bluuebunny/crossref_metadata_2025_split huggingface dataset:
Parameters of loading equilibration in a tube cold pilger mill drive
Authors: Buinachev S K , Chechulin Yu B , Bakin A V 
Published: January 2020

Abstract
On the basis of the variational approach and the Gauss-Seidel method there are proposed a technique and a mathematical model for determining the optimal parameters of dynamic load balancing systems on the crankshaft on the example of the cold rolling mill tube with reciprocating motion of an executive element in the form of a large mass working stand. The most compact scheme with the orthogonal motion of the executive element and the balancing load was chosen as the dynamic balance system. Variable parameters include dezaxial values, misalignment angle of cranks, weight of counterweight and balancing weight, lengths of connecting rods of executive and balancing mechanisms. For the existing series of sizes of cold rolling tube mill as the mass and speed of the rolling stand increase, the proportion of dynamic and technological components of the reduced load and respectively the kinematic scheme of the balancing mechanism changes. In this case, the structure of the loading and a set of variable parameters remain unchanged. Therefore, the proposed mathematical model of dynamic programming retains the universality of finding the minimum of maximum of the resulting load.
Numerical simulation of diamond powder separation by particle shape and size
Authors: Kurnenkov A V , Shurigin A Yu , Glebov V V 
Published: January 2020

Abstract
The paper presents the finite-element modeling results of classifying diamond microgrit grains, using a rotary type separator in software ANSYS Fluent. The authors obtained the following results: distribution of air flow velocities, grain motion trajectories in the liquid film and in the air when ejecting from liquid, depending on their size and shape for synthetic diamond powder grit size80/63.
Theoretical and experimental research on pressing process of porous bodies made of MR wire material
Authors: Lazutkin G V , Davydov D P , Shchemelev V I 
Published: January 2020

Abstract
The article represents the main principles of the theory of pressing process of products made of MR fiber material. It is showed that the equations of ideal (excluding external frictional force) pressing process of products made of MR material are represented as power function of pressing pressure depends on density of porous body. The power function of the hardening of the wire material in compact is determined. It is established that the ideal pressing process contains two stages in the range of relative densities of porous bodies [0.15; 0.7]. The main equation of pressing process of products made of MR is obtained. Experimental proof of hypotheses and assumptions confirmed their validity.
Parametric optimization of the thermal processing of foam glass on basis of heat transfer models
Authors: Fedosov S V , Bakanov M O , Nikishov S N 
Published: January 2020

Abstract
The foam glass is one of the most prospective materials in the market of vitro-crystalline building materials. To achieve optimal physical and technical parameters of foam glass, the development of technology that will regulate the processes of heat treatment of the raw material mixture to produce foam glass without reducing its performance is required. Foaming process is an important parameter in the foam glass technology. The temperature of the raw material mixture changes from the surface layers to the center of the backfill during foaming, the activation reaction of the gasifier thermal decomposition proceeds similarly, which can result in the material uneven air-entraining. Mathematical model presented in this paper makes modeling the distribution of temperature fields at the contact boundaries of the metal mold for foaming and the raw material mixture for the foam glass production as well as prediction of the further temperature changes in the raw material mixture, which is the key factor in the formation of a uniformly porous final product, possible.
A method of determination of average plane of taps of pipes by triangulation method using an anthropomorphic robot
Authors: Lubimyi Nickolay , Chetverikov Boris , Chepchurov Mihail , Odobesko Ivan 
Published: January 2020

Abstract
Nowadays there are various manufacture methods of pipe taps. One of the most laborious operations during manufacture is a marking of pipe taps for subsequent machining. Work layout operations are performed using special tool ware and outfit. These operations are performed manually and it leads to the decrease in accuracy and to the increase of laboriousness. The authors suggest the method of determination of the latent base of pipe tap (average plane) using an anthropomorphic robot. The results of research would help to make the virtual calculation of tool position of the anthropomorphic robot for marking and to generate the robot trajectory. Ultimately, such research would also decrease laboriousness and increase accuracy of marking operation. Materials and methods. The authors supposed to use latent base, namely the average plane of the pipe tap as a measuring base. The robot is calibrated from the base plane placement and chooses the shortest circular arc by comparative approach. Therefore, such shortest arc would form the average plane. The authors carry out the determination of the curve line length by the triangulation method using the interferometer. Results. The result of the research is the technology development for determination of latent base in the average plane form. Discussion and conclusion. The proposed method of latent bases determination of pipe tap would allow making the automated system of marking of pipe taps. Moreover, such method would help to reduce time of performing operations as well as to decrease the manufacture laboriousness on the following stage of technological process.
Fine-grained limestone concrete with improved dissipative properties
Authors: Belov V V , Kuliaev P V , Artemiev A A 
Published: January 2020

