Multilayer woven fibrous structure including a hollow tubular part, production method thereof and composite part comprising same
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United States of America Patent
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Jan 10, 2017
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N/A
app pub date -
Jan 13, 2012
filing date -
Jan 21, 2011
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Abstract
A fiber structure made as a single piece by multilayer weaving using a method including weaving warp yarns of at least a first set of layers of warp yarns with weft yarns including at least some that are woven with extra length so as to have warp yarn end portions available that extend beyond the zone of weaving, the warp yarn end portions being returned to be woven with warp yarns by being reinserted in layers of warp yarns, and a hollow, or tubular, portion being formed by looping the first woven set of layers of warp yarns back onto itself and applying traction to the ends of the reinserted weft yarns so that a fiber preform for a part including a hollow portion can be obtained as a single piece.
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