Composite flange from braided preform

摘要

A preform sheet for a composite component comprises a body section and a flange section. The preform body section includes a plurality of axial tows braided with at least a plurality of first bias tows and a plurality of second bias tows. The preform flange section includes a first braided flange layer and a second braided flange layer. The first braided flange layer is defined by the first and second braided bias tows of the preform body section extending into the flange section. Neither the first nor second braided flange layers have axial tows.

主权项

1. A fabric preform for a composite component, the fabric preform comprising:
a preform body section including a plurality of axial tows aligned along an axial direction of the preform, the axial tows braided with at least a plurality of first bias tows and a plurality of second bias tows; and a preform flange section including a first braided flange layer and a second braided flange layer, the first braided flange layer defined by the first and second bias tows of the preform body section extending into the preform flange section, neither the first nor second braided flange layers having axial tows; wherein the second braided flange layer comprises biaxially braided fabric with a plurality of third bias tows and a plurality of fourth bias tows; and wherein the plurality of third bias tows are oriented at an angle measuring about 30° relative to an axial direction of the preform, and the plurality of fourth bias tows are oriented at an angle measuring about −30° relative to the axial direction of the preform sheet.