Effect of thermal residual stress on FBG sensors embedded in composite T-stiffened panels

Yujing Zhou, Gang Liu, Xueqin Li, Xiaosu Yi

Research output: Chapter in Book/Conference proceedingConference contributionpeer-review

Abstract

The reflection spectrum from the Fiber Bragg Grating (FBG) sensors embedded in the composite was disturbed because of the thermal residual stress. In this study, two types of the FBG sensors, uncoated and UV-cured resin coated FBG sensors, were embedded in the triangle area of the T-stiffened composite panels. The strains during the curing process were measured by these two kinds of FBG sensors. Through the comparison of the results, it was found that the effect of thermal residual stress on the reflection spectrum could be attenuated when the FBG sensor was coated with UV-cured resin. Furthermore, the strain responses during the low-velocity impact test were observed by both two FBG sensors. The maximum-strain measured by the coated FBG sensors was more accurately than that measured by the uncoated one.

Original languageEnglish
Title of host publicationMechanical Engineering and Materials
Subtitle of host publicationICMEM 2012
Pages1550-1554
Number of pages5
DOIs
Publication statusPublished - 2012
Externally publishedYes
Event2012 International Conference on Mechanical Engineering and Materials, ICMEM 2012 - Melbourne, VIC, Australia
Duration: 15 Jan 201216 Jan 2012

Publication series

NameApplied Mechanics and Materials
Volume152-154
ISSN (Print)1660-9336
ISSN (Electronic)1662-7482

Conference

Conference2012 International Conference on Mechanical Engineering and Materials, ICMEM 2012
Country/TerritoryAustralia
CityMelbourne, VIC
Period15/01/1216/01/12

Keywords

  • FBG sensors
  • Low-velocity impact
  • Residual strain
  • T-stiffened panel

ASJC Scopus subject areas

  • Engineering (all)

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