Fiber-optic intrinsic distributed acoustic emission sensor for large structure health monitoring

被引：85
|
作者：
Liang, Sheng [1 ]
Zhang, Chunxi [1 ]
Lin, Wentai [1 ]
Li, Lijing [1 ]
Li, Chen [1 ]
Feng, Xiujuan [1 ]
Lin, Bo [2 ]
机构：
[1] Beihang Univ, Sch Instrument Sci & Optoelect Engn, Beijing 100191, Peoples R China
[2] Nanyang Technol Univ, Sch Elect & Elect Engn, Photon Res Ctr, Singapore 639798, Singapore
来源：
OPTICS LETTERS | 2009年 / 34卷 / 12期
关键词：
SYSTEM;
D O I：
10.1364/OL.34.001858
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A fiber-optic intrinsic distributed acoustic emission (AE) sensor is proposed. By measuring the time delay of two signals from two Mach-Zehnder interferometers, the location of AE can be deduced, and the corresponding sensor is experimentally verified to be feasible with a 206 m average location error in a 20 km sensing range, which shows that this proposed sensor is applicable for distributed AE sensing for large structure health monitoring, with the unique advantages of low cost, simple configuration, and long sensing range. The limitations of the proposed sensor are also discussed, and the future work is presented. (C) 2009 Optical Society of America
引用
收藏
页码：1858 / 1860
页数：3
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