Browsing by Author "Zaporozhets, Artur"

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Application of Wavelet Transform for Determining Diagnostic Signs
(CEUR-WS, 2019-06) Babikova, Kateryna; Isaienko, Volodymyr; Eremenko, Volodymyr; Zaporozhets, Artur
It is proposed to apply the wavelet transform to localize in time the frequency components of the information signals in this article. The wavelet transform allows to fulfil time-frequency analysis of signals, which is very important for studying the structure of a composite material from the mode composition of free oscillations. The proposed approach to the development of information signals using wavelet transform makes it possible to further study the nature of the occurrence of free oscillations and the propagation of acoustic waves in individual layers of composites and to study the change in the structure of composites from the changes in the three-dimensional wavelet spectrum.
Application of Wavelet Transform for Determining Diagnostic Signs
(CEUR-WS, 2019-06) Isaienko, Volodymyr; Babikova, Kateryna; Eremenko, Volodymyr; Zaporozhets, Artur
It is proposed to apply the wavelet transform to localize in time the frequency components of the information signals in this article. The wavelet transform allows to fulfil time-frequency analysis of signals, which is very important for studying the structure of a composite material from the mode composition of free oscillations. The proposed approach to the development of information signals using wavelet transform makes it possible to further study the nature of the occurrence of free oscillations and the propagation of acoustic waves in individual layers of composites and to study the change in the structure of composites from the changes in the three-dimensional wavelet spectrum.
Application of Wavelet Transform for Determining Diagnostic Signs
(CEUR-WS, 2019-06) Isaienko, Volodymyr; Babikova, Kateryna; Zaporozhets, Artur; Eremenko, Volodymyr
It is proposed to apply the wavelet transform to localize in time the frequency components of the information signals in this article. The wavelet transform allows to fulfil time-frequency analysis of signals, which is very important for studying the structure of a composite material from the mode composition of free oscillations. The proposed approach to the development of information signals using wavelet transform makes it possible to further study the nature of the occurrence of free oscillations and the propagation of acoustic waves in individual layers of composites and to study the change in the structure of composites from the changes in the three-dimensional wavelet spectrum.
Approaches to development the system for control of quality and combustion of biofuels
(National Aviation University, 2018-04) Zaporozhets, Artur; Ivanov, Serhii; Serhiienko, Roman
In this article the methods and facilities of the system of quality and combustion of various types of fuel are considered. The device for measuring the heat capacity and evaporation heat of moisture and organic liquids from inhomogeneous materials is considered, which is realized by the method of synchronous thermal analysis. The methods and facilities of control of burning process of fuel with using oxygen sensors are showed.
Chapter 7. Monitoring the fuel combustion process based on actual measuring of oxygen concentration in the air
(“East West” Association for Advanced Studies and Higher Education GmbH, 2017) Zaporozhets, Artur; Redko, Oleksandr; Zamurnjak, Oleksandr
Innovations in technical and natural sciences: Monograph
(East West Association for Advanced Studies and Higher Education GmbH, Vienna, 2017-02) Litvishko, Valery; Litvishko, Oleg; Myaskovskaya, Tatiana; Isaqov, Valijon; Yusupova, Mohidil; Matveeva, Ludmila; Yarzhemsky, Anatoly; Khadzaragova, Elena; Bagaeva, Madina; Valeeva, Emiliya; Ziyatdinova, Alfia; Serazetdinova, Farid; Mikhaylin, Evgeny; Stepanova, Natalya; Fomina, Suryana; Yusupovа, Naila; Khairullina, Lily; Zaporozhets, Artur; Redko, Oleksandr; Zamurnjak, Oleksandr; Nikulin, Oleg
Means of quality control of biofuels, their production and combustion
(National Aviation University, 2019) Zaporozhets, Artur; Ivanov, Serhii; Serhiienko, Roman
A device for measuring the heat capacity and heat of evaporation of moisture and organic liquids from inhomogeneous materials is presented, which implements the method of synchronous thermal analysis. The installation design and methods used in the study of biofuel samples are considered. The methods of calibration of calorimetric platforms using a reference transducer of heat flow are given. Methods and technical means for calorimetric analysis of the calorific value of biofuels are presented. A quasidifferential bomb calorimeter for measuring the specific heat of combustion of fuel samples is proposed, its structure, model, and technical characteristics are considered. A system for monitoring the quality of the combustion process in fuel systems, which is based on the change in the rotational speed of the blower fan according to the oxygen sensor signals, is proposed.
Review of methods and means of monitoring the air pollution
(Proceedings of the National Aviation University, 2019) Isaienko, Volodymyr; Zaporozhets, Artur; Babikova, Katerina; Gulevets, Dmytro; Savchenko, Serhii
The article analyzes the current state of methods and means of monitoring air pollution in Ukraine. The issues of the formation of pollutants during the combustion of various types of fuel (gaseous, liquid, solid) in large power plants are considered. The data about the largest sources of air pollution in Ukraine are given. The main disadvantages of the model of the spread of pollutants in the air, which is used as a base, are reflected. The current state of air pollution monitoring systems, both in Ukraine and in other countries, is investigated. The improvement of the existing air pollution monitoring system based on unmanned aerial vehicles is proposed.
System for Diagnosing Main Pipelines of Heat Networks Based on UAVs
(NDT Day, 2019-10-25) Zaporozhets, Artur
The possibilities of thermal aerial photography for detecting different types of defects on pipelines in a functioning state are explored. The characteristics and capabilities of the proposed set of devices for monitoring thermal losses in pipelines based on quadrocopters are considered. The created hardware-software complex for diagnosing the state of trunk pipelines of heat networks based on the UAV is considered. The obtained experimental results, confirming the possibility of differences in the technical condition of pipelines.
Using hilbert transform in diagnostic of composite materials by impedance method
(Periodica polytechnica electrical engineering and computer science, 2020-08-13) Eremenko, Volodymyr; Zaporozhets, Artur; Babak, Vitalii; Isaienko, Volodymyr; Babikova, Kateryna
The article is devoted to the problem of the increasing of information quality for the impedance method of nondestructive testing. The purpose of this article is to get for the pulsed impedance method of nondestructive testing the additional informative parameters. Instantaneous values of the information signal's amplitude is a sensitive parameter to the effects of interference, in particular friction, which necessitates the use of additional informative features. It was experimentally measured signals from defective and defectless areas of the test pattern. Using of the Hilbert transform gave possibility to determine phase characteristics of these signals and realize demodulation to extract a low-frequency envelope for further analysis of its shape. It was received the informative features as a result of researches. Among them are instantaneous frequency of a signal, the integral of a phase characteristic on the selected interval and the integral of a difference signal phase characteristics. In order to compare quality of the defect detection using selected parameters it was carried out evaluation of the testing result reliability for a product fragment made of a composite material. Considering the influence of the change in the mechanical impedance of the researched area on the phase-frequency characteristics of the output signal of the converter, it is proposed to use as the diagnostic signs: the instantaneous frequency and the value of the phase characteristic of the current signal for certain points in time. The proposed informative features enable to increase general reliability of composite materials testing by the pulsed impedance method.