14 May 2010 Investigations of fast-rotating bodies using an interferometric laser Doppler distance sensor system
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Abstract
One challenge in micrometrology is to measure precisely the shape of fast moved objects with high temporal resolution. Deformation measurements of lightweight composite materials are of importance to guarantee its robustness e.g. against impacts. In a high-speed rotor test rig their elastic and plastic deformations due to centrifugal forces can be evaluated. Non-contact inspection techniques with micron resolution under vacuum conditions are necessary. For the first time, we present high-speed deformation measurements of a cylindrical rotor by a non-incremental laser Doppler distance sensor system using fiber and diffractive optics. Besides the determination of the radial enlargement also wobbling of the rotor was monitored.
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P. Günther, P. Günther, F. Dreier, F. Dreier, T. Pfister, T. Pfister, J. Czarske, J. Czarske, T. Haupt, T. Haupt, M. Gude, M. Gude, W. Hufenbach, W. Hufenbach, } "Investigations of fast-rotating bodies using an interferometric laser Doppler distance sensor system", Proc. SPIE 7718, Optical Micro- and Nanometrology III, 771819 (14 May 2010); doi: 10.1117/12.854209; https://doi.org/10.1117/12.854209
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