Design Tools for Fatigue Life Prediction in Surface Treated Aerospace Components Navy SBIR FY2005.1 Sol No.: Navy SBIR FY2005.1 Topic No.: N05-026 Topic Title: Design Tools for Fatigue Life Prediction in Surface Treated Aerospace Components Proposal No.: N051-026-1210 Firm: Research Applications, Inc. 11772 Sorrento Valley Road Suite 260 San Diego, California 92121-1036 Contact: Jalees Ahmad Phone: (858) 259-7541 Web Site: home.att.net/~raisd01 Abstract: A methodology and software for life prediction of surface treated components is sought to complement existing life prediction technology. An innovative approach with high probability of success is proposed. The proposed modeling framework is based on a recent promising approach developed by Research Applications, Inc. (RAI) that has captured the attention of several military aerospace and commercial heavy equipment manufacturers. In Phase I, RAI's mechanics based model and framework will be validated using test data on surface treated specimens of the titanium alloy Ti-6Al-4V. The framework will be designed for further development in Phase II as a stand-alone software product for marketing to the commercial sector and as a plug-in to design codes used by the JSF Program and other Navy Prime Contractors. The proposed model will also benefit Navy's general prognostic methods developments related to structural health monitoring. Benefits: The need for a life prediction model for surface treated goes well beyond military and aerospace engines and structures. A much broader market exists in several mechanical equipment industries such as automotive, heavy equipment, and ship structures. The proposed product will have an immediate and broad market. Return