bluuebunny/crossref_metadata_2025_split huggingface dataset:
Cyber-physical production information environment
Authors: Shukalov A V , Zharinov I O , Zharinov O O 
Published: May 2021

Abstract
Information environments that ensure the automation of industrial processes are used for the management of production structures by the control methods of technological indicators. For intelligent operations management, a variety of communication channels are used to bring together sensor networks and integrated (optimized) workflows of data and products. Regulation of the production process involves hierarchical management mechanisms that provide information environment tools to monitor compliance with the specified technological parameters of equipment and achieve a stable balance in the interaction of software and hardware systems. The influence of the hierarchy of control systems on production processes is realized in the regulators localized in cyber-physical systems, and in the central regulator, which corrects the corrections of control actions. Multistage control is a function of an information environment that regulates technological processes. Due to the discreteness of the control processes of the central regulator, the equipment subordinate to the vertical hierarchy system is corrected by messages transmitted in the format of a time sequence in the communication channels. Feedback as a subject of the information management process solves a particular production problem, corresponding to maintaining the quality of manufactured products in the dynamics of registration of disturbing influences by measuring means of the sensor network. The structure of the information environment is proposed, considered on the example of management processes for one piece of equipment in cyber-physical production.
Special software application for antenna modelling in mechanical engineering
Authors: Amosov A G 
Published: May 2021

Abstract
The article is devoted to one of the best today computer program for antenna modelling. No special computer simulation skills are required to use this software. In this study, based on foreign and domestic sources, the influence of the MMANA-GAL program on the design of various types of civil antennas is considered. The paper specifically describes this simulation program. The description includes its history of creation, application, comparison with previous programs and algorithms, the interface of the MMANA-GAL itself is also described. It tells about how useful this program is, how it simplifies life and saves time for developers and designers, since the built-in library contains examples of more than two hundred antennas. Standing out advantages are: its free-of-charge basis, and from the operational characteristics - display of 2D and 3D antenna radiation patterns and its frequency response.
Comparative analysis of requirements for industrial cleanliness in mechanical engineering
Authors: Amosov Alexey G 
Published: May 2021

Abstract
In this work, the author shows the results of the study of the nomenclature base for industrial cleanliness in domestic sources and compares them with foreign analogues used in related fields of activity. With a detailed analysis of the standards, one can conclude that they are similar. The study presents universal methods for achieving a given surface cleanliness of technological equipment, which allow obtaining a result that meets the requirements of both domestic and international standards.
On the issues of modeling the roll contact curves
Authors: Khurramov Sh R 
Published: May 2021

Abstract
The paper is devoted to the mathematical modeling of the roll contact curves in two-roll modules. A generalized two-roll module is considered, in which the rolls are located relative to the vertical line with a tilt to the right, have different diameters and elastic coatings of different stiffness, the material layer is fed downward. The results of the analysis of strain properties effect of the rolls elastic coatings and the processed material on the shapes of the roll contact curves are given. The models of roll contact curves in a generalized two-roll module are found for the cases where the strain of contacting bodies is given by empirical formulas and by rheological models.
Parabola approximation by a hyperbola when modeling steering mechanism characteristics of tracked vehicles
Authors: Yu Dobretsov R , Dobretsova S B , Voinash S A , Taradin G S , Ladikov I S , Alekseeva S V , Taraban M V , Iliushenko D A 
Published: May 2021

Abstract
Steering control quality improvement and movement safety ensuring of tracked vehicles, primarily high-speed ones, is an urgent problem. Characteristic feature of most tracked and transport vehicles transmissions is an almost linear relationship between values of calculated (maximum) turning radii in gears and movement speed, which leads to underutilization of traction and dynamic capabilities of machines. It would be more advantageous to provide a parabolic view for such a dependence, or at least its non-linear character. Two-stream transmission and rotation mechanisms proposed today with a nonlinear characteristic make it possible to realize only a hyperbolic dependence between these quantities, which makes it urgent to search for constructing methods of the best parabola approximation by a hyperbola. Article shows constructing principle of a hyperbolic swing mechanism diagram for transmission with central gearbox and parallel branch drive through three-link differential mechanism, provides an example scheme for it and proposes a technique for constructing best uniform parabola approximation by a hyperbola on a given interval, based on classical problem of uniform approximation of a function by a polynomial. Construction results can be used to determine main parameters of two-line hyperbolic swing mechanisms for transport tracked vehicles with central gearboxes.
Theoretical foundations for modeling the occurrence of attached, vortex and vibration cavitation during heat treatment of machine parts in a cavitating coolant
Authors: Asaev A S , Ivanayskiy A V , Atamanov S A , Posalina A E , Sadkin O V 
Published: May 2021

