Textiles: manufacturing – Warp preparing or handling – Machine replenishing
Patent
1995-06-07
1996-04-09
Calvert, John J.
Textiles: manufacturing
Warp preparing or handling
Machine replenishing
28111, 28107, B32B 506, D04H 146, D04H 310, D04H 502
Patent
active
055049796
ABSTRACT:
The invention relates to the field of needling processes for forming fibrous preform structures. The invention is particularly useful in forming fibrous preform structures suitable for subsequent processing into high temperature resistant composite structures such as carbon/carbon aircraft brake disks. The process according to the invention compensates for fiber pull back induced by fiber resilience, and for compaction in previously needled layers induced during subsequent needling passes. According to a further aspect of the invention, Z-fiber distribution throughout the thickness of the fibrous preform structure may be manipulated as necessary to achieve a desired distribution.
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Liew Ronnie S.
Sheehan Philip W.
Calvert John J.
Leffel Kevin L.
The BFGoodrich Company
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