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
      Plastics
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE