3 Dimensional (3D) Braiding of Non-Uniform Solid Cross Sections

Award Information
Agency:
Department of Defense
Branch:
Navy
Amount:
$999,874.00
Award Year:
2013
Program:
SBIR
Phase:
Phase II
Contract:
N68335-13-C-0165
Agency Tracking Number:
N112-124-1081
Solicitation Year:
2011
Solicitation Topic Code:
N112-124
Solicitation Number:
2011.2
Small Business Information
DE Technologies Inc.
100 Queens Drive, King of Prussia, PA, 19406
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
87-759-92
Principal Investigator
 Hoa Lam
 Senior Research Engineer
 (610) 337-2800
 lam@detk.com
Business Contact
 Robert Ciccarelli
Title: Vice President, Engineeri
Phone: (610) 337-2800
Email: ciccar@detk.com
Research Institution
 Stub
Abstract
An innovative"4StepPlus"three-dimensional braiding method is proposed for fabricating composite fiber preforms having solid, non-uniform cross sections. The method allows braid unit cells to be individually activated and deactivated after each braiding cycle for applications where changes in part cross section require the addition or removal of yarns. For parts having a cross section that changes in shape while maintaining a similar area, yarns may be moved in any of four directions to simply relocate them to new positions within the integral braid. The ability to incorporate interlocking yarns in two directions enhances the preform's integrity during handling and subsequent processing. Compactness of machinery and high carrier density reduce fiber damage and maintain uniform braid density throughout the part's cross section. The flexible apparatus can be modularly built up in differing complexities, thus keeping costs low. In Phase I, a prototype braider was developed to fabricate prototype fiber preforms demonstrating the ability to change cross-sectional area and shape. In Phase II, we will continue development of our method and machine, and demonstrate fabrication and development of a ceramic-matrix composite fastener with a variable cross section.

* information listed above is at the time of submission.

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