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Proceedings Paper

Distributed deflection sensing of rotating beams
Author(s): Amr M. Baz; Sean Poh
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Paper Abstract

A new class of distributed sensors is presented which can measure both the linear and angular deflections of composite rotating beams. The sensor relies in its operation on a set of wires which are embedded off the neutral axes of the composite beams. The wires are arranged in a special manner which allows continuous monitoring of the deflection curve of the rotating beam without the need for knowing the modal characteristics of the beam or its rotating speed. The output signals of the wires are processed to determine the linear and angular displacements at critical discrete points along the beam axis. The theoretical and experimental performance of the sensor are presented in both the time and frequency domains. The performance is also monitored at different rotational speeds and tilt angles of the rotating beam.

Paper Details

Date Published: 8 September 1993
PDF: 17 pages
Proc. SPIE 1917, Smart Structures and Materials 1993: Smart Structures and Intelligent Systems, (8 September 1993); doi: 10.1117/12.152776
Show Author Affiliations
Amr M. Baz, Catholic Univ. of America (United States)
Sean Poh, Catholic Univ. of America (United States)


Published in SPIE Proceedings Vol. 1917:
Smart Structures and Materials 1993: Smart Structures and Intelligent Systems
Nesbitt W. Hagood; Gareth J. Knowles, Editor(s)

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