A comparison of cure monitoring techniques

Liwei Wang*, Venkata R. Machavaram, Ramani Mahendran, Dee Harris, Surya D. Pandita, Andrew Tomlin, Eleanor Redmore, Shoaib A. Malik, Gerard F. Fernando

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Significant progress has been made in recent years on the design and deployment of optical fibre-based sensors to monitor the cross-linking (cure) reactions in thermosetting resins. In the current study, the following sensor designs were used to study cross-linking reactions of an epoxy/amine resin system: (i) intensity-based Fresnel sensors, (ii) extrinsic fibre Fabry-Perot interferometic (EFPI) sensors, (iii) fibre Bragg grating (FBG) sensors and (iv) sensor designs to enable transmission, reflection and evanescent wave spectroscopy. This paper presents a detailed study on a comparison of the above-mentioned techniques for a commercially available epoxy/amine resin system. Conventional Fourier transform infrared spectroscopy was used as the reference method for obtaining quantitative data on the cross-linking kinetics. The shrinkage of the resin during cross-linking was monitored using EFPI and FBG sensors. This paper also discusses the cross-linking data obtained using optical fibre-based evanescent wave spectroscopy.

Original languageEnglish
Title of host publicationSensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2009
EditionPART 1
DOIs
Publication statusPublished - 2009
EventSensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2009 - San Diego, CA, United States
Duration: 9 Mar 200912 Mar 2009

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
NumberPART 1
Volume7292
ISSN (Print)0277-786X

Conference

ConferenceSensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2009
Country/TerritoryUnited States
CitySan Diego, CA
Period9/03/0912/03/09

Keywords

  • Evanescent wave spectroscopy
  • Fabry-perot
  • Fibre bragg grating (FBG)
  • Fresnel sensor
  • Refractive index

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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