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Sensors 2018, 18(12), 4312; https://doi.org/10.3390/s18124312

Advances in the Structural Health Monitoring of Bridges Using Piezoelectric Transducers

School of Traffic Engineering, Shenyang Jianzhu University, Shenyang 110168, Liaoning, China
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Received: 30 October 2018 / Revised: 26 November 2018 / Accepted: 2 December 2018 / Published: 7 December 2018
(This article belongs to the Special Issue Recent Advances of Piezoelectric Transducers and Applications)
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Abstract

With the rapid development of the world’s transportation infrastructure, many long-span bridges were constructed in recent years, especially in China. However, these bridges are easily subjected to various damages due to dynamic loads (such as wind-, earthquake-, and vehicle-induced vibration) or environmental factors (such as corrosion). Therefore, structural health monitoring (SHM) is vital to guarantee the safety of bridges in their service lives. With its wide frequency response range, fast response, simple preparation process, ease of processing, low cost, and other advantages, the piezoelectric transducer is commonly employed for the SHM of bridges. This paper summarizes the application of piezoelectric materials for the SHM of bridges, including the monitoring of the concrete strength, bolt looseness, steel corrosion, and grouting density. For each problem, the application of piezoelectric materials in different research methods is described. The related data processing methods for four types of bridge detection are briefly summarized, and the principles of each method in practical application are listed. Finally, issues to be studied when using piezoelectric materials for monitoring are discussed, and future application prospects and development directions are presented. View Full-Text
Keywords: structural health monitoring; bridge monitoring; lead zirconate titanate (PZT); smart aggregate; reinforced concrete; grouting compactness structural health monitoring; bridge monitoring; lead zirconate titanate (PZT); smart aggregate; reinforced concrete; grouting compactness
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Chen, Y.; Xue, X. Advances in the Structural Health Monitoring of Bridges Using Piezoelectric Transducers. Sensors 2018, 18, 4312.

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