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Registration Number

0220U101703, 0119U101190 , R & D reports

Title

Specialized devices for detection of defects in the early stages of initiation while assessing the technical state of the mechanisms.

Head

Yavorskyi Ihor M.,

Registration Date

18-02-2020

Organization

Karpenko Physico-Mechanical Institute of NASU

Description

Nondestructive control device, defects, bi-periodically correlated random processes, correlation function estimator, least squares method Object of study - bi-periodically correlated random processes generated by machines and objects of cyclic operating modes. Aim of the work (investigation) - creation of nondestructive control device, analysis of methods and facilities for nondestructive control of rotary units and mechanisms of complex machines on enterprises in Ukraine, using the least squares method (LSM) for elimination of estimation systematic error caused by leakage. Research methods - mathematical modeling, methods of theory and statistics for periodically correlated random processes, natural experiments on industrial enterprises in Ukraine. The general review of principles of technical diagnosis schemes building is carried out. The main principles and the role of diagnosis in the management providing for products, devices and systems life cycles are defined. The analysis of correlation function estimators for bi-periodically correlated random processes (BPCRP) - mathematical models of vibration signals with double stochastic recurrence obtained using least squares method is conducted. The formulas for LSM-estimator statistic characteristics that allows one to calculate processing errors for concrete type of signals and also to compare them with errors obtained in the case of component estimation are derived. The installation and the adjustment of the developed device for non-destructive control "COMPACT-VIBRO" is performed.The algorithms and the software are developed. Verification and the testing of the device is carried out on vibration stand VMS-1 and industrial machines.

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Dzeryn Oksana Yu.
Lychak Oleh V.
Luferchyk Pavlo P.
Matsko Ivan Yo.
Stetsʹko Ihor G
Trokhym Georgii R.
Yuzefovych Roman M.
Yavorskyi Ihor M.