Software for the Design and Certification of Unitized Airframe Components

Award Information
Agency:
Department of Defense
Branch
Air Force
Amount:
$99,302.00
Award Year:
2005
Program:
STTR
Phase:
Phase I
Contract:
FA9550-05-C-0085
Agency Tracking Number:
F054-015-0193
Solicitation Year:
2005
Solicitation Topic Code:
AF05-T015
Solicitation Number:
n/a
Small Business Information
VEXTEC CORP.
750 Old Hickory Blvd, Building 2, Suite 270, Brentwood, TN, 37027
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
128193997
Principal Investigator:
Robert Tryon
CTO
(615) 372-0299
rtryon@vextec.com
Business Contact:
Loren Nasser
COO
(615) 372-0299
Lnasser@vextec.com
Research Institution:
SRI INTERNATIONAL
Donald Shockey
333 Ravenswood Ave
Menlo Park, CA, 94025
(650) 859-2587
Domestic nonprofit research organization
Abstract
This SBIR Phase I will demonstrate the feasibility for a unitized component structural design tool that allows for holistic risk assessment. The analysis will transform the FEA predicted stress (or strain) state into fully probabilistic assessment of uncertainty in geometry and loading throughout the component. Thereafter the design tool will conduct probabilistic microstructural damage accumulation modeling to predict the material degradation or damage state evolution throughout the component. During Phase I, it will be shown that the IDA can be used to establish the criteria for inspection intervals as well as determine the most cost effective fabrication processes. One of the primary drivers of the cost of fabrication is manufacturing tolerance control. The statistical variation of the part's configuration serves as the input to IDA. Thus, the different combinations of allowable variations in the component's configuration can be determined based on the allowable risk of component failure. The effect of the variation in geometry, microstructure, residual stress state and their influences on each other are assessed in the robust analysis. Finally it will be shown how the envisioned IDA can be used directly for Certification by Analysis.

* information listed above is at the time of submission.

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