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An infiltration/cure model for manufacture of fabric composites by the resin infusion processA 1-D infiltration/cure model was developed to simulate fabrication of advanced textile composites by the resin film infusion process. The simulation model relates the applied temperature and pressure processing cycles, along with the experimentally measured compaction and permeability characteristics of the fabric preforms, to the temperature distribution, the resin degree of cure and viscosity, and the infiltration flow front position as a function of time. The model also predicts the final panel thickness, fiber volume fraction, and resin mass for full saturation as a function of compaction pressure. Composite panels were fabricated using the RTM (Resin Transfer Molding) film infusion technique from knitted, knitted/stitched, and 2-D woven carbon preforms and Hercules 3501-6 resin. Fabric composites were fabricated at different compaction pressures and temperature cycles to determine the effects of the processing on the properties. The composites were C-scanned and micrographed to determine the quality of each panel. Advanced cure cycles, developed from the RTM simulation model, were used to reduce the total cure cycle times by a factor of 3 and the total infiltration times by a factor of 2.
Document ID
19920011931
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Weideman, Mark H.
(Virginia Polytechnic Inst. and State Univ. Blacksburg., United States)
Loos, Alfred C.
(Virginia Polytechnic Inst. and State Univ. Blacksburg., United States)
Dexter, H. Benson
(Virginia Polytechnic Inst. and State Univ. Blacksburg., United States)
Hasko, Gregory H.
(Lockheed Engineering and Sciences Co. Hampton, VA., United States)
Date Acquired
September 6, 2013
Publication Date
February 1, 1992
Subject Category
Composite Materials
Report/Patent Number
NAS 1.26:190154
CCMS-92-05
NASA-CR-190154
VPI-E-92-05
PB92-177328
Accession Number
92N21174
Funding Number(s)
CONTRACT_GRANT: NAG1-343
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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