VTechWorks staff will be away for the winter holidays starting Tuesday, December 24, 2024, through Wednesday, January 1, 2025, and will not be replying to requests during this time. Thank you for your patience, and happy holidays!
 

An infiltration/cure model for manufacture of fabric composites by the resin infusion process

Simple item page
dc.contributor.authorWeideman, Mark H.en
dc.contributor.departmentEngineering Mechanicsen
dc.date.accessioned2014-03-14T21:30:37Zen
dc.date.adate2009-03-03en
dc.date.available2014-03-14T21:30:37Zen
dc.date.issued1991en
dc.date.rdate2009-03-03en
dc.date.sdate2009-03-03en
dc.description.abstractA one-dimensional 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. The infiltration model is based on D’arcy’s law for flow through porous media. Composite panels were fabricated using the RTM film infusion technique from knitted, knitted/stitched, and 2-D woven carbon preforms and Hercules 3501-6 resin. Prior to fabrication, the deflection and permeability of the preforms were measured as a function of compaction pressure. Measurements of the temperature distribution, the resin viscosity and degree of cure, and the infiltration flow front position were compared with the RTM simulation model results. The model predictions were within 12% of the experimental results. 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. Composite panels fabricated using different temperature cycles to the same state of cure and similar compaction pressures were found to have similar compressive and shear properties. Advanced cure cycles, developed from the RTM simulation model, were utilized to reduce the total cure cycle times by a factor of 3 and the total infiltration times by a factor of 2.en
dc.description.degreeMaster of Scienceen
dc.format.extentxv, 189 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-03032009-040744en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-03032009-040744/en
dc.identifier.urihttp://hdl.handle.net/10919/41375en
dc.language.isoenen
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V855_1991.W442.pdfen
dc.relation.isformatofOCLC# 25070441en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V855 1991.W442en
dc.subject.lcshComposite materialsen
dc.subject.lcshGums and resinsen
dc.subject.lcshTextile fabricsen
dc.titleAn infiltration/cure model for manufacture of fabric composites by the resin infusion processen
dc.typeThesisen
dc.type.dcmitypeTexten
thesis.degree.disciplineEngineering Mechanicsen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
LD5655.V855_1991.W442.pdf
Size:
38.23 MB
Format:
Adobe Portable Document Format
Description:
Download

Collections

Masters Theses