Integrally Bladed Rotor (IBR) Sustainment

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: FA8650-07-M-2767
Agency Tracking Number: F071-176-2381
Amount: $99,996.00
Phase: Phase I
Program: SBIR
Awards Year: 2007
Solitcitation Year: 2007
Solitcitation Topic Code: AF071-176
Solitcitation Number: 2007.1
Small Business Information
VEXTEC CORP.
750 Old Hickory Blvd, Building 2, Suite 270, Brentwood, TN, 37027
Duns: 128193997
Hubzone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Richard Holmes
 Mgr M&S
 (615) 372-0299
 rholmes@vextec.com
Business Contact
 Loren Nasser
Title: CEO
Phone: (615) 372-0299
Email: Lnasser@vextec.com
Research Institution
N/A
Abstract
Integrally bladed rotors (IBRs) have become prevalent in new military gas turbine engines. IBRs replace rotors with inserted blades. As with other types of unitized structures, IBRs greatly reduce part count and thus improve assembly and maintainability. This SBIR proposes innovative advanced physics based life modeling techniques to accurately determine the probability of failure of undamaged, damaged and repaired IBRs. System reliability techniques will be developed that recognize that an IBR is an advanced component with many geometric complexities and many active failure mechanism. Because the IBR is a single piece of hardware, the loading and failure mechanism at different locations on the IBR are not independent and can’t be treated that way during life analysis. VEXTEC has developed patented system reliability methods to assess the risk of failure of complex machines such as automobiles and heavy machinery. These methods will be extended to IBRs. Validation testing will performed to verify the analysis methods. . The ultimate goal of this SBIR will be to show that a modeling method can be established to predict the life of a repaired IBR with a high degree of accuracy. VEXTEC will conduct both computational IBR modeling and scaled physical testing within Phase I Uniquely, VEXTEC has developed and constructed a scaled turbine test rig which will be used to prove-out modeling feasibility through direct comparison with an IBR that was fielded and then repaired and then returned to the field until failure.

* information listed above is at the time of submission.

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