bluuebunny/crossref_metadata_2025_split huggingface dataset:
Analysis of the properties of castings obtained by direct synthesis based on iron-containing industrial waste engineering
Authors: Bikulov R A 
Published: December 2020

Abstract
The production activity of large machine-building enterprises is associated with the formation of quite large quantities and a diverse range of waste, including a dispersed type, which pose a great problem for their involvement in the technological process, both because of their dispersion, and the presence of non-metallic inclusions and an oxidized form of existence of metal elements. The functioning of large metallurgical and machine-building companies leads to the formation of a large number of different man-made waste, which can be either in a coarse or fine state [1-7]. Processing of such man-made waste is quite difficult, since they are in an oxidized state. The technological process for utilization of iron-containing dispersed waste of mechanical engineering is proposed.
Method of increasing the fire resistance of wood
Authors: Gazizov A M , Popova E V , Kuznetsova O V , Akhmadullin A A 
Published: December 2020

Abstract
The use of impregnation based on soda ash and boric acid as one of the ways to increase the fire resistance of wood is considered. The method of testing the initial impregnation on three types of wood is described. The result of the tests was a justification for the use of this impregnation to increase the fire resistance of wood.
Influence of surface structures on torque of VT6 alloy cortical screws
Authors: Skvortsova S V , Spector V S , Sarychev S M , Orlov A A 
Published: December 2020

Abstract
The paper investigated the effect of the surface structure of VT6 alloy cortical screws after various modes of vacuum ion-plasma treatment on the magnitude of the torque when they are screwed and twisted into the threaded holes of titanium plates for bone osteosynthesis. It was shown that nitriding of the screw heads increases the surface hardness by 2 times, and the formation of the nitride layer-by 3 times. It was found that the maximum decrease in torque when unscrewing is observed for nitride coated screws.
Engineered nanomaterials for energy sector: market trends, modern applications and future prospects
Authors: Inshakova E , Inshakova A , Goncharov A 
Published: December 2020

Abstract
The article reveals key trends of the development of the global market for engineered nanomaterials and focuses attention on the energy related market segment based on the studies and generalization of recent analytical reports and research publications in this field. The authors substantiate rapid market growth of the energy related nanomaterials taking into account available proving their unique electrical, thermal, mechanical, optical and catalytic properties, and increasing patent activity in the field under consideration. These factors significantly expand the application prospects of energy related nanomaterials in generation, conversion, storage, saving and transmission of energy in the conventional and renewable energy systems. Within that framework, modern and future applications and growth prospects of mostly used nanomaterials in the global energy market (graphene, fullerenes involving carbon nanotubes, and other carbon nanostructures, materials with the nanolayer structures, metal oxide nanoparticles, and some others) and most recent nanomaterials in the market (aerographene / graphene aerogel, 3D and 4D-printed aerogels) are characterized.
Investigation of the influence of adding MWCNTS to an alkyd-urethane coating on the thermal conductivity coefficient of the coating
Authors: Eddin B E , Ali A J , Hadi J M , Tugolukov E N 
Published: December 2020

Abstract
In this study, the influence of adding MWCNTs to an alkyd-urethane coating has been studied on the thermal conductivity coefficient K of the coating, to determine its potential for use in solar water heating applications where the low value of the thermal conductivity coefficient of the polymeric coatings is an obstacle to their use as absorbent surfaces in solar collectors. A light source, a halogen lamp, was used as a heat source; the temperature measurement was done using an infrared thermometer. The results showed an enhancement in the thermal conductivity coefficient of 9.16% when it is added 4 % of the MWCNTs.
Synthesis of submicron titanium carbide in a direct current arc discharge plasma by a vacuumless method
Authors: Pak A Y , Gumovskaya A A 
Published: December 2020

Abstract
This paper studies the possibility of obtaining ultrafine cubic titanium carbide in the direct current arc discharge initiated between graphite electrodes in ambient air. According to X-ray diffraction data, there are 3 crystalline phases in the synthesized powder: graphite, initial titanium and cubic tungsten carbide. Based on transmission electron microscopy data, particles with sizes of 100-300 nm containing titanium and carbon are identified in the synthesis product. These objects are characterized by a structure corresponding to the cubic phase of titanium carbide. The applied vacuumless electrotechnical method is known for its ease of implementation, high productivity, and high energy efficiency in comparison with electrical analogues.
Analysis of boron carbide powder by high resolution transmission electron microscopy
Authors: Martynov R S , Vassilyeva Y Z , Mamontov G Y 
Published: December 2020

