Technical Diagnostics and Non-Destructive Testing, 2021, №02



2021 №02 (03)

DOI of Article 10.37434/tdnk2021.02.04

2021 №02 (05)

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Technical Diagnostics and Non-Destructive Testing #2, 2021, pp. 30-37

Methods and means of early vibrodiagnostics of bearing units of rotary mechanisms

I.M. Yavorskyi², R.M. Yuzefovych³, O.V. Lychak¹, M.Z. Varyvoda¹, I.H. Stetsko¹

¹G.V. Karpenko Physico-Mechanical Institute of NASU. 5 Naukova str., 79060, Lviv, Ukraine. E-mail: roman.yuzefovych@gmail.com
²University of Science and Technology, Institute of Telecommunications and Computer Science. 7 prof. S. Kaliskiego al., 85796, Bydgoszcz, Poland.
³Lviv Polytechnic National University. 12 S. Bandery str., 79013, Lviv, Ukraine.

The characteristics of methods and tools for vibration diagnostics of rotating units of mechanisms on the basis of models of vibration signals in the form of periodically correlated random processes (PKVP) are given. Those models make it possible to detect and analyze the relations of repeatability and stochasticity in the properties of vibration that allows defining appearance of defects. Such an approach significantly increases the efficiency of early detection of defects and establishment of their types. The main stages of statistical processing of vibration signals to determine the diagnostic features are described. Technical characteristics of developed vibration diagnostic systems VECTOR, PULSE and COMPACT-VIBRO are given. 33 Ref., 1 Tabl., 1 Fig.
Keywords: vibrodiagnostics, non-destructive testing, vibration signal, periodically correlated random process, specialized devices, defect, bearing

Received: 24.05.2021

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