Novel 2D representation of vibration for local damage detection

• Autorzy: Żak G. , Obuchowski J. , Wyłomańska A. , Zimroz R.

Identyfikatory

DOI

10.5277/ms142109

• Języki publikacji: EN

Abstrakty

EN

In this paper a new 2D representation for local damage detection is presented. It is based on a vibration time series analysis. A raw vibration signal is decomposed via short-time Fourier transform and new time series for each frequency bin are differentiated to decorrelate them. For each time series, auto-correlation function is calculated. In the next step ACF maps are constructed. For healthy bearing ACF map should not have visible horizontal lines indicating damage. The method is illustrated by analysis of real data containing signals from damaged bearing and healthy for comparison.

Słowa kluczowe

EN

local damage detection; bi-frequency plane; partial autocorrelation function; fault pattern surface

• Wydawca: Wydział Geoinżynierii, Górnictwa i Geologii, Instytut Górnictwa Politechniki Wrocławskiej
• Czasopismo: Mining Science
• Rocznik: 2014
• Tom: Vol. 21
• Strony: 105--113
• Opis fizyczny: Bibliogr. 29 poz., rys.

Twórcy

autor

Żak G.

• Diagnostics and Vibro-Acoustics Science Laboratory, Wroclaw University of Technology, Na Grobli 15, 50-421 Wroclaw, Poland

autor

Obuchowski J.

• Diagnostics and Vibro-Acoustics Science Laboratory, Wroclaw University of Technology, Na Grobli 15, 50-421 Wroclaw, Poland

autor

Wyłomańska A.

• Hugo Steinhaus Center, Institute of Mathematics and Computer Science, Wroclaw University of Technology, Janiszewskiego 14a, 50-370 Wroclaw, Poland

autor

Zimroz R.

• Diagnostics and Vibro-Acoustics Science Laboratory, Wroclaw University of Technology, Na Grobli 15, 50-421 Wroclaw, Poland

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