Fiber preform for a turbine ring sector, and its method of fabrication
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United States of America Patent
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Feb 28, 2017
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app pub date -
Mar 1, 2011
filing date -
Mar 2, 2010
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Abstract
A fiber preform for a turbine ring sector obtained by three-dimensional weaving and including a base-forming first portion, two tab-forming L-shaped portions each presenting two branches, two ends of the first portion being extended by respective ones of the first branches, and a second portion connecting together the two tabs, first and second strips woven together forming the first branches, a first fraction of the thicknesses of the second branches, and the first portion, there being a non-linked zone between them that is situated in the first branches and in the first portion, and a third woven strip forming the second portion and a second fraction of the thickness of the second branches of each of the tabs.
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