarry machinery use hydraulic fluids having various bases. That increases the temperature range of the use of this equipment. The cornerstone affecting oil life is the boundary layer temperature on the friction surface while in operation. The catalysts of combustion are oxygen, destruction, and chemical reaction if the oil comes in contact with the metal.
Modernization of a tractor motor for diesel combustible and methanol
Authors: Anfilatov A A 
Published: May 2020

AbstractWhen carrying out research to improve the environmental performance of motors, attention should be paid to reducing the nitrogen oxide content of the effluent gases, since they are the most toxic components among the entire range of polluting chemical compounds contained in exhaust gases, since they are formed in the burning process as a result of chemical reactions atmospheric oxygen and nitrogen. The most effective way of using methanol in internal burning engines is now to feed it directly to the diesel cylinder using a dual combustible supply system, which allows replacing up to 80% of the diesel combustible. The ignition of methanol in this case is due to the supply of a seed portion of diesel combustible. This method, with some changes and additions to the design of the motor, can be implemented on engines already in operation. In this paper, the effect of methanol application on the volumetric content and mass concentration of nitrogen oxides in exhaust gases calculated on the basis of the results of experimental studies of a motor of 2H 10.5 / 12.0 air cooling with a hemispherical burning chamber in a piston using a dual combustible delivery system and injection of diesel combustible (ignition) through a multi-jet nozzle, depending on the change in load.
Control of geometric characteristics of surface micro-relief in metal turning using nanodiamond powders
Authors: Petrovsky E A , Bashmur K A , Tynchenko V S , Bukhtoyarov V V , Bizyukov N V , Kukartsev V V 
Published: May 2020

Abstract
The study analyzes the impact of different technological agents on the surface purity during metal turning. New technological lubricants consisting of organic compounds are studied. In the agents nanodiamond powder is used to intensify the metal turning processes. The agent is fed into the sample’s turning zone while affecting the purity of the surface. The impact of the agent on the surface layer quality in the processing of heat-resistant steels and alloys is investigated. The optimal composition of the agent is revealed when turning one or another material. The tests established the positive effect of the agent on the quality of the treated surface and other parameters of the turning processes of various metals and alloys.
Metrological assurance of the research on corrosion characteristics of magnetic nanodispersed lubricants
Authors: Bolotov A N , Novikov V V , Novikova O O 
Published: May 2020

Abstract
The paper proposes a new metrological assurance to study functional properties of promising magnetic lubricants: liquids and oils. They contain chemically active components to improve their triboengineering characteristics and therefore cause corrosion of solid surfaces interacting with them. The proposed method for assessing corrosion activity of magnetic lubricants takes into account all conditions of chemical corrosion during friction. A metal filament, in which cyclic electric current and a magnetic field create alternating tension stresses and a temperature similar to the real one in the frictional contact area when using a magnetic fluid tribonode, undergoes corrosion in the magnetic medium. The theoretical justification of the method has two different cases of filament fixation. The nature of the filament movement and its tension under the influence of alternating Ampere’s force and alternating sign current pulses is analyzed. There is a diagram of a device for assessing corrosion activity of magnetic lubricant nanodispersed materials. There is a performance evaluation of the proposed method and an experimental research on the effect of corrosive magnetic and non-magnetic lubricating media on a solid copper surface. It is established that the excess of free surfactant in PES-5 organosilicone liquid and its magnetic oil is negative.
Investigation of micromechanical properties of fused alumina and silicone carbide grains
Authors: Pushkarev O , Bagaiskov Yu 
Published: May 2020

Abstract
Micromechanical properties of abrasive material grains of fused alumina and silicone carbide are investigated applying the microindentation method. Such parameters as microhardness, microbrittleness, and microstrength were evaluated depending on the penetration depth of the Vickers diamond pyramid to the 0.5 — 5.0 µm thick surface under analysis. The microhardness parameter is the stress required for formation of a brittle failure area within the pyramid imprint. The microbrittleness criterion defines the ratio of the brittle failure area within the imprint and the imprint area. The power-law dependence of the parameters on the pyramid penetration depth is established: the lower the depth, the higher are microhardness and microstrength, yet the lower is microbrittleness. The obtained results enable creation of a standard basis, forecasting of the performance level of abrasive tools, refractory and wear-resistant items, filters, and special ceramics.
Soft measurements in technological processes control
Authors: Vershinina L P , Vershinin M I 
Published: May 2020

