bluuebunny/crossref_metadata_2025_split huggingface dataset:
Evaluation of the mechanism of the destruction of metals based on approaches of artificial intelligence and fractal analysis
Authors: Kabaldin Yuri , Anosov Maksim , Shatagin Dmitrii 
Published: January 2020

Abstract
The article examines modern informational approaches to assess the degree of damageability of materials based on their fractographic images. The possibility of using the fractal dimension, wavelet transform and convolutional artificial neural networks for tiling and classifying the share of viscous and brittle destructions on fractures is shown. The results of experimental studies of the impact viscosity of materials with different types of crystal lattices in a wide range of temperatures are presented.
Experimental evaluation of traction and coupling properties of terrain vehicles
Authors: Klubnichkin E E , Klubnichkin V E , Ryakhovsky O A 
Published: January 2020

Abstract
The article demonstrates the results of the experimental evaluation of the traction and coupling properties of the wheeled utility terrain vehicles (UTV) during which parameters and indicators allowing for their use during designing of new generation UTVs are determined. This work demonstrates the results of the tests in determining maximum drawbar pull; determining maximum drawbar pull at snatch load of the Russian-made UTVs RM 650-2, Stels 800 Guepard and foreign-made UTVs Yamaha Grizzly, BRP Outlander Max XT, BRP Outlander 6x6, Polaris Sportsman 1000 equipped with wheels with grouser height of 15 to 40 mm.
Modeling and computation of stretch-forming technological process rational parameters
Authors: Bormotin K S , Aung Win 
Published: January 2020

Abstract
Mathematical models and numerical methods for solving optimal control problems in the shaping of monolithic panels by stretching on the punch have been developed. As criteria, residual displacements and damage in plasticity are considered. The algorithms implemented in MSC.Marc allow us to calculate the optimal parameters of the stretch forming press work.
Control of the properties of metal alloys obtained by aluminothermy
Authors: Komarov O N , Zhilin S G , Predein V V , Popov A V 
Published: January 2020

Abstract
The paperwork considers the possibility to control the properties of the obtained experimental alloys, and also to ensure the reduction of the interaction between the resulting reaction products and materials of refractory equipment by adding filler materials to iron-aluminum thermite. There have been revealed regularities of the metal yield and the content of impurity chemical elements in the alloy composition depending on the quantity of input fillers. The analysis of the structure has been done, and hardness of the test items has been determined. The obtained experimental alloys with addition of various quantity of filler materials, according to the current standards, in chemical composition correspond to the steel grades which have been determined.
Constructive ensuring the accuracy of processing of the spherical ends of the bearing rollers
Authors: Mikhailova L N 
Published: January 2020

Abstract
The article focuses on ensuring the accuracy of the ends of the rollers of tapered bearings when machining on sphere grinding machines. Reviewed of the design the spherical grinding machine tools, with the periphery of the wheel profiled by a given radius have been given. The use of a corrected radius for profiling a circle is proposed, for which the design of the device for the basing and moving the rollers has been developed. Experimental studies of the use of the device are held. The results showed that the proposed constructive solution ensures the accuracy of processing the sphere of the end face of the tapered bearing roller.
Dynamic research of elementary differential gear with elastic links
Authors: Slobodyanik T M , Balakhnina E E 
Published: January 2020

Abstract
Many research works are devoted for study of static and dynamic parameters of planetary gears of various designs. A number of dynamic problems can be solve accurately enough without taking into account the elasticity of loaded elements. In calculations of mining machines transmissions dynamic processes must be considered gear flexibility as is much more than flexibility of large diameter and small length shafts. In this article are considered possibilities and features of research of dynamic phenomena that take a place in planetary mechanisms of mining machine transmissions. For this purpose planetary mechanisms are presented as elastic mechanical systems. For research the dynamic model of elementary differential mechanism with taking into account the link elasticity is used. For this purpose the differential gear presented as equivalent planetary row with inertialess planetary carrier. Main links of such mechanism have inertia moments determined by known formulas. The equivalent dynamic model of elementary differential gear is presented as three-mass branched system. Moments of elasticity, occurring in mechanical constraints of system, are determined. Equations of movement for each of the masses give the linear homogeneous differential equation system or free oscillations equation system of mechanism. This system is representable as linear algebraic equation system. Particular solutions of inhomogeneous differential equation system are of practical interest, as they permit to make the analysis of the effect of external loads, acting on the mechanism. Operator solution method application will give particular solutions of linear inhomogeneous differential equations. Received systems will allow solving many dynamic tasks of elastic mechanical systems: character change and maximum values of mechanism links dynamic loads, periods and frequencies of oscillations, conditions of the resonant state of the mechanical system.
Planning methods of modernization of industrial enterprises using graph models
Authors: Lukina S V , Korshunova E D , Dobrolyubova Marina 
Published: January 2020

