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Proceedings Paper

Design and evaluation of passive and active structural health monitoring systems for bridges and buildings
Author(s): Bruce D. Westermo; Larry D. Thompson
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Paper Abstract

Structural health monitoring systems have been designed and evaluated in the laboratory for installation in several bridges and commercial buildings. The systems employ solid-state sensor elements which experience a strain-dependent phase transformation from a metastable, nonmagnetic, austenitic phase to the stable, ferromagnetic, martensitic phase. The irreversible phase transformation is useful for indicating the level of peak structural strain experienced in a particular monitored location. Some of the sensor material characteristics and details related to the phase transformation are discussed as applied to structural health monitoring. The design of representative systems for bridges and commercial buildings is included. Important system(s) features and design capabilities are discussed. Finally, the evaluation of passive and active systems in the laboratory is discussed. The results of experiments detailing the behavior of these systems under uniaxial tension and cyclic loading conditions are presented.

Paper Details

Date Published: 20 April 1995
PDF: 10 pages
Proc. SPIE 2446, Smart Structures and Materials 1995: Smart Systems for Bridges, Structures, and Highways, (20 April 1995); doi: 10.1117/12.207743
Show Author Affiliations
Bruce D. Westermo, Strain Monitor Systems, Inc. (United States)
Larry D. Thompson, Strain Monitor Systems, Inc. (United States)


Published in SPIE Proceedings Vol. 2446:
Smart Structures and Materials 1995: Smart Systems for Bridges, Structures, and Highways
Larryl K. Matthews, Editor(s)

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