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Proceedings Paper

Three-dimensional measurement of the dynamical behavior of mechanical components with laser vibrometers
Author(s): Martin Sellhorst; Reinhard Noll
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Paper Abstract

A measurement system is described that detects the Doppler- shift of light scattered by an object surface to determine the time dependence of the velocity vector at several discrete points on the object. The scattered light is received form three non-coplanar viewing directions to get information about the complete velocity vector. From the measured data the dynamic behavior of the object is derived under certain excitation conditions. In contrast to conventional methods the measurement is performed contactless without any additional mass-load to the structure. This is a decisive advantage for measurements of surface movements of components with light dynamical mass.

Paper Details

Date Published: 17 September 1997
PDF: 8 pages
Proc. SPIE 3098, Optical Inspection and Micromeasurements II, (17 September 1997); doi: 10.1117/12.281195
Show Author Affiliations
Martin Sellhorst, Verein Deutscher Ingenieure Technologiezentrum (Germany)
Reinhard Noll, Fraunhofer-Institut fuer Lasertechnik (Germany)


Published in SPIE Proceedings Vol. 3098:
Optical Inspection and Micromeasurements II
Christophe Gorecki, Editor(s)

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