Excitation and Propagation of Longitudinal L (0, 2) Mode Ultrasonic Guided Waves for the Detection of Damages in Hexagonal Pipes: Numerical and Experimental Studies

Figure 12

Time domain waveforms received from a hexagonal pipe with a through-hole damage located in center of the top plane: (a) received from the plane monitoring point #4; (b) received from the edge monitoring point #10; and (c) average from all 12 monitoring points.

(a)

(b)

(c)