Abstract
We have reported the experimental results on analysis of a powder based on boron carbide. The powder was obtained by a non-vacuum electrical arc discharge method and analyzed by high resolution transmission electron microscopy. According to the results of analysis, boron carbide particles coated with a graphite-like carbon shell were identified in the powder, respectively, the particles are characterized by a core-shell structure.
Heat-resistant constructional materials based on thermoplastic polysulfones
Authors: Borodulin A S , Kallinikov A N , Storozhuk I P , Alekseev V M , Tereshkov A G 
Published: December 2020

Abstract
The analysis of achievements in the field of creating composite materials filled with fibers based on high performance thermoplastics, as well as methods for producing prepregs based on activated unidirectional carbon fibers in form of layers and synthesized specifically for that purpose polyethersulfone based on 4,4’-dioxidiphenylsulfone and 4,4’-dichlodiphenylsulfone with an optimal molecular weight was conducted.
Deformation and strength properties of silicone magnetoactive elastomers
Authors: Valiev H H , Astakhov K N , Ja Minaev A , Stepanov G V 
Published: December 2020

Abstract
New elastomeric silicone composites with ferromagnetic fillers have been synthesized. The deformation and strength properties of these magnetoactive elastomers in compression with additional imposition of an external magnetic field have been studied. The influence of a filler microparticles restructuring in external magnetic fields, established earlier by means of atomic force microscopy, on the complex of properties of these composites is discussed. The prospects of creating new materials and devices based on the characteristics of such magnetoactive elastomers have been revealed.
Decision-making support when determining the heating systems parameters for hydraulic presses
Authors: Karpushkin S V , Mokrozub V G , Malygin E N , Karpov S V 
Published: December 2020

Abstract
The problem formulation for decision-making support during determining the parameters of the heating systems for hydraulic presses and its decomposition, based on the optimization problem of elements of the heating system, mathematical models of the functioning of the heating systems elements of hydraulic presses, is proposed. The structure of the decision-making support system for the parameters determination of the heating systems of hydraulic presses, the functions of its elements, information flows between them is determined. The information models for the information storage and processing on the initial data and the results of solved problems are developed.
Expanding the field of applied research of CAD / CAM / CAE technologies through ethnographic museology
Authors: Trushkova I Yu , Grachev S P , Flaksman A L , Prigarin A A 
Published: December 2020

Abstract
Russian regional studies on the frontier of technical and humanitarian sciences demonstrate specific directions of digitalization of the ethnographic museum space. The need for improving the socio-cultural environment in the constituent entities of the Russian Federation, solving IT problems of local museums, processing significant amounts of ethnocultural information determine the areas of joint - engineering and ethnographic - scientific research. The experience of these works at Vyatka State University has been gained in recent decades. The sources for such scientific activity are the collections of ethnographic expeditions of the university since 2003. They include material and written sources. There are ethnographic and engineering (digital) data processing methods, specific museum work techniques among the research methods. Specific areas are the digital presentation of specific ethnographic objects, the development of virtual expositions and exhibitions, the creation of a virtual ethnographic museum / scansen, the study of electronic “feedback” with visitors, the creation of an ethnographic data bank for funds. The article provides a specific set of software products. Elements of specific algorithms for applying the IT product for the main types of museum activity — scientific research, exposition, stock work, and contacts with visitors — are shown. The practical value of the considered joint border scientific research for modern regional communities is obvious. The beneficiaries of the results are the student and teaching communities in universities, the fields of culture, education, tourism, civil society, and law enforcement agencies. A special effect of cyber ethnography is the remote use of ethnocultural heritage in museums.
A knowledge base model of the computer-aided design system for solids of revolution press-forging
Authors: Kanyukov S I , Konovalov A V , Muizemnek O Ju 
Published: December 2020

Abstract
The main problem of creating computer-aided design systems (CAD) for press-forging processes is associated with a weak formalization of the subject area. An effective way for solving this problem is to provide the corresponding CAD with expert system properties when weakly structured knowledge is formalized in a certain way and transferred to the knowledge base. The paper describes the concept of developing a production knowledge base model of the computer-aided design system for solids of revolution press-forging. Some specific technological problems are examples of this model application in relation to tasks with point and interval solutions. The proposed concept of developing the knowledge base allows us to more formalize the subject area under consideration, to develop genetic algorithms for solving weakly structured problems of computer-aided forging process design, to ensure the work of appropriate programs without their adjustment to changing production conditions, and it can be used in other subject areas.
Design and modeling of new technologies with advanced morphological approach as CAI method
Authors: Rakov D L 
Published: December 2020

