Accession Number : ADA304745

Title :   Study of Low-Cost Fabrication Methods for Aerospace Composite Materials.

Descriptive Note : Final rept. 6 Jan-30 Sep 77,

Corporate Author : LOCKHEED-CALIFORNIA CO BURBANK

Personal Author(s) : Chung, Harvey H.

PDF Url : ADA304745

Report Date : JAN 1978

Pagination or Media Count : 27

Abstract : Flat and hat section specimens of graphite/epoxy composite materials have been fabricated by the resin bath or wet pultrusion process and submitted to NASA-Langley. This demonstrated the feasibility of incorporating cross-plied graphite fiber reinforcements in conjunction with epoxy resin systems in the wet pultrusion process. However, the thickness constraints of the pultrusion process, the lack of dimensional stability of the crossply materials and equipment limitations affect the quality of the hat section pultrusions. The wet pultrusion process shows promise of being a low cost method for producing composite parts with constant cross section along the length. A cost analysis showed at least 80 percent cost reduction for the hat section and 40 percent for flat panel by pultrusion over the conventional manual and automated lay-up.

Descriptors :   *LOW COSTS, *FABRICATION, *PRODUCTION ENGINEERING, *GRAPHITE EPOXY COMPOSITES, METHODOLOGY, THICKNESS, STABILITY, AUTOMATION, SIZES(DIMENSIONS), COST ANALYSIS, POLYMERS, COMPOSITE MATERIALS, PANELS, CARBON FIBERS, REDUCTION, COSTS, AEROSPACE SYSTEMS, WETTING, LIMITATIONS, CONSTANTS, CROSS SECTIONS, PARTS, GRAPHITED MATERIALS, EPOXY RESINS, REINFORCING MATERIALS, REINFORCED PLASTICS, PULTRUSION.

Subject Categories : Laminates and Composite Materials
      Mfg & Industrial Eng & Control of Product Sys

Distribution Statement : APPROVED FOR PUBLIC RELEASE