bluuebunny/crossref_metadata_2025 huggingface dataset:
Digital transformation of machine-building complex enterprises
Authors: Novikov S V , Sazonov A A
Published: May 2020

The article is devoted to the analysis of the digital transformation of machine-building complex enterprises. In the theoretical part it is determined that the development is possible due to the effective and qualitative renewal of existing production and business processes on the basis of comprehensive introduction of advanced innovations. There are key business objectives of the technological concept «Industry 4.0» in the article. There are also factors influencing the indicators of competitiveness of Russia in the implementation of the concept of technological breakthrough. In the research part of the article the influence of digitalization processes on the competitiveness of products in the digital production is determined. The «roadmap» is made in accordance with the provisions of the program «Digital economy of the Russian Federation» and «Digital engineering». As a result of the analysis, it was determined that in the developed program, the main importance, of course, is the development of special standards necessary for the qualitative development of the digital architecture of the enterprise. In conclusion, the authors shown that it is necessary to have certain competencies of employees working at the enterprise, as well as the management should understand the growing need to create new jobs for highly qualified specialists processing and analyzing production information within the production enterprise for a competent digital transformation.
Mathematical modeling of the fire within the premise equipped by the system of antismoke ventilation
Authors: Kalach A V , Parshina A P , Oblienko A V , Sushko E A , Kalach E V
Published: May 2020

Results of mathematical modeling for the fire parameters within a premise are presented with the account of characteristics of the antismoke ventilations system. The effect of the fire loading kind in the premise on the value of the average-volume temperature of the gaseous medium was studied in case of the work of antismoke ventilation. Mathematical model allowing to evaluate dynamics of the fire temperature in the premise equipped with a system of antismoke ventilation was developed. This modeling was shown to considerably simplify the problem of determination for the parameters of emergency ventilation system already at the design stage. It also enables to estimate the efficiency of ventilation systems in the buildings in the fire conditions.
Mathematical simulation of the number of fires in Russian Federation on the kind of object
Authors: Kaibitchev I A , Tararykin A M , Kalach A V , Yu Porkhachev M
Published: May 2020

An attempt was undertaken to find the kind of the functional dependence between the number of fires in the Russian Federation and the kind of an object. Model of Verhulst was employed in the process of regression analysis previously used in biology for description of the process of the animals’ population growth. Modification of Verhulst model assuming variable rate of growth was found to allow approximation of the studied dependence with 100% accuracy.
Quality assessment of temperature measurements in incoming inspection of raw meat
Authors: Leonov O A , Zh Shkaruba N , Cherkasova E I , Odintsova A A
Published: May 2020

A system based on the HACCP principles represents an effective tool for poultry processing. This system provides risk identification and corrective actions for it reducing. A low level of metrological assurance of CCP effects on risk identity because it depends on accuracy of measurement information. MSA method for measurement assessment of CCP in poultry production is recommended. The metrological analysis of CCP for technology process is developed. The researches of temperature of cooled poultry meat is traced in real-time production. At the first step with the use of control diagrams the stable measurement process was established. Second step showed the absolute and relative meanings for deviation in measurement process. At the third stage the assessment of measurement deviation was leaded. At the final stage over result grading the top ways of reducing measurement deviation were estimated. The analysis showed that measurement process should be improved. Changes the properties of meat samples is the major du ring temperature measurement. The second place is for measurement repeatability. The measurement method is important, that’s why for reducing the measurement deviation it is recommended to change the method or choose another measuring instrument. The role of mechanic was not recognized. Proposed assessment approach for measurement process of CCP based on HACCP principles in order to identify risks within the food safety control and to minimize technique regulation procedure.
Rating of corrosion factors determining its speed for stationary offshore platforms for oil, gas, coal and other minerals
Authors: Starokon I V
Published: May 2020

Corrosion processes of offshore fixed platforms (OFP) of shelf deposits of the Black Sea are explored in this article. Factors which are affecting the intensity of corrosion processes in an offshore field analyzed in the article. Analyses which were conducted allow to structure these factors and calculate the weight coefficient of influence of each of them. The author calculated the corrosion rates for the elements of the support block depending on their location in different zones (underwater, periodic wetting or above-water) based on the data presented in the reports on technical diagnostics of offshore platforms of the Black Sea region.
The tensile strength diagnostics of transparent monolithic polycarbonate by piezoelectric effect
Authors: Bobina E A , Gimadeeva L A , Danilaev M P , Klabukov M A
Published: May 2020

