Textiles: manufacturing – Textile product fabrication or treatment – Fiber entangling and interlocking
Patent
1994-07-25
1996-05-14
Calvert, John J.
Textiles: manufacturing
Textile product fabrication or treatment
Fiber entangling and interlocking
28108, D04H 502
Patent
active
055155855
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 BF Goodrich Company
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