Dry preform, annular structure made of a composite material, and manufacturing method for the annular structure
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United States of America Patent
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Nov 1, 2016
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app pub date -
Mar 21, 2012
filing date -
Mar 25, 2011
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Abstract
A first reinforcing fiber layer is formed of reinforcing fibers which are wound around an outer periphery of a mandrel. The reinforcing fibers are aligned in parallel to a direction (+θ direction) in which the reinforcing fibers intersect with an annular direction (0° direction) of the mandrel, and seamlessly continue in the annular direction of the mandrel by an amount of at least one rotation.
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