Acoustic emission detection using a fiber laser array

被引：0
|
作者：
Zhang, Wentao [1 ]
Huang, Wenzhu [1 ,2 ]
Ma, Huaixiang [2 ]
Li, Fang [1 ]
机构：
[1] Chinese Acad Sci, Inst Semicond, Optoelect Syst Lab, Beijing 100083, Peoples R China
[2] Shijiazhuang Tiedao Univ, Sch Mech Engn, Shijiazhuang 050043, Peoples R China
来源：
22ND INTERNATIONAL CONFERENCE ON OPTICAL FIBER SENSORS, PTS 1-3 | 2012年 / 8421卷
基金：
美国国家科学基金会;
关键词：
acoustic emission; fiber laser; array; strain; SENSORS;
D O I：
10.1117/12.974908
中图分类号：
TP7 [遥感技术];
学科分类号：
081102 ; 0816 ; 081602 ; 083002 ; 1404 ;
摘要：
In this paper we repot a novel acoustic emission detection method using a fiber laser array. The ultra-narrow line width of the DFB fiber laser will result in a low equivalent noise level when using a fiber optic interferometric demodulation. A minimum detectable strain of 10(-12) is achieved in the experiment. Three fiber lasers are used in the array and the acoustic emission is detected. The result is compared with that of a piezoelectric acoustic emission sensor.
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页数：4
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