Performance analysis of all-fiber polarimetric strain sensor for composites structural health monitoring

被引：15
作者：
Hegde, G [1 ]
Asundi, A
机构：
[1] Ngee Ann Polytech, Sch Engn, Div Elect & Comp Engn, Singapore 599489, Singapore
[2] Nanyang Technol Univ, Sch Mech & Prod Engn, Singapore 639798, Singapore
来源：
NDT & E INTERNATIONAL | 2006年 / 39卷 / 04期
关键词：
polarimetric sensor; all-fiber; multifiber; smart structures; composites;
D O I：
10.1016/j.ndteint.2005.09.003
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
An improved design comprising a multifiber configuration for a polarimetric fiber optic sensor in real time structural health monitoring is presented in this paper. The sensor is in the form of a multifiber assembly composed of a high-birefringent (HiBi) sensing fiber and a single mode polarization maintaining (PM) fiber or a HiBi fiber as a lead-in and lead-out fiber, all spliced in sequence. The polarization behavior of the assembly is analyzed theoretically using Stokes matrix method for the monochromatic case. Based on this model a phase shift compensation method for multifiber sensors is proposed. The design also helps reduce the bulky optical component in the sensor. The static and dynamic responses of these multifiber sensors are experimentally evaluated to test the structural integrity of composites. (c) 2005 Elsevier Ltd. All rights reserved.
引用
收藏
页码：320 / 327
页数：8
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