Abstract
Crack propagation in concrete is known to be partially stipulated by the process of energy dissipation. In this study the usage of complex admixture including limestone fines and superplasticizer which enhance crack propagation energy dissipation rate is discussed. Energy dissipation rate and crack propagation are assessed by comparing cracking strains and stress intensity ratios for two sets of specimens, with and without limestone fines. Limestone semi-inert filler acting in a synergetic way with superplasticizer is revealed to enhance crack propagation energy dissipation rate and cracking strains, which makes fine-grained limestone concrete the effective crack-resisting material.
Polyurethane composite mortar for expansion joints on road bridge structures
Authors: Izmaylov I A , Rozovskaya T A , Dolinnaya E N 
Published: January 2020

Abstract
The article analyzes the main reasons for the low durability of road pavement in the zone of expansion joints. The main prerequisites for the use of polymer-based compounds for filling the transition zone between the asphalt concrete pavement and the metal profile of the expansion joint are considered. The results of the study of physical, mechanical, and operational properties of the polyurethane-based compound are given, and the increased durability of the proposed solution is justified compared to traditional solutions. A feasibility study of the above solution has been completed. A technical solution for the design of an expansion joint transition zone is proposed.
Mathematical model of surface roughness at a flat grinding by periphery of a circle of metal-polymer parts
Authors: Lubimyi Nickolay , Odobesko Ivan 
Published: January 2020

Abstract
This scientific work focused on determination grinding modes for metal polymer products that are filled aluminium. Also it is necessary to ensure required surface roughness and the highest performance. We used three factor planned experiment to get equation surface roughness metal polymer product at a flat grinding. The analysis and processing the results of the experiment was performed using statistical methods. Preparation of the products for experiments based on previously obtained scientific data. We used only calibrated measuring instrument for taking readings. In this scientific work was obtained the equation of surface roughness and table feed and cut depth at flat grinding of metal polymer products. Also it’s been got values of grinding modes of metal polymer surfaces on the joint of the molding tool, according to required surface quality. An obtained curve was built.Comparisons with common relationships are made. The scope of the results has been determined. The values of grinding modes for processing metal polymer surface on the joint of the molding tool based on surface roughness also given in the scientific work.
Automation of the process of determining the errors of the installation of blanks for CNC machines in unmanned industries
Authors: Kozak Nikolay , Stas Anna , Obukhov Alexander 
Published: January 2020

Abstract
In article an analysis of the errors, which are determining by the cycle of position’s monitoring of workpiece, was done. The usage of this cycles and details was described. Proposed the technique of using the cycle and adding new user elements. Illustrated the application of the cycle in the NC program when installing workpiece on the table of a machine tool.
Real-time cutting simulation based on voxel model
Authors: Obukhov A I , Evstafieva S V , Martinova L I 
Published: January 2020

Abstract
The article discusses the approach to the implementation of cutting simulation in the CNC system. Simulation of cutting before starting the actual machining of the product allows you to avoid many errors associated with the positioning, reorientation of the tool, check the correctness of the tool’s approach to the workpiece, etc. This becomes especially relevant in multi-axis machining [1-4]. The advantages of presenting a product model using a sparse voxel octree are considered.
Development of a platform for collecting information on the operation of technological equipment with the use of Industrial Internet of Things
Authors: Martinov G M , Kovalev I A , Chervonnova N Yu 
Published: January 2020

Abstract
The article discusses the approach to collecting and aggregating data from sensors located on heterogeneous technological equipment using the principles of the industrial Internet of things. The main analytical data processing platforms are considered, the advantages of using ready-made and own solutions are shown. A practical example of the collection of parameters from a planer-milling machine with their subsequent analytical processing, which revealed the need for unscheduled technological maintenance of the spindle assembly, is presented.
Development of standardized tools for shopfloor programming of turning and turn-milling machines
Authors: Martinova Liliya I , Pushkov Roman L , Fokin Nikolay N 
Published: January 2020

Abstract
The problems of using CAM-applications for shop floor programming are studited. The reasons of problems of transfer of the created control programs from one CNC systems to another are revealed. A solution for unifying the format of recording of machine cycles is proposed and its applying for different CNC systems is demonstrated..
Non-Cylindricity of Holes Formed with Robotic Complex
Authors: Dudarev Aleksandr , Svirshchev Valentin , Makarov Vladimir , Podvintsev Aleksandr 
Published: January 2020

