bluuebunny/crossref_metadata_2025 huggingface dataset:
Determination of the order of stochastically linear dynamic systems by using non-parametric estimation of a regression function
Authors: Medvedev AV , Raskina AV , Chzhan EA , Korneeva AA , Videnin CA
Published: December 2019

In order to determine the accurate order of the model of discrete linear dynamic system, nonparametric algorithm is investigated. The algorithm is based on the application of the rule of selection of significant variables depending on a bandwidth. Selected variables are included in the Nadaraya–Watson regression estimation. The investigated dynamic system was simulated under diverse working conditions. The accuracy of the models estimated with the non-parametric methods is investigated. Computational experiments showed that using the non-parametric algorithms, the model orders can be determined. Because of the large number of cases investigated, the probability of the general validity of this nonparametric algorithm is high.
Development of a program for determining the Hirsch index using Web of Science and Scopus pages (by Research Id and Author Id)
Authors: Khakimov F R , Kharitonova O S , Bronskaya V V , Ignashina T V , Balzamov D S
Published: December 2019

The analysis of Web of Science, Scopus sites to extract the Hirsch index is carried out. Programs to extract the Hirsch index using Scopus and Web of Science pages by Research Id and Author Id are created. A program that is a set of scripts in Python for the implementation of the automatic Hirsch index determination on Web of Science and Scopus sites was developed in this work. Collecting the data of scientists about their h-index which will help in assessing their scientific productivity is possible using this program.
Information security of RFID and NFC technologies
Authors: Masyuk M A
Published: December 2019

The subject of this work is the information security of radio frequency identification technologies and near field communication (RFID, NFC). The work describes and classifies some currently known vulnerabilities of the corresponding protocols and devices that implement them, and considers cryptanalysis tools and software. The result of the work is an assessment of the risk of using certain specific NFC devices, for example, contactless bank cards. The author’s view on the development prospects of the technology as a whole is also presented.
Formalization and study of the game-theoretic model of the optimal distribution of workers in enterprises
Authors: Zaitseva Irina , Svechinskaya Tatiana , Zakharov Vladimir , Zakharova Natalia , Murashko Andrey
Published: December 2019

The paper presents a cooperative game about the appointment for the study of the optimal distribution of workers in the enterprise. Many workers and many enterprises are given. In this model, workers can team up, work in different enterprises and perform different jobs. Workers, teaming up and working in different enterprises, receive wages. The sum of these wages at all enterprises forms the income of the team. It is required to distribute income optimally between employees. A numerical example of finding the Shapley vector is compiled, which, depending on the productivity of workers performing work, shows what income each employee should receive.
Artificial intelligence capabilities classification in business environment
Authors: Vinogradova A I , Fomina Yu V , Gorodischeva A N , Astapenko E V , Bedareva A V
Published: December 2019

It is assumed that objects of artificial intelligence will increasingly invade social space, rebuild the system of social ties, and this restructuring will affect all areas of human activity. Already, nowadays, our life in many respects depends on the decisions made by artificial intelligence. The article discusses artificial intelligence algorithms that can be used in business. As artificial intelligence becomes more popular, most of the company’s employees will need to undergo training to become users of artificial intelligence. They will learn how to use corporate applications based on artificial intelligence, manage data properly and seek help from experts if necessary. The task is to find solutions that will help in the near future to automate routine, template processes. That is tasks that do not require special skills but take the time of qualified employees.
Formation of mechanisms for the development of innovative activity in the industrial production of the Russian Federation
Authors: Yuryeva A A , Kuternin M I , Gibadullin A A , Romanova Ju A
Published: December 2019

The article is devoted to the formation of mechanisms for the development of innovative activity in the industry of Russia. The paper identifies factors that impede the transition of industrial production to an innovative development path, among which the authors highlighted a drop in investment in the Russian economy, a lack of staff and an imperfection of infrastructure support, and a decrease in the commercial interest of industrial enterprises. Based on the results, a system of innovative development of industrial production was proposed, which consists in a balance of negative and positive factors, as well as the need for the participation of the private sector, government agencies and public institutions in shaping the prerequisites for the transition of the economy to an innovative development path. In conclusion, the study presents the main findings and results of the work.
Software for modeling the casting process
Authors: Kukartsev V A , Rukosueva A A , Ogol A R , Kukartsev V V , Tynchenko V S , Khramkov V V
Published: December 2019

