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Software for the Design and Certification of Unitized Airframe Components

Award Information

Department of Defense
Air Force
Award ID:
Program Year/Program:
2005 / STTR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
VEXTEC Corporation
PO Box 2287 Bldg. 2, Suite 270 Brentwood, TN 37024-
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Phase 1
Fiscal Year: 2005
Title: Software for the Design and Certification of Unitized Airframe Components
Agency / Branch: DOD / USAF
Contract: FA9550-05-C-0085
Award Amount: $99,302.00


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.

Principal Investigator:

Robert Tryon

Business Contact:

Loren Nasser
Small Business Information at Submission:

Vextec Corp.
750 Old Hickory Blvd, Building 2, Suite 270 Brentwood, TN 37027

EIN/Tax ID: 582529317
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Research Institution Information:
333 Ravenswood Ave
Menlo Park, CA 94025
Contact: Donald Shockey
Contact Phone: (650) 859-2587
RI Type: Domestic nonprofit research organization