Vibration Measurement and Data Analysis of a Spinning Shaft Using a Camera-Based Motion Analysis System

Abstract:

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This paper presents the use of a camera-based 3D motion analysis system for non-contact dynamic testing of a highly flexible spinning vertical shaft. The camera system uses high-resolution CMOS cameras to measure instant geometry of the shaft when visible red digital LED strobes are synchronized to work at a speed between 0.1 to 2000 frames per second. Dynamically deformed geometries are obtained by tracing the three-dimensional instantaneous coordinates of markers adhered to the shaft’s outside surface and triangulation techniques for identifying markers’ coordinates. Numerical simulation and experimental results show that the use of camera-based motion analysis systems is feasible and accurate enough for dynamic experiments. For dynamics characterization, we present the use of the Hilbert-Huang transform (HHT) for time frequency analysis of measured dynamic responses. The results show that the third-mode vibration has a cubic nonlinearity.

Info:

Periodical:

Edited by:

Honghua Tan

Pages:

203-208

DOI:

10.4028/www.scientific.net/AMM.29-32.203

Citation:

X. Qian et al., "Vibration Measurement and Data Analysis of a Spinning Shaft Using a Camera-Based Motion Analysis System", Applied Mechanics and Materials, Vols. 29-32, pp. 203-208, 2010

Online since:

August 2010

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$35.00

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