A Methodological Review of Piezoelectric Based Acoustic Wave Generation and Detection Techniques for Structural Health Monitoring

Figure 33

A prototype planar transducer based on the design in Figure 32 (lower left) and a pulse generation and detection probe (upper right). The PZT was 1 mm thick and 25 mm square, and the ferrite sheet was 1 mm in thickness and 26 mm square [27].