“…Elastic waves can interact with structure discontinuities caused by different kinds of damage enabling successful PZT use for Structural Health Monitoring. There exists a vast literature on the subject, providing numerous examples of PZT application [ 11 ], in particular to: - cracks detection and their growth monitoring [ 12 , 13 , 14 ];
- bolt and rivet joints monitoring [ 15 , 16 , 17 , 18 , 19 ];
- corrosion detection [ 20 , 21 , 22 ];
- concrete structures and soil properties monitoring [ 23 , 24 , 25 , 26 ];
- pipeline damage detection [ 27 , 28 ];
- large structure monitoring [ 29 , 30 , 31 , 32 ];
- malignant tumor detection [ 33 ];
- other applications [ 34 , 35 ].
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