Development of Atomistically-Informed Peridynamics Framework for Corrosion Fatigue Damage Prediction

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N68335-13-C-0343
Agency Tracking Number: N13A-007-0144
Amount: $79,875.00
Phase: Phase I
Program: STTR
Awards Year: 2013
Solicitation Year: 2013
Solicitation Topic Code: N13A-T007
Solicitation Number: 2013.A
Small Business Information
PA, Lancaster, PA, 17601-5688
DUNS: 126288336
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Tapan Desai
 Lead Engineer
 (717) 295-6817
Business Contact
 Frank Morales
Title: Accounting Clerk
Phone: (717) 295-6092
Research Institution
 Florida State University
 Max Gunzburger
 600 W. College Avenue
Tallahassee, FL, 32306-
 (850) 644-7060
 Nonprofit college or university
Corrosive environments together with cyclic loading can lead to the formation of localized corrosion pits and corrosion fatigue cracks, which can significantly deteriorate the structural integrity of aircraft components. The exact nature of corrosion fatigue damage is dependent on the competing multi-scale processes resulting from complex interactions between the structural material, its environment, local microstructure and mechanical variables. In order to assess the durability and integrity of aircraft components (especially of aging fleet) there is a need to develop new theoretical models which can predict corrosion fatigue damage by accounting the interactions between the multi-scale phenomena. In this work, ACT together with Florida State University proposes to develop a Peridynamics framework which could accurately predict the corrosion fatigue processes across different length scales. The modeling approach is based on novel coupling methodologies between atomistic process, microstructural changes and Peridynamics theory. The resulting computational framework will enable prediction of corrosion fatigue life in naval aircraft components exposed to different corrosive environments during their service life.

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

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