Pointwise fiber Bragg grating displacement sensor system for dynamic measurements

被引：32

作者：

Chuang, Kuo-Chih ^{[1
]}

Ma, Chien-Ching ^{[1
]}

机构：

[1] Natl Taiwan Univ, Dept Mech Engn, Taipei 106, Taiwan

来源：

APPLIED OPTICS | 2008年 / 47卷 / 20期

关键词：

D O I：

10.1364/AO.47.003561

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A method for setting up a fiber Bragg grating (FBG) sensor which can measure the pointwise, out-of-plane or in-plane dynamic displacement is proposed. The proposed FBG sensor is reusable. A multiplexing demodulation system based on a single long-period fiber grating is used in this study The experimental results of the steady-state motion for a multilayer piezoelectric actuator and the dynamic response of a cantilever beam subjected to impact loadings are presented. These results indicate that the proposed displacement sensor has the ability to measure the out-of-plane dynamic displacement with high sensitivity Measurements for a piezoceramic plate excited by high frequency show that the proposed displacement sensor also has the ability to provide the in-plane dynamic displacement up to 20 kHz. (C) 2008 Optical Society of America.

引用

页码：3561 / 3567

页数：7

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