METHODS FOR MANUFACTURING SUBLAMINATE MODULES AND FORMING COMPOSITE LAMINATED STRUCTURES FROM 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 method of manufacturing a sub-laminate module for use in forming a composite laminate, the method comprising the steps of:
positioning a first ply in a first orientation; positioning a second ply in a second orientation, the second orientation being offset relative to the first orientation such that an acute angle less than 90° is defined; stacking the second ply adjacent the first ply such that an unbalanced structure is formed; and stitching the first ply and the second ply relative to one another in a substantially non-crimped configuration.