Title: Smart Composite Using Optic Fiber Sensor Embedded in Three Dimensional Woven Preform

Authors: Elizabeth C. Claunch, Abdel-Fattah M. Seyam, and Kara J. Peters

DOI: 10.33599/nasampe/s.19.1436

Abstract: Unexpected failure in structures such as airplanes, bridges, and dams can have catastrophic effects. Structural health monitoring (SHM) is a way to monitor the integrity of such structures, so that any critical deformation can be detected and acted upon immediately. Compared to most current SHM systems, which are applied to a structure’s exterior, this research aims to introduce a system that is an integral part of the construction material. Optic fibers are well suited to be incorporated in textiles. During composite fabrication, a polymeric optic fiber (POF) can be woven directly alongside yarns in the 3D orthogonal woven preform, creating a smart composite. This allows access to interior locations where other sensing methods may not be able to detect. Testing of this system mimics accidental impacts that can occur during the structure’s lifespan by exposing the smart composite samples to multiple low energy impacts at a localized site. The composite sensor system efficacy is then evaluated by establishing a relationship between the sensor’s location, composite damage, and the resulting POF signal. This is used to determine the best location for optic fiber sensors to be placed within the composite, so that they can accurately predict structural damage before failure occurs.

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Conference: SAMPE 2019 - Charlotte, NC

Publication Date: 2019/05/20

SKU: TP19--1436

Pages: 14

Price: FREE