High-Strength, Lightweight Metal Matrix Composites (MMC) Material for Bridge Applications

Award Information
Agency:
Department of Defense
Branch
n/a
Amount:
$99,816.00
Award Year:
2011
Program:
SBIR
Phase:
Phase I
Contract:
W56HZV-11-C-0297
Award Id:
n/a
Agency Tracking Number:
A111-063-0972
Solicitation Year:
2011
Solicitation Topic Code:
A11-063
Solicitation Number:
2011.1
Small Business Information
35 Corporate Drive, Suite 1110, Trumbull, CT, -
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
3052532
Principal Investigator:
Michael Aghajanian
VP, Product Development
(302) 454-8600
aghajanian@mmmt.com
Business Contact:
Michael Aghajanian
VP, Product Development
(302) 454-8600
aghajanian@mmmt.com
Research Institution:
Stub




Abstract
The Army is in need of an improved material for use in bridge structures. Key requirements are reduced weight relative to current metallic structures (steel and aluminum), high strength, resistance to catastrophic failure, attractive cost, and resistance to environmental factors (weather, corrosion, erosion, extreme temperatures, UV, etc.). To meet this need, the use of macro-composite structures of Al/SiC MMC and steel are proposed. The structures could consist of Al/SiC reinforced with steel (e.g., rebar), or hollow steel structures filled with Al/SiC. Such a product will possess the low weight, high specific stiffness and strength, and excellent corrosion resistance of Al/SiC; together with the resistance to catastrophic failure (i.e., high strain to failure) of steel. A key processing advantage of this system is the ability to match the thermal expansion properties of Al/SiC to steel (by selecting proper Al:SiC ratio), which allows the fabrication of large structural elements without residual stress. A five task Phase I program is proposed, namely (1) design of macro-composite structural elements, (2) finite element analysis of the designs, (3) manufacturing trials, (4) mechanical testing to generate stress-strain behavior and assess failure mode, and (5) development of a cost model.

* information listed above is at the time of submission.

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