28 April 2011 Chiral braided and woven composites: design, fabrication, and electromagnetic characterization
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Abstract
This work presents a new chiral composite composed of copper wires braided with Kevlar and nylon to form conductive coils integrated among structural fiber. To create a fabric, these braids were woven with plain Kevlar fiber. This yielded a composite with all coils possessing the same handedness, producing a chiral material. The electromagnetic response of this fabric was first simulated using a finite element full-wave simulation. For the electromagnetic measurement, the sample was placed between two lens-horn antennas connected to a Vector Network Analyzer. The frequency response of the sample was scanned between 5.5 and 8GHz. The measured scattering parameters were then compared to those of the simulated model. The measured parameters agreed well with the simulation results, showing a considerable chirality within the measured frequency band. The new composite combines the strength and durability of traditional composites with an electromagnetic design to create a multifunctional material.
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Sara Wheeland, Sara Wheeland, Farhad Bayatpur, Farhad Bayatpur, Alireza V. Amirkhizi, Alireza V. Amirkhizi, Sia Nemat-Nasser, Sia Nemat-Nasser, } "Chiral braided and woven composites: design, fabrication, and electromagnetic characterization", Proc. SPIE 7978, Behavior and Mechanics of Multifunctional Materials and Composites 2011, 797812 (28 April 2011); doi: 10.1117/12.880542; https://doi.org/10.1117/12.880542
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