Multi-Material Structures

Award Information
Agency: Department of Defense
Branch: Defense Advanced Research Projects Agency
Contract: N10PC20073
Agency Tracking Number: 09SB3-0016
Amount: $98,999.00
Phase: Phase I
Program: SBIR
Awards Year: 2010
Solicitation Year: 2009
Solicitation Topic Code: SB093-001
Solicitation Number: 2009.3
Small Business Information
9063 Bee Caves Road, Austin, TX, 78733
DUNS: 625120902
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Harry Perkinson
 Principal Investigator
 (512) 263-2101
 hperkinson@tri-austin.com
Business Contact
 Monte Fellingham
Title: Contracts Administrator
Phone: (512) 263-2101
Email: mfellingham@tri-austin.com
Research Institution
N/A
Abstract
The use of graphite fiber reinforced composite materials in Navy ship applications has a number of potential benefits that can be attributed to the material’s high specific strength and stiffness. However, graphite fiber can form a galvanic cell with the steel structure, especially at the joints between the composite and steel, promoting corrosion that degrades both the composite and the steel. Texas Research Institute Austin, Inc. (TRI/Austin) has a proven COTS technology for preventing galvanic corrosion between dissimilar metals in marine applications that is based on the use of a dielectric barrier in the joint. This TRI/Austin patented technology offers a means to produce a lightweight, corrosion resistant, structurally robust graphite composite-to-steel joint. The technology is readily adapted to the manufacture of adhesive or mechanical composite-to-steel joints. Mechanical fasteners can be corrosion proofed as well. In that galvanic corrosion is a major cause of failure in adhesively bonded metals, the proposed technology can lead to robust, durable adhesive composite-to-metal joints for ship applications. The use of the proposed technology will permit the extensive use of graphite reinforced composite material structures on Navy vessels without the concern for galvanic corrosion between the graphite fiber and the ship’s steel.

* Information listed above is at the time of submission. *

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