Accession Number : ADA305075

Title :   Damage Resistance of High Modulus Aramid Fiber Composites in Aircraft Applications,

Corporate Author : SOCIETY OF AUTOMOTIVE ENGINEERS INC WARRENDALE PA

Personal Author(s) : Norman, J. C.

PDF Url : ADA305075

Report Date : 11 APR 1975

Pagination or Media Count : 11

Abstract : Analyses of impact resistance are made for composites reinforced with fibers of high modulus aramid, glass, graphite, and graphite/high modulus aramid hybrids which indicate that the aramid fiber offers advantages over the other materials in thin laminate specimens when measured by Charpy, Izod, and ball drop impact tests while retaining some structural integrity. Use of the high modulus aramid fiber as a hybrid with graphite resulted in higher impact energy resistance than the all-graphite fiber composite. The fracture characteristics of notched quasi-isotropic high modulus aramid, E-glass, and A-S graphite epoxy lamina and of notched fabric epoxy lamina of aramid and of glass are analyzed. Aramid showed the highest fracture resistance, followed by glass and graphite.

Descriptors :   *TENSILE STRESS, *FIBER REINFORCED COMPOSITES, STRESS STRAIN RELATIONS, TENSILE STRENGTH, RESISTANCE, IMPACT TESTS, STRUCTURAL ANALYSIS, STIFFNESS, DAMAGE ASSESSMENT, MODULUS OF ELASTICITY, CARBON FIBERS, GLASS, FRACTURE(MECHANICS), IMPACT STRENGTH, EPOXY LAMINATES, DROP TESTS, AIRCRAFT EQUIPMENT, GRAPHITE EPOXY COMPOSITES, NOTCH TOUGHNESS, ENERGY ABSORBERS, HYBRIDIZATION, SYNTHETIC FIBERS, STRUCTURAL INTEGRITY.

Subject Categories : Laminates and Composite Materials
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE