Health diagnosis of arch bridge suspender by acoustic emission technique

Dongsheng Li; Jinping Ou

doi:10.1117/12.725910

5 March 2007 Health diagnosis of arch bridge suspender by acoustic emission technique

Dongsheng Li, Jinping Ou

Proceedings Volume 6595, Fundamental Problems of Optoelectronics and Microelectronics III; 65952V (2007) https://doi.org/10.1117/12.725910
Event: Fundamental Problems of Optoelectronics and Microelectronics III, 2006, Harbin, China

Abstract

Conventional non-destructive methods can't be dynamically monitored the suspenders' damage levels and types, so acoustic emission (AE) technique is proposed to monitor its activity. The validity signals are determined by the relationship with risetime and duration. The ambient noise is eliminated using float threshold value and placing a guard sensor. The cement mortar and steel strand damage level is analyzed by AE parameter method and damage types are judged by waveform analyzing technique. Based on these methods, all the suspenders of Sichuan Ebian Dadu river arch bridge have been monitored using AE techniques. The monitoring results show that AE signal amplitude, energy, counts can visually display the suspenders' damage levels, the difference of waveform and frequency range express different damage type. The testing results are well coincide with the practical situation.

Citation Download Citation

Dongsheng Li and Jinping Ou "Health diagnosis of arch bridge suspender by acoustic emission technique", Proc. SPIE 6595, Fundamental Problems of Optoelectronics and Microelectronics III, 65952V (5 March 2007); https://doi.org/10.1117/12.725910

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