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Design and Research of FBG strain sensor

Author: ZhaoLiYan
Tutor: YuCunGui
School: Nanjing University of Technology and Engineering
Course: Armament Launch Theory and Technology
Keywords: Fiber grating FBG strain sensor Design
CLC: TP212.14
Type: Master's thesis
Year: 2009
Downloads: 409
Quote: 1
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Abstract


Fiber grating sensors in recent years in the field of aerospace , ships , civil engineering, petrochemical industry , electric power industry, nuclear industry , medicine shows great potential for application . In ship safety monitoring system , the fiber Bragg grating sensors distributed in the various parts of the hull , and real-time measurement of the deformation of the hull and the analysis and processing in order to achieve the purpose of warning and fault diagnosis . The papers for FBG strain sensor in the actual use of existing problem solutions , and distributed fiber Bragg grating sensor system for health monitoring of the real ship , and achieved good results . The system proposed solutions include : ( 1 ) selection of three different base material fiber grating sensor cantilever stress loading experiments , by comparison , elected with titanium alloy as the base material of the fiber Bragg grating sensors , made ??good linear fitting degree and stable wavelength strain conversion factor, and optimize the reliability of the sensor . (2) by means of theoretical calculations and experimental verification , the sensor package \( 3) by means of theoretical analysis and experimental verification , the high temperature of 140 ℃ for 10 hours annealing the fiber grating , making the fiber grating in a short period of time to reach a steady state , an effective solution to the problem of long-term stability of the fiber grating . ( 4) special package structure strain sensitive temperature sensor to solve temperature strain cross-sensitivity of the strain sensor for temperature compensation of the strain sensor .

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CLC: > Industrial Technology > Automation technology,computer technology > Automation technology and equipment > Automation components,parts > Transmitter ( converter),the sensor > Physical sensors > Light sensor
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