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Proceedings Paper

Inductive wireless sensor-actuator node for structural health monitoring of fiber reinforced polymers by means of Lamb-waves
Author(s): Oliver Focke; Mariugenia Salas; Axel S. Herrmann; Walter Lang
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Paper Abstract

Wireless excitation of Piezo-Wafer-Active-Sensors (PWAS) was achieved using Low-frequency coils produced via Tailored-Fiber-Placement. Carbon Fiber Reinforced Polymer behaves as conductor and depending on the frequency it shields radio waves; this effect is rising at high-frequency. A high permeability material was placed under the highfrequency antenna and re-tuning was performed to improve the quality of transmission. In this manner sensor responses were successfully transmitted wirelessly by analog amplitude modulation. The signals were evaluated to verify the functionality in presence of defects like delamination or holes. Generated power was confirmed to be enough to excite the actuator.

Paper Details

Date Published: 27 March 2015
PDF: 10 pages
Proc. SPIE 9435, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2015, 94352V (27 March 2015); doi: 10.1117/12.2083778
Show Author Affiliations
Oliver Focke, Faserinstitut Bremen e.V. (Germany)
Mariugenia Salas, Friedrich Wilhelm Bessel Institute (Germany)
Axel S. Herrmann, Faserinstitut Bremen e.V. (Germany)
Univ. Bremen (Germany)
Walter Lang, Friedrich Wilhelm Bessel Institute (Germany)
Institut für Mikrosensoren (Germany)

Published in SPIE Proceedings Vol. 9435:
Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2015
Jerome P. Lynch, Editor(s)

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