Lamb wave generation with piezoelectric wafer active sensors for structural health monitoring

Victor Giurgiutiu

doi:10.1117/12.483492

5 August 2003 Lamb wave generation with piezoelectric wafer active sensors for structural health monitoring

Victor Giurgiutiu

Proceedings Volume 5056, Smart Structures and Materials 2003: Smart Structures and Integrated Systems; (2003) https://doi.org/10.1117/12.483492
Event: Smart Structures and Materials, 2003, San Diego, California, United States

Abstract

The capability of embedded piezoelectric wafer active sensors (PWAS) to perform in-situ nondestructive evaluation (NDE) is explored. Theoretical developments and laboratory tests are used to prove that PWAS transducers can satisfactorily perform Lamb wave transmission and reception, pulse-echo, pitch-catch, and phased array functions of conventional ultrasonics thus opening the road for embedded ultrasonics. Subsequently, crack detection in an aircraft panel with the pulse-echo method is illustrated. For large area scanning, a PWAS phased array is used to create the embedded ultrasonics structural radar (EUSR). For quality assurance, PWAS self-tests with the electromechanical impedance method are discussed.

Citation Download Citation

Victor Giurgiutiu "Lamb wave generation with piezoelectric wafer active sensors for structural health monitoring", Proc. SPIE 5056, Smart Structures and Materials 2003: Smart Structures and Integrated Systems, (5 August 2003); https://doi.org/10.1117/12.483492

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