Hollow ceramic matrix composite article, mandrel for forming hollow ceramic matrix composite article, and method for forming hollow ceramic matrix composite article
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United States of America Patent
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Jun 25, 2019
Grant Date -
Feb 15, 2018
app pub date -
Aug 15, 2016
filing date -
Aug 15, 2016
priority date (Note) -
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status (Latency Note)
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Abstract
A hollow CMC article, a mandrel for forming the article and a method for forming the article are disclosed. The article includes a ply-wrap layer defining a cavity. The ply-wrap layer includes a first face, a second face, a root portion bridging the faces, and a plurality of CMC wrap plies. The root portion defines a terminus of the ply-wrap layer including a cross-sectional conformation consisting of a curve having a single turning point. Each of the plurality of CMC wrap plies are disposed along the first face, wrap over the root portion, and extend along the second face. The hollow article further includes a plurality of CMC lateral plies disposed along the faces.
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