The experimental results of relationship between tensile strength and piezoelectric voltage in transparent monolithic polycarbonate are presented in that paper. The most useful location of electrodes on the surface of monolithic polycarbonate samples for measurement the piezoelectric voltage was determined. It was showing that the first derivative of piezoelectric voltage by time passes through the zero when the cracks in polycarbonate start arising. Moreover, the local maximums of the piezoelectric voltage and a tensile strength come a little bit earlier than the cracks in polycarbonate start arising. That allows using piezoelectric effect to diagnostics the maximum allowable strength in transparent monolithic polycarbonate.
Classification of motor oils by parameters of thermo-oxidative stability
Authors: Kovalsky B I , Petrov O N , Afanasov V I , Vereshchagin V I , Sokolnikov A N
Published: May 2020

The results of research of thermal-oxidative stability of motor oils of different underlying fundamentals. Proposed indicators for classification of engine oils, including a potential resource, the temperature of the beginning of the transformation process and the critical temperature. Based on the studies, it is shown that the application of the proposed method for the classification of motor oils allows you to get additional information about their quality, including indicators such as: potential resource, the temperature at which transformations in oil begin and the critical working temperature.
Emissions from stationary pollution sources in the Republic of Crimea in 2013-2018
Authors: Tabunshchyk V A , Kalinchyk I V , Zhuk V O
Published: May 2020

This article is concerned with the visualization of the monitoring data of the emissions into the atmosphere from stationary pollution sources on the territory of the Republic of Crimea in 2013-2018 with the help of geographic information systems. A brief overview of the use of geographical information systems for various types of environmental monitoring is provided. The structure of geographical information systems is analyzed in detail. In the paper, map building is performed by means of the ArcGIS software package. In the period from 2013 to 2018, the emission volume from stationary sources within the Republic of Crimea changes every year. The largest contribution to atmospheric emissions from stationary sources is made by industrial enterprises in the cities of Krasnoperekopsk and Armyansk.
On the requirements for operational planning systems for industrial production
Authors: Vysochin S V , Boyar-Sozonovitch A S
Published: May 2020

The article analyzes and systematizes the requirements of potential and real users to computer systems for operational planning and production management. There is a particular attention to production systems of the “Advanced Planning and Scheduling” (APS) class, which have a high degree of integration with the systems of the “Manufacturing Executable Systems” (MES) class. There is also a brief overview of the reasons for the creation of APS systems, as well as their general ideology and conceptual problems in the development. A number of key requirements for APS systems are considered, as far as possible, in the order in which they arise both during the development and the operation of these systems. The article was based on the long-term interaction of its authors with representatives of manufacturing enterprises of various sizes, belonging to different industries located in Russia and the countries of the Commonwealth of Independent States. This interaction was carried out as a part of the implementation of the “Zenith SPPS” information system in the pilot and industrial operation.
Improving manageability by sustainable development of territories based onexpanding the possibilities of its measurement
Authors: Ya Belobragin V , Ivanova G N , Chudinovskikh I V
Published: May 2020

The article deals with some aspects of sustainable development connected with improving its management. The author’sinterpretation of this concept is given, the necessity of managing such development is substantiated, and the main tasks of management are formulated. Particular attention is paid to the consideration of various nomenclatures of indicators of sustainable development, including those established by international standard and tothe identification of their advantages and weaknesses.
Mathematical and hardware modelling of MST radar signals
Authors: Dmitriev D D , Ratuschnyak V N , Gladyshev A B , Golubyatnikov M A , Buravleva M E
Published: May 2020

The study examines the features of formation of radar signals, their structure, and software and hardware complex of MST radar. The results of formation of radar pulses with different types of phase and amplitude-phase modulation, as well as the results of generation of these pulses and their spectral analysis are presented. These results are obtained by using hardware based on PXI modules produced by National Instruments and Keysight and a software model created in the LabVIEW development environment.
Assessment method for fresh concrete spreadability
Authors: Emelyanov R T , Turysheva E S , Yakshina A A , Makeich V V , Berseneva M L
Published: May 2020

The results of studies of the fresh concrete spreadability using 3D printing of construction products are presented. The 3D printer is an automated device for the construction of buildings and erectioins, the manufacture of specific structures and products by the method of three-dimensional printing of fine-grained fiber-reinforced concrete with special additives, sand concrete, geopolymer concrete, etc. Assessment methods for the concrete consistency occurring during installation are considered. The applied methods for assessing the spreadability of fresh concrete take into account only its own mass of concrete and do not reflect dynamic processes. The use of the ultrasonic method allows mass testing of products of any shape repeatedly, to continuously monitor the growth or decrease in strength. The disadvantage of this method is the error in the transition from acoustic characteristics to strength. The spreadability of the concrete mixture is estimated depending on the amplitude-frequency characteristics. The dependences of the amplitude of vibrations and accelerations of the paver hopper on the density of the concrete mixture are given. Particular optimization of vibration accelerations by the amplitude of the oscillations of the hopper walls, the amplitude of the oscillations of the charge layers and the stiffness of the vibration dampers is performed.
Business process transformation: impact mobile technology and social networks on the business dynamics of the company
Authors: Okrepilov Vladimir V , Kovalenko Boris B , Getmanova Galina V , Turovskaj Maria S
Published: May 2020

