bluuebunny/crossref_metadata_2025_split huggingface dataset:
Development of measurement quantity determination procedure for estimation of uncertainty of influence of conditions during calibration of thermal engineering measurement instruments
Authors: Malay L D , Ivanov R N , Dyachenko A YU , Popov A A , Stepanova E P 
Published: May 2020

Abstract
Calculation of uncertainty and identification of influencing factors is one of the current problems of measuring instruments (MI) operation, because testing programs of MI including only typical influence and don’t take into account specific measuring instruments. Calibration of measuring instruments during their operation and calculation of uncertainty of measurement results will allow to establish in the long term the actual values of measurement results traced to the national primary standard. One of the tasks in assessing the uncertainty of measurements is to assess the impact of calibration conditions, which is evaluated based on parallel measurements at each calibration point. The aim of the study is to develop a method for determining the number of parallel measurements when calibrating thermal measuring instruments on the basis of statistical information based on the results of verification of measuring instruments. In that research, was determined and experimentally tested method for determining the number of parallel measurements during calibration of thermal measuring instruments. The method was tested on the calculator of a quantity of heat VKT-7. Was identify strengths and weaknesses parts of the technique, as well as its field of application, have been revealed.
Diagnostics of paper – dampening solution printing system parameters for open source software applications
Authors: Orlova E Yu , Varepo L G , Hodes A 
Published: May 2020

Abstract
The paper parameters were selected for a computer model using open source software to predict their interaction with the dampening solution in an offset printing machine and in an ultrasonic measuring device. The indices characterizing the penetration of alcohol-free and alcohol dampening solutions with 5% and 10% content of isopropyl alcohol into the structure of offset coated papers on PDA c02 ultrasonic measuring device were obtained and analyzed. The surface profiles of coated offset papers are obtained on a Micro Measure 3D Station three-dimensional non-contact profilometer for constructing the surface geometry of papers in a graphical interface. A
tstartswelling

value was found characterizing the time of the beginning of fiber swelling in the paper structure, which will allow setting the time for calculating the numerical model. The obtained t95 and USI 70 indices are recommended for an indirect assessment of the identity of a computer model to the actual conditions for the onset of interaction and penetration of dampening solutions into the paper pores.
Integrated approach methodology for evaluating the feed rate of mechanical disk hopper-feeding devices
Authors: Pantyukhina E V 
Published: May 2020

Abstract
The paper considers the methodology of the proposed integrated approach to mathematical modeling of the actual feed rate of various designs of mechanical disk pocket hopper-feeding devices. The approach allows us to estimate the actual feed rate of the device for various types of axisymmetric parts of the shape of rotation bodies with sufficient accuracy for practice at the design stage. The mathematical model of feed rate takes into account the probability of gripping axisymmetric parts of the shape of rotation bodies with different geometric parameters, as well as the design and kinematic parameters of feeding devices.
Algorithm synthesis for tertiary information processing of distance measuring channel in information and measurement system of air traffic control
Authors: Pudovkin A P , Panasyuk Yu N , Varepo L G , Sustin A I , Danilov S N , Trapeznikova O V 
Published: May 2020

Abstract
The issue of improving the efficiency of the information and measurement system of automated air traffic control systems on the example of the distance measuring channel algorithm synthesis for following up the aircraft is considered. The choice of state and observation models is justified, computer simulation is performed, and the results of the studied algorithm are obtained.
The automating of the quantitative analysis and characterization of the polymer based films surfaces SEM-images
Authors: Rytikov G O , Doronin F A , Nagornova I V , Varepo L G , Rudyak Yu V , Nazarov V G 
Published: May 2020

Abstract
It is represented a possible way to standardize and to automate the quantitative description and the analysis of the formed by the scanning electron microscope polymer based films surfaces’ images. Also there are the calculating algorithms for the topographic model forming and the degrees of planar and contour digital heterogeneities calculating and the analysis process model with the computer application interface and the corresponded results of the sulfonated and fluorinated low-density polyethylene films SEM-images’ characterization. Due to the universality of the proposed techniques for quantitative image description and simulating they can be used in quality control systems under the design and manufacture of the surface-modified polymer films.
Technical diagnostics of gear hobbing technological system on diagnostic signs of deviations of tooth profile of gears
Authors: Safarov D T , Kondrashov A G 
Published: May 2020