The permanent improving of physical and mechanical properties of cast alloys, the improving of old processes and the introduction of new processes allowing to get a precision casting with a soft surface and not demanding the machining and, finally, a constant increasing of the productivity of applied processes change not just technological but economic case of the modern foundry. The computer modeling becomes an inalienable part of processes of the new model design and the engineering of technological processes for its production. It gets a status of an important and often a decisive competitive advantage. The computing of the gating system for casting of 20x5ML steel was completed and the most optimal option allowing getting castings without defects was found with LVMflow modeling program. Output of valid casting was computed, there were finding out a needed metal filling of furnace and selecting batch’s material to get the necessary chemical compound of alloy. Based on condition that the smelting will be carried out on return and fresh materials, a spending of acquisition has been defined. Then the way of computing was used as an initial variant to the checking modeling with ProCAST program which allowed to obtain higher amount of valid castings due to the changing the design of gate system. It let change metal filling of furnace and pick up a need in fresh materials in the different way. The calculation of costs for acquisition is revealed that the using of ProCAST let to achieve the reducing to get casting with saving needed quality of alloy.
Automation of the enterprise financial condition evaluation
Authors: Rukosueva A A , Kukartsev V V , Eremeev D V , Boyko A A , Tynchenko V S , Stupina A A
Published: December 2019

This article is devoted to the topic of automating the process of analyzing the organization financial condition. The paper considers the nature and necessity of conducting a financial analysis of the enterprise as a whole for all organizations, and the tax service in particular, identifies factors affecting the financial and economic situation of the enterprise, and describes the methodology for conducting financial analysis of the enterprise. The study demonstrated the benefits of a comprehensive assessment of the enterprise financial condition. The article discusses the rating assessment features of the enterprise financial condition and describes in detail a system of indicators that gives the most accurate data. The paper reveals the importance for financial analysis of such parameters as profitability, liquidity, autonomy ratio, financial stability ratio and equity ratio. The article analyzes and selects software that meets the requirements of the customer, allowing you to automate business processes. The algorithm of the program for assessing the financial condition of organizations is described, and the input information necessary for the correct operation of the model is described, and the result of its work is described in detail. This article presents the results of testing the program on the data of an existing organization.
Implementation of the Wölfflin formal statistical analysis method using fuzzy logic
Authors: Antamoshkin O A , Bryukhanova E R , Antamoshkina V O , Pikov N O , Kukartsev V V , Tynchenko V V
Published: December 2019

The article describes the software implementation of a formal evaluation system realised Wölfflin statistical analysis method in the MATLAB program package. To build such a system we used fuzzy logic and rules developed by Heinrich Wölfflin, who offered the research of objectives as an “objective fact”. Sets of input parameters were developed based on variables and terms of various objects parameters. Application of the fuzzy sets theory for objects evaluation in order to study the relationships of the used parameters showed convenience and efficiency. Since the fuzzy logic describes nature of human thinking more natively.
The use of deep neural networks to detect alarms in mines
Authors: Kudinov D S , Kokhonkova E A
Published: December 2019

The article discusses the problem of detecting signals against a background of noise for alarms for miners in underground mine workings in case of emergency. The theoretical aspects of linear and non-linear filtering of alarms are given, the solution to the problem of constructing a non-linear filter based on deep neural network (DNN) is described. The simulation results are presented and a comparative analysis of the performance of an individual miner receiver using the methods of linear coherent reception and a DNN filter is made. Neural network training was carried out on model and experimental data obtained at an existing underground mine.
The combined method of textual information analysis for the content of destructive indicators
Authors: Gostyunina V A , Davidyuk N V
Published: December 2019

Modern society is characterized by increased progress in science and technology, accompanied by rapid uncontrolled growth and a variety of textual information, including of destructive orientation, in the information space of the Internet. In this regard, as well as in the context of the potential creation of a “closed” Internet space in the Russian Federation, solving the problem of analyzing text content by searching and automatically identifying destructive information is a priority trend. Within the framework of the paper task of identifying destructive information is reduced to the task of classifying the analyzed textual data based on the presence or absence of destructive indicators. The article describes the universal three-stage combined method, including blocks for normalizing input data, the modified dictionary search of destructive indicators and the Bayesian classifier, which allows staged search of various indicators in the text and automatically classifies it as a “dangerous”.
Information and communication technologies in e-commerce and e-governance
Authors: Derindag Omer Faruk , Canakci Mehmet , Tsarev Roman
Published: December 2019

