Sensors 2014, 14(3), 5147-5173; doi:10.3390/s140305147
Article

Time-Frequency Methods for Structural Health Monitoring

1,2,* email, 1,3email, 1email, 4email, 2,5email, 2,6,7email and 2,6,8email
Received: 14 November 2013; in revised form: 28 February 2014 / Accepted: 3 March 2014 / Published: 12 March 2014
(This article belongs to the Section Physical Sensors)
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.
Abstract: Detection of early warning signals for the imminent failure of large and complex engineered structures is a daunting challenge with many open research questions. In this paper we report on novel ways to perform Structural Health Monitoring (SHM) of flood protection systems (levees, earthen dikes and concrete dams) using sensor data. We present a robust data-driven anomaly detection method that combines time-frequency feature extraction, using wavelet analysis and phase shift, with one-sided classification techniques to identify the onset of failure anomalies in real-time sensor measurements. The methodology has been successfully tested at three operational levees. We detected a dam leakage in the retaining dam (Germany) and “strange” behaviour of sensors installed in a Boston levee (UK) and a Rhine levee (Germany).
Keywords: anomaly detection; structural health monitoring; time-frequency analysis; sensors; flood protection systems; levee monitoring; one-side classification; leakage detection
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MDPI and ACS Style

Pyayt, A.L.; Kozionov, A.P.; Mokhov, I.I.; Lang, B.; Meijer, R.J.; Krzhizhanovskaya, V.V.; Sloot, P.M.A. Time-Frequency Methods for Structural Health Monitoring. Sensors 2014, 14, 5147-5173.

AMA Style

Pyayt AL, Kozionov AP, Mokhov II, Lang B, Meijer RJ, Krzhizhanovskaya VV, Sloot PMA. Time-Frequency Methods for Structural Health Monitoring. Sensors. 2014; 14(3):5147-5173.

Chicago/Turabian Style

Pyayt, Alexander L.; Kozionov, Alexey P.; Mokhov, Ilya I.; Lang, Bernhard; Meijer, Robert J.; Krzhizhanovskaya, Valeria V.; Sloot, Peter M.A. 2014. "Time-Frequency Methods for Structural Health Monitoring." Sensors 14, no. 3: 5147-5173.

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