International Journal of Aerospace Engineering / 2013 / Article / Fig 21

Review Article

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

Figure 21

Sensing design using dual PZT transducers. (a) A schematic drawing of a dual PZT transducer; (b) different excitation and sensing combinations; (c) signals measured with sensing configurations illustrated in (b); (d) difference between signal pairs in each of the panes of (c); (e) corresponding signal differences of those illustrated in the panes of (d) but with introduction of a notch in the plate.
928627.fig.0021a
(a)
928627.fig.0021b
(b)
928627.fig.0021c
(c)
928627.fig.0021d
(d)
928627.fig.0021e
(e)