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INTERFEROMETRIC MEASUREMENT OF INJECTION NOZZLES USING ULTRA-SMALL FIBER-OPTICAL PROBES

Tilo Pfeifer , Robert Schmitt , Niels König, Guilherme Francisco Mallmann
  • Abstract:
    The measurement of boreholes with diameters smaller than 500 microns is a demanding task, which cannot be coped with state-of-the-art production metrology. Within this paper, the set-up of a miniaturized fiber probe with a diameter of 80 microns is presented. The probe is used for low-coherence interferometry for the highly precise measurement of form deviations of small boreholes. Measurements, which have been conducted in nozzles, are presented. The results prove the potential of the fiber-optical sensor for the quality inspection of high-precision parts such as injection nozzles for common-rail diesel engines.
  • Keywords:
    roundness, fiber-optic sensor, low-coherence interferometry, miniaturization
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  • DOI:
    _unreg_tc2-2013.04

Event details:

  • IMEKO TC:
    TC2
  • Event name:
    TC2 Symposium 2010
  • Title:
    19th Symposium on Photonic Measurements
  • Place:
    Hangzhou, CHINA
  • Time:
    11 September 2010 - 13 September 2010