Modeling of Residual Stress and Machining Distortion in Aerospace Components (PREPRINT)
AIR FORCE RESEARCH LAB WRIGHT-PATTERSON AFB OH MATERIALS AND MANUFACTURING DIRECTORATE
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The insertion of new materials into aircraft systems takes several years and many millions of dollars. Experimental trials to define the manufacturing process to meet the specifications can add significant time and cost. Many military programs have small lot production in either initial engine development programs or specialized production, providing additional criticality to improving the First Time Yield FTY of manufacturing processes, and quickly resolving production issues. Additionally, the impact of an unintended process change is unknown without evaluating the component, again adding time and cost to issue resolution. Therefore, new approaches are required to facilitate the rapid certification of materials and processes technologies. Significant improvements in manufacturing processes have been realized by process modeling tools such as DEFORMTrademark and FORGE for metal forming and ProcastTrademark for casting, which are now in routine industrial use.
- Fabrication Metallurgy