Abstract
The article reveals the main provisions of technical diagnostics of gear hobbing machine system with CNC on the diagnostic parameters of the profile of the sides of the teeth. The scheme of embedding diagnostic processes in the cycle of improving the quality of manufacture of gears. The developed scheme is universal and applicable to any gear processing operations. It consists of several successive steps – the evaluation of indicators relative to the limit values, the identification of the technological structure of the profile errors and the identification and analysis of diagnostic deviations of the profile of the lateral surface of the teeth, indicating. Each step of the improvement cycle is necessary to determine the negative factors of the process leading to a deterioration in the quality of manufacture of gears. Application of technical diagnostics profile diagnostic indicators allows to detect deviations of the technical condition of machine components, adjustment or tuning machinery. Diagnostic indicators are identified for the most significant technological components of non-conforming errors of the profile of the sides of the teeth of the gear wheel. The advantage of this quality improvement scheme is that it is more efficient than traditional methods of statistical quality management.
Intelligent information-measuring system for operational control of thermo-physical properties of heat insulating materials
Authors: Selivanova Z M , Kurenkov D S , Trapeznikova O V , Nagornova I V 
Published: May 2020

Abstract
The quality of materials is evaluated by non-destructive testing of their thermo-physical properties in the manufacturing process. A relevant aspect in determining the quality of products at the manufacturers is the development and application of an intelligent information and measurement system for operational control in the quality properties of heat insulating materials. The objective of the study is to improve the efficiency and accuracy of determining the thermo-physical properties of the test materials by solving the problem of reconfiguring the system structure in accordance with the specified algorithm of operation, making decisions on the choice of a method for non-destructive testing of thermo-physical properties of materials, and an approach to building the structure of an intelligent measuring system. The solution for the problem of system architecture configuration with artificial intelligence methods according to information and measurement situations in the operation of the system is proposed. Intelligent decision-making procedures are presented when choosing a method for controlling the thermo-physical properties of materials as a result of identifying the measuring situation. An approach to the construction of the intellectual information-measuring system structure for operational control of material quality properties based on the selection of system structure and control method for thermo-physical properties of materials adaptive to the class of test materials by thermal conductivity to improve the efficiency and accuracy of thermal measurements is created. The results of experiments to determine the thermo-physical properties of heat insulating materials using an intelligent information and measurement system are presented. The analysis of the obtained results confirms the control accuracy increase in the thermal properties of materials.
Acousto-optic method of electronic laser phase control for laser interferometry
Authors: Teleshevsky V I , Bushuev S V , Grishin S G 
Published: May 2020

Abstract
The paper describes a method of electronic control of laser phase for laser interferometry. The method utilizes acousto-optic interaction and ultrasonic wave diffraction. The article presents an opto-electronical scheme for phase shift control with high resolution in reference and object beam without using high voltage.
Generation of the surfaces via quasi-rotation of higher order
Authors: Beglov I A 
Published: May 2020

Abstract
In this study we report a change in the geometry of space during its quasi-rotation relative to an ellipse. Symmetric interrelation, generated by the quasi-rotation around the elliptic axis is considered. The possibility of an arbitrary point quasi-rotation in the R
3 space around the elliptic axis is confirmed and discussed. Further, we analyze the properties of quasi-rotation surfaces. In the considered examples, a circle within the quasi-rotation axis’s plane is adopted as a generatrix. The algorithm used to build 3D graphs is based on a mathematical description of the method of rotation of a point around a second-order axis curve. A symmetry interrelation with respect to the elliptic axis is considered. The generated images are analyzed to determine the structure of their self-intersection and self-touching. Flat intersections of the surfaces under study are generated. Geometric methods were used to determine the order of the surfaces. It was established that in the considered example that quasi-rotation of the circle that belongs to the quasi-rotational elliptic axis’ plane, a surface of the twentieth order is formed.
N-n-digit interrelations between the sets within the R
2 plane generated by quasi-rotation of R
3 space
Authors: Beglov I A 
Published: May 2020

Abstract
The background of description of the method for geometric objects rotation around the curved axes in the form of curves of the second order is being considered. The above-described method got the name of “quasi-rotation”. The algorithm of geometric construction of the two-two-digit interrelation on the basis of the circular axis of symmetry is provided. The described interrelation is analogous to the mirror symmetry regarding a straight linear axis. The method is suitable for construction of some well-known algebraic curves. The analogies between rotation and quasi-rotation are determined and described. The formula of the same plane preimage-to-image interrelation, generated by the quasi-rotation around the curved axis of the second-order curve is provided. The presented formula allows to derive the equations that effectively describe images of the given sets. The method for geometric construction of the images of geometrical objects lying within the plane of the second-order curve at their quasi-rotation for a given angle regarding the curve is described. The obtained results describe geometrical basics for the quasi-rotation. They serve as the basis for shape-forming of algebraic surfaces of high orders, and can be utilized as the theoretical basis for the computer-aided automated geometric projection.
Application of mixed geometric interpolants for modeling the strength characteristics of steel fiber concrete
Authors: Konopatskiy E V , Bezditnyi A A 
Published: May 2020

