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Cavitation detection in machinery

  1. Oct 31, 2013 #1
    Hi,

    Can someone please give me an insight as to what the latest techniques used to measure the cavitation on blades of pumps/turbines are? Are the any radio-isotope spectral methods to detect erosion/pitting? is sonoluminescence even observed in high speed machinery? Any other methods/ suggestions/links to sources are appreciated

    Thank you
     
  2. jcsd
  3. Oct 31, 2013 #2

    Simon Bridge

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  4. Nov 1, 2013 #3

    Bobbywhy

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    The onset of cavitation can be detected acoustically using a hydrophone and signal processing that compares the signal to known cavitation noise spectra.

    In some conditions, cavitation may be detected optically. If the fluid contains certain species of dissolved gasses picosecond flashes at specific optical wavelengths will be emitted by the collapsing bubbles. This light can be detected using a reverse-biased photodiode coupled to a transimpedance amplifier.
     
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