Accession Number : ADA112474

Title :   A Comparison of the Delamination and Environmental Resistance of a Graphite-Epoxy and a Graphite-Bismaleimide.

Descriptive Note : Final rept. 1 Oct 80-1 Aug 81,

Corporate Author : GENERAL DYNAMICS FORT WORTH TX FORT WORTH DIV

Personal Author(s) : Wilkins,Dick J

PDF Url : ADA112474

Report Date : 15 Sep 1981

Pagination or Media Count : 215

Abstract : The objectives of this program were to compare the delamination and environmental resistance of a graphite-epoxy system (AS1/3501-6) and a graphite-bismaleimide system (T300-6K/V378A). An experimental program was conducted to determine critical values of strain-energy release rate for Mode I (peel) and Mode II (forward shear) delamination. Static delamination fracture and constant amplitude fatigue delamination growth rate data were obtained from dry specimens at -65 F, 75 F, 300 F, and 350 F, and on moisture-conditioned specimens at -65 F and 75 F.

Descriptors :   *Composite structures, *Composite materials, *Graphite, *Epoxy resins, *Airframes, *Mechanical properties, Environmental tests, Crack propagation, Heat treatment, Thermal expansion, Transition temperature, Strain rate, Comparison, Laminates, Amides, Malic acid, Tensile strength, Compressive properties

Subject Categories : Aircraft
      Laminates and Composite Materials
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE