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Measurement of roundness and run-out with distributed fiber-optic sensors

: Schmitt, R.; König, N.; Mallmann, G.F.; Depiereux, F.

International Measurement Confederation -IMEKO-, Budapest:
19th IMEKO World Congress 2009. Vol.1 : Proceedings of a meeting held 6-11 September 2009, Lisbon, Portugal
Red Hook, NY: Curran, 2009
ISBN: 978-1-61567-593-7
IMEKO World Congress <19, 2009, Lisbon>
Conference Paper
Fraunhofer IPT ()

The quality inspection of products poses a challenge towards existing production metrology techniques in terms of accuracy and speed, especially when it comes to inline or in-process measurements. In this terms, optical metrology proves its capabilities, in particular for sensible and fragile work pieces. For the inspection inside small spaces and cavities or for complex geometries, many optical metrology system are to inflexible or cannot be miniaturized enough. Within this work a set-up for a fiber-optic lowcoherence interferometer system is described. Due to the high degree of miniaturization of the sensing probe, the system can be used for demanding measuring tasks like roundness of small drilling holes or the run-out of shafts. Different evaluation measurement are presented, which underline the potential of the described system for highly accurate, non-contact inspection of rotational parts.