The development of information and communication technologies has reached a level where their use in business and governance is becoming not only expedient but also inevitable. The Internet and ICT have created the technical and technological foundation that can significantly improve the efficiency of public administration, provide businesses and citizens with access to necessary information, simplify bureaucratic procedures and reduce the time for decision making. The paper describes the new conditions in which the business is developing. The article presents the features of the interaction of e-government and business, the impact of e-government on the development of the economy as a whole. The authors analyzed the process of development of technologies for e-governance and e-commerce. The authors identified the tasks that are solved by means of e-government. Also, the authors set up indicators for evaluating the effectiveness of the e-governance. The implementation of the e-government demonstrates advantages for the further development of the economic sector and the whole state in general.
Performance analysis of DE mutation schemes for constrained LSGO problems
Authors: Vakhnin A , Sopov E , Kustov D , Panfilov I
Published: December 2019

Differential Evolution (DE) is one of the most popular evolution algorithms (EAs) for numerical optimization problems with various difficulty levels. Mutation scheme makes a strong influence in DE performance. It produces new trial vectors based on the current population to improve the previous best-found solution. In this paper, we have analyzed the performance of a wide range of various mutation schemes for early proposed ε-CC-SHADE algorithm. We have used scaled benchmark set of constrained large-scale global optimization (cLSGO) problems to investigate ε-CC-SHADE performance. The new benchmark set is based on IEEE CEC 2017 Competition on Constrained Real-Parameter Optimization. The experimental results have shown the dependence of EA performance on the selected mutation scheme for solving optimization problems with high dimension. Based on the numerical results, we have made conclusions for choosing mutation scheme to increase DE performance for cLSGO.
Genetic search of the optimal configuration of information security system using simulation modeling
Authors: Davidyuk N V , Kosmacheva I M , Belov S V , Kuchin I Yu
Published: December 2019

The paper proposes the approach to develop a data protection system (information security system) that is optimal in effectiveness using evolutionary search methods. This approach is characterized by the ability to take into account the influence of random factors (staff qualifications, equipment failures, attack time on the protection system) when choosing a protection option and the possibility of adapting the protection system to changing environmental conditions. The development of an effective information security system using a genetic algorithm is possible on the basis of data on monitoring events in the system, data received from experts and during simulation modeling of the protection system. The research results are of applied nature and can be used in developments related to the design of information systems, decision support systems in the field of information security.
The dynamic simulation model of calculating equipment purchase with the bond loan
Authors: Boyko A A , Kukartsev V V , Eremeev D V , Bondarev A S , Tynchenko V S , Kukartsev V A , Bashmur K A
Published: December 2019

In this article, the dynamic simulation model of calculating equipment purchase on account of a bond loan is presented. The model has been developed on the basis of system dynamic method using Powersim Studio tools. In the constructed model, calculations were conducted in two ways to determine the cost of capital raising through a bond loan and to issuing company and bond profitability for the investor. To determine the capital cost in the model there was used the optimization mechanism, as a tool to determine an optimal value there was applied an optimizer built into Powersim Studio and based on the genetic algorithm. As a result of calculations, it has been obtained next values: the raising capital cost on account of a bond loan, the bond profitability for an investor, etc. Performed calculations can allow summing up that the developed dynamic simulation model is a quiet universal model and on its basis different researches associated to varied aspects of equipment purchase account on issuance bonds are able to perform.
Designing cyber-physical digital production of the Industry 4.0
Authors: Zakoldaev D A , Shukalov A V , Zharinov I O , Zharinov O O
Published: December 2019

The task is to design projection route of the Industry 4.0 item designing digital company. It is clear that existing projection solutions for production divisions cannot be applied to create smart factories. A creation feature of the new type company creation is cyber and physical systems semantic form representation implementation in production division functionality ways descriptions which are applied in the company virtual environment. An Industry 4.0 companies has equal representation forms in mathematical models and in ontology models. To project such companies they must apply the universal cyber and physical systems base models and the special cyber and physical systems of specific purpose models. There is a projection route of the Industry 4.0 cyber and physical production.
Influence of grains and grain boundaries on hardness values
Authors: Matyunin V M , Abusaif Nuha , Marchenkov A Yu
Published: December 2019

Many physical and mechanical properties of materials are connected with their microstructure. Recently, technologies to control the microstructure of materials have been well developed in order to more accurately determine the necessary properties. Therefore, the hardness values of samples from technically pure copper with different average grain sizes are determined. The effect of grain boundaries on the hardness values of a sample from a homogeneous copper structure is studied. The grains effect of different structural components and grain boundaries effect on the hardness values of a sample from steel C45 were also investigated. The grains number in the indentation zone was determined to more correctly obtain the hardness of materials with grains of different structural components, for example, perlite and ferrite.
Rationing and vibration monitoring of knife refiners
Authors: Vikharev S , Sivakov V , Sannikov A
Published: December 2019

