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  • Diagnostics cracks in gears with wavelet analysis
    Belšak, Aleš, 1968- ; Flašker, Jože
    A crack in the tooth root, which is the least desirable damage caused to gear units, often leads to failure of gear unit operation. A possible damage can be identified by monitoring vibrations. Time ... signals were obtained by experiments. Amplitudes of time signal vibration are, by frequency analysis, presented above all as a function of frequencies in spectrum using hybrid procedure for determining the level of non-stationarity of operating conditions primarily of rotational frequency. A non-stationary signal was analysed as well, using the family of Time Frequency Analysis tools, including Wavelets and Joint Time Frequency Analyses. Wavelet analysis is suitable primarily for non-stationary phenomena with local changes. The purpose was to obtain the location of the crack, i.e. to identify the tooth. Typical spectrogram and scalogram patterns result from reactions to faults or damages; they indicate the presence of faults or damages in a very reliable way.
    Vir: Proceedings [Elektronski vir] = Comptes rendus (10 str.)
    Vrsta gradiva - prispevek na konferenci
    Leto - 2009
    Jezik - angleški
    COBISS.SI-ID - 13337622

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