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Proceedings Paper

Lamb wave generation with piezoelectric wafer active sensors for structural health monitoring
Author(s): Victor Giurgiutiu
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Paper 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.

Paper Details

Date Published: 5 August 2003
PDF: 12 pages
Proc. SPIE 5056, Smart Structures and Materials 2003: Smart Structures and Integrated Systems, (5 August 2003); doi: 10.1117/12.483492
Show Author Affiliations
Victor Giurgiutiu, Univ. of South Carolina (United States)

Published in SPIE Proceedings Vol. 5056:
Smart Structures and Materials 2003: Smart Structures and Integrated Systems
Amr M. Baz, Editor(s)

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