Abstract
Intelligent information and measurement systems, microprocessor control of measurement procedure cause increasing role of metrological aspect in technological process control. The role of soft measurements in improving the methodological base of measuring systems is shown. Examples of the implementation of the concept of soft measurements and calculations in the development of mathematical support of automated technological process control system for the production of radio electronic means are given.
Method of diagnostics of the rotor eccentricity of an induction motor
Authors: Yu Prudnikov A , Bonnet V V , Yu Loginov A 
Published: May 2020

Abstract
The main type of electric motors used in the electric drive of technological processes are induction motors with a squirrel-cage rotor. With proper operation, they have a higher MTBF (Mean Time Between Failures). It was found that one of the common causes of engine failure is bearing wear and, as a result, increased rotor eccentricity. We used the oscillating amplitude of the rotor speed in the transient state as a diagnostic parameter. The paper presents a method for this troubleshooting, a block scheme and appearance of the experimental installation, and a single-line diagram of the transmitter for measuring rpm. The experience has established the optimal ADC sampling frequency for experimentation to be carried out. The results of studies of changes in the rotor speed oscillating from time to time under load at rotor eccentricity have been given.
Analytical research of heat and mass transfer in bulks of food raw materials in the presence of self-heating hearths
Authors: Alekseev G V , Voronenko B A , Egorova O A , Leu A G , Goncharov M V 
Published: May 2020

Abstract
The article provides a more accurate analysis of the heat and mass transfer mode in conditions close to the actual storage of most types of agricultural raw materials. The issues of improving metrological support are most acute in industries that traditionally use fuzzy logic approaches. Organoleptic methods that are common in the food industry, in particular when analyzing the quality of agricultural raw materials after storage, often lead to significant losses and affect the overall performance of agricultural industry in total. Thus, the subject of the article is of interest to both developers of the corresponding measuring equipment and employees of food industries. The article considers the problem of storing bulk food raw material in cylindrical silos with moisture and heat insulated side and moisture insulated end surfaces. The analytical solution of the appropriate boundary value problem is obtained by the Laplace integral transformation method. The obtained analytical solutions are convenient for engineering calculations and can be used to determine the temperature at each moment of the storage process at any point of the bulk more accurately, thus allowing timely measures to be taken by the means of automation.
Applying the Data Envelopment Analysis method for evaluating the efficiency of the complex system operations in fuel and energy companies
Authors: Pokushko M , Stupina A , Medina-Bulo I , Dresvianskii E , Mashinets E , Shmeleva Zh 
Published: May 2020

Abstract
This work proposes the Data Envelopment Analysis method (DEA) as a tool for evaluating the efficiency of the complex systems operations on the example of fuel and energy companies. It is also presented a comparative analysis of different methods for evaluating the efficiency of the complex systems operations. The output-oriented DEA model is used in the research. The task with one input and two outputs is solved. In order to test the method, a complex system was chosen – the heat supply system for the heat and power plants on the left bank of Krasnoyarsk. The calculations were made using four heat and power plants in Krasnoyarsk.
Algorithmic methods of increasing the accuracy of analog blocks of measuring systems
Authors: Jumaev O A , Ismoilov M T , Mahmudov G B , Shermurodova M F 
Published: May 2020

Abstract
The main requirements for an intelligent measuring channel are considered in the article when designing automated control and control systems. The methods for estimating errors are classified and the constituent groups are classified, and some methods for calculating the errors of measuring means and measuring modules of automatic control systems are given.
SCADA system for laboratory research automation in determining the water proportion in oil
Authors: Serzhantova M P , Tynchenko V S , Bukhtoyarov V V , Bashmur K A , Kukartsev V V , Tynchenko V V , Petrenko V E 
Published: May 2020

Abstract
Automation of the petrochemical industry has not lost its relevance for a long time, despite the numerous solutions found in this area. The issues of increasing the accuracy indicator, reducing costs, increasing profitability and, importantly, ensuring the safety of petrochemical production are still awaiting a technological solution. The article touches upon the aspects of the harmful environment of the working area, the explosion and fire hazard of substances, the complexity of the chemical processes and their sensitivity to deviation from predetermined modes. The article proposes to solve a number of these problems by creating an automated workplace for a laboratory assistant. The article presents monitoring of laboratory process control.
Research of efficiency of regular separation pack made of corrugated metal sheets
Authors: Afanasenko V G , Kulakov P A , Rubtsov A V , Ivanov O S , Rakhmaeva G I 
Published: May 2020