Abstract
This paper presents the methods of compiling programs aimed at modernizing industrial enterprises of various purposes. These methods help to form the entire sum of all permissible alternative options of modernization programs at initial stages for their subsequent evaluation and comparison. The basis of the method is a ten-graph model that defines a number of options for implementing individual structural components of the modernization program, such as the range of products manufactured, the technological process of manufacturing primary components, the main equipment, the cutting tools and accessories, organization of the manufacturing process, enterprise staff, suppliers of materials and components, financing plans for the modernization program, and the parameters of external macro environment of the enterprise in question. A mathematical model used to form a multitude of alternative options of modernization programs, employing algorithms of searching into the graph depth and width, has been developed. The developed method may be employed to form options for the modernization of industrial enterprises of various purposes. Industrial testing of the developed method has demonstrated its efficiency and flexibility in solving various problems linked to modernization of industrial enterprises.
Collision detection and avoidance method for two cooperative robot manipulators
Authors: Kabanov A A , Tokarev D A 
Published: January 2020

Abstract
The paper examines a collisions detection and avoidance problem for two cooperative robot manipulators. The proposed collision detection method is based on the division of workspace into small discrete volume spaces. Each of the discrete volumes have the status “occupied” or “free”. The control system generates restriction signals when the motion along the calculated path will bring the manipulator into occupied volume spaces. A step-by-step algorithm of the collision detection system is given.
Numerical study of non-linear deformation processes of reinforced concrete structures elements interacting with soils
Authors: Balafendieva I S , Notfullina A A , Galimullin I A 
Published: January 2020

Abstract
In the framework of an approach based on the mechanics of a transforming structure, a method is proposed for calculating the deformation processes of elastoplastic reinforced structures interacting with soils of complex physical nature. The technique is based on the use of the defining relations, connecting the increments of the true stresses and strains. As an illustration of the performance of the proposed methodology, some results of the calculation of the stress-strain state of the walls of a metro tunnel station at different stages of its construction are given.
Working equipment of the single-bucket excavator for the development of frozen ground
Authors: Letopolsky A B , Korchagin P A , Teterina I A 
Published: January 2020

Abstract
The article presents a variant of improving the design of the working equipment of a single-bucket excavator. The proposed technical solution allows the development and sampling of solid and frozen soil without changing the working equipment from the bucket to the hydraulic hammer. The result is achieved by installing two hydraulic hammers on the front part of the bucket. Presents calculations of the hydraulic system of the excavator and hydraulic hammers, allowing to confirm the performance of the proposed solution. The methodology of technological operations is determined taking into account the use of the proposed technical solution.
High-torque axial-plunger hydraulic motor with phase control of the shaft rotation speed
Authors: Nizhegorodov A I , Gavrilin A N , Moyzes B B 
Published: January 2020

Abstract
The article reviews the design and parameters of high-torque axial-plunger hydraulic motor with phase control of the shaft rotation speed. This hydraulic motor is distinguished by a two-row eighteen-cylinder block and a rotary distribution disk with two rows of sickle-shaped distribution windows for supplying and discharging the working fluid. The hydraulic motor differs by a tripled displacement and torque from a similar hydraulic machine, which classifies it a high-torque hydraulic engines. Its power volume increases 1.6 times, and power response more than four times. At the same time, the fluctuation of the shaft rotation speed is measured by the corresponding value of the fluctuation coefficient equal to 0.0154. The phase control provides the hydromotor with a control range of 150…200 and more, while hydraulic motors with variable working volume range maximum 5. Therefore, the new hydraulic machine has a high potential for operating in hydraulic drives of machines.
Integral estimation of the activity of the maintenance department of the mining company
Authors: Andreeva L I , Krasnikova T I 
Published: January 2020

