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

Daniel Schmidt; Christoph Heinze; Wolfgang Hillger; Artur Szewieczek; Michael Sinapius; Peter Wierach

doi:10.1117/12.880034

30 March 2011 Design of mode selective actuators for Lamb wave excitation in composite plates

Daniel Schmidt, Christoph Heinze, Wolfgang Hillger, Artur Szewieczek, Michael Sinapius, Peter Wierach

Proceedings Volume 7984, Health Monitoring of Structural and Biological Systems 2011; 798409 (2011) https://doi.org/10.1117/12.880034
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2011, San Diego, California, United States

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.

Citation Download Citation

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

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