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Embedded Ultrasonics With Piezoelectric Wafer Active Sensors for Structural Health Monitoring of Thin-Wall Structures

[+] Author Affiliations
Victor Giurgiutiu

University of South Carolina, Columbia, SC

Paper No. IMECE2003-43552, pp. 425-433; 9 pages
doi:10.1115/IMECE2003-43552
From:
  • ASME 2003 International Mechanical Engineering Congress and Exposition
  • Aerospace
  • Washington, DC, USA, November 15–21, 2003
  • Conference Sponsors: Aerospace Division
  • ISBN: 0-7918-3707-6 | eISBN: 0-7918-4663-6, 0-7918-4664-4, 0-7918-4665-2
  • Copyright © 2003 by ASME

abstract

The capability of embedded piezoelectric water active sensors (PWAS) to perform in-situ ultrasonic nondestructive evaluation (NDE) is explored. Laboratory tests are used to prove that PWAS can satisfactorily perform Lamb wave transmission and reception. Subsequently, pulse-echo method for crack detection in an aircraft panel is illustrated. For large area scanning, a PWAS phased array is used to create the embedded ultrasonics structural radar (EUSR). In conclusion, opportunities for implementation into structural health monitoring applications and further research needs are discussed.

Copyright © 2003 by ASME

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