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Sensors 2018, 18(5), 1591; https://doi.org/10.3390/s18051591

Damage Evaluation of Concrete Column under Impact Load Using a Piezoelectric-Based EMI Technique

1
State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China
2
School of Civil Engineering, Shenyang Jianzhu University, Shenyang 110168, China
3
Department of Mechanical Engineering, University of Houston, Houston, TX 77004, USA
*
Author to whom correspondence should be addressed.
Received: 20 March 2018 / Revised: 8 May 2018 / Accepted: 14 May 2018 / Published: 17 May 2018
(This article belongs to the Special Issue Recent Advances of Piezoelectric Transducers and Applications)
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Abstract

One of the major causes of damage to column-supported concrete structures, such as bridges and highways, are collisions from moving vehicles, such as cars and ships. It is essential to quantify the collision damage of the column so that appropriate actions can be taken to prevent catastrophic events. A widely used method to assess structural damage is through the root-mean-square deviation (RMSD) damage index established by the collected data; however, the RMSD index does not truly provide quantitative information about the structure. Conversely, the damage volume ratio that can only be obtained via simulation provides better detail about the level of damage in a structure. Furthermore, as simulation can also provide the RMSD index relating to that particular damage volume ratio, the empirically obtained RMSD index can thus be related to the structural damage degree through comparison of the empirically obtained RMSD index to numerically-obtained RMSD. Thus, this paper presents a novel method in which the impact-induced damage to a structure is simulated in order to obtain the relationship between the damage volume ratio to the RMSD index, and the relationship can be used to predict the true damage degree by comparison to the empirical RMSD index. In this paper, the collision damage of a bridge column by moving vehicles was simulated by using a concrete beam model subjected to continuous impact loadings by a freefalling steel ball. The variation in admittance signals measured by the surface attached lead zirconate titanate (PZT) patches was used to establish the RMSD index. The results demonstrate that the RMSD index and the damage ratio of concrete have a linear relationship for the particular simulation model. View Full-Text
Keywords: structural health monitoring; piezoceramic transducer; electro-mechanical impedance; concrete damage; impact loading; damage monitoring structural health monitoring; piezoceramic transducer; electro-mechanical impedance; concrete damage; impact loading; damage monitoring
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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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Fan, S.; Zhao, S.; Qi, B.; Kong, Q. Damage Evaluation of Concrete Column under Impact Load Using a Piezoelectric-Based EMI Technique. Sensors 2018, 18, 1591.

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