The subject of the research is rationing and monitoring of the vibration of knife refiners. GOST 26493-85, specifying the permissible values of the vibration amplitude of the mills, is outdated. This standard does not take into account new designs of knife refiners and the requirements of national and international standards. It is proposed to establish two criteria for assessing the vibration state of the refiners. The first criterion normalizes the amplitude of vibration in octave strips of frequencies, while the second criterion specifies the vibration trend on the general level. It is proposed to use the vibration velocity as the measured parameter. The necessity of separating the refiners into two groups was revealed: with a disc or cone diameter up to 1000 mm and with a diameter over 1000 mm. The boundaries of zones and vibration trends are determined: good; satisfactorily; need improvement and unacceptable. After that, a decision is made to limit the functioning of these machines (prevention and stop). The introduction of standards and vibration monitoring will accelerate the transition to repairs of machines on the technical condition. Methods of rationing and monitoring can be used in other industries, for example, in the mining and metallurgical industries.
The relationship between abrasive wear behavior and chemical structure of polyurethane urea elastomers
Authors: Senichev V Yu , Pogoreltsev E V
Published: December 2019

The relationship between abrasive wear and the chemical structure of molded polyurethane urea elastomers based on polyethers and polyesters was investigated. The regularities of the influence of the hard blocks content in the polymer chain on the abrasive resistance of the studied elastomers in a wide range of their hardness values were revealed.
Ergonomic component when designing mining machines: new scientific and practical works
Authors: Velikanov V S , Dyorina N V , Pikalova E A , Yuzhakova Yu V
Published: December 2019

This article is devoted to a review of publications in the field of ergonomic reengineering of mining machine workplaces. It has been established that the efficiency and quality of labour operations directly depends on the level of ergonomic support of the operator’s workplace. The authors of the paper present the publications of foreign scientists dealing with ergonomic support of mining machines, as well as machinery and equipment of related industries.
Ecosystem of education competence center of the Industry 4.0
Authors: Zakoldaev D A , Shukalov A V , Zharinov I O , Dorofeev N I
Published: December 2019

The task is to organize an educative process to prepare the specialists in direction of the Industry 4.0 paradigm. The Industry 4.0 paradigm means to create industrial companies with digital informative technologies and which function automatically. To work in such companies, they must prepare the specialists of profile competences. It is clear that the educative program scientific content must contain the property of interoperability for all technologies which are used together in a digital production. To attain informative technologies, they need to create technological and branch centers of competences which are specialized preparation of highly-qualified personnel. There is a structure and components description for an Industry 4.0 competences branch center.
Analysis of the indentation size effect on the hardness measurements of materials
Authors: Matyunin V M , Abusaif Nuha , Marchenkov A Yu
Published: December 2019

The influence of the indentation size effect on the hardness measurements of materials using indentation method was studied. A method for determining and comparing the hardness of two different materials with studying the indentation size effect was developed. To identify the influence of the indentation size effect on the Vickers hardness of materials with different levels of hardness two-dimensional parameters α and γ were proposed.
Approximation of machine tool experimental thermal characteristics by neural network
Authors: Pozevalkin V V , Parfenov I V , Polyakov A N
Published: December 2019

The article evaluates the effectiveness of an artificial neural network use for mathematical processing of the machine tool experimental thermal characteristics. To improve the quality of approximation and the accuracy of forecasting, two types of neural networks were used, namely a network of radially basis functions and a generalized regression neural network. The results of a full-scale thermal experiment of the idling 400V machine tool are presented. Computational experiments of the thermal testing results of a metal cutting machine were carried out to build and test the models under study. The results showed that neural networks perform better than the classical power polynomial model in terms of accuracy and approximation quality. Thus, neural networks can be used to approximate the experimental thermal characteristics of the machine tool in real time.
Methodology and practical application of the automation system for unmanned spacecraft design
Authors: Akhtulov A L
Published: December 2019

The problem of automation of design of automatic spacecraft structures taking into account their dynamic characteristics are considered. According to the results of the research, the procedure of unification of the method of automatic formation of stiffness and inertia matrices of complex spatial structure is proposed. The procedure based on the transfer functions method allows to determine the level of loads of a certain type. The proposed approach shows the best results in bench tests of automatic spacecraft structures and can be used to calculate complex mechanical systems of machines and assemblies for various purposes.
The development of rolling-stock virtual simulator
Authors: Staroverova N A , Shustrova M L , Zatsarinnaya Yu N
Published: December 2019