Abstract
This paper demonstrates the results of study in relation to increasing the efficiency of the maintenance department of the mining company. We consider the systematic and complex approach to estimating the activities of the maintenance department, which is based on analyzing the efficiency of the arrangement for repairing and maintaining the mining machinery, evaluating the practicability of its operation according to the ratio ‘result/expenses’, studying the structure of the maintenance personnel and also evaluating the influence of operating modes and conditions on the productivity of machinery. This approach allows to find out the hidden reserves in the organizational, technical, technological and economic systems of the company. In addition, we demonstrate the results of evaluating the system ‘excavator-cut face’, which characterize the condition of an excavator and conditions (cut face, working area) of its operation, perform the analysis of the downtime of the equipment during the maintenance and when it breaks down. We consider the systematic approach to estimating the economic practicability of operating and repairing the mining machinery, which allows to make managerial decisions in relation to every unit of machinery. Also the recommendations for increasing the efficiency of the maintenance department of the company are given.
Ultrasonic tomography of pressure couplings
Authors: Ivannikov V P , Kabakova A V , Chaykina A Yu 
Published: January 2020

Abstract
The article tells of the method of pressure coupling fit area research with ultrasonic tomography, which was set up on the basis of the proprietary technology of quantitative estimation of press-fit joints quality with the ultrasonic echo-impulse method. The possibility of 3D - images receiving of the press-fit joint strain-stress state area is shown. On the basis of the study of the characteristics of ultrasound reflection from the pressure coupling fit area, it is shown that the ultrasonic signal reflection coefficient is the general characteristics of press-fit joint quality because it is bound with the normal stresses appearing on the joint surfaces. Considerable attention is paid by the authors to the possibility of optimization of the research process: the possibility of automation of joint quality control by the described method is realized.
Dualism for CAD-system creation based on natural- intellectual representation
Authors: Razumowsky A I , Loktev M A 
Published: January 2020

Abstract
When developing difficultly deterministic software solutions of automated systems, control over the algorithmization and structurization of the task should lie outside the control of the formal interconnection of operators and data. The design of software systems should be controlled from the external control area both over the algorithmization and structuring, and over the autonomous independent consideration of the element. The fact of the possibility of arbitrary coordination of the structural elements of the software system is called the dual representation. The integrative role between independent design elements is assigned to the natural – intellectual interface, which is able to provide a dualism of perception of the elements of the information space both as structurally related and as independent.
Improving the performance of the processing of deep holes by improving the structure of the boring tool
Authors: Khramov A , Semdyankin I , Kiselev E 
Published: January 2020

Abstract
The experimental and industrial testing of the developed design of a new boring mandrel for processing deep stepped bores in the body workpieces of gray cast iron has been performed. The boring mandrel is characterized by high rigidity and fast replacement of cutting plates. The use of the mandrel in the current production of the GAZ Group of enterprises allows three to four time increase in the productivity of boring holes in the large-scale production of cylinders.
Influence of capillary autohesion on structure and molding properties of ceramic granular molding compounds
Authors: Belov V V 
Published: January 2020

Abstract
The prerequisites of optimal designing of compositions of raw mixtures for the production of molded ceramic products, based on the laws of the formation of polydispersed structures, is presented in the paper. The choice of methods for calculating the optimal humidity of raw mixtures, providing the optimal parameters of their compacting is suggested. The influence of the humidity of the raw mixture on the packaging of its particles and bulk density, as well as the plastic strength of the molding, taking into account the action of capillary adhesion, is shown in the article.
Future developments of a roll forming mill design algorithm
Authors: Osadchiy V A , Albul S V , Kuprienko N S , Kirillova N L 
Published: January 2020

Abstract
The paper discusses the prospects of creating an algorithm for designing a roll forming mill. The algorithm scheme implies a parametric input of the initial data of technology requirements, a calculation of structural elements taking into account requirements of the customer and the output of the algorithm result in the form of design documentation for the rolling facility.
Development prospects of introduction of innovative technologies 3d-printing in Kazakhstan
Authors: Mukhamadeyeva Railya 
Published: January 2020

Abstract
The article describes material about the main prospects that require research for the implementation and operation of new additive technology in the Republic of Kazakhstan. The main problems of introducing new technologies are considered. New technologies, in the broad sense of their presence, or absence, determine the strategic position of the national economy in the world. The availability of technologies provides scientists or designers with powerful tools for the implementation of new ideas. The lack of technology limits the creativity of scientists and engineers, forcing them to apply outdated technical solutions that are in their possession, rather than those that enable them to achieve the new goals. Therefore, technology itself is a major part of innovation. The market situation is changing and only interested consumers remain. Market trends for the next decade are discussed. Furthermore, the article also discusses the advantages of introducing CAD systems into the educational process and software products of the COMPASS family.The Republic ofKazakhstan needs competent specialists who can apply the most modern technologies. As 3D printing technology advances and more people are exposed to it, they realize it can be applied to many different problems in many different fields; thus the opportunity for innovation is tremendous.
Raster electron microscopy of electroerosion titanium-tungsten-cobalt powders
Authors: Ageeva E V , Altukhov A Yu , Pikalov S V 
Published: January 2020