Abstract
The effect of cavitation can increase the efficiency of the stability of the cooling process of machine parts during their heat treatment. The article defines the geometric parameters of the installation for carrying out the process of heat treatment of machine parts, as well as the external influence necessary for the appearance of the effect of vortex cavitation in the full volume of the liquid technological medium.
Investigation of the process of removing the thread from the surface of the cocoon in an aquatic environment
Authors: Sobirov Q E , Mardonov B M , Akhmedov J A , Ermatov Sh Q , Umurzakova Kh Kh 
Published: May 2021

Abstract
The law of motion of a cocoon, the method of hydrodynamics are studied, and the motion of a cocoon with variable mass in the form of a ball immersed in an aqueous medium is considered. The graphs of the dependence of the displacement of the center of the cocoon (ball) on times for two values of the coefficient of stiffness of the thread ?0 (?/?) and the time of completion of the cycle ? (sec) are presented. The theoretical equation and calculations for the location of the ball in the aquatic environment are presented. The paper studies the effect of thread breakage during cocoon unwinding on the quality of raw silk.
Research of the process of pressing black cotton oil from oil fooses
Authors: Savriev Yuldosh , Gafurov Karim , Sevinov Ulugbek 
Published: May 2021

Abstract
In the process of production of vegetable oils, insoluble impurities are removed from the black oil after pressing using sludge traps and filters. Oil sludge separated from the forepress oil has an oil content of up to 50%. For the complete extraction of this oil from the sludge from the sludge separator and filter presses, it is recycled into the upper vats of the roaster of the press units and further for pressing. At the same time, the returnable sludge affects one of the main characteristic of the obtained cottonseed oil – the acid number. Our research has shown that with such a scheme of sludge processing, the sludge acid number obtained after prepressing is 5 mg KOH. This leads to a significant loss of oil to soap stock during oil refining. The solution to this problem is to prevent the sludge separated on the separator from falling back into the frypot, instead the sludge is pressed to produce black cottonseed oil. The degree of influence on the pressing process of influencing factors – the percentage of sludge in the mixture and the duration of mixing the sludge and husk of the mixture - is experimentally studied in this research work. The rational values of these factors are determined. The planning of a two-factor experiment was carried out in order to reveal the effect of the interaction of these factors. The obtained regression equation allows determining with sufficient accuracy the residual oil content of the cake in the investigated range of changes in the influencing factors, which is necessary to optimize the process.
Analysis of the movement of raw cotton in the working chamber of the screw cleaner
Authors: Rajabov O I , Uzakova L P , Gapparova M H 
Published: May 2021

Abstract
The article presents the results of theoretical studies on the substantiation of the parameters of the main working organs of the raw cotton cleaner from fine trash. The article also provides a scheme of interaction between the pile and the raw cotton. The speed and direction of movement of the cotton after the impact are given. This article analyzes the interaction of the laws of cotton volatility with the mesh surface of a cotton cleaner from fine trash. Based on the research, the best values of the frequency of rotation of the spiked cylinder, the number of edges of the spiked and the gap between the spiked cylinder and the net were obtained.
On problem of determining the stress state of elasto-plastic compressible area weakened by ellipsoidal cavity
Authors: Maksimov A N , Derevyannykh E A , Mitrofanova T V , Belova N N , Konstantinov Y V 
Published: May 2021

Abstract
The work is one of the stages of solving the problem of determining the stress state for a compressible mass weakened by cavities. In the problem statement, there is no pressure inside the cavity, and mutually perpendicular forces are applied at infinity. The problem is solved by the small parameter method, in a spherical coordinate system, in dimensionless length units. The previously found values are taken as the known stress components in the zero approximation in the elastic area and as the perturbed stress components in the plastic area. Using the conjugation of stresses at the boundary of elasto-plastic zone, the stress components for the elastic area are determined in the first approximation. The obtained results can be used in the field of mining, construction mechanics and other related fields.
Optimization of the petrochemical enterprise control system focused on resource conservation
Authors: Barsegyan N V , Vodolazhskaya E L , Chekanova E V 
Published: May 2021

