Military Gas Turbine Engine High-Cycle Fatigue (HCF) Mitigation

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N68335-06-C-0028
Agency Tracking Number: N041-009-1387
Amount: $1,192,240.00
Phase: Phase II
Program: SBIR
Awards Year: 2005
Solicitation Year: 2004
Solicitation Topic Code: N04-009
Solicitation Number: 2004.1
Small Business Information
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
 Robert Tryon
 (615) 372-0299
Business Contact
 Loren Nasser
Title: COO
Phone: (615) 372-0299
Research Institution
The proceedings from the 16 August 1999 HCF Probabilistics Steering Committee meeting indicate that material behavior is a leading root cause of HCF problems in blades, vanes, and seals. A conventionally used component lifing practice is to conduct a Goodman type analysis to estimate the resistance to HCF failure. However the true resistance of a component to HCF loading is dependent on the steady and vibratory stress gradients and the stressed volume of material. Because Goodman diagrams are based on specimens of simple geometry that do not have the same stress gradients as the component, the Goodman diagram provides only a rough estimate of fatigue response. This SBIR will build on an existing VEXTEC material fatigue response model, MICRO (microstructural-based probabilistic fatigue analysis), to properly account for the multi-scale aspect of early fatigue damage that drives the scatter in fatigue response. The ultimate SBIR objective will be to develop capability for accurately predicting HCF damage effects for a complex component (JSF 1st stage fan blade) based on a minimal amount of simple. In effect, this product will be a computationally efficient Goodman analysis that will allow for accelerated design analysis, redesign avoidance, less testing and minimal build-in design conservatism.

* 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
Environmental Protection Agency logo
National Aeronautics and Space Administration logo
National Science Foundation logo
US Flag An Official Website of the United States Government