2021
Recent Submissions

Increasing of the Accuracy of Signalsʼ Time Parameters Measuring Using Double Pulse Trains
(БНТУ, 2021)In modern diagnostics, much attention is paid to measuring of time parameters, as well as their change over time. The purpose of this work is to develop a method for measuring of time intervals which made it possible to increase the measurement accuracy by reducing errors associated with the instability of main parameters of the pulse signal. In the most of approaches used, the ...20211222 
Application of Solutions of Uncorrected Tasksʼ Theory for Managing of Production Processesʼ Robustness
(БНТУ, 2021)The industrial revolution of “Industry 4.0” is currently underway at an active pace. Individualization of provided products and services, transition to single production, the issues of acceptability of production processes at the stage of development and design have became urgent. The aim of this work was to develop a strategy for a fundamental solution to the task of guaranteed ...20211222 
Influence of Geometry and Boundary Conditions in Area of the Cohesion between Materials on the Reflection of an Ultrasonic Beam. Part 2. Features of Experimental Simulation
(БНТУ, 2021)Improving the efficiency of diagnostics of objects with layered structure as applied to detection of poorly detectable material bonding defects is an important production task. The aim of the work was to experimentally simulate ultrasonic scattering by samples of proposed defect simulator designs with discretely and smoothly varying boundary conditions correlating with the phase ...20211222 
Application of the Correlation Measurement Method for Reconstructing of the Velocity Profile with Spatial and Temporal Discretization in Studies of the Hydrodynamics of Turbulent Flows Based on the Matrix Conductometry Method
(БНТУ, 2021)The correlation method for measuring of the coolant flow rate is used in the operation of nuclear power plants and is widespread in research practice including study of turbulent flows hydrodynamics. However the question of its applicability and possibilities in studies using the matrix conductometry method remains open. Earlier the algorithm for determining of the correlation ...20211222 
Shape and Measurement Monitoring of Inrush Current Characteristics of a BatteryCapacitive Energy Storage Device with TwoChannel Digital Oscilloscope
(БНТУ, 2021)The main reason of voltage instability in standalone power supply systems is the electric drive motors inrush current, which are usually higher than their nominal value. The most reasonable way to solve this problem is using capacitive energy storage. The purpose of research is shape and measurement monitoring of batterycapacitive energy storage device inrush current characteristics. ...20211222 
Compositionally Disordered Doped with Cerium Crystalline Garnet Type Materials for Brighter and Faster Scintillations
(БНТУ, 2021)Cedoped tetracationic garnets (Gd, M)3Al2Ga3O12(M = Y, Lu) form a family of new multipurpose promising scintillation materials. The aim of this work was to evaluate the scintillation yield in the materials of quaternary garnets activated by cerium ions with partial isovalent substitution of the matrixforming gadolinium ions by yttrium or lutetium ions. Materials were obtained ...20211222 
Autonomous Streaming Space Objects Detection Based on a Remote Optical System
(БНТУ, 2021)Traditional image processing techniques provide sustainable efficiency in the astrometry of deep space objects and in applied problems of determining the parameters of artificial satellite orbits. But the speed of the computing architecture and the functions of small optical systems are rapidly developing thus contribute to the use of a dynamic video stream for detecting and ...20211222 
Rationale for the Choice of the Ellipsoidal Reflector Parameters for Biomedical Photometers
(БНТУ, 2021)Biomedical photometersʼ informationmeasuring systems with ellipsoidal reflectors have acceptable results in determining of biological tissues optical properties in the visible and nearinfrared spectral range. These photometers make it possible to study the optical radiation propagation in turbid media for direct and inverse problems of lightscattering optics. The purpose of ...20211221 
Calculation of the Effective Energy Release Centerʼs Position of Inorganic Scintillation Detectors for Calibration at Small “Source–Detector” Distances
(БНТУ, 2021)Inorganic scintillation detectors are widely used to measure of dose rate in the environment due to their high sensitivity to photon radiation. A distinctive feature when using such detectors is the need to take into account of the position of the effective energy release center. This peculiarity is actual when using measuring instruments with inorganic scintillation detectors ...20211018 
Evaluation of the Magnet Breakaway Force Measurement Accuracy of the NT800 Sensors for Early Detection of Defects of Their Manufacturing
(БНТУ, 2021)Сontrol of mechanical stresses formed with the deposition of nickel coatings plays an important role in the diagnosis of coatings’ technical condition. Large internal stresses can lead to cracking or flaking of coatings which is completely unacceptable for critical parts and assembly units used, for example, in space technology for which reliability is of paramount importance. ...20211018 
