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Experimental modal analysis using a tracking interferometer

Authors
Journal
CIRP Annals - Manufacturing Technology
0007-8506
Publisher
Elsevier
Volume
63
Issue
1
Identifiers
DOI: 10.1016/j.cirp.2014.03.131
Keywords
  • Vibration
  • Measurement
  • Machine Tool
Disciplines
  • Design
  • Mathematics
  • Medicine

Abstract

Abstract Experimental modal analysis is carried out for machine tools and in various other industries. It is used for dynamic characterization, diagnostics, condition monitoring, design optimization and as comparison data for computation results. 3D-scanning laser Doppler velocimeters and three-axial accelerometers dominate the experimental modal analysis today. This paper presents a method for modal analysis using a tracking interferometer as well for geometric measurement as for simultaneous 3D-vibration measurement with a single laser beam. A holistic measurement procedure is developed, its performance and robustness against external influences is investigated and a benchmark against accelerometers is carried out at a machining center.

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