Composite structure in the form of a disc of knitted carbon fibe

Details Composite structure in the form of a disc of knitted carbon fibe Composite structure in the form of a disc of knitted carbon fibe

1980-01-11

1982-07-27

Bell, James J.

Stock material or miscellaneous articles

Circular sheet or circular blank

Recording medium or carrier

66199, 156148, 188251A, 264 291, 264 292, 264 295, 4234471, 4234472, 427249, 428253, 428254, 428367, 428408, B32B 302

Patent

active

043418309

ABSTRACT:
A composite structure such as an aircraft brake disc has a matrix material reinforced by knitted panels of fabric arranged in a stack. The panels are knitted directly into the desired disc shape so that there is no fabric waste, by knitting a helix of fabric on a flat-bed weft knitting machine having a patterning mechanism which allows shaping and a presser foot or sinkers to hold the knitting down on the needles. The helix of fabric can be closed down to constitute the stack of disc panels directly or it can be separated into discrete disc panels by knitting in draw threads connecting successive windings of the helix. The disc panels may be knitted from oxidised acrylic yarn and then heated to carbonise the yarn. A stack of carbon fibre fabric panels may be embedded in a carbon matrix by carbon vapor deposition to form a brake disc.

REFERENCES:
patent: 3759353 (1973-09-01), Marin
patent: 3761231 (1973-09-01), Dowell et al.
patent: 3859160 (1975-01-01), Marin
patent: 3936552 (1976-02-01), Krupp et al.
patent: 3956548 (1976-05-01), Kovac et al.
patent: 3991248 (1976-11-01), Bauer
patent: 3993817 (1976-11-01), Schultz
patent: 4155432 (1979-05-01), Krause
patent: 4193252 (1980-03-01), Shepherd et al.
"Relationship Between Structure and Strength for CVD Carbon Infiltrated Substrates" Kotlensky and Bauer, 1970.

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