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Proceedings Paper

Characterization of mode selective actuator and sensor systems for Lamb wave excitation
Author(s): Daniel Schmidt; Christoph Heinze; Wolfgang Hillger; Artur Szewieczek; Michael Sinapius; Peter Wierach
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Paper Abstract

Structural Health Monitoring (SHM) based on Lamb waves, a type of ultrasonic guided waves, is a promising technique for in-service inspection of composite structures. This study presents the development of mode selective actuator and sensor systems based on interdigital transducer (IDT) design. Various parameters such as wavelengths, number and apodization of electrodes as well as eigenfrequencies of the transducer are characterized. Therefore, an analytical model based on the theory of surface acoustic wave (SAW) filters is investigated in order to evaluate the acoustic response of the transducer. Furthermore, experimental tests on composite plates are performed.

Paper Details

Date Published: 18 April 2012
PDF: 9 pages
Proc. SPIE 8348, Health Monitoring of Structural and Biological Systems 2012, 83480R (18 April 2012); doi: 10.1117/12.914768
Show Author Affiliations
Daniel Schmidt, Deutsches Zentrum für Luft- und Raumfahrt e.V. (Germany)
Christoph Heinze, Deutsches Zentrum für Luft- und Raumfahrt e.V. (Germany)
Wolfgang Hillger, Deutsches Zentrum für Luft- und Raumfahrt e.V. (Germany)
Artur Szewieczek, Deutsches Zentrum für Luft- und Raumfahrt e.V. (Germany)
Michael Sinapius, Deutsches Zentrum für Luft- und Raumfahrt e.V. (Germany)
Peter Wierach, Deutsches Zentrum für Luft- und Raumfahrt e.V. (Germany)


Published in SPIE Proceedings Vol. 8348:
Health Monitoring of Structural and Biological Systems 2012
Tribikram Kundu, Editor(s)

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