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

<div>Temporal waveforms received from multiple circular through-hole damages along the circumferential direction: (a) overall time domain waveform; (b) time domain waveforms of the first reflection wave packets of L (0, 2) mode; and (c) maximum amplitude of the first L (0, 2) mode reflection wave packet with the number of the damages.</div>

Shock and Vibration

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Figure 20

Figure 20: Excitation and Propagation of Longitudinal <i>L</i> (0, 2) Mode Ultrasonic Guided Waves for the Detection of Damages in Hexagonal Pipes: Numerical and Experimental Studies 

Figure 20 | Excitation and Propagation of Longitudinal L (0, 2) Mode Ultrasonic Guided Waves for the Detection of Damages in Hexagonal Pipes: Numerical and Experimental Studies 