Optimization studies of self-sensing composites

Kristin Schaaf; Patrick Rye; Sia Nemat-Nasser

doi:10.1117/12.716091

18 April 2007 Optimization studies of self-sensing composites

Kristin Schaaf, Patrick Rye, Sia Nemat-Nasser

Proceedings Volume 6529, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2007; 65292X (2007) https://doi.org/10.1117/12.716091
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2007, San Diego, California, United States

Abstract

The demand for real-time or in situ structural health monitoring has stimulated efforts to integrate self and environmental sensing capabilities into structural composite materials. Essential to the application of smart composites is the issue of the mechanical coupling of the sensor to the host material. In this study various methods of embedding sensors within the host composite material are examined. Quasi-static three-point bending (short beam) and fatigue three-point bending (short beam) tests are conducted in order to characterize the effects of introducing the sensors or suitable simulated sensors. The sensors that are examined include simulated sensors in the form of chip resistors with the original packaging geometry and thin film sensors (PVDF). The sensors are integrated into the composite either by placement between the layers of prepreg or by placement within precision punched cut-outs of the prepreg material. Thus, through these tests we determine the technique that optimizes the mechanical properties of the host composite material.

Citation Download Citation

Kristin Schaaf, Patrick Rye, and Sia Nemat-Nasser "Optimization studies of self-sensing composites", Proc. SPIE 6529, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2007, 65292X (18 April 2007); https://doi.org/10.1117/12.716091

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