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>Dispersion curves in the hexagonal pipe structure: (a) phase velocity dispersion curve (0–200 kHz), (b) group velocity dispersion curve (0–200 kHz), (c) phase velocity dispersion curve (60 kHz-140 kHz), and (d) group velocity dispersion curve (60–140 kHz).</div>

Shock and Vibration

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Figure 3

Figure 3: 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 3 | Excitation and Propagation of Longitudinal L (0, 2) Mode Ultrasonic Guided Waves for the Detection of Damages in Hexagonal Pipes: Numerical and Experimental Studies 