The article presents the results of a study of the impact of mobile technology and social networks motivating management to transform business processes to ensure positive business dynamics of the company. Based on the analysis of indicators of the use of mobile technologies and social networks in business, it was revealed that these factors have an effective impact on the business dynamics of the company and become catalysts for the transformation of business processes. It is noted that mobile technologies contribute to a change in the traditional channels of interaction between business organizations and counterparties, a change in the role of consumers in the business process, the establishment and development of the phenomenon of consumer market power through social networks. The authors’ attention is focused on the problem of maintaining the mobile state of the business, which is able to meet the growing demands of consumers in a changing environment. To solve this problem, the authors see the relevance in the development of a culture of organizational change. Increasing the degree of business mobility, which is able to respond in a timely manner to changing consumer requirements, creates a motive for constant changes in business processes. This means that it is necessary to create norms, rules, regulations and standards of changes. The authors propose a phased scheme for transforming a business process.
Features of the QFD method in the development of software and hardware complexes for controlling groupings of unmanned aerial vehicles
Authors: Semenova E G , Antokhina Yu A , Balashov V M , Smirnova M S
Published: May 2020

In the practical implementation of projects for the development of software and hardware complexes for managing unmanned aerial vehicle groupings within the SCRUM technological system, not only issues of a systematic and logical determination of the architectural and technological aspects of the quality of the hardware platform and software being developed are important, but also the effective development of specific recommendations on quality improvement measures in the current process conditions. The method of developing recommendations on ensuring the quality of the isolated components of the software and hardware complexes for controlling the groupings of unmanned aerial vehicles, which in essence is the correct localization of the method of structuring the quality functions (Quality Function Deployment: QFD method) to the subject area of development and creation, is aimed precisely at ensuring the indicated efficiency hardware-software complexes, software within the framework of the SCRUM technological system.
Development of an identifier analysis algorithms to account for the movement of material flow in space transport systems
Authors: Taratun V E , Fetisov V A
Published: May 2020

In modern space transport systems, the extremely urgent task of a unified identification and labeling of goods for various segments. One of the main tasks to be solved in the process of organizing the movement of cargo for delivery to the International Space Station is the organization of operational management. The article discusses international standards for identification and hardware implemented on the basis of radio frequency identification technology. The cargo movement system should have modules for cargo traffic planning, which is currently not the case. In addition, an important task in organizing the operational accounting of the material flow of goods is the realization of the possibility of a single information exchange between the various segments of the space system, which in turn involves the use of standardized methods and means. The article discusses the technology of automatic identification in relation to the space industry, the basic standard documents and provides a new developed algorithm for the analysis of identification codes of cargo data for the space transport system.
Automated control systems for wastewater discharges in the pulp and paper industry
Authors: Epifanov A V , Tsoy E V , Smirnova V O , Smirnova A S
Published: May 2020

The algorithm and the experience of implementing automated systems for monitoring the quality of waste in the pulp and paper industry in the framework of a unified system of industrial environmental control are being considered. The required list of wastewater parameters subject to automated control is determined. The main technical and operational characteristics of automated wastewater quality control instruments included in the unified state register of measuring instruments are being considered. The problems of introduction of automated wastewater quality control systems in the Russian Federation are being considered.
Quality evaluation information system of street cleaning
Authors: Terekhova V S , Popov A A , Gritsenko E M , Satsuk M M , Artyshko A A
Published: May 2020

The problem of increasing the effectiveness of measures aimed at the effective implementation of public utilities in a modern urban environment is being addressed. The main task is to control the quality and efficiency of work performed. Timely street cleaning is hindered by many factors, including the lack of a unified automated information system for evaluating the work performed. This approach will allow you to combine high performance due to the speed of the system and effective quality control of street cleaning. The aim of this work is to study and analysis of existing information systems, allowing to automate the process of quality control and operational execution of the challenges described above. On the basis of the conducted research, develop an information system, agreeing with the customer (administration of the Central district of Krasnoyarsk) requirements and functionality. The principles of metrological support and operation of measuring equipment are the basis for creating and maintaining the state of automated information system measurements, in which their unity and uniformity is observed. This article presents the main aspects of the design and software solution. The software solution is implemented in the PhpStorm integrated development environment in the PHP programming language.
CFAR multi-target detection based on non-central Chi-square distribution for FMCW
Authors: Ivanov S I , Kuptsov V D , Fedotov A A , Badenko V L
Published: May 2020

