Physics-based Life Prediction Model Incorporating Environmental Effects for SiC/SiC Ceramic Matrix Composites

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: FA8650-11-C-5107
Agency Tracking Number: F093-125-0292
Amount: $750,000.00
Phase: Phase II
Program: SBIR
Awards Year: 2011
Solicitation Year: 2009
Solicitation Topic Code: AF093-125
Solicitation Number: 2009.3
Small Business Information
Multiscale Design Systems, LLC
280 Park Ave South, Apt 22M, New York, NY, -
DUNS: 132023982
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Zheng Yuan
 Chief Technological Offic
 (518) 496-0173
 info@multiscale.biz
Business Contact
 Jacob Fish
Title: President
Phone: (518) 496-0173
Email: jf@multiscale.biz
Research Institution
 Stub
Abstract
MDS, LLC in collaboration with Rolls-Royce, Hyper-Therm HTC, AFIT, University of Akron and Columbia University will develop a validated physics-based long-term deformation and life prediction multiscale-multiphysics design system (M2DS) for advanced ceramic matrix composites under aerospace gas turbine engine environmental conditions. Specifically we will develop deterministic and probabilistic coupled thermo-mechano-oxidation models of degradation, mechanistic thermal fatigue model and CMC optimization toolkit that will enable to find the best approaches for protecting against oxidation depending on the application conditions, such as environment, temperature, stresses and required component lives. M2DS will be validated for two material systems, Chemical Vapor Infiltrated CMC and Melt Infiltrated CMC GEN II, by utilizing AFIT/AFRL burner rig to simulate various combustion and mechanical loading conditions. BENEFIT: Currently, there are at least two CMC components planned for eventual introduction into the F136 engine. This process would be accelerated if there were validated structural assurance tools available to the design community. It would also have a huge cost benefit, not only from the improved performance, but also from the reduced development costs. The current approach to structural assurance is to build an extensive data base covering all potential failure modes, very expensive and time consuming, followed by building components and destructively testing them, costing additional resources. Validated life assurance models would remove much of this cost. It would provide the confidence necessary to accelerate the use of CMC components and to gain the experience that would promote their usage. In addition to the application to military craft, there are a significant number of static CMC components planned for civil application, such as advanced friction systems, in the relatively near future. The development of efficient computational tools for sensitivity analysis, error and uncertainty quantification, and the solution of model calibration inverse problems are critically important to design and decision under uncertainty and is therefore a fundamentally important goal across DOD Agencies and civil applications.

* information listed above is at the time of submission.

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