Abstract
The paper proposes an approach to modeling geometric multifactorial processes and phenomena using mixed geometrical interpolants, for example of the steel fiber concrete strength characteristics’ simulation A key role is played by the formation of the geometric model, as developed in detail in the article. Analytical description of the geometric model obtained by means of algebraic curves (that pass through the predetermined point in advance) is realized by means of the BN-calculus mathematical formalism.
Determination of catacaustics through cyclographic mapping
Authors: Lyubchinov E V 
Published: May 2020

Abstract
The paper presents a general algorithm of determination of catacaustics given a curvilinear source and a reflector. The algorithm is based on the method of cyclographic mapping as well as the optical property of a cyclographic projection of a spatial curve. The algorithm is consistent and universal; it is suitable for every problem where the light source is given in the form of a central, parallel or diffuse bundle of rays. Through the presented algorithm the analytic solution to the problem of determination of catacaustics is acquired. The results of the study can be utilized in applied geometric optics in design of optical systems consisting of the triad of elements: a light source, a reflector and a receiver.
Forming of contour-parallel lines family with the detection of their non-working sections
Authors: Myasoedova T M , Panchuk K L 
Published: May 2020

Abstract
The paper considers family of working contour-parallel lines formation used in the design of the toolpath that processes pocket surfaces. Contour-parallel working lines are the ones from which the lines-noises, i.e. non-working sections, are removed. Non-working sections include self-intersection loops and intersections of oncoming fronts in the case of multiply-connected domains. The spatial geometric model of forming contour-parallel lines is based on the cyclographic mapping. As a tool for detecting non-working sections for the case of oncoming fronts, the method of a testing ray is proposed. In case of self-intersections of contour-parallel lines, non-working sections are cut off by the parameter of these lines at the points of self-intersection. At the output of the proposed shaping algorithm of the working contour-parallel lines family, the parametric equations of these lines are formed. The algorithm successfully works for multiply-connected domains with polygonal and curved contours of the boundaries of the domain and islands in it. A comparative evaluation of the proposed method of forming a contour-parallel lines family with trimming non-working sections and the known methods that use the distance function is performed.
Geometric modeling of sheet transfer process from grippers to grippers
Authors: Serkova L B , Varepo L G , Panichkin A V , Kolozova O A , Glukhov V I , Belyaev P S 
Published: May 2020

Abstract
One of the important processes in operation of a printing machine is the transfer of a sheet of printed material from one cylinder to another. The transfer of the sheet is carried out using special grippers attached to the printing cylinder, and quality of printing depends on their accuracy. At the stage of printing process preparation, an important step in setting up the equipment is the correct installation of the grippers. The paper presents the results of developing a geometric model of the sheet transfer process from grippers to grippers. This process is visualized using a computer simulation. The presented model makes it possible to define the trajectory of the paper movement in the transfer zone, and track the untimely opening or closing of grippers. This may lead to printing process abnormality.
Automatized determination of types and characteristics of the optical fibers state located in the laid cables
Authors: Bogachkov I V 
Published: May 2020

Abstract
The classification of the optical fiber types and influencing factors by using the Brillouin reflectograms are considered. The programs for automated data processing of Brillouin reflectograms are presented. The types of the optical fibers are determined by the characteristics of the frequency profile of the Mandelstam – Brillouin scattering spectrum. Based on the analysis of Brillouin multi-reflectograms, we can detect the factors that effect on the characteristics of the back-reflected Mandelstam – Brillouin scattering signal in the tested segments of the optical fibers.
The polarization effect in electro-magneto-elastic semi-bounded heterostructures
Authors: Levi M O 
Published: May 2020

Abstract
In this paper, we consider the effect of the polarization effect of electro-elastic and magneto-elastic parts of an electro-magneto-elastic heterostructure on its dynamic characteristics. As the studied heterostructure, a packet of layers lying on half-space was selected. It is assumed that the layers are mechanically rigidly adhered to each other. The electrical and magnetic conditions at the layer boundary can be either completely open or completely shorted. Given the variable boundary conditions, the Green’s function of the heterostructure was constructed and the phase velocities were obtained. The electromechanical coupling coefficient in the heterostructure is obtained for various geometric proportions of its constituent layers.
Volumetric Flow Observer For A Pumping Unit Without Backpressure With Induction Electric Drive
Authors: Lysenko O A , Simakov A V 
Published: May 2020

Abstract
The article describes the construction of a volumetric fluid supply observer in pumping systems. The electric drive of the pump unit uses an induction motor with a squirrel-cage rotor. The rotation speed of the electric motor is adjustable. A centrifugal pump is used to pressurize a pipeline. Requirements for the automation level of pumping units are growing, so the research topic is relevant. When constructing the observer, the double squirrel cage induction motor model in a fixed coordinate system is used. The impeller rotation speed and the pump resistance moment were estimated based on the Luenberger observer. The observer is used to identify the volume flow. It is based on a centrifugal pump model using approximating coefficients of a Second-Degree Polynomial function. The article provides the dynamic characteristics of the reference model and observer. As a studies result, an error in the steady state operating mode of 1% was determined.
Wear resistance of steel obtained by surfacing a flux-cored wire 30N8Kh6M3STYu
Authors: Eremin E N , Losev A S , Ponomarev I A , Borodikhin S A , Volochayev M N 
Published: May 2020