Abstract
The article describes the technological features of the formation of holes with the help of the created robotic technological complex based on a Kuka robot. The robotic complex for machining allows you to drill holes in the Helmholtz resonators to absorb noise in shells made of polymer composite materials (GFRP and CFRP) of aircraft engines. Holes for noise absorption with a diameter of 1.6–2 mm are required to be shaped in a significant array; 200-300 thousand holes must be drilled on one shell. The technological problems arising from the robotic drilling process are noted. One of the problems is the deviation from the cylindricity of the formed holes, the deviation arises due to the kinematics of the robot. A technical solution to this problem is proposed.
Automatically search of a rational cutting mode for milling non-rigid blanks with the specified quality parameters
Authors: Nazarov M V , Savelev K S , Kiselev E S 
Published: January 2020

Abstract
The work is devoted to the question of lowering the cost of production engineering products by reducing the costs of technological training. The possibility of cutting mode selection based on the quality of the processed parts using the proposed methodology for determining the roughness, elastic deformation of the item in the process of mechanical machining non-rigid parts of machines and technological level of residual stresses. The algorithm search automation rational cutting mode a brute-force attack all possible combinations of milling with calculation mode settings for each of the required quality parameters. Shows his work in appointing cutting mode for accommodative wall milling on aluminum alloy billet D16T.
Numerical investigation of cracked rotor
Authors: Abed Salam Ahmed , Bahrami Mohammad Reza , Thijel Jassim Farij 
Published: January 2020

Abstract
The aim of this paper is investigating the cracked Jeffcott with an offset disk rotor system. The finite element method (FEM) used in ANSYS gives an attractive approach for modeling the rotor dynamic system. The effect of changing speeds has been analyzed on the dynamic parameters of journal bearings (stiffness and damping) and then on Sommerfeld number. The relation of the dynamic bending stress with the static stress of rotor with cracks (dynamic load factor (DLF)) and with the ratio of depth crack to radius rotor has been established. The results have been obtained numerically by using ANSYS. The results show when crack’s depths increase the DLF increases and reach to maximum when a/R = 0.8.
Study of the process of tool forming made of high-strength materials
Authors: Lobanov Dmitry , Yanyushkin Alexander , Muliukhin Nikolay , Skeeba Vadim 
Published: January 2020

Abstract
The work covers the problems of forming tools cutting elements equipped with high-strength tool materials as exemplified by hard alloy tools for machining of non-metallic composite materials. The reasons for the formation of various defects, such as chips, cracks, breaks, burns, unwanted interphase structural transformations in the surface layers and the formation of high residual stresses in the wedge in areas where the grinding wheel contacted with the element being sharpened are indicated. The need for a comprehensive assessment of the quality of cutting blade shaping is noted. The need of technological system modeling of an abrasive tool - machined high-strength material is substantiated, since conducting of a comparative analysis of forming cutting elements methods from high-strength materials empirically is a rather long, laborious and economically inefficient process. At the same time, a detailed study of the regularities of stress-strain state formation in the elements of the cutting tool from difficult-to-work tool materials during grinding is required. The initial data are determined and restrictions are imposed on the system under study. The accepted assumptions do not limit the processes study, but allow us to estimate the contact processes occurring in the cutting zone. A method for the tool forming modeling process equipped with high-strength, difficult-to-work materials is given. The constructed model will allow: 1) to determine the rational ranges of technological machining modes, which will ensure the formation of a high-quality cutting edge during the sharpening process; 2) to carry out a comparative analysis of the methods of grinding tools equipped with cutting elements of high-strength materials, with the aim to choose the most favorable method for sharpening at the preliminary stages of technological preparation of tool-making facilities; 3) reduce the amount of empirical research, which in its turn will reduce the time spent on research, material consumption and improve the economic efficiency of research, due to reduced number of the experiments series.
Ways to implement hybrid finishing technology with a hand-held rotary tool
Authors: Lobanov Dmitry , Borisov Mikhail , Yanyushkin Alexander , Skeeba Vadim 
Published: January 2020

Abstract
In some segments of mechanic engineering: instrument-making, shipbuilding, automotive, aviation, aerospace industry there is a need for finishing processing of difficult to access surfaces of complex configuration. If it is not possible to process such surfaces on the equipment, then a manual rotary tool is applied. Such tools, in particular, include drills and engravers equipped with a grinding and polishing tool. If, using a manual rotary tool, the electrochemical grinding and electrochemical polishing are consistently applied, then it is possible to synthesize a hybrid technology for the electrochemical processing of complex profile metal products combining the advantages of each type of processing. The presented work is devoted to the development and study of ways to implement hybrid technology for finishing with manual rotary tools. The work provides a schematic diagram of the device and description of its operation. Analysis of the research results allows us to conclude that the hybrid technology allows to achieve a surface roughness of an average of Ra 0.25 μm and be successfully implemented when processing difficult to access surfaces of items of complex configuration with a manual rotary tool.
Automated Smart Quality Control of Commercially Manufactured Peltier Elements
Authors: Yudin Igor A , Tokarev Anton N , Bozhko Yuri V 
Published: January 2020