The results of synthesis and analysis of the effectiveness of the optimal location-based system for joint detection and estimation of informative parameters of quasi-determined radar signals with frequency modulated continuous wave are presented. A method has been developed for calculating the noise immunity indices of frequency modulated continuous wave radars and the detection threshold of signals in the quadrature channels of the optimal radar receiver based on off-center χ‘2-distribution for given technical characteristics of the location system, including the mode of operation for detecting and evaluating parameters in multi-target mode.
Automation design systems for mechanical engineering and device node design
Authors: Morokina G S , Umbetov U , Mailybaev Y K
Published: May 2020

This paper is concerned to the analysis of the construction of the devices with software program for the engineering production. It is necessary to optimize the basic parameters of production for quality improvement. The important and modern trend is development of the program platform for useful and not very expensive software. The integrating program allows us to create new modules of the software for design devices. It was done the overview of the programs for analyzing the main elements of the individual parts of the construction devices for the modern control systems. It was shown that the idea of construction connected possible with integrated software system Trace mode. This product has module for design and investigation of apparatuses with new quality of elements. Concepts relating to design issues are interpreted by different approaches in international standards.
Application of the Taguchi method to optimize the strength level of dispersed-filled polymers with reduced combustibility
Authors: Efremov N Y
Published: May 2020

The article considers optimization of strength level of dispersed-filled polymer materials based on polyurethane BASF with addition of perlite powder and aluminum hydroxide of different dispersion degree. The Taguchi experiment was chosen as a method of investigation. The experiment plan includes 7 controlled factors and 2 interference factors. An optimal combination of factors is determined to provide a maximum signal-to-noise ratio and a minimum variation coefficient. Controlled factors are ranked by degree of influence on sensitivity of tensile strength to interference. The applicability of the Taguchi method to optimize the strength of dispersed-filled polymers has been confirmed.
Detection of defects on apples using hyperspectral reflection visualization combining both vegetation index analysis and neural network
Authors: Balabanov P V , Divin A G , Egorov A S , Zhirkova A A , Yudaev V A
Published: May 2020

The article shows the possibility of using vegetation indices to build algorithms for recognizing defects in plant tissue of apples. The authors demonstrate that it is advisable to use halogen lamps as light sources for apples hyperspectral control, but LED backlighting to correct the spectrum at the edges of the 400-1000 nm range is preferable to use. The experimentally obtained spectra of the optical radiation reflected from the apples plant tissue in the mentioned wavelength range are presented and show the possibility of identifying defects using vegetation indices. At the same time, the risk of obtaining false defects for some varieties of apples is revealed. To reduce this risk, it is proposed to use artificial Deep Feedforward neural networks with one hidden layer.
Diagnostics of the ecological state of aquatic and urban ecosystems using radiometric and bioindication analysis methods
Authors: Batrachenko E A , Goneev I A , Lukashova O P , Rudnev V V
Published: May 2020

Currently, all over the world, great attention is paid to the problem ofthe ecological state of urbanized territories. The issues of protection of the atmosphere, water sources, flora and fauna, soil cover are becoming increasingly acute. The issues of the methodology of environmental monitoring of ecosystem components transformed by anthropogenic activities deserve particular attention. Diagnostics of the ecological state made by physical and bioindication methods allows to obtain representative groups of indicators.
On the modeling of wild reindeer Rangifer tarandus sibiricus Murrey, 1886 migration processes using the example of the Taimyr-Evenki population
Authors: Soukhovolsky V G , Savchenko A P , Muravyov A N
Published: May 2020

The work focuses on the developing further methods for assessing the state of species during migration using satellite observation methods for monitoring the displacement of selected individuals in populations. The characteristics of the movement mode are used as an indicator of the state of a single species. The situation with deer can be considered by analogy with the assessment of the quality of the car and its movement mode. The speed of movement depends, on the one hand, on the design of the car, on the other hand, on the quality of the road surface, the availability and quality of fuel, the driver’s condition, etc. Similarly, the migration mode of a deer is determined by the physiological condition and physical capabilities of the individuals, landscape characteristics, feeding availability and quality. All these indicators are expressed through the deer displacement strategy: in the absence of resources on a certain area of the migration path in a satisfactory physiological condition, it is advisable for the individuals to increase the speed of movement in order to quickly get to the area with ample food. The characteristics of a possible stop-go strategy, determined by the alternating periods of fast running, resting and eating, can also depend on the state of a single species. It is also possible that there is a connection between the state of a single species, speed of movement and current weather conditions. The question arises whether it is possible to identify the type of migration strategy and the condition of individuals during their “marathon” run by time series of average daily speeds.
Comparative study of finite element analysis software packages
Authors: Magomedov I A , Sebaeva Z S
Published: May 2020

