Developmental Study of Sound Monitoring System on Bridge Structures for Damage Identification
Takashi Obata, Yasuhiro ASAKA, Yasunori Miyamori, Toshiro Hayashikawa, Koichi Sato · The Proceedings of the Symposium on the Motion and Vibration Control · 2003
Recently, long-lived active use of infrastructures has become a very important problem in all over the world. The damage identification of infrastructures is the effective technique for the maintenance and rehabilitation of bridges, tunnels and so on. The purpose of this study is to propose a sound monitoring system for bridges and investigate damage identification method by using sound monitoring data. The sound monitoring damage identification system in this study is constructed by using digital audio interface and dynamic microphone sensors. The damage identification method is fractal dimension analyses performed for damaged and non-damaged data, and the alteration of fractal dimensions is investigated. From results, the possibility of application for identifying bridge damage is discussed.