International Journal of Aerospace Engineering / 2013 / Article / Fig 17

Review Article

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

Figure 17

Measured anti-symmetrical PAWs reflected from the edge opposite to the IUT (experiment performed at 150°C). (a) Time domain signal and (b)frequency spectrum of the 1st round trip echo signal.