The use of embedded piezoelectric-wafer active-sensors for in-situ structural health monitoring of thin-wall structures is presented. Experiments performed on aircraft-grade metallic specimens of various complexities exemplified the detection procedures for near-field and far-field damage. For near-field damage detection, the electro-mechanical (E/M) impedance method was used. Systematic experiments conducted on statistical samples of incrementally damaged specimens were followed by illustrative experiments on realistic aging aircraft panels. For far-field damage detection, guided ultrasonic Lamb waves were utilized in conjunction with the pulse-echo technique. Systematic experiments conducted on aircraft-grade metallic plates were used to develop the method, while experiments performed on realistic aging-aircraft panels exemplified the crack detection procedure.
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August 2002
Technical Papers
Embedded Active Sensors for In-Situ Structural Health Monitoring of Thin-Wall Structures
Victor Giurgiutiu, Mem. ASME, Associate Professor,
e-mail: victorg@sc.edu
Victor Giurgiutiu, Mem. ASME, Associate Professor
Department of Mechanical Engineering, University of South Carolina, Columbia, SC 29208
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Andrei Zagrai, Graduate Research Assistant,
Andrei Zagrai, Graduate Research Assistant
Department of Mechanical Engineering, University of South Carolina, Columbia, SC 29208
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JingJing Bao, Graduate Research Assistant
JingJing Bao, Graduate Research Assistant
Department of Mechanical Engineering, University of South Carolina, Columbia, SC 29208
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Victor Giurgiutiu, Mem. ASME, Associate Professor
Department of Mechanical Engineering, University of South Carolina, Columbia, SC 29208
e-mail: victorg@sc.edu
Andrei Zagrai, Graduate Research Assistant
Department of Mechanical Engineering, University of South Carolina, Columbia, SC 29208
JingJing Bao, Graduate Research Assistant
Department of Mechanical Engineering, University of South Carolina, Columbia, SC 29208
Contributed by the Pressure Vessels and Piping Division and presented at the 7th Nondestructive Evaluation Topical Conference, San Antonio, Texas, April 23–25, 2001, of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS. Manuscript received by the PVP Division, May 4, 2001; revised manuscript received April 15, 2002. Associate Editor: S. Y. Zamrik.
J. Pressure Vessel Technol. Aug 2002, 124(3): 293-302 (10 pages)
Published Online: July 26, 2002
Article history
Received:
May 4, 2001
Revised:
April 15, 2002
Online:
July 26, 2002
Citation
Giurgiutiu, V., Zagrai, A., and Bao, J. (July 26, 2002). "Embedded Active Sensors for In-Situ Structural Health Monitoring of Thin-Wall Structures ." ASME. J. Pressure Vessel Technol. August 2002; 124(3): 293–302. https://doi.org/10.1115/1.1484117
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