research of the work is dedicated on comparing the abilities of Finite Element Analysis of software packages Abaqus (Computer-aided engineering), Ansys (Mechanical), SOLIDWORKS and Inventor Nastran. The next software packages were selected as they are the popular products in the market today. In the Introduction the meaning of Finite Element Analysis tool is explained. Abaqus (Computer-aided engineering), Ansys (Mechanical), SOLIDWORKS, Inventor Nastran are described in the part of Literature review. From point of view their capabilities and specific features by compared to each other. Using the available data form the software packages the comparison took place. The outcome of the research illustrated that all four software packages capabilities are almost the same. However, the most diverse from the list was SOLIDWORKS. Abaqus (Computer-aided engineering), Ansys (Mechanical), Inventor Nastran has similar abilities. The difference was that Inventor Nastran is not capable of performing acoustic analysis. SOLIDWORKS differ from others in terms of it does not performs acoustic, Electric/magnetic Fluid flow and Fluid structure interaction. it also was point out that limited versions, that come free has some restriction when dealing with mesh. It was said that limitation constrains the quantity of nodes in the structure, which limits the analysis. By last the results, it was observed from the given data that SOLIDWORKS is aimed mainly on modeling a part or assembling the whole structure and doing available analysis in it. Hence SOLIDWORKS is marketed and aimed on modelling and assembly the other three software packages Abaqus (Computer-aided engineering), Ansys (Mechanical) and Inventor Nastran are analysis tools, which are utilized by the investigators and industry.
Informational and analytical system for monitoring migration of migratory birds in Northern Kazakhstan
Authors: Zuban I A , Kassimov I R , Zhadan K S
Published: May 2020

Nesting and stopping sites between nesting and wintering periods are of great importance for birds. The disappearance of these places as a result of human activity, the destruction of wetlands for use in agriculture does not allow birds to feed during the flight, which causes the death of birds during migration. The article is devoted to observations of migration of migratory birds of Northern Kazakhstan. The purpose of these observations is to track the population of birds, places of mass accumulation of migratory birds, wintering places. Modern satellite telemetry tools are used to monitor the route of movement and the time of stay of birds in certain local zones. Computer processing of data, stored on the server, allows to map the route, analyze, model and predict the behavior of birds during migration.
Development of a design of the mixer for an intensification of chemical and technological processes in the industry
Authors: Boev E V , Afanasenko V G , Boeva N I
Published: May 2020

From all variety of instrument registration of processes of hashing for an intensification of chemical and technological processes in the industry small-volume rotor mixers and dispersers with disk actions even more often find application. In this article the design of the small-volume mixer for receiving heterogeneous mixes is described. Constructive design of the device allows to carry out efficiently processing of homogeneous and heterogeneous mixtures.
Engineering process automation to determine the required material hardness of a cylindrical gear in Autodesk Inventor
Authors: Petrakova Ekaterina A , Brovkina Yuliya I
Published: May 2020

The article discusses the method of designing a cylindrical gear pair in Autodesk Inventor, which allows for its automated design and verification calculation within CAD software with the reconstruction of the geometry of the 3D model of the gear pair. The software product created by the authors makes it possible to obtain data on the required hardness of steel for the gear pair immediately after receiving the technical specifications for a wide range of operating torques, gear ratios and other parameters set in the technical specifications to select the best option from all possible. The paper presents the results of studies using the created software product: the values of the hardness of the material, the mass-dimensional parameters for the range of transmitted torques 250-710 Nm, gear ratios 2-5, and overall dimensions determined by the center distance of the gear transmission in the range 125-180 are obtained mm.
Development of environmentally friendly alcohol-fuel emulsions for diesel engines
Authors: Likhanov V A , Lopatin O P
Published: May 2020

In this work, the ecological mixture of alcohol with petroleum motor fuel was studied. Since one of the main qualities of an alcohol emulsion that determines its applicability in diesels is stability, the emulsion must have sufficient stability to operate the diesel for a long time. The results of microscopy of newly prepared samples of alcohol emulsions and samples with already started flocculation process are presented. The stability of alcohol emulsions with different amounts of alcohol and additives was studied. The optimal values of methyl and ethyl alcohol, water and additives in the emulsion intended for use in diesel engines were determined.
Innovative technologies and digitalization in radio electronics
Authors: Sopoeva I A , Kamberdieva S S , Kh Dedegkaev V , Gutieva A S
Published: May 2020

