Browsing 2020 by Issue Date

Now showing items 1-20 of 32

    • System of Laser Monitoring of Water Pollution with Application of Relative Description of Signal Shape 

      Alekseev, V. A.; Yuran, S. I.; Usoltsev, V. P.; Shulmin, D. N. (БНТУ, 2020)
      As a rule, the wastewater treatment system is not designed to filter substances formed, as a result of beyond design basis accident. The nature of the beyond design basis accident is associated with the shortterm appearance of a clot of these substances in wastewater, determined by the volume of the substance storage tank. Therefore, a rational approach is to divert this portion ...
      2020-06-30

    • System for Assessing the Effectiveness of Temporary Blinding Devices 

      Terekhova, M.; Rudikov, S.; Shumski, A.; Shkadarevich, A. (БНТУ, 2020)
      The development of non-lethal weapons and, in particular, temporary blinding devices is associated with problem of choosing boundaries of effectiveness. The aim of present work is determination of criteria for estimation of the effects of visual jamming devices action on the naked eye. The present-day scoring system used for effectiveness estimation of laser temporary blinding ...
      2020-06-29

    • Assessment of Temperature Effects in Interior Orientation Parameters Calibration of Optoelectronic Devices 

      Starasotnikau, M. A. (БНТУ, 2020)
      A digital micromirror device (DMD) micromirrors periodic spatial structure is a measuring scale in interior orientation parameters calibration of optoelectronic devices problems, when using a DMD as a testobject. It is important that DMD micromirrors periodic spatial structure remains constant. Change in a DMD micromirrors spatial structure may occur due to heating. In addition ...
      2020-06-30

    • Ionization Efficiency in a Hot Flat Disc-Shaped Cavity 

      Turek, M. (БНТУ, 2020)
      Hot cavity ion sources of different kinds are widely used in nuclear and mass spectroscopy, especially in on-line isotope separation devices attracting attention of scientists and engineers looking for high ionization efficiency, robustness and beam purity. In the paper a new type of hot ionizer cavity is proposed: namely cavity having the shape of a flat disc, which may be ...
      2020-06-30

    • About Possibility of Remote Diagnostics of the Respiratory System by Auscultation 

      Zaitseva, E. G.; Chernetsky, M. V.; Shevel, N. A. (БНТУ, 2020)
      Development of technical base, software, accumulated information on the diagnosis of the respiratory system provided the prerequisites for creating remote diagnostics of the human respiratory system through auscultation. The known methods do not solve the problem of determining auscultation points at patent´s housing without a diagnostic specialist. The purpose of this study is ...
      2020-06-30

    • Tests of Impregnation Speed of Electrotechnical Pressboard with Insulating Oil 

      Kozak, C. (БНТУ, 2020)
      The paper presents a new test stand for ivestigating the rate of penetration of transformer oil through electrotechnical pressboard. The stand consists of a pipe, to the lower end of which is glued a pressboard plate. The pipe is filled with insulating oil. A mirror is placed under the plate, which directs its image to the lens of the camera, which takes a series of photographs ...
      2020-06-30

    • Реализация спектрального метода определения динамических характеристик средств измерений 

      Сабитов, А. Ф.; Сафина, И. А. (БНТУ, 2020)
      Основным требованием спектрального метода определения динамических характеристик средств измерений (СИ) является установление амплитудного спектра сигнала в его информативной части, включающей значение амплитудного спектра на нулевой частоте. Существующие низкочастотные анализаторы спектра имеют рабочий диапазон частот, лежащий выше нулевой частоты, что приводит к погрешности ...
      2020-06-30

    • Surface Eddy Current Probes: Excitation Systems of the Optimal Electromagnetic Field (Review) 

      Halchenko, V. Ya.; Trembovetskaya, R. V.; Tychkov, V. V. (БНТУ, 2020)
      Development of technical tools with improved metrological and operational characteristics is the actual problem of the eddy current testing. Ensuring the optimal distribution of the electromagnetic excitation field in the testing zone carries out confident detection of the defects and determination of their geometrical parameters by means of eddy current testing. The purpose of ...
      2020-06-29

    • Negative Ion Beam Emittance Calculations 

      Turek, M.; Wegierek, P. (БНТУ, 2020)
      Computer simulations are commonly used to support design and optimisation of powerful negative ion sources for the needs of future thermonuclear reactors like e. g. ITER. The aim of the paper was to study changes of produced beam quality (described by its emittance and brightness) with the geometry of the extraction system as well as extraction voltage. A two-dimensional ...
      2020-03-17

    • Методика снижения потерь информации в асинхронном двоичном однофотонном канале связи с приёмником на основе счётчика фотонов 

      Тимофеев, А. М. (БНТУ, 2020)
      Приёмные модули однофотонных систем связи при измерении маломощных оптических сигналов должны обеспечивать наименьшие потери передаваемой информации. В этой связи целесообразно использовать счётчики фотонов, которые являются высокочувствительными, однако характеризуются ошибками регистрации данных. Цель работы – разработать методику определения интенсивности регистрируемого ...
      2020-03-17