Abstract
Innovation processes are highly dynamic and competitive. Their effectiveness depends on the speed of reaction to changes in the market and economic situation. Therefore, there is a need for a comprehensive software to support the innovation process throughout the product life cycle. The latest tendency in design research show that great efforts are being made to implementation of CAI (Computer Aided Innovations) as part of CADx systems. This paper presents and discusses a heuristic discursive Advanced Morphological Approach (AMA) for solving the design problems on conceptual stage in uncertain conditions. This approach allows you to search for innovative solutions at the early design stages, form variant clusters, generate a variety of sub-optimal variants, choose the most rational alternatives and compare them. It is based on the provisions of the system, cluster analysis and morphological methods.
Excitation of waves by a high-speed source moving along the border gradient-elastic half-space
Authors: Antonov A M , Erofeev V I , Malkhanov A O 
Published: December 2020

Abstract
Within the framework of the mathematical model of the gradient-elastic continuum, i.e. medium, the stress-strain state of which is described by the strain tensor, the second displacement vector gradients, the asymmetric stress tensor and the moment stress tensor, the problem of generating disturbances by a moving source is considered. It is assumed that the source moves at a constant speed along the boundary of half-space. The problem is considered in a two-dimensional formulation, when all processes are homogeneous along the horizontal transverse coordinate axis.
Impact of technological errors of design parameters of broadband radio signals mixer based on resonant-tunneling diode on its electrical characteristics
Authors: Cherkasov K V , Meshkov S A , Makeev M O , Shashurin V D 
Published: December 2020

Abstract
The research object is a resonant-tunneling diode based broadband radio signals mixer (RTD BM) of 4-8 GHz range. The purpose of this research is to perform statistical analysis of the RTD BM design parameters’ technological variation impact on its electrical characteristics’ variation. RTD BM’s electrical characteristics variations under the impact of its nonlinear elements’ I-V characteristics, topology parameters and substrate thickness, and relative permittivity technological errors, as well as under their combined impact, were obtained. The ranking of the considered RTD BM’s parameters technological variations’ contribution to its electrical characteristics’ distributions was carried out. It was revealed that the biggest contribution to RTD BM’s electrical characteristics’ distribution is made by the technical errors of its nonlinear elements’ I-V characteristics. RTD BM’s electrical characteristics distributions under all design parameters’ technological errors combined influence can be used in RTD BMs’ batch reliability analysis performed by computer statistical experiment means.
Modelling attacks in self-organizing wireless sensor networks of smart cities
Authors: Meleshko A V , Desnitsky V A , Kotenko I V 
Published: December 2020

Abstract
Nowadays self-organizing wireless sensor networks for solving the problems of arranging operational processes in smart city systems are becoming rapidly developed and widespread. Such networks are used to collect and aggregate data from physical sensors of devices as well as for its processing and transmission over the network in conditions of time-varying loading characteristics of the communication channels, changing location of devices and their operating modes. The paper discloses an approach to modeling and analysis of attacks aimed at compromising devices, data and services of smart city systems built on the basis of self-organizing wireless sensor networks.
Modeling traffic streams on a road network section
Authors: Kushchenko L E , Kushchenko S V , Novikov A N , Novikov I A 
Published: December 2020

Abstract
The paper considers the issues of modeling traffic flows. Statistical data on the number of vehicles accumulating in front of the stop line for red lights are collected and analyzed, thereby determining the length of the queue of the traffic stream. The degree of influence of the driver’s reaction time on determining the average speed of the traffic stream on the road network of the city of Belgorod is considered. A fuzzy inference model based on the main parameters of the traffic stream is developed. A rule base is formulated that enables one to determine the average speed of traffic stream depending on the parameters of the traffic stream. The established dependence can be used when programming the controller or hardware implementation of the corresponding fuzzy control algorithm in the form of a decision table.
Sampling method for evaluation and control of industrial product quality
Authors: Lukina S V , Makarov V M , Ovchinnikov S A , Zimovets O E 
Published: December 2020

AbstractThe article develops a sampling method to control and evaluate the quality of industrial products. The method allows for a comprehensive quality evaluation at designing and controlling industrial product manufacture. The method is based on a set of mathematical and statistical models of forming a sampling frame of industrial product parameters. It takes into account the factors of the company’s external and internal environment, control over decision making process (DMP), quality evaluation by a sum of partial indicators of ten groups. The method developed is automated with the help of the software MathCad Prime. The industrial approbation of the method showed its efficiency for the solution of production tasks related to the evaluation and control of industrial product quality at various stages of product and manufacturing life cycles.
Implementation of a probabilistic subtractor based on a probabilistic adder
Authors: Moiseev D V 
Published: December 2020

Abstract
The paper provides basic mathematical calculations for performing arithmetic operations of addition and subtraction on operands represented as a non-positional probability mapping. The probabilistic form of presentation and transformation of information has undeniable advantages over the “classical” digital, which consist in reducing the hardware volume and increasing the performance of computing devices. A method for the implementation of probabilistic subtraction through probabilistic addition is proposed. A simulation was carried out, confirming the theoretical presentation.
The use of CAD when designing forest machines
Authors: Dolmatov S N , Kolesnikov P G 
Published: December 2020