In the article, development stages of the virtual simulator Duomatic 09-32 hardware-software complex intended for drivers-operators training in driving of the special self-moving Duomatic 09-32 rolling stock are considered. In the presented research the data domain is studied, the concept of the virtual model basis of the Duomatic 09-32 simulator is developed and the system is designed. The bearing – tamping - leveling machine Duomatic 09-32 is the special machine on railway transport for railway track bearing in a longitudinal and cross profile and in respect of and also for tamping of ballast. It is applied at construction, repair and the current maintenance of a railway. The simulator considers many aspects of railway transport management process (structures, people on the ways, railway signs, traffic lights etc.) that allows the operator to gain qualitatively skills of the analysis and information processing and actions execution for management of train structure depending on a situation. Considering responsibility of the engineer not only for himself, but also for other participants of the movement, management of train structure is considered as difficult process. It demands emotional pressure, ability to constantly analyze a surrounding situation and to predict development of the situation. The simulator allows to receive necessary skills and makes drivers training activity more convenient and safe.
Experimental study of double-sided face grinding machine tool
Authors: Nikitina I P , Polyakov A N
Published: December 2019

The work considers the methodology of experimental studies of double-sided face grinding machines on the criterion of heat stability. The proposed methodology includes: procedure of grinding process simulation; procedure of temperature measurement; procedure of determining the mutual angular position of the grinding wheels due to thermal deformations; procedure of machining error measurement. The described techniques allow you to fine-tune the machine under production conditions. Preliminary full-scale test of a double-sided face grinding machine showed that excess temperatures were distributed nonuniform over the elements of the load-bearing structure of the machine tool when grinding an industrial batch of cylindrical rollers. When idling the end face of the spindle headstocks and bed had the highest excess temperature. When grinding the surface of the machine units, located in the immediate vicinity of the grinding zone, had the highest temperature. The experiments carried out confirmed the coordination of the nature of the change in excess temperatures at characteristic points and cutting coolant when simulating the grinding process on a machine with the corresponding experimental data obtained on a working machine.
Using rhythmograms to diagnose mechanical systems
Authors: Balakin D A , Shtykov V V
Published: December 2019

The possibility of using a rhythmogram for the diagnosis of mechanical systems is discussed. The rhythmogram is obtained using the method we developed for processing quasiperiodic pulsed signals. The method is based on the principles of the theory of optimal filtration, the theory of wavelet transform and Hermite transform. The efficiency of the diagnostic method is demonstrated by the example of the operation of bearings of a gas turbine engine. A conclusion is given on the further development of the method for assessing the states of mechanical systems.
Fuzzy estimates of resonance frequencies for three-layer composite cylindrical panels in smart aerospace and industrial structures
Authors: Storozhev S V , Storozhev V I , Bolnokin V E , Hai Duong Minh , Mutin D I
Published: December 2019

Is developed a numerical-analytical fuzzy-sets methodic for a analysis of the uncertain endogenous parameters of the resonant frequencies in a theoretical model of vibration of thin orthotropic composite three-layer cylindrical panels with small curvature having of symmetrical structure with two external transversally-isotropic piezoelectric layers and with internal orthotropic layer from linearly viscoelastic composite material if available of scatter errors in values of their structural exogenous physical-mechanical and geometric parameters. The technique is based on the transition to fuzzy-interval arguments in the analytical representations for the studied resonant frequencies and in the application of the heuristic principle of generalization to obtain of estimates for the values of such resonant frequencies in the form of normal fuzzy sets. An example of the implementation of the technique under consideration is presented.
Improving the quality of the manufacturing process of turbine blades of the gas turbine engine
Authors: Vdovin R A
Published: December 2019

This paper describes the results of research and development work, which lead to an increase in the quality of the technological process of manufacturing the working turbine blades of a gas turbine engine. The mathematical description of the four-zone process of directional crystallization made it possible to select the most optimal thermophysical parameters of the casting process that affect the macrostructure of casting the blades. Digital modeling of casting technology, taking into account the proposed mathematical models, as well as the boundary, contact and initial conditions of the process, made it possible to most reliably describe the temperature front distribution in the crystallization zone at discrete points for any moment in any section. The temperature-time optimization of the technological process for casting turbine blades made it possible to select the optimal temperature conditions for the respective areas of the foundry plant, which ultimately allowed a 20% reduction in rejects associated with the mismatch of the macrostructure of castings the blades to the standard.
Software engineering math for network applications
Authors: Golosnoy A S , Provotorov V V , Sergeev S M , Raikhelgauz L B , Kravets O Ja
Published: December 2019

