PSI - Issue 16

Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2019) 000 – 000 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2019) 000 – 000

www.elsevier.com/locate/procedia

www.elsevier.com/locate/procedia

ScienceDirect

Procedia Structural Integrity 16 (2019) 205–210

© 2019 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the 6th International Conference “Fracture Mechanics of Materials and Structural Integrity” organizers. © 2019 The Author(s). Published by Elsevier B.V. Peer- review under responsibility of the 6th International Conference “Fracture Mechanics of Materials and Structural Integrity” organizers Abstract The result of the application of the spectral methods for earching and analysis of th hidden periodiciti s in th properties of the vibration signals of the rotary machinery which allow to discov r the spectral band of th vibration periodical n -stationarity, to determine the spectrum forms, to evaluate the power of their time variation. The typical peculiarities of the defects are established on this basis, the new diagnostic indicators are formed for their detection an typification. © 2019 The Author(s). Published by Elsevier B.V. Peer- review under responsibility of the 6th International Conference “Fracture Mechanics of Materials and Structural Integrity” organizers 6th International Conference “Fracture Mechanics of Materials and Structural Integrity” Analysis of rotary mechanism fault features on the base of the spectral structure for vibration stochastic recurrence Ihor Javorskyj a,b , Roman Yuzefovych a,c, * , Pavlo Semenov d , Pavlo Kurapov c a Karpenko Physico-Mechanical Institute of the National Academy of Sciences of Ukraine, Laboratory of vibration-based diagnostics, 5, Naukova St., 79060, Lviv, Ukraine b UTP University of Sciences and Technology, Institute of Telecommunication and Computer Science, Al. Prof. S. Kaliskiego 7, 85796, Bydgoszcz, Poland c Lviv Polytechnic National University, Department of Applied Mathematics, Bandera St. 12, 79000, Lviv, Ukraine d Odessa National Maritime University, Department of hoisting and Transport Mashines and Engineering of Port Technological Equipment Mechnikova St. 34, 65029, Odesa, Ukraine Abstract The result of the application of the spectral methods for searching and analysis of the hidden periodicities in the properties of the vibration signals of the rotary machinery which allow to discover the spectral band of the vibration periodical non-stationarity, to determine the spectrum forms, to evaluate the power of their time variation. The typical peculiarities of the defects are established on this basis, the new diagnostic indicators are formed for their detection and typification. 6th International Conference “Fracture Mechanics of Materials and Structural Integrity” Analysis of ro ary m chanism fault feature on the base of the spectral structure for vibration stochastic recurrence Ihor Javorskyj a,b , Roman Yuzefovych a,c, * , Pavlo Semenov d , Pavlo Kurapov c a Karpenko Physico-Mechanical Institute of the National Academy of Sciences of Ukraine, Laboratory of vibration-based diagnostics, 5, Naukova St., 79060, Lviv, Ukraine b UTP University of Sciences and Technology, Institute of Telecommunication and Computer Science, Al. Prof. S. Kaliskiego 7, 85796, Bydgoszcz, Poland c Lviv Polytechnic National University, Department of Applied Mathematics, Bandera St. 12, 79000, Lviv, Ukraine d Odessa National Maritime University, Department of hoisting and Transport Mashines and Engineering of Port Technological Equipment Mechnikova St. 34, 65029, Odesa, Ukraine Keywords: vibration signal; periodically non-stationary random processes; unknown period; small parameter.

Keywords: vibration signal; periodically non-stationary random processes; unknown period; small parameter.

* Corresponding author. Tel.: +38-096-373-3744; fax: +38-032-263-3355. E-mail address: roman.yuzefovych@gmail.com

2452-3216 © 2019 The Author(s). Published by Elsevier B.V. Peer- review under responsibility of the 6th International Conference “Fracture Mechanics of Materials and Structural Integrity” organizers 2452-3216 © 2019 The Author(s). Published by Elsevier B.V. Peer- review under responsibility of the 6th International Conference “Fracture Mechanics of Materials and Structural Integrity” organizers * Corresponding author. Tel.: +38-096-373-3744; fax: +38-032-263-3355. E-mail address: roman.yuzefovych@gmail.com

2452-3216  2019 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the 6th International Conference “Fracture Mechanics of Materials and Structural Integrity” organizers. 10.1016/j.prostr.2019.07.042