
Proceedings Paper
A multi-mode sensing system for corrosion detection using piezoelectric wafer active sensorsFormat | Member Price | Non-Member Price |
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Paper Abstract
As an emerging technology for in-situ damage detection and nondestructive evaluation, structural health
monitoring with active sensors (active SHM) plays as a promising candidate for the pipeline inspection and
diagnosis. Piezoelectric wafer active sensor (PWAS), as an active sensing device, can be permanently attached
to the structure to interrogate it at will and can operate in propagating wave mode or electromechanical
impedance mode. Its small size and low cost (about ~$10 each) make itself a potential and unique technology for
in-situ SHM application. The objective of the research in this paper is to develop a permanently installed in-situ
"multi-mode" sensing system for the corrosion monitoring and prediction of critical pipeline systems. Such a
system is used during in-service period, recording and monitoring the changes of the pipelines over time, such as
corrosion, wall thickness, etc. Having the real-time data available, maintenance strategies based on these data
can then be developed to ensure a safe and less expensive operation of the pipeline systems.
After a detailed review of PWAS SHM methods, including ultrasonic, impedance, and thickness
measurement, we introduce the concept of PWAS-based multi-mode sensing approach for corrosion detection in
pipelines. Particularly, we investigate the potential for using PWAS waves for in thickness mode
experimentally. Finally, experiments are conducted to verify the corrosion detection ability of the PWAS
network in both metallic plate and pipe in a laboratory setting. Results show successful corrosion localization in
both tests.
Paper Details
Date Published: 8 April 2008
PDF: 12 pages
Proc. SPIE 6932, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2008, 69322H (8 April 2008); doi: 10.1117/12.776670
Published in SPIE Proceedings Vol. 6932:
Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2008
Masayoshi Tomizuka, Editor(s)
PDF: 12 pages
Proc. SPIE 6932, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2008, 69322H (8 April 2008); doi: 10.1117/12.776670
Show Author Affiliations
Lingyu Yu, Univ. of South Carolina (United States)
Victor Giurgiutiu, Univ. of South Carolina (United States)
Victor Giurgiutiu, Univ. of South Carolina (United States)
Patrick Pollock, Univ. of South Carolina (United States)
Published in SPIE Proceedings Vol. 6932:
Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2008
Masayoshi Tomizuka, Editor(s)
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