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FIBER OPTIC LASER DOPPLER PROBE FOR IN-SITU TIP CLEARANCE AND VIBRATION MONITORING AT TURBO MACHINES

Thorsten Pfister, Lars Büttner, Jürgen Czarske, Richard Schodl, Hartmut Krain
  • Abstract:
    We report about a novel optical method based on laser Doppler techniques for shape and vibration monitoring of fast rotating objects. Tip clearance and vibration measurements on a transonic centrifugal compressor preformed during operation at up to 50,000 rpm and 586 m/s blade tip velocity are presented. The results are in excellent agreement with those of capacitive probes and the achieved accuracy was about 20 µm.
  • Keywords:
    shape and vibration monitoring, laser Doppler techniques, tip clearance
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  • DOI:
    _unreg_wc-2006.TC22-004

Event details:

  • IMEKO TC:
  • Event name:
    XVIII IMEKO World Congress
  • Title:

    Metrology for a Sustainable Development

  • Place:
    Rio de Janeiro, BRAZIL
  • Time:
    17 September 2006 - 22 September 2006