TECHNICAL PAPERS: Gas Turbines: Controls, Diagnostics, and Instrumentation

Structural Health Monitoring With Piezoelectric Active Sensors

[+] Author and Article Information
H. A. Winston, F. Sun, B. S. Annigeri

United Technologies Research Center, 411 Silver Lane, East Hartford, CT 06108

J. Eng. Gas Turbines Power 123(2), 353-358 (Oct 01, 2000) (6 pages) doi:10.1115/1.1365123 History: Received October 01, 1999; Revised October 01, 2000
Copyright © 2001 by ASME
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Grahic Jump Location
Impedance variations between identical beam specimens
Grahic Jump Location
Impedance signature variation with damage location (solid line: before damage; dashed line: after damage)
Grahic Jump Location
Signature changes caused by 0.060 in. EDM cracks
Grahic Jump Location
Modal shape of the beam, top by FEM (45,773 Hz), bottom by SDLV (45,732 Hz)
Grahic Jump Location
Temperature compensation by cross correlation analysis




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