PSI - Issue 24

Claudia Barile et al. / Procedia Structural Integrity 24 (2019) 636–650 C. Barile et al./ Structural Integrity Procedia 00 (2019) 000–000

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Fig 8. CWT results of the AE signals recorded in Specimen

Fig 9. WPT results of the AE signals recorded in Specimen To summarize the results section, the peak amplitude recorded during the acoustic events are used as the input data for k-means++ clustering. Whereas, the cumulative counts and cumulative energy are used to calculate the value. The signal-based data, the acoustic waveforms, are used for CWT and WPT analysis.