|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Additive Forming of Components - Tailoring Specific Material Properties in Low Volume Production
||Reliability-Based Methods for Rapid Certification of Metal Additive Manufactured Parts
||Sanjeev Kulkarni, Robert Tryon, Animesh Dey
|On-Site Speaker (Planned)
VEXTEC has worked with several manufactures to developed methods for rapid certification of metal additive manufactured (AM) parts. The methodology integrates process information, material properties and damage tolerance to predict fatigue durability. Total fatigue lifetime including initiation and small and long crack growth is considered. Computational microstructural material models along with laboratory test data are integrated into the AM design certification process. Fatigue test specimens are modeled using probabilistic finite element analysis. The specimens can be simple geometry or near net shape. Statistical distributions describe the geometry, surface roughness and material microstructure including grains, voids and particle inclusions. The spatial non-uniformity and the machine path dependent layering of the microstructure are modeled. The method uses Monte Carlo simulation to predict the statistical distribution of fatigue lifetimes that is observed from testing a large population of specimens. Several applications to an aircraft structural component will be highlighted.
||Planned: A print-only volume