Software creation for cyber-physical systems is based on complex algorithms. A feature of the modern organization of production and commerce is the consolidation of participants in these activities into complex network structures. In this case, a scientifically based analysis of network processes of a physical and economic nature is necessary. In the present paper, the formalization of the problem is carried out using graph theory. A mathematical model based on partial differential equations, defined on a graph with one cycle is developed. The analysis comes down to the important problem of expanding a given function into eigenfunctions of the Sturm-Liouville tasks with measure on the graph. The obtained results are fundamental for cyber-physical systems of a wide range of applications.
Automation technologies for fish processing and production of fish products
Authors: Komlatsky V I , Podoinitsyna T A , Verkhoturov V V , Kozub Y A
Published: December 2019

The fish processing industry applies a small number of automation technologies compared to other industries. Their number should be increased despite automated food processing problems and hygiene requirements. Automation and implementation of robots can reduce production costs and improve product quality. The issues of designing automation systems for the fishing industry are analyzed. Automatic control systems can control quality of fish and fish products. Automated systems receive, freeze, sort, cut, wash, salt, dry, smoke, press, cool, package and store fish and fish products. Modern technological tools are equipped with automatic control systems. Some of them include specialized automation and robotic units equipped with microprocessor control systems. Application and implementation of automation systems for processing fish are described. Future trends are discussed.
Structure and phase composition of diffusion zones formed as a result of homogeneous and heterogeneous reactions at the boundary of the AD1-Cr15Ni60 composite
Authors: Shmorgun V G , Bogdanov A I , Kulevich V P , Shcherbin D V
Published: December 2019

This paper presents the study results of the diffusion interaction processes at the interlayer boundary of explosion welded Cr15Ni60-AD1 bimetal during the occurrence of homogeneous (at the solid – solid interface) and heterogeneous (at the solid – melt interface) reactions. It was shown that the diffusion zone formed during homogeneous interaction has a layered finely dispersed structure, while in a heterogeneous one it is predominantly needle-shaped with large fragments of the structure. Diffusion zones are characterized by heterogeneity in chemical composition, while their phase composition is almost identical: CrAl7, FeNiAl9, (Fe,Ni,Cr)Al9, (Fe,Ni,Cr)Al5, NiAl3, (Ni,Fe,Cr)Al. It has been established that the transition from the interaction at the solid – solid interface to the interaction at the solid – melt interface leads to a significant acceleration of diffusion processes.
Production planning process effectiveness improvement through the automated system introduction
Authors: Skorniakova E A , Sulaberidze V Sh , Semenova E G
Published: December 2019

The necessity of special automated systems creation for the effective organization of industrial enterprise processes is substantiated. The effectiveness indicators of the production planning process are defined and the criteria for their evaluation are determined. The results of an automated planning system introduction at several instrument-making enterprises are presented, according to which an improvement in all effectiveness indicators was obtained, namely: the number of mistakes in the data collection subprocess was reduced by 85%, the time of production plan creation was reduced to 1 minute, the mistakes of plan creation process were completely eliminated, the time of plan and it versions assessment was reduced by 60%, and the timing of the studied planning subprocesses was completely observed.
Technological equipment parts rough surfaces elastic-plastic strain under compression mathematical modelling
Authors: Gulyaev V A , Kozlov A A , Loginov N Y
Published: December 2019

This article discusses dimensions and similarity analysis methods, which are the theoretical basis mathematical modeling in the study of the contact interaction of technological equipment parts fixed interfaces. In the solid mechanics mathematical modeling is used mainly in experimental studies of stress fields, strains and displacements arising under load in the model, geometrically similar to the real element in nature (prototype).
Estimated delamination of an elastic-plastic liner in a high-pressure metal composite vessel
Authors: Egorov Anton V
Published: December 2019

To carry out delamination analysis in high-pressure metal composite vessels, a software approach is proposed in which the dynamic calculation algorithm is implemented in software systems. The algorithm is built on three points: the introduction of technological deviations (at the level of permissible defects), the determination of a three-dimensional stress-strain state, and a real-time solution. As a calculation program, LS-DYNA was selected in a dynamic formulation with the structure divided into 3D solid elements and unilateral constraint on the contact surface of the metal (liner) and composite shells was introduced. A geometrically and physically nonlinear problem is solved. The moment of liner delamination from the composite shell is determined by the change in the liner stress-strain state and by the liner deformable surface in time presented visually.
The use of platinum metals to increase the corrosion and strength characteristics of industrial titanium casting
Authors: Andreev Yu V , Kozlovskaya A E
Published: December 2019

