Experimental investigation on structural damage detection scheme based on distributed fiber optic sensors

被引：0
|
作者：
Li, S. Z. [1 ]
Wu, Z. S. [1 ]
机构：
[1] Ibaraki Univ, Dept Urban & Civil Engn, Hitachi, Ibaraki 3168511, Japan
来源：
ISISS 2005: Innovation & Sustainability of Structures, Vol 1-3 | 2005年
关键词：
damage detection; distributed fiber optic sensors; beams; experiment;
D O I：
暂无
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
An advanced structural damage detection and assessment scheme based on distributed fiber optic sensing techniques have been presented in our recent research, which are expected to bring up a new way for both static and vibration-based structural health monitoring. Based on this scheme, the experimental investigation for beam structures pre and after different levels of damage with distributed long-gage FBG sensors is carried out in this paper. Both static and dynamic macro-strain distributions throughout the beams are obtained under various controlled loading tests. By using static measurements, stiffness estimations are implemented. Moreover, two-level vibration based method is also utilized for damage detection using modal parameters from dynamic macro-strain responses. The comparison of identified damages with the exact set ones has verified the applicability and effectiveness of distributed long-gage strain sensors for damage detection and structural identification.
引用
收藏
页码：1516 / 1528
页数：13
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