Název: Condition monitoring of thrust ball bearings using continuous AE
Autoři: Chlada, Milan ; Nohal, L. ; Převorovský, Zdeněk
Typ dokumentu: Příspěvky z konference
Konference/Akce: Europen Conference on Acoustic Emission Testing /32./, Praha (CZ), 2016-09-07 / 2016-09-09
Rok: 2016
Jazyk: eng
Abstrakt: Fast and reliable analysis of continuous AE recorded during endurance tests on flat washer parts reliably simulating critical rolling contact fatigue of the full-scale bearings is presented in the paper. Two channels of continuous AE signal were partially recorded within whole specimen lifetime tests and compared with other experimental parameters as vibration rate or temperature. As an alternative to classical spectrogram analysis, we proposed to use histograms of time intervals between threshold amplitudes crossings in various frequency bands represented by the wavelet decomposition. Results obtained on long-time records are discussed, illustrating advantages of proposed AE signal processing, which can be done in real time to observe the processes before the onset of the final damage on the surface of the specimen more precisely than vibrodiagnostics.
Klíčová slova: continuous acoustic emission; histogram of counting periods; rolling contact fatigue; thrust ball bearing; wavelet analysis
Číslo projektu: LO1202 (CEP)
Poskytovatel projektu: NETME Centre Plus - národní program udržitelnosti
Zdrojový dokument: 32nd European Conference on Acoustic Emission Testing, ISBN 978-80-214-5386-9

Instituce: Ústav termomechaniky AV ČR (web)
Informace o dostupnosti dokumentu: Dokument je dostupný v příslušném ústavu Akademie věd ČR.
Původní záznam: http://hdl.handle.net/11104/0266674

Trvalý odkaz NUŠL: http://www.nusl.cz/ntk/nusl-262545


Záznam je zařazen do těchto sbírek:
Věda a výzkum > AV ČR > Ústav termomechaniky
Konferenční materiály > Příspěvky z konference