Title :
Acoustic emission spectral analysis of ultrasound induced cavitation in insulating oil
Author :
M. Lorenc;M. Szmechta;D. Zmarzly;T. Boczar
Author_Institution :
Opole University of Technology, Department of Electrical Engineering, Automatic Control and Computer Science 45-758, ul. Pr?szkowska 76, Poland
Abstract :
The paper presents some spectral analysis results of acoustic emission observed during ultrasound driven round bottomed flask with fresh insulating oil inside. At suitable value of signal amplitude and frequency many of cavitation bubbles were observed. Collapsing bubbles were responsible for broadband noise included in acoustic emission signal spectra. To represent the cavitation intensity a simple cavitation indicator based on power spectral densities of acoustic emission signal was proposed.
Keywords :
"Acoustic emission","Petroleum","Acoustics","Acoustic measurements","Broadband communication","Frequency estimation","Aging"
Conference_Titel :
Electrical Insulating Materials, 2008. (ISEIM 2008). International Symposium on
Print_ISBN :
978-4-88686-005-7
DOI :
10.1109/ISEIM.2008.4664583
