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Processing and Characterization of Peti Composites Fabricated by High Temperature Vartm (Section)The use of composites as primary structures on aerospace vehicles has increased dramatically over the past decade, but so have the production costs associated with their fabrication. For certain composites, high temperature vacuum assisted resin transfer molding (HT-VARTM) can offer reduced fabrication costs compared to conventional autoclave techniques. The process has been successfully used with phenylethynyl terminated imide (PETI) resins developed by NASA Langley Research Center (LaRC). In the current study, three PETI resins have been used to make test specimens using HT-VARTM. Based on previous work at NASA LaRC, larger panels with a quasi-isotropic lay-up were fabricated. The resultant composite specimens exhibited void contents of ~ 3% by volume depending on the type of carbon fabric preform used. Mechanical properties of the panels were determined at both room and elevated temperatures. Fabric permeability characterizations and limited process modeling efforts were carried out to determine infusion times and composite panel size limitations. In addition, new PETI based resins were synthesized specifically for HT-VARTM.
Document ID
20110015713
Acquisition Source
Langley Research Center
Document Type
Conference Paper
Authors
Ghose, Sayata
(National Inst. of Aerospace Hampton, VA, United States)
Cano, Roberto J.
(NASA Langley Research Center Hampton, VA, United States)
Watson, Kent A.
(National Inst. of Aerospace Hampton, VA, United States)
Britton, Sean M.
(NASA Langley Research Center Hampton, VA, United States)
Jensen, Brian J.
(NASA Langley Research Center Hampton, VA, United States)
Connell, John W.
(NASA Langley Research Center Hampton, VA, United States)
Smith, Joseph G., Jr.
(NASA Langley Research Center Hampton, VA, United States)
Loos, Alfred C.
(Michigan State Univ. East Lansing, MI, United States)
Heider, Dirk
(Delaware Univ. Newark, DE, United States)
Date Acquired
August 25, 2013
Publication Date
January 1, 2011
Subject Category
Composite Materials
Report/Patent Number
NF1676L-13047
Meeting Information
Meeting: SAMPE Europe Technical Conference - SETEC 11
Location: Leiden
Country: Netherlands
Start Date: September 14, 2011
End Date: September 16, 2011
Funding Number(s)
WBS: WBS 984754.02.07.07.15.03
Distribution Limits
Public
Copyright
Public Use Permitted.
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