Abstract
The article assesses the efficiency of designing lean organizational management structures at petrochemical enterprises, taking into account the optimal number of employees at high-performance workplaces. The purpose of the article is to identify the main factors that affect the effectiveness of the design of the control system. The analysis of factors influencing the design of a lean organizational structures, the results of which the most significant factor to consider in the design and implementation of lean management is the factor that we named as “personnel innovative potential.” This means that, despite the capital intensity of petrochemical production, the impact of the use of human resources becomes more important in digitalization. On the basis of this study it is shown that taking into account the achievements of totals for the petrochemical industry cumulatively efficiency of innovation activity, expressed in the calculation of the shipment of innovative products in 1 high-performance workplace will increase from 0.7 million rubles on average, a petrochemical facility to 1.6 million rubles by 2024.
The use of ANSYS for modelling the energy distribution in steady mode with electron beam welding
Authors: Murygin A V , Kurashkin S O , Tynchenko V S , Rogova D V 
Published: May 2021

Abstract
The article is devoted to solving the problem of modelling the distribution of energy in the steady mode with electron beam welding with the means of ANSYS Academic Student. The authors propose the implementation of the simulation model to allow evaluating the density of the heat field in the assembly unit of the product when it is connected to its elements by means of electron beam welding. Two imitation models are implemented for one of the types of aerospace products, made of titanium alloy and aluminum alloy. Such models allow research to assess the effect of technological parameters of the process of electron beam welding on the heating intensity of the zone near the weld. A series of experiments with visualization of their results for various power values was carried out.
Parametric restrictions on industrial cleanliness of technological equipment in mechanical engineering
Authors: Mikhailova E V 
Published: May 2021

Abstract
In the presented work, the author has carried out a parametric analysis of technical requirements and restrictions on the use of technological equipment in heavy engineering in clean rooms. The analysis shows the presence of design requirements, manufacturing and assembly requirements, as well as requirements for the maintenance and repair of technological equipment during operation and further, throughout the entire life cycle. A feature of the work is the consideration of previously developed technological equipment and its application in the conditions of modern requirements of clean rooms. Due to the absence of strict requirements in the manufacture of technological equipment, the result of the work performed is the classification of contaminants identified by the author and possible practical recommendations for compliance with the requirements and restrictions of clean rooms of the equipment in operation.
The study of the toxicity of exhaust gases of a diesel engine when operating on methanol and methyl ester of rapeseed oil
Authors: Anfilatova N S , Likhanov V A , Lopatin O P , Yurlov A S 
Published: May 2021

AbstractWhile legal restrictions on the use of fossil fuels are applied to conserve natural resources, mixed alcohol fuels, vegetable oils and their esters are increasingly attracting attention as promising alternative sustainable energy sources for cars. The paper substantiates the need for the use of biofuels (BF) in diesel engines (DE) and studies such eco-friendly energy sources as methanol (M) and rapeseed oil methyl ether (ROME). M and ROME potentially lead to some solutions to environmental problems, because for their production, there are quite abundant resources and these energy sources are characterized by relatively low emissions of harmful substances during combustion. The paper presents the results of experimental studies of the toxicity of DE powered by M and ROME, and shows an improvement in its environmental performance.
Stress-deformed state of the coil of the pyrolysis furnace at deviation of the shape of pipes
Authors: Kovshova Yu S , Rubtsov A V , Farshatov A R 
Published: May 2021

Abstract
A distinctive feature of the pyrolysis furnaces of hydrocarbon raw materials from other types of furnaces operated at the facilities of oil and gas chemical enterprises is the strict operating conditions necessary for the implementation of this process. At the same time, the temperature of the radiant coil in operating conditions can reach 1050 ° C. In this regard, the probability of failure of coils of pyrolysis furnaces due to defects and damages during operation is extremely high. In addition, variations in coil shape and dimensions that occur during manufacturing or operation can negatively affect the overall stress-strain state of the coil during operational loads. In this work, the influence of permissible deviations in the shape and dimensions of pipes used in the welding of the coil on its stress-strain state in working conditions is investigated.
Identification of zone of increased stresses of the apparatus with a shirt under conditions of corrosion wear by modeling
Authors: Rubtsov A V , Arkhipova K S , Rubtsov A V , Kulakov P A , Afanasenko V G , Zubkova O E , Mukhametzyanov Z R 
Published: May 2021

Abstract
Apparatuses with a shirt have two working cavities with independent pressures and temperatures, as well as independent working environments. When operating two cavities, a certain difference in pressure and temperature is simultaneously created, leading to the appearance of unfavorable zones, which can negatively affect the life of the apparatus. For the timely identification of the most unfavorable zones, a wide range of non-destructive testing methods are used, which make it possible to assess the actual technical condition and level of metal defectiveness. However, due to the design features of the apparatus with the shirt, it is quite difficult to conduct a full visual control of the inner surface. Therefore, the actual work is to assess the stress-deformed state of equipment with an original design using modeling in modern software systems in order to identify potentially dangerous sections in terms of maximum operating stresses.
Mathematical model of a single-acting pneumatic cylinder actuator
Authors: Nikitin A A , Sorokin E A , Nikitina T N , Sokolov D A , Andreychikov I V 
Published: May 2021

