Multi-Objective Optimization and Inverse Design of Corrosion-Resistant Aluminum Alloys

Award Information
Agency:
Department of Defense
Branch
Navy
Amount:
$69,821.00
Award Year:
2008
Program:
STTR
Phase:
Phase I
Contract:
N68335-08-C-0325
Award Id:
85139
Agency Tracking Number:
N08A-010-0063
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
The Millennium Centre, R.R. 1, Box 100B, Triadelphia, WV, 26059
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
101582922
Principal Investigator:
G. Murty
Senior Materials Engineer
(304) 547-5800
gsm@trl.com
Business Contact:
Brian Joseph
President, COO
(304) 547-5800
bej@trl.com
Research Institution:
FLORIDA INTERNATIONAL UNIV.
Roberto Gutierrez
Office of Sponsored Research
11200 S.W. 8th Street, MARC 43
Miami, FL, 33199
(305) 348-2494
Nonprofit college or university
Abstract
The objective of proposed Phase I study is to demonstrate feasibility of alloy design for corrosion resistance of aircraft aluminum alloys via the computational optimization route. The basic methodology involves the use of experimental corrosion data of relevant alloys over a wide range of compositions as input data. Optimization algorithm will be availed for optimization of alloy composition that will result in maximum corrosion resistance and tensile strength simultaneously. The multi-objective evolutionary optimization software packages at Florida International University have the capability to deal with various alloy design applications. Because of lack of availability of appropriate input data, the optimization will focus on concentrations of alloying elements and objectives to include corrosion resistance, tensile strength, weight and cost. Considering high-strength aircraft aluminum alloys, the type of corrosion of interest is Stress Corrosion Cracking (SCC). The optimization predictions will be experimentally validated in Phase II. The evolutionary optimization approach minimizes the effort needed for alloy design by avoiding the large volume of experimentation that is characteristic of conventional alloy development, and it guarantees the mathematically best possible solutions.

* information listed above is at the time of submission.

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