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RTM: Cost-effective processing of composite structuresResin transfer molding (RTM) is a promising method for cost effective fabrication of high strength, low weight composite structures from textile preforms. In this process, dry fibers are placed in a mold, resin is introduced either by vacuum infusion or pressure, and the part is cured. RTM has been used in many industries, including automotive, recreation, and aerospace. Each of the industries has different requirements of material strength, weight, reliability, environmental resistance, cost, and production rate. These requirements drive the selection of fibers and resins, fiber volume fractions, fiber orientations, mold design, and processing equipment. Research is made into applying RTM to primary aircraft structures which require high strength and stiffness at low density. The material requirements are discussed of various industries, along with methods of orienting and distributing fibers, mold configurations, and processing parameters. Processing and material parameters such as resin viscosity, perform compaction and permeability, and tool design concepts are discussed. Experimental methods to measure preform compaction and permeability are presented.
Document ID
19920013435
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Hasko, Greg (Lockheed Engineering and Sciences Co. Hampton, VA., United States)
Dexter, H. Benson (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
September 6, 2013
Publication Date
December 1, 1991
Publication Information
Publication: NASA, Washington, Technology 2001: The Second National Technology Transfer Conference and Exposition, Volume 2
Subject Category
Composite Materials
Accession Number
92N22678
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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