Accession Number : ADA332676
Title : Determination of Corner and Edge Permeability in Resin Transfer Molding
Descriptive Note : Final rept
Corporate Author : MINNESOTA UNIV MINNEAPOLIS
Personal Author(s) : Mantell, S. C.
PDF Url : ADA332676
Report Date : AUG 1997
Pagination or Media Count : 10
Abstract : Resin flow in resin transfer molding may be strongly influenced by small heterogeneities in the fiber preform, such as narrow channels formed by bending and fitting into a mold An evaluation of preform permeability in these regions of nonuniform packing was studied. The study incorporated an empirical and analytic approach to iteratively determine the permeability in these regions. Flow front data were recorded for high fiber volume fraction woven fiber preforms. Two studies were conducted: one study addressed permeability associated with edge gaps, a second study addressed gaps caused by bending a fiber mat over a 90 degree mold edge.
Descriptors : *PERMEABILITY, *MOLDINGS, *PLASTICS, INJECTION, VOLUME, FIBERS, POLYMERS, EDGES, HETEROGENEITY, FLOW, RADIUS(MEASURE).
Subject Categories : Laminates and Composite Materials
Distribution Statement : APPROVED FOR PUBLIC RELEASE