Fundamental Studies in Embedded Ultrasonic NDE: Lamb Waves Interaction Between Piezoelectric Wafer Active Sensors and Host Structure

Abstract

The emerging field of embedded ultrasonic NDE has the potential of producing fundamental changes in structural health monitoring, damage detection, and nondestructive evaluation by using small inexpensive and unobtrusive PWAS transducers that are permanently attached to the structure and can be interrogated at will. Unlike conventional ultrasonic transducers, PWAS are low power non-resonant devices with broadband capabilities. PWAS are about the only transducers that can be embedded in large numbers in the structure without an exorbitant cost and weight penalty. Though the PWAS capabilities have been validated experimentally, the modeling of the PWAS behavior is still being developed. Fundamental aspects of the Lamb-wave interaction between PWAS and host structure during structural health monitoring need to be studied and understood.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 2007
Accession Number
ADA472810

Entities

People

  • Yuh Chao

Organizations

  • University of South Carolina

Tags

Communities of Interest

  • Advanced Electronics
  • Biomedical
  • Sensors

DTIC Thesaurus Topics

  • Bandwidth
  • Composite Materials
  • Damage Detection
  • Detection
  • Detectors
  • Elastic Waves
  • Frequency
  • Frequency Bands
  • Group Velocity
  • Piezoelectric Materials
  • Shear Stresses
  • Structural Health Monitoring
  • Three Dimensional
  • Transducers
  • Two Dimensional
  • Wave Propagation
  • Waveforms

Readers

  • Optical Fiber Sensing and Electromagnetic Propagation.
  • Structural Health Monitoring of Composite Structures.