Abstract
In contemporary technological development there is a tendency to miniaturize and improve the efficiency of modern devices and information measuring systems, this trend affects not only aspects of electronic instrumentation, mechanical systems, mechatronics systems and microelectromechanics, but also systems for transfer and transformation of heat energy, accumulation and redistribution of heat fluxes, and miniaturization of cooling systems and improving the design of heat pumps. One of the contemporary ways of development of structure of heat transfer systems and transformation of thermal energy are elements based on the Peltier effect. We present the automated smart quality control system of commercially manufactured Peltier elements designed at the Department of Engineering Science and Technology of National Research Nuclear University MEPhI. The technical characteristics of our system and its functionality guarantee control and measurement of parameters of commercially available Peltier elements, production and interoperability control in the production of the elements as an electronic component base; production of precision equipment that requires the application of systems to maintain accurate temperature conditions, such as thermal imagers, laser projectors, mobile computing systems.
Study of the influence of technological, structural and operational parameters on the efficiency of the water-ice jet cleaning process
Authors: Prezhbilov Alexander , Burnashov Mikhail , Stepanov Yuriy 
Published: January 2020

Abstract
Nowadays, waterjet technologies find their use in various fields of manufacturing. Many areas of application of these technologies are well studied, documented and implemented. However, there are still applications of using a high-pressure water-ice jet that have not been studied yet. One of these applications would be the water-ice jet cleaning of the surfaces of machine parts with jets utilizing prepared in advance ice particles.
Heat transfer of flooded impact jets
Authors: Fedorovskiy Konstantin , Fedorovskaya Nadezhda , Burkov Dmitriy 
Published: January 2020

Abstract
This paper presents the results of experimental studies on providing heat to the inner surface of the shell plating of the ship through the use of impact jets. In this work, we carried out (by taking into account the existing design features) a modeling and a study of the flow and heat transfer of flooded jets that flow over a flat surface and then spread radially. The visual study revealed different patterns of radial flow of the wall jet. Critical Reynolds criteria and relevant summarizing similarity equations describing heat transfer are determined.
Spectral characteristics of noise during hardening of welds of rod structures
Authors: Beskopylny Alexey , Meskhi Besik , Chukarin Alexander , Isaev Alexandr 
Published: January 2020

Abstract
The article deals with the task of forming a noise spectrum during the processing of parts by the method of surface plastic deformation using a ball-core hardener. Processing using this method is used to harden both flat and curved surfaces, create compressive residual stresses, smooth out cavities, apply a regular microrelief on friction pairs, and also to process welds. The treatment process is accompanied by a loud noise, which mainly exceeds the standard values in the working area of the operator. The results of experimental studies of the spectra of noise and vibration to ensure acoustic safety are presented. The evaluation of the formation of the sound field in the working area of the sources considered. In the course of experimental studies, hazardous and harmful production factors arising from the implementation of machining welded structures were identified. The results of measuring sound pressure levels at the operator’s workplace during compressor operation and the processing of welds of channels and angles are presented. The obtained data are compared with theoretical conclusions about the laws governing the formation of noise spectra and the contribution of noise sources to the sound field at the operator’s workplace.
Improving the accuracy and quality of machining by controlling the cutting process
Authors: Bobrowskii Alexander , Drachev Oleg , Kravtsov Alexey 
Published: January 2020

Abstract
The development relates to machine tool construction, in particular, to the technological processes of chip removal with automatic control of technical process parameters. The installation allows you to automatically manage the process of turning. New in the process of turning is that the position of the cutter in the ZOY plane is changed directly in the cutting process, which reduces cutting forces. Registration of which is carried out by an indirect method based on the analysis of vibroacoustic emission, and is corrected by information about the torque on the main drive of the machine. The installation is a tool rotation mechanism, in which the worm-worm sector, is equipped with a controlled drive and a feedback control circuit on the position of the worm.
Structural optimization of a light aircraft composite wing
Authors: Aung Phyo Wai , Tatarnikov Oleg , Aung Naing Lin 
Published: January 2020

Abstract
This paper presents the results of structural optimization of a two-spar composite wing for a light aircraft. Different lay-up structures of power components such as spars, ribs and skin panels was considered. The problem of optimization was solved using Pareto optimization method with two criteria: minimal wing weight and minimal wing deflection under aerodynamic load. The angle of ply orientation and power components thicknesses were considered as the optimization parameters. It was shown that the use of the optimized wing from carbon composite could reduce up to 60% of the wing weight comparing with aluminium one. The stress-strain and buckling analysis of the wing and its power components were carried out in FEMAP software package.