The purpose of this study is to consider the concept and value of the digital economy in the electronic industry. Attention was focused on digitalization of the full life cycle of radio-electronic products ensuring not only maximum efficiency and coherence of all business processes, close interaction of suppliers of equipment components, manufacturer and consumer, but also in the global sense contributes to increase of competitiveness of Russian radio-electronics. The development of the digital economy is necessary to strengthen economic relations between actors in order to simplify and accelerate the work of people, to conduct processes in a simple and transparent manner; In addition, digitalization will increase the need for skilled electronic equipment. The article reveals a certain aspect of innovation in the development of radio electronics and Internet technologies, which would make them competitive in modern economic conditions.
New urethane multiblock-copolymers obtained using naphthalene diisocyanate
Authors: Yu Senichev V , Makarova M A , Slobodinyuk A I , Pogoreltsev E V , Kulakova M V
Published: May 2020

Multiblock-copolymers were synthesized on the base oligoethers, oligoesters, naphthalene diisocyanate, and butanediol. The thermal, thermomechanical, and physico-mechanical properties of obtained copolymers with a variable composition of soft and hard segments were investigated. The relationship between the structure and properties of a new type of multiblock-copolymers was established. New materials can find application in various conditions of mechanical loading.
Improving the environmental performance of the diesel engine fueled by methanol and methyl ether of rapeseed oil
Authors: Likhanov V A , Kopchikov V N , Fominykh A V
Published: May 2020

Research aimed at reducing harmful emissions from diesel engines into the atmosphere throughout the world is of great current importance for its further introduction in transport industry. The article considers the issues related to the use of renewable alternative fuels – methanol and methyl ether of rapeseed oil, as well as the reduction in nitrogen oxide emissions by applying these fuels. The paper presents the comparative results of experimental findings (the data obtained as the result of bench testing) and theoretical ones. It has been noted that nitrogen oxide emissions (NOx) reduce by 47.4 %, when the engine is operated under nominal conditions, while at maximum torque they reduce by 33.5%.
Units for accelerated carbonation of concrete samples and repair compositions
Authors: Latypov V M , Fedorov P A , Lutsyk E V , Latypova T V
Published: May 2020

The article is devoted to the modernization issues of laboratory units designed for the concrete carbonation study. General pre-conditions for accelerated tests as well as developments of respective units are given. The article provides a rationale for the choice of carbon dioxide volume concentration and temperature and humidity conditions in a chamber. The article describes some variants of units with indication of their pros and cons and introduces a unit for carbonation of concrete with a humidifier and automatic control system.
Reduced emission of nitrogen oxides by the diesel engine running on methanol and methyl ether of rapeseed oil
Authors: Kopchikov V N , Fominykh A V
Published: May 2020

Recently the use of alternative fuels obtained from renewable resources has become a focus of great interest in motor transport industry. An important requirement which alternative fuels have to meet is reduced level of toxic emission into environment. The alternative fuels considered in the article that follows are methanol and methyl ether of rapeseed oil. The paper deals with specific features of nitrogen oxides formation by the diesel engine 2F 10.5/12.0 running on these fuels under various loads and speed rates. Theoretical and experimental studies have shown a considerable decrease in toxic emissions, nitrogen oxides in particular.
Metrological and methodological support for bench studies of diesel engines
Authors: Shekikhachev Y A , Balkarov R A , Chechenov M M , Kardanov H B , Shekikhacheva L Z
Published: May 2020

The presence of exhaust gas emissions into the environment during the operation of diesel engines is an urgent environmental problem both for the state of the atmospheric air and for agricultural crops, since the toxic substances contained in the exhaust gas are absorbed by plants and accumulated in crop production. Thus, the environmental characteristics of diesel engines are now becoming the most important indicators in their operation. The problem of improving the performance of diesel engines is solving at the present stage in the process of their production by improving and carefully working out the design schemes and technological processes associated with the manufacture of their most important parts, and in the process of operation – by improving the methods and tools used for maintenance and repair. This approach can be considered justified due to the influence of a significant number of factors (design and operational) on the performance of diesel engines. As is known, the quality characteristics of the mixture formation and the nature of the fuel combustion process depend on the fuel supply parameters. Analysing the state of the problem of improving the performance of diesel engines, we can draw the following conclusion: the main reason for the deviation of the working cycle of engines from the set values is the deviation of the fuel supply parameters from the optimal values.
Full factor plan application to polymer composites hardness investigation
Authors: Oreshina O A
Published: May 2020

