| 摘要 |
Woven preforms, for example those used for jet aircraft engine fancases, may need additional stiffeners (502, 503) to improve the strength and/or dynamic performance of the preform assembly, as well as to serve as attachment points. The present invention describes a woven preform that include circumferential or axial stiffenersThe woven incorporates bifurcations in one or more layers (501) of an outermost wrap of a multi-layer fabric (202, 203, 204) composite that forms a preform, wherein the bifurcated outer wrap is folded to form stiffeners that may be oriented circumferentially or axially. |
