Composite laminated structures and methods for manufacturing and using the same

摘要

Variously configured sub-laminate modules are provided, which comprise at least a first ply and a second ply, the first ply comprising fibers extending in a first orientation, the second ply comprising fibers extending in a second orientation. The second orientation is offset relative to the first orientation, which offset defines an acute angle between the two orientations. The acute angle is less than 90 degrees and in at least one embodiment, the acute angle is approximately 25°. In certain embodiments, the acute angle further defines an unbalanced structure of the sub-laminate module. In certain embodiments, the first and second plies may be further secured relative to one another in a non-crimped configuration. Composite laminated structures formed from various embodiments of the sub-laminate modules are also provided, at least some of which may be homogenized. Various methods of manufacturing the sub-laminate modules and the composite laminated structures are also provided.

主权项

1. A sub-laminate module for use in forming a composite laminated structure, the sub-laminate module consisting of:
a primary longitudinal axis corresponding to a primary load-bearing axis of the sub-laminate module; a first ply comprising fibers extending in a first orientation; a second ply comprising fibers extending in a second orientation, the second orientation being offset relative to the first orientation; and an acute angle defined by the relative offset between the first orientation and the second orientation, the acute angle being less than 90° and defining an unbalanced structure of the sub-laminate module, wherein:
the first orientation is aligned with the primary longitudinal axis of the sub-laminate module such that the first ply is aligned with the primary load-bearing axis of the sub-laminate module;the second orientation is offset relative to the first orientation and the primary longitudinal axis such that the relative offset corresponds to the acute angle and defines the unbalanced structure of the sub-laminate module; andthe first ply and the second ply are secured relative to one another via a plurality of transversely oriented stitches, the plurality of transverse stitches being oriented substantially perpendicular relative to the primary longitudinal axis of the sub-laminate module so as to at least in part define a non-crimped configuration.