Polymer composites have become widespread in many fields of technology. The article considers the creation of a mathematical model for predicting the hardness of dispersed-filled polymer composite materials based on silicone rubbers of synthetic heat resistant low molecular weight rubber A type with fine aluminium hydroxide powder addition. A full factor experiment was chosen as a test method. The main statistical criteria were checked, the reproducibility of the experiments and the adequacy of the obtained model were shown.
Impact assessment of cutting angle of blade on storage density value of ice cutting process
Authors: Ganzha V A , Lunev A S , Kaizer Yu F , Vereshchagin V I , Ganzha A V , Satyshev A S , Karelin E N , Chavyraa Ch D
Published: May 2020

This paper concerns main results of research on interacting process of blade and ice during mechanical corrosion. It describes experimental research conditions and their main results. The paper shows argument of reasonable geometrical parameters of blades providing minimal storage density value of tested process.
A study of the static lateral stability of a tillage machine-tractor unit on a virtual stand
Authors: Lysych M N
Published: May 2020

The problems of studying the static lateral stability of machine-tractor units by the methods of multi-body dynamics (MBD) are considered. To create a simulation model, the virtual modeling method in CAD SolidWorks and CAE SolidWorks Motion was used. A 3d model of the MTZ-82.1 tractor was created, equipped with front and rear mounted three-point linkage. At the same time, all the basic structural elements and their geometric and mass-inertial parameters were preserved. The tractor was aggregated with front and rear mounted modular implements. To study the lateral stability, the tractor is mounted on a virtual stand consisting of a fixed base and a platform that changes the angle of inclination. Using a virtual stand, the lateral stability angles of three typical configurations of a machine-tractor unit and a tractor without attachments were obtained. For a tractor without attachments, the rollover angle was 34°, it was equipped with a single-beam rear mounted implement 36° (scheme 0 + 1), with a double-beam rear mounted implement 25° (scheme 0 + 2), with a front mounted implement and a double-beam rear mounted implement 36° (scheme 1 + 2). Verification of simulation data was carried out by comparing with experimental data obtained at a stationary stand. The difference in the values of the critical angles of lateral stability of the tractor, obtained by the results of virtual modeling and using the method of rollover the tractor on a stationary stand, is 3 … 5°.
Fixing a comfort cabin level in modern mining excavators
Authors: Dyorina N V , Velikanov V S , Gasanenko E A , Yuzhakova Yu V
Published: May 2020

Foreign policy events of recent years, expressed in the adoption of sanctions, along with the global economic crisis, have identified the need for import substitution in Russian industry. The issue of import substitution in the mining industry is strategically important, because it determines the vector of development of the Russian economy. Therefore, in order to increase mineral extraction capacities, it is necessary to re-equip the parks with new-generation modern excavators and modernize existing models. In order to increase consumer value, and hence competitiveness, it is necessary to develop excavation equipment in several areas, an important role belongs to improving the materials of the mechanical component of the excavator, as well as improving the interaction of man and machine based on the principles of ergonomics and engineering psychology. The work presents an original software product created to solve the automation problem of the ergonomic reengineering process with the possibility of ranking models of mining excavators by the comfort level in the cab.
Ensuring safe operation of the piping connection of apparatus column type
Authors: Mazina Z R , Zh Seysenov S , Sh Abyzgildina S , Tlyasheva R R
Published: May 2020

To ensure the safe operation of the piping connection of the column type apparatus, it is necessary to determine the potential destruction zones of the pipeline, which can lead to its depressurization and the realization of an accident with the “domino effect”. The article presents an algorithm for assessing potential zones of destruction of piping connection of column-type devices, which can be used to make decisions aimed at improving the safety of hazardous production facilities in the oil and gas industry, both at the design stage and during operation, as well as during diagnostic works.
Investigation of the dynamics of the manipulator drive with a stepper motor
Authors: Emelyanov R T , Klimov A S , Olenev I B , Turysheva E S , Avlasevich A I
Published: May 2020

A mathematical model of the manipulator drive with a stepper motor is developed in the form of inductance equations, which is a source of reactive moment, inertial moment equation and angular velocity. Stepper motors work in the drives of manipulators with continuous movement, when the control action is given by a sequence of electrical pulses. The block diagram of the speed and current control loop of the stepper motor, given by the operator, is calculated in the computer (full step, direction, correction value for reverse speed, acceleration braking), the data is sent to the controller, in the controller the signals pass through the hard logic circuits and are sent to the driver. The stepper motor driver board generates a signal that is fed to the stator windings of the stepper motor. The results of mathematical modeling in MATLAB & Simulink are presented. The dependences of the oscillatory process of the system in the transients of the stepper motor, which are oscillatory in nature, are obtained. A comparison of the results of theoretical modeling of the operation of a step drive with experimental studies is given. As a result of the simulation, additional dynamics arise in the armature current circuit, however, at the point of the nominal mode, it does not significantly affect the angular velocity regulation processes, that is, the speed regulator provides its astatic regulation under the action of a constant load moment.
Power and fuel efficiency of a diesel engine with separate feed
Authors: Anfilatov A A , Chuvashev A N
Published: May 2020