Abstract
Pneumatic actuators are widely used in industry as the most reliable automation tools. The efficiency of automated systems depends on the speed of pneumatic actuators. Therefore, the development of methods studying the dynamic processes of pneumatic actuators is an urgent task. this paper concerns a mathematical model of a single-acting pneumatic cylinder actuator, which is convenient for computer calculations using universal mathematical packages. As an example of the application of a mathematical model, paper shows the influence of the piston diameter on transient processes in a pneumatic actuator.
Application of optical narrow-band mirrors in sensor of concentration of dust in coal mines
Authors: Novikova Yu A , Ryzhikov M B 
Published: May 2021

Abstract
The article presents a new design of the sensor for measuring dust, which is based on the effect of absorption of optical radiation passing through the dust layer. Fundamentally new is the use of a powerful low-cost LED, the spectral part of the radiation range required for measurement of which is formed by the structure of auxiliary reflective optical interference filters. A technique based on the introduced stability criterion of the synthesized interference coating is developed, which makes it possible to study the transformation of the spectra with real errors in the film thicknesses.
Multi-attribute decomposition technique for fault tolerant multiversion systems
Authors: Kovalev I V , Testoyedov N A , Kovalev D I , Losev V V , Saramud M V , Golovenkin E N , Maksimov I A 
Published: May 2021

Abstract
The article proposes an original method for decomposition of fault-tolerant multiversion systems based on multi-attribute analysis. Decomposition into functional subsystems is carried out taking into account the generality of functions performed by software modules. In this work, the attribute of the importance of functions is determined based on the general function of the unmanned aerial vehicle and the set of tasks that it must perform. The division of software modules into types allows you to determine possible ways to improve reliability that are applicable to them. These are, for example, multi-version programming, recovery blocks, t/(n-1)-variant programming.
Methodology for introducing digital technologies into the process of monitoring quality indicators of the technological cycle of electronics manufacturing
Authors: Petrushevskaya A A , Aleshkin N A 
Published: May 2021

Abstract
Nowadays, industrial enterprises are paying more and more attention to innovations that increase the income of organizations, accelerate growth, which is the basis for creating competitive advantages. Today, one of the most common ways to ensure the effectiveness of production and management of organizations is the implementation of digital technologies. Production and economic processes are actively analyzed in order to identify “weak” points that can be eliminated with the help of intelligent software and hardware systems. In view of the increasing requirements for the quality of manufactured products, as well as for the competitiveness of the organization as a whole, issues related to the development of methods and means of effective management of the process of monitoring the quality indicators of the technological cycle in the production of radio electronic products are of particular importance.
Ultrasonic testing of the strength and homogeneity of concrete structures of the turbine compartment of a hydroelectric power plant
Authors: Zveinieks Valdis , Shahmenko Gennadiy , Švejcs Aivars , Korjakins Aleksandrs 
Published: May 2021

Abstract
At one of the Latvian hydroelectric power plants, according to the project, it was planned to replace the turbines and at the same time renovate the concrete of the turbine compartment structures. To this end, the old, damaged concrete was removed (to a depth of 60 cm), new reinforcement was laid and concreted with new concrete. This object is important for the national economy, so it was necessary to ensure quality control of construction work and materials used. To control the strength of concrete, usually at the same time as concreting the structure, cube specimens are made from the same concrete mixture. This method cannot fully guarantee an objective control, since the manufacturing technology and hardening conditions of the control samples differ from real conditions. To obtain more objective results, it would be necessary to drill core samples from the hardened concrete for their subsequent testing. Drilling out a large number of samples is laborious and undesirable, since reinforcing bars can be damaged due to the dense reinforcement of the structure. Investigation the concrete mechanical properties have been performed non-destruction method applying ultrasound equipment.
Analysis of modern computer diagnostic and measurement methods in medicine
Authors: Nikolenko D A , Munister V D , Zolkin A L , Khvatov I L , Karapetyan A A 
Published: May 2021

Abstract
The article deals with the aspectology of determining the classification of problems in the metrological apparatus of medical support. Attention is paid to the design and synthesis of the principles of diagnostics and direct measurements in medicine. The functional and semantic component of modern computer diagnostic methods is indicated, their synergistic effect is determined. The importance of promising measurement control methods - expert systems of new generations is substantiated. The author’s consideration of the issue of solving specific problems through the methods of artificial intelligence and information technologies in mass spectroscopy is given.