Mesh Independent Probabilistic Residual Life Prediction of Metallic Airframe Structures

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$99,993.00
Award Year:
2011
Program:
SBIR
Phase:
Phase I
Contract:
NNX11CG54P
Agency Tracking Number:
104662
Solicitation Year:
2010
Solicitation Topic Code:
A1.03
Solicitation Number:
n/a
Small Business Information
Global Engineering and Materials, Inc
CT, East Lyme, CT, 06333-1303
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
610056405
Principal Investigator:
Jim Lua
Principal Investigator
(860) 398-5620
jlua@gem-consultant.com
Business Contact:
Jim Lua
Business Official
(860) 398-5620
jlua@gem-consultant.com
Research Institution:
Stub




Abstract
Global Engineering and Materials, Inc. (GEM) along with its team members, Clarkson University and LM Aero, propose to develop a mesh independent probabilistic residual life prediction tool for metallic airframe structures. The deterministic solver of this probabilistic analysis tool will be developed by integrating our cutting edge extended finite element toolkit for Abaqus (XFA) with a novel small time-scale fatigue crack growth model for mesh independent fatigue crack growth prediction of a complex airframe structural component subjected to multiaxial and variable amplitude loading. The fast matching and narrow band technique will be implemented to track a curvilinear 3D crack growth without remeshing. Both the versatility and the high computational efficiency will make the XFA an ideal solution model for the probabilistic life prediction where the initial defect shape and location can be treated as random variables without user intervention. After the integration of XFA with a general purpose probabilistic analysis framework (PFA), the resulting probabilistic version of the XFA (PXFA) will enable the following: 1) fatigue reliability assessment of an aging component; 2) evaluation of design variables to meet a targeted reliability level; and 3) provision of operational decision support using SHM data on repair, maintenance, and life extension options.

* 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