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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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References

Bray, D. E., and Roderick, S. K., 1989, Nondestructive Evaluation, McGraw-Hill, New York.
Sun, F., Chaudhry, Z., Liang, C., and Rogers, C. A., 1994, “Truss Structure Integrity Identification Using PZT Sensor-Actuator,” Proceedings of the Second International Conference on Intelligent Materials,” June 5–8, Colonial Williamsburg, VA, pp. 1210–1222.
Chaudhry, Z., Sun, F., and Rogers, C. A., 1995, “Localized Health Monitoring of Aircraft via Piezoelectric Actuator/Sensor Patches,” Proceedings, SPIE North American Conference on Smart Structures and Materials, San Diego, CA.
Lichtenwaler,  P. F., Dunne,  J. P., Becker,  R. S., and Baumann,  E. W., 1997, “Active Damage Interrogation System for Structural Health Monitoring,” Proc. SPIE, 3044, pp. 186–194.
de Vera Pardo, C., and Guemes, J. A., 1997, “Embedded Self-Sensing Piezoelectric for Damage Detection,” Structural Health Monitoring—Current Status and Perspective, Proceedings of the International Workshop on Structural Health Monitoring, Stanford University, Stanford, CA, Sept. 18–20.
Giurgiutiu, V., and Rogers, C. A., 1997, “Electro-Mechanical (E/M) Impedance Method for Structural Health Monitoring and Non-Destructive Evaluation,” Structural Health Monitoring—Current Status and Perspective, Proceedings of the International Workshop on Structural Health Monitoring, Stanford University, Stanford, CA, Sept. 18–20.
Sun, F., Chaudhry, Z., and Rogers, C. A., 1995, “Automated Real-Time Structural Health Monitoring via Signature Pattern Recognition,” SPIE North American Conference on Smart Structures and Materials, San Diego, CA.

Figures

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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