Digital Spectral Analysis by means of the Method of Averag Modified Periodograms Using BinarySign Stochastic Quantization of Signals
(БНТУ, 2021)The method of averaging modified periodograms is one of the main methods for estimating the power spectral density (PSD). The aim of this work was the development of mathematical and algorithmic support, which can increase the computational efficiency of signals digital spectral analysis by this method. The solution to this problem is based on the use of binarysign stochastic ...20211018 
ImpulsivelyLaser Excitation and Propagation of Ultrasonic Waves through Nanomagnetic Fluid
(БНТУ, 2021)Magnetic fluids belong to the class of nanomaterials with a high gain of light absorption, aggregative and sedimentation stability as well as controllability by external fields, which is of interest to use in the field of optoacoustics. The purpose of the work was to experimentally study the effect of the optoacoustic transformation in a magnetic fluid, depending on the concentration ...20211018 
Calculation of the Effective Energy Release Centerʼs Position of Inorganic Scintillation Detectors for Calibration at Small “Source–Detector” Distances
(БНТУ, 2021)Inorganic scintillation detectors are widely used to measure of dose rate in the environment due to their high sensitivity to photon radiation. A distinctive feature when using such detectors is the need to take into account of the position of the effective energy release center. This peculiarity is actual when using measuring instruments with inorganic scintillation detectors ...20211015 
Evaluation of the Magnet Breakaway Force Measurement Accuracy of the NT800 Sensors for Early Detection of Defects of Their Manufacturing
(БНТУ, 2021)Сontrol of mechanical stresses formed with the deposition of nickel coatings plays an important role in the diagnosis of coatings’ technical condition. Large internal stresses can lead to cracking or flaking of coatings which is completely unacceptable for critical parts and assembly units used, for example, in space technology for which reliability is of paramount importance. ...20211015 
Digital Spectral Analysis by means of the Method of Averag Modified Periodograms Using BinarySign Stochastic Quantization of Signals
(БНТУ, 2021)The method of averaging modified periodograms is one of the main methods for estimating the power spectral density (PSD). The aim of this work was the development of mathematical and algorithmic support, which can increase the computational efficiency of signals digital spectral analysis by this method. The solution to this problem is based on the use of binarysign stochastic ...20211015 
ImpulsivelyLaser Excitation and Propagation of Ultrasonic Waves through Nanomagnetic Fluid
(БНТУ, 2021)Magnetic fluids belong to the class of nanomaterials with a high gain of light absorption, aggregative and sedimentation stability as well as controllability by external fields, which is of interest to use in the field of optoacoustics. The purpose of the work was to experimentally study the effect of the optoacoustic transformation in a magnetic fluid, depending on the concentration ...20211015 
LowFrequency Admittance of Capacitor with Working Substance “Insulator – Partially Disordered Semiconductor – Insulator”
(БНТУ, 2021)The study of the electrophysical characteristics of crystalline semiconductors with structural defects is of practical interest in the development of radiationresistant varactors. The capacitancevoltage characteristics of a disordered semiconductor can be used to determine the concentration of point defects in its crystal matrix. The purpose of this work is to calculate the ...20211015 
Determination of the Error in Transferring of Length Unit’s Size when Measuring the Nanoparticles’ Diameter Using an Analyzer of Particles’ Differential Electrical Mobility
(БНТУ, 2021)The quality of nanomaterials and nanotechnologies is largely determined by the stability of the applied technologies, which, to a large extent, depend on the constancy of particle sizes. In this regard, metrological problems arise that are associated both with measuring the dimensions of the microstructure of aerosols, suspensions and powders, and with ensuring the uniformity of ...20211015 
Application of Electrical Impedance Measurements’ Method for Studies of Bubble Flows
(БНТУ, 2021)One of the important tasks in carrying out a computational justification of the reliability and safety of equipment that is part of the projected nuclear power plants today is the modeling of the bubbly regime of the coolant flow. In this regard the aim of this work is the use of extended methods of using matrix conductometric systems which are widespread in research practice for ...20211014 
Expanding of Excimer Laser Photoablation’s Functionality in Ophthalmology
(БНТУ, 2021)One of the significant weaknesses of excimer laserbased vision correction devices is the difficulty of achieving a required change in the refractive properties of the cornea to sharply focus the image on the retina with distance from the working area (ablation zone) center to the periphery due to a change in the laser beam incidence angle. The study is aimed at improving the ...20211014