The materials used for technological equipment manufacture should have high mechanical strength, chemical and thermal resistance. Technical titanium is widely used for these purposes. The article studies the effect of small palladium additives on titanium chemical and mechanical properties. It was revealed that the introduction of 0.23% palladium during titanium smelting has little effect on the mechanical properties of doped titanium, but it increases its resistance to sulfuric and hydrochloric acids.
The effect of hard segments structure on the functional properties of polyurethane elastomers based on oligoesterurethane epoxides
Authors: Senichev V Yu , Slobodinyuk A I , Makarova M A , Savchuk A V , Pogoreltsev E V
Published: December 2019

A series of polyurethane elastomers based on polyester urethane epoxy oligomers and cycloaliphatic diamines was synthesized. The relationship of the physico-mechanical properties of these elastomers with the structure of their polymer chain was studied. It was established that various options for increasing the strength of the final elastomers can be implemented, depending on the type of initial oligoesters and diamines. They may be associated with an increase in the degree of microphase separation between hard and soft polymer segments, and with partial crystallization of soft segments as well.
Research of load and speed parameters of the health of rolling bearings
Authors: Kovalsky B I , Lysyannikova N N , Knyazev K A , Shram V G , Lysyannikov A V , Kravtsova E G
Published: December 2019

The influence of the lubricant base and the rotation speed of rolling bearings on the formation of an elastohydrodynamic layer is studied. The method of control parameters of the formation of an elastohydrodynamic layer in rolling bearings is presented, which allows one to determine the parameters at which an elastohydrodynamic layer is formed on the surfaces of the rolling bodies. The results of a study of the effects of radial, axial and common loads are presented. As a result, the experimental data were obtained and analyzed, and graphical dependencies were constructed that clearly demonstrate the formation of an elastohydrodynamic layer.
Dynamic method of control of weight of cargo transported by vehicle
Authors: Egorov A V , Dorohin S V , Lysyannikov A V , Kaizer Yu F , Kuznetsov A V , Lysyannikova N N , Tyukanov V L , Lunev A S
Published: December 2019

The existing methods of control of the total weight of vehicle are based mainly on strain measurement methods and are implemented in the form of mobile or stationary weighing platforms. The main drawback of such systems is the need to enter the vehicle on the weighing platform. In the context of a developed road network, this approach does not allow to track the weight of all vehicles moving on roads, and thus creates conditions for incomplete identification of vehicle, the total weight of which exceeds the permitted for a particular road. Existing strain gauge weighing systems, placed directly on the vehicle, tend to deteriorate the accuracy of weighing for a certain time of operation. The several works performed in the 90s of the twentieth century describes the method of dynamic control of the weight of vehicle and train. However, the method does not contain a clear theoretical scientific justification and is based on experimental data, so this method has not been further developed. The article presents a theoretical justification of the dynamic method of controlling the weight of vehicle, implemented on the basis of the analysis of the dynamics of angular accelerations of the motor of a vehicle during acceleration on identical surfaces in the empty and loaded state.
The study of casting defects in steel 35HGSL
Authors: Skryabin M L , Likhanov V A
Published: December 2019

In this research work the classification of defects of castings obtained by electric arc smelting is considered. Of particular interest to researchers is the rock-like and naphthalene fractures. A stone-like fracture is characterized by a clearly defined uniform surface over which the fracture occurs. Grain boundaries are partially soluble in the austenite phase, consisting of fine individual particles or films formed from molten eutectics. It is also worth noting that most often the stone-like fracture is observed at the grain boundaries.
Improving the technology of sorting wood chips obtained from stump and substandard wood by resin content
Authors: Polyanin I A , Makarov V E , Egorov A V , Lysyannikov A V , Kaizer Yu F , Voldaev M N , Stepanova K S
Published: December 2019

The paper considers the issues of the most complete use of wood biomass through the widespread use of a secondary type of raw material - stumps and substandard wood, which under current conditions of logging is 15-25 % of the total volume of harvested wood. The issues of sorting technological wood chips obtained from stumps and substandard wood in an electrostatic field by resin content. Existing methods for sorting technological wood chips by resin content. A new method of sorting technological wood chips for low and high resin in a constant high voltage electrostatic field has been proposed, which can be recommended for industrial implementation. A mathematical model of the deviation of technological wood chips in an electrostatic field depending on the distance between the electrodes and the voltage between them has been obtained. The amount of deviation of the technological wood chips is directly proportional to the amount of voltage generated between the electrodes of the electrostatic separator and inversely proportional to the weight of the wood chips and the distance between the electrodes. The optimal straightened sinusoidal voltage for the separation of wood chips into high resin and low resin has been determined. An experimental setup has been developed and experimental results are presented. The main modes of operation of the plant for sorting process wood chips in an electrostatic field are determined. The dependences of the effect of tar and moisture of technological wood chips on its deviation in a constant electrostatic field with a free fall are obtained. With an increase in resin content, an increase in the deviation of wood chips in an electrostatic field occurs. It has been established that the moisture content of process wood chips in the range from 7 % to 22 % significantly affects the chip deviation, and in this range it is possible to sort technological wood chips using constant voltage to high and low resin. Technological schemes for sorting wood chips obtained from stump and substandard wood at the enterprises of the wood chemical industry are proposed. The main conclusions and recommendations are made; the main dependencies are given.
Dynamic methods for controlling the weight of the aircraft and helicopter
Authors: Egorov A V , Lysyannikov A V , Kaizer Yu F , Dorohin S V , Kuznetsov A V , Kaidakov A M , Bogdanov E N , Lysyannikova N N
Published: December 2019

