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Proceedings Paper

Health monitoring in composite materials via peak strain sensing
Author(s): Larry D. Thompson; Bruce D. Westermo
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Paper Abstract

Fiber-reinforced composite materials are beginning to be employed in applications related to retrofit and repair of large-scale civil structures. This paper discusses the utilization of a passive, pea, strain monitoring technology to the damage and health assessment of composite structures. Applications considered include epoxy-matrix composite materials reinforced with chopped glass, continuous glass fibers, carbon-fiber mat as well as continuous carbon-fiber. The advantages of the various material applications are discussed as they apply to large civil structures with peak strain monitoring data presented to illustrate how the systems can be field monitored. Full-scale structural component testing as well as subscale laboratory testing results will be presented and discussed. Recommendations are provided to guide the engineering community in such composite applications and to provide a design framework for the inclusion of simple and reliable sensor systems to detect both short-term and long-term damage.

Paper Details

Date Published: 15 November 1996
PDF: 12 pages
Proc. SPIE 2944, Nondestructive Evaluation of Materials and Composites, (15 November 1996); doi: 10.1117/12.259055
Show Author Affiliations
Larry D. Thompson, Strain Monitor Systems, Inc. (United States)
Bruce D. Westermo, Strain Monitor Systems, Inc. (United States)


Published in SPIE Proceedings Vol. 2944:
Nondestructive Evaluation of Materials and Composites
Steven R. Doctor; Carol A. Nove; George Y. Baaklini, Editor(s)

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