Abstract
One of the promising methods for producing nanopowders, from virtually any conductive material, including cemented carbide, is distinguished by relatively low energy costs, harmlessness and environmental cleanliness of the process, the absence of mechanical wear of equipment, obtaining powder directly from pieces of cemented carbide of various shapes in one operation, obtaining particles of predominantly spherical form is the method of electroerosive dispersion (EED). The purpose of this work was to study the shape and morphology of the surface of powder particles obtained by electroerosive dispersion of solid waste T30K4 in alcohol using a scanning electron microscope. On the basis of the conducted research, it was established that the shape of the powder particles obtained by EED dispersion of solid waste grade T30K4 in alcohol is determined by the form in which the material is ejected from the well in the EED process. It is noted that spherical particles are obtained by crystallization of molten material (liquid phase), and fragmentation-shaped particles are obtained at brittle fracture. It is established that particles with a regular spherical or elliptical shape prevail in the powder.
Stand for optimization of thermo-force processing of shafts
Authors: Bobrowskii Alexander , Drachev Oleg , Kravtsov Alexey 
Published: January 2020

Abstract
The article discusses the design of the stand for the diagnosis and determination of the optimal modes of thermo-force processing (TFP) of light-hard long shaft-type parts. The stand is equipped with an automatic control system (ACS) for heating, cooling and axial plastic deformation. ACS includes three control loops. The functional scheme of the stand and its operation algorithm are described.
Prospects for the Development of Ultra-Jet Dispersion Technology for Nanocontaining Suspensions
Authors: Htet Kyaw Myo , Galinovsky A L , Provatorov A S 
Published: January 2020

Abstract
The article deals with the actual problem of the dispersion of nano-modifiers. At present, the methods used for dispersing are not sufficiently effective and often do not provide the necessary dispersion of nanoparticles in suspensions. The solution to the problem can be found in the application of ultra-jet technology, which allows, as shown in the article, to provide a fairly high level of dispersion. The studies were carried out as part of a grant from the President of the Russian Federation for state support of leading scientific schools (NSh-3778.2018.8) and a grant from the Russian Foundation for Basic Research 18-29-18081.
Evaluation of energy consumption for the object motion optimal control
Authors: Bokhonsky A , Varminskaya N 
Published: January 2020

Abstract
The energy asymptotic reduction for the optimal control of the “acceleration-deceleration” type (with increasing of the degree of the polynomial that sets the type of optimal control) while realizing the motion purpose is revealed and investigated. For a fixed minimum possible motion time, the object is moved as an absolutely solid or deformable body from the initial state of quiescence to the final state of absolute quiescence. It is shown that the acceptable motion time of an elastic object is found from the moment ratios - the equality to zero of the relative displacement and the relative velocity at the end of the motion. Using the example of a system with one degree of freedom, it is shown that the moment relations are a system of transcendental equations with many mutual roots. The considered class of controls is applicable for the elastic objects optimal motion in modern technology.
An Investigation on Urban Circle Rail Transit: A Case Study on the Alignment of Mass Rapid Transit 3 (Circle Line)
Authors: Mohamed A A , Wei E J , Ramadhansyah P J , Farooqi M A , Satar M K I M , Mashros N 
Published: January 2020

Abstract
Mass Rapid Transit (MRT) is one of the important components of the Greater Kuala Lumpur (KL) development plan. It consists of three line-systems and would be finally operated by Klang valley public transport system. These three lines are aligned on the concept of wheel and spoke pattern that encompasses two north-south radial lines as well as a circular line (also known as ring line) circulating around KL and enclosing the central business district. However, fixing the locations of the stations has become an issue. The aim of the paper is to find out the optimal alignment for the ring line with respect to the total passenger benefit. A numerical-analytical model has been used to determine the optimum radius for the proposed ring line in a city. Passenger route choice for many-to-many, origin-destination (OD) pairs is analysed using radial-only rail network and rail network with ring lines of varying radii. The route choice takes into consideration three separate options including a) direct access to destination, b) taking only radial lines, and c) taking a combination of radial and ring lines. Several important parameters such as access cost, ride cost, and transfer penalty, are the main aspects to evaluate the optimality of the ring line. Microsoft Excel has been used to run the cost-benefit optimization model with the aim of obtaining an optimal radius of ring line. Results show that the net benefit of presenting a circle line in the KL by manipulating the passenger’s cost for each OD pair. Finally, the optimum alignment of MRT circle line in KL has been proposed.