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Reliability Algorithms for Corrosion Fatigue

Award Information

Department of Defense
Office of the Secretary of Defense
Award ID:
Program Year/Program:
2002 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
STITechnologies, Inc.
1800 Brighton-Henrietta Town Line Road Rochester, NY 14623-0250
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Phase 2
Fiscal Year: 2002
Title: Reliability Algorithms for Corrosion Fatigue
Agency / Branch: DOD / OSD
Contract: F33615-03-C-3303
Award Amount: $750,000.00


In this Phase II SBIR project, STI Technologies will team with APES Inc., with strong support from Lockheed-Martin Co. and Boeing Phantom Works, to develop an advanced predictive technology for USAF aging aircraft components subjected to corrosion-fatigue.The proposed work combines state-of-art stochastic modeling techniques with physics-based models of progressive corrosion-fatigue The final product of Phase II will be an integrated software system (Probabilistic Corrosion FAtigue, ProCORFA) that rapidlyperforms accurate component reliability and life-cycle cost analyses for military aging aircraft. To adequately approach the corrosion-fatigue damage phenomenon and take advantage of current USAF technology, ProCORFA will interface with ECLIPSE and AFGROWcodes. Phase I demonstrated the reliability algorithms for B707 lap joint design, including maintenance uncertainties (inspection, replacement and repairs). In Phase II, several aircraft component types subjected to different corrosion types will beinvestigated in detail. Based on the computed risks and maintenance event costs, an optimal-cost maintenance strategy for aging components can be determined. The ProCORFA software can also be used to compare different designs in terms of risks and costs,or to perform "what-if analyses" to evaluate the effects of different design and/or maintenance strategy modifications on component failure risks, remaining life and induced costs.

Principal Investigator:

Dan Ghiocel
V.P. Advanced Engineering

Business Contact:

Timothy Nichols
Small Business Information at Submission:

Sti Technologies
1800 Brighton-Henrietta Townline Road Rochester, NY 14623

EIN/Tax ID: 161578599
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No