Inductive wireless sensor-actuator node for structural health monitoring of fiber reinforced polymers by means of Lamb-waves

Oliver Focke; Mariugenia Salas; Axel S. Herrmann; Walter Lang

doi:10.1117/12.2083778

27 March 2015 Inductive wireless sensor-actuator node for structural health monitoring of fiber reinforced polymers by means of Lamb-waves

Oliver Focke, Mariugenia Salas, Axel S. Herrmann, Walter Lang

Author Affiliations +

Proceedings Volume 9435, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2015; 94352V (2015) https://doi.org/10.1117/12.2083778
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2015, San Diego, California, United States

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.

Citation Download Citation

Oliver Focke, Mariugenia Salas, Axel S. Herrmann, and Walter Lang "Inductive wireless sensor-actuator node for structural health monitoring of fiber reinforced polymers by means of Lamb-waves", Proc. SPIE 9435, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2015, 94352V (27 March 2015); https://doi.org/10.1117/12.2083778

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