Accession Number : ADA185136
Title : In-Situ Characterization of the Interface of Glass Reinforced Composites.
Descriptive Note : Final rept. 25 Dec 83-24 Dec 87,
Corporate Author : NATIONAL BUREAU OF STANDARDS GAITHERSBURG MD POLYMERS DIV
Personal Author(s) : Wang, F W ; Fanconi, B M
PDF Url : ADA185136
Report Date : Jun 1987
Pagination or Media Count : 63
Abstract : A technique has been developed to monitor the viscosity of curing epoxies. Fluorescence spectroscopy of viscosity-sensitive organic dyes is used together with optic fibers as a means of delivering the probing light to the measurement site and retrieving the modulated light for detection. The technique is adaptable to remote sensing through the use of optic fibers. The evanescent wave of the guided radiation is used to excite probe molecules lying at the interface between the fiber and surrounding matrix. Therefore, the technique is adaptable to in-situ characterization of the interface of glass reinforced composites.
Descriptors : *COMPOSITE MATERIALS, *GLASS REINFORCED PLASTICS, FIBER REINFORCED COMPOSITES, EPOXY RESINS, POLYIMIDE RESINS, POLYMERIZATION, MONITORING, REMOTE DETECTORS, CORROSION RESISTANCE, WEIGHT, VISCOSITY, STIFFNESS, INDUSTRIAL PRODUCTION, AUTOMATION, INTERFACES, FIBER OPTICS, FLUORESCENCE, SPECTROSCOPY, LASERS, DYES, EXCIMERS, DIELECTRIC PROPERTIES
Subject Categories : Laminates and Composite Materials
Distribution Statement : APPROVED FOR PUBLIC RELEASE