Fiber reinforced composite of high fracture toughness

Details Fiber reinforced composite of high fracture toughness Fiber reinforced composite of high fracture toughness

1974-12-23

1977-07-12

Robinson, Ellis

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Physical dimension specified

260 37R, 260 37SB, 260 37N, 260 37EP, 260 38, 260 39R, 260 40R, 260 4214, 260 4215, 260 4218, 260857R, 260 9, 427387, 428335, 428336, 428375, 428378, 428443, 428391, 428394, 428395, 428429, 428447, 428448, 428451, 428497, B32B 900, D02G 300

Patent

active

040355500

ABSTRACT:
This invention relates to fiber reinforced plastic composites, and more particularly, composites having substantially improved fracture toughness at high speed loading. In accordance with this invention, the fracture toughness of a composite is substantially improved by the use of an internal energy damping mechanism which is dependent upon the rate of loading. This energy damping mechanism comprises fibers dispersed through the composite pre-coated with a viscous fluid. Upon impact, substantial energy is dissipated at the fiber-matrix interface due to shear deformation of the coated viscous layer.

REFERENCES:
patent: 2392805 (1946-01-01), Biefeld
patent: 2723215 (1955-11-01), Biefeld
patent: 2758951 (1956-08-01), Case
patent: 3423235 (1969-01-01), Campbell
patent: 3425895 (1969-02-01), Mertzweiller
patent: 3634236 (1972-01-01), Buster
patent: 3853607 (1974-12-01), Iyengar
patent: 3924047 (1975-12-01), Ward
Martson, et al., Journal of Mat. Sci., 9, 447-455 (1974).
Atkins, Journal of Mat. Sci., 10, 819-832 (1975).

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