NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.

Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.

U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

PUBLICATIONS

Fourier Transform Near-Infrared Monitoring of Reacting Resins Using an Evanescent Wave High-Index Fiber-Optic Sensor

Published

Author(s)

Joy P. Dunkers, Kathleen M. Flynn, Mitchell Huang, Kimberly A. McDonough

Abstract

In this work, a high-index silica-b ased ® ber-optic mini-bundle sensor was constructed and implemented with a Fourier transform near-infrared spectrometer in the spectral region from 10 000 to 4500 cm2. The refractive index of the multimode step index ® ber was 1.618. This arrangement allows the propagation of waveguiding modes when the sensor is immersed in most resin systems. The reactions of a polyisocyanurate resin system and an epoxy resinsystem were monitored and peak assignments were made and discussed with respect to their potential for use in real-time analysis to be applied to cure control. Last, cure monitoring with this sensor was successfully demonstrated in a glass-reinforced resin transfer molded epoxy part.
Citation
Applied Spectroscopy
Pub Type
Journals

Download Paper

Local Download

Keywords

Near infrared, Fiber optics, Composite, Cure, Epoxy, Polyisocyanurate
Biomaterials

Citation

Dunkers, J. , Flynn, K. , Huang, M. and McDonough, K. (1997), Fourier Transform Near-Infrared Monitoring of Reacting Resins Using an Evanescent Wave High-Index Fiber-Optic Sensor, Applied Spectroscopy, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=854030 (Accessed October 10, 2025)

Issues

If you have any questions about this publication or are having problems accessing it, please contact [email protected].

Created November 4, 1997, Updated February 19, 2017
Was this page helpful?