Výsledky vyhledávání - "I. M. Yavors'kyi"

Statistical Vector-Tensor Analysis of Vibrations of a Centrifuge with Developed Defect of the Rotating Unit

Autor: Roman Yuzefovych, I. M. Yavors’kyi, I. I. Mats’ko, Pavlo Semenov

Publikováno v: Materials Science. 54:286-294

The structure of estimations of the linear and quadratic invariants of the correlation tensor function of stochastic vibrations of a centrifuge and their amplitude spectra are analyzed by the methods of coherent and component analyses for vector peri

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d336278012c8dc48c0cf46aaa6d06fdd
https://doi.org/10.1007/s11003-018-0185-0

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Influence of the Parameters of Damping and Stochastic Loading on the Properties of Longitudinal Vibrations of a Rod with Crack

Autor: Zbigniew Zakrzewski, I. M. Yavors’kyi, Roman Yuzefovych, I. I. Mats’ko

Publikováno v: Materials Science. 52:580-587

We analyze the deterministic and stochastic components of the realizations of longitudinal vibrations of a rod weakened by a crack determined with the help of numerical solutions of a nonlinear differential equation with stochastic driving force. It

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::482ff4938468a04f0c1ac65d469f09f0
https://doi.org/10.1007/s11003-017-9993-x

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Analysis of the Vibration State of a Rod Containing a Crack Under the Action of Stochastic Cyclic Loads

Autor: I. M. Yavors’kyi, І. I. Mats’ko, Roman Yuzefovych, J. Majewski

Publikováno v: Materials Science. 50:303-313

By using the numerical solutions of the second-order nonlinear differential equation, we analyze vibrations of a rod under the action of stochastic exciting forces. It is shown that, in the case of initiation of a crack, vibrations acquire the proper

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2e5005a0ccd8cb759ffa66e978998953
https://doi.org/10.1007/s11003-014-9722-7

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Stochastic Dynamic Model of the Vibration Signals of Rolling Bearing and their Analysis

Autor: I. M. Yavors’kyi, Zbigniew Zakrzewski, Roman Yuzefovych, I. I. Mats’ko

Publikováno v: Materials Science. 49:549-559

On the basis of a stochastic dynamical model of a rolling bearing, presented in the form of a system of two nonlinear second-order differential equations, we carry out computer simulation and investigate the vertical and horizontal components of vibr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4e541608d2b6f8bea1c984805a46f39a
https://doi.org/10.1007/s11003-014-9648-0

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Methods for vibration diagnostics of the initial stages of damage of rotation systems

Autor: Igor Kravets, I. M. Yavors’kyi, I. I. Mats’ko, P. P. Drabych

Publikováno v: Materials Science. 47:264-271

We present the main ideas of methods for early diagnostics of mechanical rotation systems based on the theory and statistics of periodically nonstationary random processes regarded as a mathematical model of signals of vibrations. New diagnostic crit

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https://doi.org/10.1007/s11003-011-9389-2

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Analysis of the structure of vibration signals from mechanical systems in the process of growth of a defect

Autor: Igor Kravets, I. M. Yavors’kyi, I. I. Mats’ko

Publikováno v: Materials Science. 47:26-35

We construct a statistical model of vibration response of a thin body containing a crack and study the dynamics of changes in the cross-correlation links between the stationary components of the vibration signal. It is shown that the crack size affec

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3a4c1d4d489e077037593223a02e9b8d
https://doi.org/10.1007/s11003-011-9364-y

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Methods for enhancement of the efficiency of statistical analysis of vibration signals from the bearing supports of turbines at thermal-electric power plants

Autor: P. P. Drabych, Igor Kravets, I. M. Yavors’kyi, I. Yu. Isaev, I. I. Mats’ko

Publikováno v: Materials Science. 45:378-391

We propose a model of vibrations of complex rotary systems based on the separation of the process of vibrations into three components: deterministic, stationary, and periodically nonstationary. To separate the deterministic component of signals, we u

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::77102fac198131fcde87d52e8568fcd3
https://doi.org/10.1007/s11003-009-9202-7

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Probabilistic models and statistical methods for the analysis of vibrational signals in the problems of diagnostics of machines and structures

Autor: I. M. Yavors’kyi, O. P. Drabych, I. Yu. Isaev, V. Yu. Mykhailyshyn, Yu. T. Vasylyna

Publikováno v: Materials Science. 33:655-672

We consider probabilistic models of vibrations of machines in the form of periodically correlated random processes and almost periodically correlated random processes. The problem of selection of diagnostic symptoms from the entire set of the experim

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2a5375fdeb6ecb2883f3add984a3f72f
https://doi.org/10.1007/bf02537594

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