Lamb-wave beam-steering for integrated health monitoring applications

Emmanuel Moulin; Nicolas Bourasseau; Jamal Assaad; Christophe Delebarre

doi:10.1117/12.484101

1 August 2003 Lamb-wave beam-steering for integrated health monitoring applications

Emmanuel Moulin, Nicolas Bourasseau, Jamal Assaad, Christophe Delebarre

Proceedings Volume 5046, Nondestructive Evaluation and Health Monitoring of Aerospace Materials and Composites II; (2003) https://doi.org/10.1117/12.484101
Event: NDE for Health Monitoring and Diagnostics, 2003, San Diego, California, United States

Abstract

The use of integrated Lamb wave sources (piezoelectric transducers) is known as a possible way of performing integrated, on-line health monitoring. Either omnidirectional (circular) or quasi-unidirectional (bar-shaped) transducers can be used. However, both of them have their own drawbacks, which makes them not optimal. A much more satisfying solution could be the use of phase-delayed multi-element arrays to perform angular steering of the emitted Lamb wave beam. In this paper both the proper conditions and the limitations for the applicability and performance of Lamb wave beam steering using integrated piezoelectric arrays are established. Then experimental damage detection capabilities using this principle are demonstrated.

Citation Download Citation

Emmanuel Moulin, Nicolas Bourasseau, Jamal Assaad, and Christophe Delebarre "Lamb-wave beam-steering for integrated health monitoring applications", Proc. SPIE 5046, Nondestructive Evaluation and Health Monitoring of Aerospace Materials and Composites II, (1 August 2003); https://doi.org/10.1117/12.484101

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