    • Математическая модель сенсора с открытой областью пространства 

      Джежора, А. А.; Завацкий, Ю. А.; Коваленко, А. В.; Науменко, А. М. (БНТУ, 2020)
      Для эффективного применения диэлектрометрических сенсоров большое значение имеет оптимизация конструктивных параметров сенсоров, таких как глубина проникновения электромагнитного поля, величина сигнала сенсора. Цель работы заключалась в построении математической модели сенсора с открытой областью пространства и расчёте его параметров. Представлены результаты расчёта основных ...
      2020-03-16

    • Измерительный преобразователь для ёмкостного сенсора воздушного зазора в гидрогенераторе 

      Левицкий, А. С.; Зайцев, Е. А.; Березниченко, В. А.; Сухорукова, А. Е. (БНТУ, 2020)
      Одним из важнейших параметров мощных гидрогенераторов является воздушный зазор между ротором и статором, и его отклонение от заданных норм является дефектом, который может привести к серьёзным авариям. Поэтому величину и форму зазора необходимо контролировать как во время осмотров, так и при эксплуатации машины. Целью данной работы являлась разработка вторичного измерительного ...
      2020-03-16

    • Afocal Mirror Systems with Small Axial Dimensions 

      Artioukhina, N. K.; Peroza, L. (БНТУ, 2020)
      The searching and designing new solutions for mirror systems, including afocal ones, has been studied for decades. In the design, it has always been difficult to combine optimization and cost. Nowadays, the problem remains relevant. The widespread use of mirror systems is due to some aspects: thermal stability, high resolution in a wide spectral range, and the absence of image ...
      2020-03-16

    • The Dynamic Behaviour of Capacitive Humidity Sensors 

      Majewski, J. (БНТУ, 2020)
      The sensor design features and the sensing material properties which can influence the response time of the polymer-based capacitive humidity sensors are shortly discussed. The ways of specifying the dynamic properties of capacitive humidity sensors in technical data sheets by the leading companies on the market are briefly characterized and discussed. The schematic view and ...
      2020-03-17

    • Dual Wavelength Chirped Pulse Regenerative Amplifier Based on Yb3+:LuAlO3 Crystal for Terahertz Applications 

      Rudenkov, A.; Kisel, V.; Yasukevich, A.; Hovhannesyan, K.; Petrosyan, A.; Kuleshov, N. (БНТУ, 2020)
      Compact diode-pumped chirped pulse regenerative amplifier systems with pulse repetition rate of hundreds kilohertz based on Yb3+-doped crystals are of practical importance for wide range of applications such as materials processing, medicine, scientific research, etc. The aim of this work was to study the Yb3+:LuAlO3 crystal based dual wavelength chirped pulse regenerative ...
      2020-03-16

    • Measurement Stand, Method and Results of Composite Electrotechnical Pressboard-Mineral Oil Electrical Measurements 

      Rogalski, P. (БНТУ, 2020)
      The paper presents a measuring stand designed and built for testing direct and alternating current properties of power transformers basic insulation component i.e. electrotechnical pressboard impregnated with transformer oil. Measurements of direct and alternating current parameters are performed using the frequency domain spectroscopy and polarization depolarization current ...
      2020-09-18

    • Features of Measuring the Hardness of a Metal Surface Modified with Ultrafine Particles of Minerals 

      Skazochkin, A. V.; Bondarenko, G. G.; Zukowski, P. (БНТУ, 2020)
      One of the important characteristics of the surface properties of metal parts subjected to friction is hardness. Hardness measurements are important for determining the operational characteristics of parts and monitoring the technological regimes of surface modification. However, hardness measurements of thin modified layers made by different methods can lead to differences in ...
      2020-09-18

    • Determination of Flow Characteristics in Technological Processes with Controlled Pressure 

      Reader, T.; Tenenev, V. A.; Chernova, A. A. (БНТУ, 2020)
      Assessment of the environmental and economic performance of a safety valve requires information about the flow of the substance through the valve when it is actuated. The goal of this paper was to determine the flow rate of the discharged substance and the mass flow rate of the substance entering the safety valve when it is actuated. Proposed a mathematical model to describe the ...
      2020-09-18

    • Determination of Parameters of Electrode Metal Transported Drops by Simulation and Visualization 

      Ilyaschenko, D. P.; Kryukov, A. V.; Lavrova, E. V.; Kuznetsov, M. A.; Verkhoturova, E. V. (БНТУ, 2020)
      The nature of the molten electrode metal melting and transfer is the main process parameter of manual metal arc welding (MMA) with coated electrodes. It significantly affects the efficiency of the welding process. For this reason the relevant task is to identify the parameters of the transferred molten electrode metal drops and their further transfer into the weld pool with maximum ...
      2020-09-18

    • Analysis of Requirements and the Feasible Limit for Error Reduction in Two-Parameter Magnetic Determination of Steels’ Hardness 

      Sandomirski, S. G. (БНТУ, 2020)
      All measurements of mechanical properties of materials in the magnetic structural analysis are indirect and relationships between the measured parameters are correlated. An important physical parameter of steel is hardness. An increase in the correlation coefficient R and a reduction in the standard deviation (SD) are achieved when controlling the hardness of steels with two-parameter ...
      2020-09-18