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Proceedings Article

Design of mode selective actuators for Lamb wave excitation in composite plates

[+] Author Affiliations
Daniel Schmidt, Christoph Heinze, Wolfgang Hillger, Artur Szewieczek, Michael Sinapius, Peter Wierach

Deutsches Zentrum für Luft- und Raumfahrt e.V. (Germany)

Proc. SPIE 7984, Health Monitoring of Structural and Biological Systems 2011, 798409 (March 30, 2011); doi:10.1117/12.880034
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From Conference Volume 7984

  • Health Monitoring of Structural and Biological Systems 2011
  • Tribikram Kundu
  • San Diego, California, USA | March 06, 2011

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.

© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation

Daniel Schmidt ; Christoph Heinze ; Wolfgang Hillger ; Artur Szewieczek ; Michael Sinapius, et al.
"Design of mode selective actuators for Lamb wave excitation in composite plates", Proc. SPIE 7984, Health Monitoring of Structural and Biological Systems 2011, 798409 (March 30, 2011); doi:10.1117/12.880034; http://dx.doi.org/10.1117/12.880034


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