Detecting Crack Nucleation/Damage Mechanisms In Sea-Based Aviation Environments

Award Information
Agency:
Department of Defense
Branch
Navy
Amount:
$149,958.00
Award Year:
2012
Program:
SBIR
Phase:
Phase I
Contract:
N00014-12-M-0233
Award Id:
n/a
Agency Tracking Number:
N121-099-0509
Solicitation Year:
2012
Solicitation Topic Code:
N121-099
Solicitation Number:
2012.1
Small Business Information
3190 Fairview Park Drive, Suite 650, Falls Church, VA, -
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
010983174
Principal Investigator:
Nagaraja Iyyer
Director of Engineers/Fal
(703) 237-1300
niyyer@tda-i.com
Business Contact:
Scott Bradfield
President
(703) 237-1300
sbradfield@tda-i.com
Research Institution:
Stub




Abstract
TDA recognizes the need for analytical formulations for crack nucleation predictions and sensors to detect crack nucleation in environment assisted cracking of Naval aircraft structures. TDA proposes to investigate the role of microstructural damage evolution during pre-crack nucleation and stress field imposition; and methodologies, both electrochemical and electromagnetic, for measuring early response on the development of stress field and initiation of corrosion sensitive zones. This SBIR effort dovetails seamlessly with TDA"s current work with ONR"s UNIGROW-UNICORR program, in addition to the development of sensors for laboratory use as well as for leave-on placements on aircraft. TDA will develop analytical formulations for Navy material-environment systems. The analytical formulations will be incorporated into UNIGROW-UNICORR program to work as a design tool to predict nucleation of cracks in user-selected environment and loading situations. TDA also proposes to develop novel techniques using a combination of DCPD and ECN to detect small cracks. A prototype sensor capable of measuring small micro cracks of 10microns or less in corrosive mediums as well as providing continuous corrosion activity will also be developed. TDA will conduct critical tests using the proposed novel techniques and outline the steps needed for future sensor development.

* information listed above is at the time of submission.

Agency Micro-sites


SBA logo

Department of Agriculture logo

Department of Commerce logo

Department of Defense logo

Department of Education logo

Department of Energy logo

Department of Health and Human Services logo

Department of Homeland Security logo

Department of Transportation logo

Enviromental Protection Agency logo

National Aeronautics and Space Administration logo

National Science Foundation logo
US Flag An Official Website of the United States Government