2021 №04 (02) DOI of Article
2021 №04 (04)

Technical Diagnostics and Non-Destructive Testing 2021 #04
Technical Diagnostics and Non-Destructive Testing #4, 2021, pp. 25-34

Methods and means of early vibration diagnostics of rotating components of mechanisms of quay container handlers

I.M. Javorskyj2, R.M. Yuzefovych3, O.V. Lychak1, P.O. Semenov4

1G.V. Karpenko Physico-Mechanical Institute of NASU. 5 Naukova Str., 79060, Lviv, Ukraine. Е-mail: roman.yuzefovych@gmail.com
2Politechnika Bydgoska. 7 Prof. Sylwestra Kaliskiego, 85-796 Bydgoszcz, Poland
3Lviv Polytechnic National University. 12 S. Bandery str., 79013, Lviv, Ukraine
4Odesa National Maritime University. 34 I. Mechnikova Str., 65029, Odesa, Ukraine

The paper describes the properties of a model of vibration of interconnected rotating mechanisms in the form of biperiodically nonstationary random processes (BPNRP). Individual cases of such a model are considered, which enable performing data analysis by the methods of periodically nonstationary random processes (PNRP). These methods are used to analyze the condition of mechanisms at increased vibration level. Separation of deterministic and stochastic vibrations was performed and parameters describing the structure of hidden periodicities of the first and second order, were determined. The causes for increased vibration level were established. 18 Ref., 3 Tabl, 14 Fig.
Keywords: hoisting mechanism, vibration, periodical nonstationarity, deterministic oscillations, amplitude spectrum, stochastic high-frequency modulation, dispersion

Received: 07.12.2021


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