Method of fabricating lightweight honeycomb structures

Details Method of fabricating lightweight honeycomb structures Method of fabricating lightweight honeycomb structures

1990-12-12

1992-09-29

Gorski, Joseph M.

Metal working

Method of mechanical manufacture

Assembling or joining

29457, 156 89, 428116, B23P 1904

Patent

active

051505070

ABSTRACT:
A process is disclosed for fabricating lightweight honeycomb type structures out of material such as silicon carbide (SiC) and silicon (S). The lightweight structure consists of a core to define the shape and size of the structure. The core is coated with an appropriate deposit such as SiC or Si to give the lightweight structure strength and stiffness and for bonding the lightweight structure to another surface. The core is fabricated from extremely thin ribs of appropriately stiff and strong material such as graphite. First, a graphite core consisting of an outer hexagonal cell with six inner triangular cells is constructed from the graphite ribs. The graphite core may be placed on the back-up side of a SiC faceplate and then coated with SiC to produce a monolithic structure without the use of any bonding agent. Cores and methods for the fabrication thereof in which the six inner triangular cells are further divided into a plurality of cells are also disclosed.

REFERENCES:
patent: 3507737 (1970-04-01), Busdiecker et al.
patent: 4578303 (1986-03-01), Kundinger et al.
patent: 4716064 (1987-12-01), Holzl et al.
patent: 4917934 (1990-04-01), Sempolinski
patent: 4956217 (1990-09-01), Heitkamp

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