Health monitoring in composite materials via peak strain sensing

Larry D. Thompson; Bruce D. Westermo

doi:10.1117/12.259055

15 November 1996 Health monitoring in composite materials via peak strain sensing

Larry D. Thompson, Bruce D. Westermo

Proceedings Volume 2944, Nondestructive Evaluation of Materials and Composites; (1996) https://doi.org/10.1117/12.259055
Event: Nondestructive Evaluation Techniques for Aging Infrastructure and Manufacturing, 1996, Scottsdale, AZ, United States

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.

Citation Download Citation

Larry D. Thompson and Bruce D. Westermo "Health monitoring in composite materials via peak strain sensing", Proc. SPIE 2944, Nondestructive Evaluation of Materials and Composites, (15 November 1996); https://doi.org/10.1117/12.259055

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