Method of fabricating composite structures

Details Method of fabricating composite structures Method of fabricating composite structures

1990-09-05

1992-01-28

Woo, Jay H.

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Agglomeration or accretion

264258, 264313, 264324, 156173, 156187, B29C 4320, B29C 4352

Patent

active

050842196

ABSTRACT:
A method of fabricating structures formed from composite materials by positioning the structure about a high coefficient of thermal expansion material, wrapping a graphite fiber overwrap about the structure, and thereafter heating the assembly to expand the high coefficient of thermal expansion material to forcibly compress the composite structure against the restraint provided by the graphite overwrap. The high coefficient of thermal expansion material is disposed about a mandrel with a release system therebetween, and with a release system between the material having the high coefficient of thermal expansion and the composite material, and between the graphite fibers and the composite structure. The heating may occur by inducing heat into the assembly by a magnetic field created by coils disposed about the assembly through which alternating current flows. The method permits structures to be formed without the use of an autoclave.

REFERENCES:
patent: 3165569 (1965-01-01), Bright
patent: 4673541 (1987-06-01), Watanabe
patent: 4851280 (1989-07-01), Gupta

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