Innovative Approaches to Flaw-Tolerant Design and Certification of Airframe Components

Award Information
Agency:
Department of Defense
Branch
Navy
Amount:
$449,973.00
Award Year:
2010
Program:
SBIR
Phase:
Phase II
Contract:
N68335-10-C-0428
Agency Tracking Number:
N082-131-0118
Solicitation Year:
n/a
Solicitation Topic Code:
NAVY 08-131
Solicitation Number:
n/a
Small Business Information
Engineering Software Research & Developm
111 West Port Plaza, Suite 825, St. Louis, MO, 63146
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
859454886
Principal Investigator:
Barna Szabo
President
(314) 744-5021
barna.szabo@esrd.com
Business Contact:
Barna Szabo
President
(314) 744-5021
barna.szabo@esrd.com
Research Institution:
n/a
Abstract
The development of a procedural and computational framework for improved prediction of damage accumulation caused by cyclic loading in metallic airframe components is proposed. This framework will be based on the idea that models formulated for the prediction of crack nucleation, i.e., for the purpose of supporting flaw tolerance analysis, and models formulated for the prediction of crack growth, i.e., for the purpose of supporting damage tolerance analysis, are similar in the following sense: In both cases the physical events of interest; crack nucleation and crack growth, are highly nonlinear processes that occur on length scales less than about 0.5 mm for metals used in airframes and are controlled by stress and strain fields computable from mathematical models based on small strain and small deformation theory. Therefore the driving force for damage accumulation can be correlated with functionals that depend on models based on small strain theory. The problem is to identify the functionals that reliably correlate predicted and observed damage accumulation events. The proposed procedural and computational framework will be designed to support this effort.

* 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