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Title: Health monitoring of rail structures using guided waves and three-dimensional diagnostic imaging
Authors: Zhou, C
Zhang, C
Su, Z 
Yue, X
Xiang, J
Liu, G
Issue Date: Sep-2017
Source: Structural control and health monitoring, Sept. 2017, v. 24, no. 9, e1966, p. 2
Abstract: With the rapid development of high-speed railway around the world, more advanced nondestructive evaluation (NDE) and structural health monitoring (SHM) techniques are required to detect structural damage in its forming stage before the damage jeopardizes the safety of the structures. In this aspect, guided-wave-based diagnostic imaging is a recent research focus, aimed at intuitionally showing the healthy status of the structure under inspection. However, the present diagnostic imaging techniques are mostly two-dimensional imaging methods, which fail to inspect complicated solid structures. In this study, a novel three-dimensional diagnostic imaging technique was developed in conjunction with an active sensor network, capable of real-time monitoring complex solid engineering structures. The ToF-based signal features were extracted from captured guided waves signals, and subsequently applied to define field values. The effectiveness of the approach was examined by identifying a crack introduced into a part of the real rail structure using both FE simulation and experiments. Results have revealed that the developed three-dimensional imaging approach is able to quantitatively visualizing structural damage in complicated solid engineering structures. Copyright
Keywords: Guided waves
Rail structure
Structural health monitoring
Three-dimensional diagnostic imaging
Publisher: John Wiley & Sons
Journal: Structural control and health monitoring 
ISSN: 1545-2255
EISSN: 1545-2263
DOI: 10.1002/stc.1966
Rights: Copyright © 2016 John Wiley & Sons, Ltd.
This is the peer reviewed version of the following article: Zhou, C., Zhang, C., Su, Z., Yue, X., Xiang, J., & Liu, G. (2017). Health monitoring of rail structures using guided waves and three‐dimensional diagnostic imaging. Structural Control and Health Monitoring, 24(9), e1966, which has been published in final form at https://doi.org/10.1002/stc.1966. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited.
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