S1710106 Piping Damage Monitoring in Industrial Plant Focused on Mode Conversion of Propagating Lamb Waves

Abstract

A broadband ultrasonic wave propagation system using macro fiber composites was developed. A structural health monitoring technique using the broadband ultrasonic wave propagation system was proposed to detect various damages with thickness changes of structural members such as corrosion wastages in piping structures, debondings in carbon fiber reinforced plastic bonding structures, and so on. In the technique, the damages were detected by received Lamb waves propagated through the damages. In this study, damage detection tests using stainless plates were carried out. Through the tests, the feasibility of the structural health monitoring technique by using Lamb waves propagation was demonstrated.