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Sensors 2016, 16(5), 639; doi:10.3390/s16050639

Damage Detection Based on Power Dissipation Measured with PZT Sensors through the Combination of Electro-Mechanical Impedances and Guided Waves

Department of Structural Mechanics, Technical University of Madrid, C/ José Gutiérrez Abascal, 2, Madrid 28006, Spain
These authors contributed equally to this work.
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Author to whom correspondence should be addressed.
Academic Editor: Gonzalo Pajares Martinsanz
Received: 21 March 2016 / Revised: 28 April 2016 / Accepted: 29 April 2016 / Published: 5 May 2016
(This article belongs to the Special Issue State-of-the-Art Sensors Technology in Spain 2015)

Abstract

The use of piezoelectric ceramic transducers (such as Lead-Zirconate-Titanate—PZT) has become more and more widespread for Structural Health Monitoring (SHM) applications. Among all the techniques that are based on this smart sensing solution, guided waves and electro-mechanical impedance techniques have found wider acceptance, and so more studies and experimental works can be found containing these applications. However, even though these two techniques can be considered as complementary to each other, little work can be found focused on the combination of them in order to define a new and integrated damage detection procedure. In this work, this combination of techniques has been studied by proposing a new integrated damage indicator based on Electro-Mechanical Power Dissipation (EMPD). The applicability of this proposed technique has been tested through different experimental tests, with both lab-scale and real-scale structures. View Full-Text
Keywords: structural health monitoring; PZT sensors; electro-mechanical impedance; guided wave; electro-mechanical power dissipation; non-destructive testing structural health monitoring; PZT sensors; electro-mechanical impedance; guided wave; electro-mechanical power dissipation; non-destructive testing
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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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MDPI and ACS Style

Sevillano, E.; Sun, R.; Perera, R. Damage Detection Based on Power Dissipation Measured with PZT Sensors through the Combination of Electro-Mechanical Impedances and Guided Waves. Sensors 2016, 16, 639.

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