The paper presents the power and economic indicators of tractor diesel in the first place, which depends on the characteristics of the working process and, in particular, on the type of combustion chamber, fuel injection system. In the study of the working process of a diesel engine running on diesel fuel and on methanol with a separate feed, the necessary condition was the preservation of the same values of Nefor each studied load mode. Therefore, the primary goals of the research were to assess changes in the power and economic indicators of a diesel engine when operating on diesel fuel and methanol with a separate feed depending on the change in load.
Study of diesel operation using diesel fuel and methyl fluid
Authors: Anfilatov A A , Chuvashev A N
Published: May 2020

The obtained processing of the results of research in the field of science shows that domestic and foreign researchers have developed the prerequisites, conducted a series of experimental works using high-precision measuring equipment to study the working process of a diesel engine. There are studies on the possibility of using methyl fluid in diesel engines as a motor fuel. At the same time, it should be noted that studies on the use of methyl fluid as a motor fuel were carried out without studying the complex effect on environmental, effective indicators and the performance of the working process in a diesel cylinder. There is little work on the use of methyl-fluid with separate feed in high-speed small-sized diesel engines with air cooling.
Holographic 3-D control devices of the new generation
Authors: Belkin E A , Poyarkov V N , Markov O I
Published: May 2020

The types of new-generation devices designed for non-destructive control over the formation of the topography of a micro relief and the external geometry of a complex surface are determined. Passive control devices: a holographic Profiler operating in the visible range of electromagnetic waves. Active monitoring devices: a holographic Profiler operating in the x-ray range. A tool for structuring a three-dimensional geometric model of a complex shape surface is specified. This tool is a modular geometric approach. The modular-geometric approach allows you to restore the natural curvature of the surface in the local area of the point. The connection between the design of the control device and the method of surface modeling is established.
Method to improve the accuracy of navigation definitions
Authors: Sushkin I N , Korshunov D E , Ruf R A , Grigorev A G
Published: May 2020

The article deals with the method of building a multipath portrait of stationary objects, which allows increasing the reliability of navigation definitions when using satellite radio-navigation systems GLONASS and GPS.
Research of corrosion processes in body material of electrical dehydrator
Authors: Khasbutdinova E V , Naumkin E A , Elizariev A A , Kulakov P A , Rubtsov A V
Published: May 2020

The task was set of determining the dependence of the quantitative indicator of the corrosion rate of the material of the body of the electric dehydrator on the composition of the aggressive medium, the development of measures to improve the quality of the assessment of workability and the assessment of the residual life, as well as ensuring the protection of the parts of the body of the electric dehydrator from exposure to the most aggressive working phases during operation. For research, rectangular samples were made of low-alloy steel 09G2S with dimensions of 20x20 mm and a thickness of 4 mm. To quantify corrosion wear, the samples were immersed for different times in three model media: ordinary water with different NaCl concentrations; the water, which has stood up from oil, with various concentration of NaCl; oil-water emulsion with an oil content in the water in the range from 7.7% to 95%. It was shown that the maximum corrosion wear is observed in a model medium, which is separated water with salt dissolved in it and characteristic of the lower bottom and lower zones of the electric dehydrator body.
Hudrodynamic vibration of knife refiner
Authors: Vikharev S N
Published: May 2020

The aim of this article is to study the hydrodynamic vibration of knife refiners. Such vibration occurs due to hydrodynamic processes during the operation of the mill. A mathematical model is proposed that describes hydrodynamic vibration. The hydrodynamic force that excites the mill oscillations consists of the following main components: impact of the semi-finished product on the auger blades and headset knives; forward and reverse flow interactions; pressure on the knives of the headset. These forces depend on the design and operation of the mill. The error between theoretical and experimental studies does not exceed 20%. Vibration processes of hydrodynamic origin are mainly determined by the impact of the semi-finished product flow on the auger blades at the entrance to the mill. The proposed research technique can be used in other machines, for example, in centrifugal pumps.
Clastering the forest waste processing enterprises
Authors: Anikina Yu A , Zelenskaya T V , Malanina Yu N
Published: May 2020

The article deals with the analysis of industrial development, the scale and degree of raw materials use, as well as the dynamics of waste generation and accumulation and their impact on the environment, convincingly showed the need for a new resource-saving, environmentally and economically sound approach and the organization of industrial production, namely waste-free production. The key center for the development of the timber industry should be the associations of enterprises that aim not only to profit, maximize profitability and increase capital, but also deeply process wood resources as a priority and focus on integrated and comprehensive development.