Related Experiment Video
Updated: Mar 25, 2026
Fabrication and Characterization of Thickness Mode Piezoelectric Devices for Atomization and Acoustofluidics
Published on: August 5, 2020
Pipe Attrition Acoustic Locater (PAAL) from multi-mode dispersion analysis
Bouko Vogelaar1, Michael Golombok2, Xander Campman2
1Department of Mechanical Engineering, Eindhoven University of Technology, Groene Loper 15, 5600MB Eindhoven, The Netherlands.
Abstract:
Multi-mode dispersion imaging shows that pure dispersion-free torsional waves are reflected at a pipe end and flexural wave modes are suppressed. This effect can be used to locate and assess internal damage. The end reflection coefficient of this single propagating mode decreases with increasing wear. The pipe damage is located from the travel time of the torsional wave component reflected from the damage point.
