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Proceedings Paper

Design of mode selective actuators for Lamb wave excitation in composite plates
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 method for in-service inspection of composite structures. In this study mode selective actuators are developed to excite a particular Lamb wave mode in composite plates. Different manufacturing technologies based on monolithic piezoceramics with applied interdigitated electrodes and piezocomposites are described. A mode selective actuator is designed and optimized. Finite element modeling and experimental tests on quasi-isotropic composite plates are performed in order to characterize the mode selectivity of the actuators.

Paper Details

Date Published: 30 March 2011
PDF: 7 pages
Proc. SPIE 7984, Health Monitoring of Structural and Biological Systems 2011, 798409 (30 March 2011); doi: 10.1117/12.880034
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. 7984:
Health Monitoring of Structural and Biological Systems 2011
Tribikram Kundu, Editor(s)

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