A fiber-optic epoxy cure monitoring technique by using a wavelength-swept laser

  • Hyunjin Kim
  • , Dae Gil Kim
  • , Umesh Sampath
  • , Minho Song*
  • *Corresponding author for this work

Research output: Contribution to conferenceConference paperpeer-review

Abstract

An epoxy cure monitoring system has been constructed by combining fiber grating sensors and Fresnel reflection monitoring. The sensors measure strain and refractive index variations during the curing process, indicating the onset of gelification, the progress, and the end of curing. We used a wavelength-swept laser source to address both types of sensors. The signals from different sensors could be easily separated, resulting in simple optical setup and increased efficiency. The fiber grating sensors are demodulated by a spectrometer. The output fluctuation in the Fresnel reflection was compensated by referencing it with the tapped output of light source.

Original languageEnglish
Title of host publicationFifth Asia-Pacific Optical Sensors Conference, APOS 2015
EditorsByoungho Lee, Yunjiang Rao, Sang Bae Lee
PublisherSPIE
ISBN (Electronic)9781628418651
DOIs
StatePublished - 2015
Event5th Asia-Pacific Optical Sensors Conference, APOS 2015 - Jeju, Korea, Republic of
Duration: 2015.05.202015.05.22

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume9655
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

Conference5th Asia-Pacific Optical Sensors Conference, APOS 2015
Country/TerritoryKorea, Republic of
CityJeju
Period15.05.2015.05.22

Keywords

  • epoxy cure
  • fiber Bragg grating
  • Fresnel reflection
  • wavelength-swept laser

Quacquarelli Symonds(QS) Subject Topics

  • Materials Science
  • Computer Science & Information Systems
  • Mathematics
  • Engineering - Electrical & Electronic
  • Engineering - Petroleum
  • Data Science
  • Physics & Astronomy

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