Despite the achieved level of development of methods and means of controlling the weight of aircraft, the number of emergencies associated with exceeding the allowable take-off weight of aircraft remains significant. Therefore, the question of the development of new methods for controlling the weight of aircraft, either immediately before take-off in the course of movement along the runway or immediately after take-off at the minimum flight height, remains relevant. This paper presents a scientific and technical substantiation of dynamic methods for controlling the mass of aircraft taking off and helicopters, based on introducing into the flight test program measurements of horizontal (for airplanes) and vertical (for helicopters) aircraft accelerations before take-off (for airplanes) and during take-off ( aircraft) with a maximum take-off weight, and their comparison with horizontal (for airplanes) and vertical (for helicopters) aircraft accelerations measured during operation takeoff (for airplanes) and during takeoff (for helicopters) with an unknown weight, respectively.
About the influence degree of ergonomic properties on the generalized ergonomic indicator of an excavator using a set of methods
Authors: Dyorina N V , Velikanov V S , Rabina E I , Polyakova L S
Published: December 2019

The work considers the issue of using various methods for expert assessments in determining the influence degree of ergonomic properties on the ergonomics of a mining excavator. It is established that owing to the variety of the used methods the final result is quite comparable and acceptable.
Photovoltaics in horticulture as an opportunity to reduce operating costs. A case study in Poland
Authors: Lakomiak A , Zhichkin K A
Published: December 2019

Fruit farms can become prosumers - producers of electricity for their own needs, without the possibility of selling overproduction. The subject of the study were the costs of electricity in fruit growing. The paper presents a research hypothesis that reads: Agriculture-Polish orcharding can contribute to an increase in the share of energy produced from renewable sources. The aim of the study was to determine the impact of installed photovoltaic panels on the cost of fruit-growing activities. The research methodology was based on a case study. An orchard farm producing apples and peaches on a total area of 33 ha was presented. The costs of fruit growing were developed and the share of electricity consumption costs was indicated in them. Studies have shown that a return on investment in photovoltaic panels is possible after about 8 years. Energy costs account for around 6% of the cost of an orchard. Installing photovoltaic panels on the roofs of cold stores will reduce these costs by half. The main conclusion of the study is that the costs of electricity consumption can be reduced in Poland as a result of the use of fotovoltaic installations, provided that you receive financial support from the state or other institutions, e.g. in the form of subsidies or exemption from agricultural tax.
Adaptive hybrid climate control in the manufacture of microelectronics
Authors: Aleshkin N A , Aleshkin A P , Petrushevskaya A A
Published: December 2019

The article discusses the procedure for hybrid control of microclimate parameters in a clean room intended for the production of electronics, using a combination of technologies for recurrent estimation and fuzzy regulation. On the basis of the developed procedure, a smooth assessment of the current values of the controlled parameters and compensation control adequate to disturbing influences are provided. The developed technology is designed to provide an increase in the quality indicators of overcoming transient processes, and, consequently, to improve the efficiency of controlling the climate dynamic system during the implementation of the production process for manufacturing electronics with increased requirements for its operational characteristics. Modern information systems are characterized by the rapid development of the capabilities of the used hardware. At the same time, in order to achieve maximum results, the use of artificial intelligence technologies is inevitable, the most effective implementation of which requires adequate consideration of all available information about the controlled production process. In the formulation under consideration, the complexity of the problem is determined by the need to meet mutually conflicting requirements while ensuring specified values of climatic parameters. The specificity of the control problem is determined by the fact that a change (restoration) of the values of one controlled parameter should not lead to a loss of the set values of other climatic parameters. To achieve the described target effect, it is proposed to supplement the procedure of recurrent climate monitoring with a fuzzy logic mechanism when changing values of climatic parameters.