Three-dimensional measurement of the dynamical behavior of mechanical components with laser vibrometers

Martin Sellhorst; Reinhard Noll

doi:10.1117/12.281195

17 September 1997 Three-dimensional measurement of the dynamical behavior of mechanical components with laser vibrometers

Martin Sellhorst, Reinhard Noll

Author Affiliations +

Proceedings Volume 3098, Optical Inspection and Micromeasurements II; (1997) https://doi.org/10.1117/12.281195
Event: Lasers and Optics in Manufacturing III, 1997, Munich, Germany

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.

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Martin Sellhorst and Reinhard Noll "Three-dimensional measurement of the dynamical behavior of mechanical components with laser vibrometers", Proc. SPIE 3098, Optical Inspection and Micromeasurements II, (17 September 1997); https://doi.org/10.1117/12.281195

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