6533b82dfe1ef96bd129118e
RESEARCH PRODUCT
Comparative analysis of acoustic emission signals generated by electrical discharges measured by the hydrophone and the wideband contact transducer
Andrzej CichońT. Boczarsubject
AmplitudeMaterials scienceTransducerHydrophoneAcoustic emissionComputer Science::SoundAstrophysics::High Energy Astrophysical PhenomenaAcousticsFrequency domainGeneral Physics and AstronomySpectrogramWidebandPiezoelectricitydescription
The paper presents a comparative analysis of the acoustic emission (AE) pulses and signals generated by PDs. For this purpose the measurements of the acoustic emission signals generated by PDs were taken in the multipoint-plane system using a hydrophone placed directly in the area of discharge generation, and the AE pulses using a piezoelectric contact transducer which was on a side wall of a power transformer tub. Next, time runs and amplitude density spectra were drawn. Also the descriptors describing signals in the frequency domain were determined and the time-frequency analysis was carried out, which determined spectrograms for the energy density spectrum.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2005-10-01 | Journal de Physique IV (Proceedings) |