Classification of Time–Frequency Maps of Guided Waves Using Foreground Extraction
Esteban Guerra-Bravo,
Arturo Baltazar,
Antonio Balvantin
et al.
Abstract:Guided waves propagating in mechanical structures have proved to be an essential technique for applications, such as structural health monitoring. However, it is a well-known problem that when using non-stationary guided wave signals, dispersion, and high-order vibrational modes are excited, it becomes cumbersome to detect and identify relevant information. A typical method for the characterization of these non-stationary signals is based on time–frequency (TF) mapping techniques. This method produces 2D image… Show more
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