Corrosion Resistant Naval Alloys: Innovative Multi-Scale Computational Modeling and Simulation Tools

Award Information
Agency:
Department of Defense
Branch
n/a
Amount:
$749,368.00
Award Year:
2011
Program:
SBIR
Phase:
Phase II
Contract:
N00014-11-C-0078
Award Id:
n/a
Agency Tracking Number:
O2-0990
Solicitation Year:
2009
Solicitation Topic Code:
OSD09-C01
Solicitation Number:
2009.1
Small Business Information
750 Old Hickory Blvd, Bldg. 2, Suite 270, Brentwood, TN, -
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
128193997
Principal Investigator:
Robert Tryon
CTO
(615) 372-0299
rtryon@vextec.com
Business Contact:
Loren Nasser
President, CEO
(615) 372-0299
lnasser@vextec.com
Research Institution:
Stub




Abstract
Advanced computational tools capable of predicting the effects of fatigue corrosion on new alloys are needed to design the aircraft fleet of the future. The corrosion process is complex involving a combination of factors including material chemistry, processing history, microstructure, and operational environment. During the Phase I, VEXTEC demonstrated physics based corrosion pit nucleation model integrated within a probabilistic fatigue model to predict the corrosion influence on fatigue. VEXTEC simulated an aircraft under-wing panel made of Al 7075 under realistic mission loads and showed that corrosion reduced the fatigue life by 33%. The Phase II will fully develop this capability into a prototype design tool. The corrosion model will be extended to include pit formation, annodic dissolution and embrittlement for both Al 7075 and Al7050 materials. Under Phase IIB the capability will be further extended to predict Al2024 behavior. It will be shown that a prototype software can be used to predict design influence factors on a realistic Navy component.

* information listed above is at the time of submission.

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