Integrally 3D Woven/3D Braided Composite Joining Elements For Ship Construction

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N65538-04-M-0118
Agency Tracking Number: N041-093-0325
Amount: $100,000.00
Phase: Phase I
Program: SBIR
Awards Year: 2004
Solicitation Year: 2004
Solicitation Topic Code: N04-093
Solicitation Number: 2004.1
Small Business Information
109 MacKenan Drive, Cary, NC, 27511
DUNS: 030936335
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Mansour Mohamed
 Chief Scientific Officer
 (919) 481-2500
Business Contact
 Andrew Watson
Title: Controller/Corp Secretary
Phone: (919) 481-2500
Research Institution
GFRP cored panels are common in current shipboard structure design. Robust and practical means of joining these and other composite materials to one another and to any substructure are critical to forming large structures. 3TEX will develop and test joining methods and materials based on 3WEAVETM, and 3BRAIDTM, formation of integral shaped fabric preforms. "Butt" and "T" joints formed by insertion of panel edges into pockets in, "H", "T", and "double T" union elements. Investigation will examine rigid, pre-impregnated, and dry preforms. Use of the dry preforms allows the easiest storage by employing subsequent infusion of the joint preforms with the panels in-place, to bind all elements together. Variants that provide through-joint holes for fastening to sub-structures will also be examined. Further, composite insert and hard points, which exploit the increased through thickness fiber, and thread strengths of "very" thick single ply fabric preforms will also be demonstrated. The strengths of inter-panel, and hard point joints will be gauged against existing methods. The cost, and practicality of these methods and materials will be assessed. It is expected that these methods will prove both more practical, more robust, and lower cost than current methods.

* information listed above is at the time of submission.

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