Experimental analysis of power generation sensing using piezoelectric effect and damage detection in noise barrier posts

Abstract

Early damage detection is crucial in infrastructure maintenance and management. However, maintaining a reliable power supply remains a key challenge in continuous structural monitoring. This study focuses on highway noise barriers, which can be damaged by corrosion, anchor bolt fatigue, and aging of embedded parts. Specifically, it examines the influence of changes in anchor bolt restraint force on the vibration characteristics and proposes power generation sensing using the piezoelectric effect. By analyzing the correlation between vibration modes and power generation energy, the findings demonstrate that power generation energy varies with the extent of damage. Furthermore, an analysis of uncertainty in the power generation response suggests its potential for effective damage detection.