Abstract
Wheeled forest skidders - pack pickers are widely used by logging enterprises. However, such vehicles have insufficient maneuverability. Therefore, development of tracked pack pickers is an urgent task of forest machine building. When designing such machines, it is required to ensure high reliability and durability of the structure for operating in hot and cold climates, poorly maintained roads or their absence. It is also necessary to fulfill the condition of sufficient strength and minimum weight of technological equipment and the machine as a whole. The use of computer-aided design (CAD) systems makes it possible to realize these conflicting requirements. In the process of research in Altair Inspire CAD system, a constructive element of the technological equipment of the tracked skidder is developed. The use of the finite element method makes it possible to ensure the strength of the structure. As a result of topological optimization of Altair Inspire, the design weight of the projected element is reduced by 45% compared to the weight of the prototype machine. Reducing the mass of the structure does not have a negative effect on the strength indicators. The required standard safety factors, operating stresses and deformations of the structure are provided.
Implementation of an enlarged block of design procedures for the analysis of requirements for the assembly of high-precision products
Authors: Nazaryev A , Bochkarev P 
Published: December 2020

Abstract
The article considers the issue of improving methodological, mathematical and algorithmic support for the implementation of an enlarged block of design procedures of the analysis of a high-precision assembly unit and the requirements of its assembly of the of the system of accounting requirements for the assembly in the design of manufacturing methods of machining. The proposed improvements will make it possible to more efficiently perform design dimensional analysis of a high-precision assembly unit in an automated mode and choose rational manufacturing methods of machining of parts during process design of the production of multi-nomenclature machine building complexes.
Reconstruction of thermo-physical properties to improve material database for casting simulation
Authors: Ogorodnikova O M , Yeltsin S V , Martynenko S V 
Published: December 2020

AbstractIn this work, an advanced method is proposed for computational recovery of thermo-physical properties in a wide range from room temperature to values above the alloy melting point. This method allows us to improve material databases of CAE (Computer-Aided Engineering) programs for simulation of high-temperature technological processes. In most cases, computation of unsteady temperature fields is an important stage of CAE analysis in mechanical engineering. Moreover, various manufacturing technologies such as casting, welding, surface hardening, coating, heat treatment provide the desired material structure and its strength by controlling temperature field during solidification and subsequent cooling of a machine part. The problem of reliability in computer modeling arises from the fact that CAE programs usually are not equipped with comprehensive material databases. We have solved this problem especially for casting simulation and molding materials, which can differ in composition at different plants and therefore cannot be combined into a common database. To determine unknown thermo-physical properties, the temperature had been measured in several points of solidifying cylindrical sample initially, and the appropriate computer simulation of the test technology was performed. Then the difference between the calculated and experimental temperatures was minimized using the modified Levenberg-Marquardt optimization algorithm.
A model for detecting vulnerabilities in UMV interfaces, based on probabilistic automata
Authors: Skatkov A V , Bryukhovetskiy A A , Moiseev D V 
Published: December 2020

Abstract
The main features associated with the development and research of methods of adaptive intelligent technology for monitoring the state of objects of computer systems are considered. The proposed approach is focused on detecting moments of change in the state of controlled UMV resources, which are: communication channel, processor, memory. The aim of this work is to develop an adaptive model using a Bayesian classifier for estimating the state of UMV resources. The model is based on a probabilistic automaton with parametric self-tuning.
System for dynamic synthesis of differential equations of mobile machines motion
Authors: Baranov A S , Pavlyuk A S 
Published: December 2020

Abstract
The process of creating the calculation model structure of mobile machines of arbitrary configuration is formalized. An algorithm for dynamic synthesis of motion equations according to the calculation model is created, which enables to automate the development of differential equations of motion without the participation of a researcher. The method of displaying simulation results using a database of graphic elements based on raster images is substantiated. Based on the object approach, all stages from the development of the flowchart to the obtaining of the final simulation result are combined into a complete algorithm.
Improving simulation adequacy of production processes by jointly applying the planned and situational reservation logic of jobs in the machine parts manufacturing batch
Authors: Grigoriev S N , Dolgov V A , Leonov A A 
Published: December 2020

Abstract
The logic of setting priorities for a workstation reservation is proposed. The workstation reservations need for machining operations of manufacturing a production parts batch. Examples of planned reservation of workstation at the manufacture of batch parts with different technological cycles are considered. It is shown that the comprehensive application in simulation modelling of situational logic and the logic of planned reservation of workplaces can significantly increase the appropriateness of the simulation production processes.