Abstract
The separation of heterogeneous systems, of which gas is the solid medium, is a common process of the chemical and oil and gas industries. The quality of gas flow separation affects the efficiency of the entire process. This paper provides a research of the effect of the geometrical dimensions of a regular separation pack composed of corrugated sheets on the efficiency of fine particle capture. Information-measuring system based on simulation using computer simulation using finite element method is proposed for evaluation.
Mathematical functional for thermal distribution calculating during the electron-beam welding process
Authors: Kurashkin S O , Seregin Yu N , Tynchenko V S , Petrenko V E , Murygin A V 
Published: May 2020

Abstract
In this paper, we researched the influence of the electron beam defocus on the quality of the weld. The carried-out research was based on the theory of the thermal field using mathematical models developed by the authors. As a criterion of optimality, the previously developed thermal functional was used. We obtained criteria that can be used to simulate processes in electron beam welding, and to obtain more accurate modes, which is necessary to bind to power equipment. The obtained results of the criteria can be used for electron beam welding of various materials and different thicknesses.
The development of digital device for current, voltage, power measuring and simulation results in proteus environment
Authors: Klimenko Xenia A 
Published: May 2020

Abstract
At the present stage of development of the electric power industry, an important aspect is not only the reliable measurement of the values of alternating current and voltage, but also the convenience of representing the measured values. For this purpose, digital microprocessor devices are used, which allow not only to present the measured values in a convenient form, but also provide the ability to memorize and store series of measurements. This article presents the development of a digital device for measuring alternating current, voltage and power in single-phase AC circuits. In addition, the article presents the result of simulation of this device operation in the PROTEUS environment.
Promising methods for strengthening piston aluminum alloys of heat engines
Authors: Skryabin M L , Grebnev A V 
Published: May 2020

Abstract
Due to the increase in the specific power of heat engines, one of the most pressing problems of modern engineering is the increase in the contact strength and heat resistance of piston aluminum alloys. The article considers the main promising methods of strengthening piston aluminum alloys in the aspect of modern technologies. Long-term operation of heat engines in operating conditions close to critical conditions contributes to melting of the grain boundaries of piston alloys, which negatively affects the reliability of internal combustion engines. In General, the task of increasing the heat resistance of piston aluminum alloys is one of the main tasks of modern engineering.
Quality assessment of the fuel preparation production process at thermal power plants
Authors: Tynchenko Ya A , Kovalev I V 
Published: May 2020

Abstract
The production of electrical energy from most of the thermal power plants currently in operation is achieved by converting the thermal energy generated by the combustion of hydrocarbons. At the same time, one of the central technological processes is the fuel preparation. The article considers the task of measuring the parameters of a drying unit used in dust preparation systems. A block diagram of a monitoring system with a multi-point principle for measuring process parameters is proposed. Such a plan for the placement of sensors makes it possible to implement a multi-version approach to the formation of measured parameters of the technological process, for which a generalized quality criterion is proposed.
Block diagrams of a doubly fed inductor motor as a control object
Authors: Bronov Sergej , Avlasko Pavel , Nikulin Nikolaj , Bisov Aleksej , Krivova Darya , Stepanova Elena 
Published: May 2020

Abstract
To design the electric drives with the doubly fed inductor motor it is required to have the mathematical models of these motors. For this, one should have the mathematical models in the transfer functions form. The basic motor model is non-linear therefore, it should be linearized using the Taylor series. A block diagram is created according to the obtained system of linearized equations. Then the sequential transformation of this block diagram is performed with a gradual decrease in the number of contours. The block diagrams can be used to obtain the motor transfer functions with the arbitrary combination of input quantities (the amplitude, voltages, the frequencies of two voltages) and output quantities (the speed and the rotation angle).
Personnel support for innovative economic development in the new normality
Authors: Yu Peshkova G , Kiselev S V , Zimina I V 
Published: May 2020

Abstract
The concept of “new normality” is becoming popular among representatives of various scientific fields, and, above all, in the economy. It is rather controversial, however, the signs of stagnation observed in the Russian Federation, and corresponding to the signs in the framework of the concept of “new normality” clearly indicate the need for new solutions in the search for a way out to a new round of economic growth. Digital economy and innovation are the direction that can become a new driver on the way to growth and development. However, there are some factors that significantly affect the success of the implementation of state programs for the development of the digital economy in the Russian Federation. One of the significant factors is the training of qualified personnel who are able to solve problems in the mode here and now, capable of innovative activity, the creation of innovative products. This article examines the experience of the state university, the State University of Aerospace Instrumentation, on the introduction of the work-integrated education system in order to train innovative personnel for the economy of St. Petersburg and the Leningrad Region.