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Sensors 2018, 18(7), 2267; https://doi.org/10.3390/s18072267

Effects of Applying Different Resonance Amplitude on the Performance of the Impedance-Based Health Monitoring Technique Subjected to Damage

Sustainable Infrastructure Research Center, Korea Institute of Civil Engineering & Building Technology (KICT), Gyeonggi-Do 10223, Korea
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Received: 15 June 2018 / Revised: 8 July 2018 / Accepted: 11 July 2018 / Published: 13 July 2018
(This article belongs to the Special Issue Smart Sensors and Smart Structures)
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Abstract

Smart materials such as piezoelectric transducers can be used for monitoring the health of building structures. In this study, a structural health monitoring technique known as the electromechanical impedance (EMI) method is investigated. Although the EMI method has the advantage of using a single piezoelectric patch that acts both as the actuator and as the sensor, there are still many issues to be addressed. To further understand the problem, the performance of the EMI method on a structure subjected to progressive damage at different resonance frequency ranges and peak amplitudes was investigated using three different statistical metrics: root-mean-square deviation (RMSD), mean absolute percentage deviation (MAPD) and correlation coefficient deviation (CCD). Metal plates were used throughout the study. The results acquired could be used to further understand the damage identification performance of the EMI method. View Full-Text
Keywords: electromechanical impedance; piezoelectric transducer; damage detection; structural health monitoring; nondestructive testing electromechanical impedance; piezoelectric transducer; damage detection; structural health monitoring; nondestructive 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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Na, W.S.; Seo, D.-W.; Kim, B.-C.; Park, K.-T. Effects of Applying Different Resonance Amplitude on the Performance of the Impedance-Based Health Monitoring Technique Subjected to Damage. Sensors 2018, 18, 2267.

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