Abstract
The wear resistance of steel 30N8Kh6M3STYu as a result of surfacing by flux-cored wire was investigated. It was found that the average value of the relative mass wear of such a metal is 0.0002818 g/m, and the average value of the linear wear is 0.0006194 mm/m. The average value of the coefficient of friction after running in increased from 0.192 to 0.211, and the average value for the test was 0.207. The microhardness of the matrix of such a metal as a result of aging is in the range of 639–683 HV, the microhardness of the eutectic is 650–786 HV and the hardening phase is in the range of 783–882 HV. It has been shown that the steel hardening mechanism of such a system is determined by the compounds of carbides, for the most part, TiMo0.707C0.5, Cr3C2, and a small amount of TiC, SiC, intermetallic compounds, mostly Cr0.92Mo3.08, Fe0.875Mo0.125, Fe2Ti, and a small amount of Mo0984Ni0.016, Ti3Al, Ni3Ti, and Fe24N10 nitride formed as a result of aging. The established complex of dispersed phases precipitated after aging determines the wear resistance of such steel. The flux-cored wire created on the basis of 30N8Kh6M3STYu steel can be used for surfacing parts working under friction of metal on metal.
Complex study of structural state and properties of ion-plasma functional coatings
Authors: Orlov P V , Korotaev D N , Povoroznyuk S N , Poleschenko K N 
Published: May 2020

Abstract
Based on the justified methodological complex the study of the multilevel structural state of coatings and surface layers created by the ion-plasma modification was made. A comparative quantitative assessment of structural changes and the chemical composition of coatings by SEM, XPS, EDX methods and the physical and mechanical properties of coatings based on titanium nitride was carried out. It was found that for all variants of coating formation there is no titanium in the metallic state and, therefore, the formation of a droplet phase does not occur. Layer-by-layer XPS analysis has determined that coatings are heterogeneous in its composition in depth. It is shown that the modification of steel surfaces with a TiN-based composition can be used to form wear-resistant coatings on the working bodies of road milling machines that are actively used in the overhaul and maintenance of the highways.
Influence of low temperature on structure and impact strength of structural steels welded joints
Authors: Saraev Yu N , Golikov N I , Maksimova E M , Sidorov M M 
Published: May 2020

Abstract
The article is devoted to the study of the relationship between climatic conditions of construction, installation and repair during the operation of industrial technical systems and the structure and properties of welded joints of structural steels. It has been established that the main technological factor affecting the crystallization of the weld metal from the melt is the heat input transmitted by the heating source - an electric arc, during welding at all intervals of the formation of one-piece joints. The research results made it possible to justify the conditions under which the formation of one-piece compounds occurs. The frequency ranges of controlled heat input, that maintain a specified set of welded joints mechanical properties are determined.
Review of electric thrusters with low consumption power for corrective propulsion system of small space vehicles
Authors: Vavilov I S , Fedynin V V , Yachmenev P S , Zharikov K I , Lukyanchik A I , Stepen P V 
Published: May 2020

Abstract
This paper presents an overview of current world developments in the field of low-energy plasma propulsion systems for small micro - and nanoclass spacecraft. A promising direction of thrusters for devices of nanoclass are propulsion ion propulsion. The use of electrical energy and high-frequency electromagnetic radiation eliminates the problem of significant power losses, because at this level, the laws of optics (reflection and focusing of waves by metal surfaces and dielectrics) and electrical conductivity (energy transfer through metal conductors) work. This fact is an advantage of plasma installations over thermal ones.
Investigation of the characteristics of an ion engine with a microwave generator plasma
Authors: Vavilov I S , Yachmenev P S , Fedyanin V V , Stepen P V , Lukyanchik A I , Zharikov K I 
Published: May 2020

Abstract
This paper presents the results of an experimental study of the velocity of ionized nitrogen flowing from the working chamber of an experimental sample of the primary accelerating system of the ion engine into the vacuum space. The main method of research was chosen calorimetric method. The design of a small spacecraft jet propulsion system with ionized gas acceleration in the high-frequency gap of a microwave generator is proposed. The object of the study is a prototype of the primary ion engine accelerator system with a solid-state microwave plasma generator and an accelerating gap. The study showed that a 3-watt microwave generator together with a pulsed voltage source of an accelerating potential difference of 1 W at a nitrogen consumption of 2.5 mg/s creates an ion jet whose speed reaches 30 km/s.the Current of the ion jet was 2-2.5 mkA. The field strength of the accelerating potential difference was 4450 V / m.