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Sensors 2019, 19(6), 1377; https://doi.org/10.3390/s19061377

Sensing Region Characteristics of Smart Piezoelectric Interface for Damage Monitoring in Plate-Like Structures

1
BK21Plus Team, Department of Ocean Engineering, Pukyong National University, 599-1 Daeyeon 3-dong, Nam-gu, Busan 608-737, Korea
2
Smart Infrastructure Technology Institute, Pukyong National University, 599-1 Daeyeon 3-dong, Nam-gu, Busan 608-737, Korea
*
Author to whom correspondence should be addressed.
Received: 28 February 2019 / Revised: 15 March 2019 / Accepted: 15 March 2019 / Published: 19 March 2019
(This article belongs to the Section Physical Sensors)
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Abstract

For impedance-based damage detection practices, the sensing range of piezoelectric devices is an important parameter that should be determined before real implementations. This study presents numerical and experimental analyses for characterizing the sensing region of a smart PZT (lead–zirconate–titanate) interface for damage monitoring in plate-like structures. First, a finite element (FE) model of the PZT interface mounted on a plate structure is established. The impedance responses of the PZT interface are numerically simulated under different damage locations inflicted in the plate domain. The impedance features are extracted from the impedance signatures to analyze the sensing distance and the damage detectability of the PZT interface. Next, the splice plate of a bolted connection is selected as a practical plate-like structure for the experimental examination of the PZT interface’s sensing region on a limited plate domain. The damage sensitivity behavior of the PZT interface is analyzed with respect to the damage location on the splice plate. An FE analysis of the corresponding PZT interface-splice plate system is also conducted to support the experimental results. View Full-Text
Keywords: impedance-based method; electromechanical impedance; PZT interface; damage sensitivity; sensing region; plate structure impedance-based method; electromechanical impedance; PZT interface; damage sensitivity; sensing region; plate structure
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Huynh, T.-C.; Lee, S.-Y.; Dang, N.-L.; Kim, J.-T. Sensing Region Characteristics of Smart Piezoelectric Interface for Damage Monitoring in Plate-Like Structures. Sensors 2019, 19, 1377.

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