Fiber-optic Raman spectroscopy for cure monitoring of advanced polymer composites
The curing reaction of an epoxy matrix used for wet filament-wound composites was monitored using Raman spectroscopy measured over fiber optics. The resin system consists of the diglycidyl ether of bisphenol-A in combination with a polyethertriamine hardener in a 1:1 stoichiometric ratio. The extent of chemical reaction of the epoxy as a function of time was measurable through changes in peak heights of several vibrational modes. A Raman peak associated with a phenyl ring vibration in epoxide component was used as in internal reference to correct for density changes and instrumental variations. Temperature measurements were made over the same fiber optics used to obtain the cure chemistry data by measuring the intensity of anti-Stokes Raman scattering from the epoxy. Both single-fiber and dual-fiber probes were evaluated.
- Research Organization:
- Lawrence Livermore National Lab., CA (United States)
- Sponsoring Organization:
- USDOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 5612295
- Report Number(s):
- UCRL-JC-109213; CONF-920572-2; ON: DE92008619
- Resource Relation:
- Conference: ANTEC 1992, Detroit, MI (United States), 3-7 May 1992
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CURING
MONITORING
RESINS
COMPOSITE MATERIALS
FIBER OPTICS
RAMAN SPECTROSCOPY
TEMPERATURE MEASUREMENT
LASER SPECTROSCOPY
MATERIALS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PETROCHEMICALS
PETROLEUM PRODUCTS
POLYMERS
SPECTROSCOPY
440600* - Optical Instrumentation- (1990-)
360603 - Materials- Properties
400102 - Chemical & Spectral Procedures