Carbon filament wound cylinder and method of producing the same

Details Carbon filament wound cylinder and method of producing the same Carbon filament wound cylinder and method of producing the same

1974-06-24

1977-08-02

Lesmes, George F.

Pipes and tubular conduits

Flexible

Spirally wound material

138177, 138174, 138144, 156173, 428 36, 428212, 424377, 428378, 428902, F16L 1100, F16L 900

Patent

active

040390063

ABSTRACT:
A carbon filament wound hollow cylinder comprising at least two carbon filament layers, an inner axial direction-wound layer and an outer circumferential direction-wound layer, characterized in that the modulus of longitudinal elasticity in the circumferential direction of the inner layer is lower than that of the outer layer. Such a cylinder is capable of preventing possible crack formation after shaping owing to its much reduced residual stress exerted due to thermal expansion of a mandrel during shaping and capable of being stably employable as a rotary drum for, ultracentrifugation because compressive stress is exerted effectively to cancel tensile stress caused by thermal stress for causing interlaminer delamination during high speed rotation.

REFERENCES:
patent: 2594693 (1952-04-01), Smith
patent: 3490983 (1970-01-01), Lee
patent: 3700535 (1972-10-01), McCoy
patent: 3726751 (1973-04-01), Casadevall

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