|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Additive Manufacturing Fatigue and Fracture: Developing Predictive Capabilities
||Candidate Methods to Assess Structural Integrity of Higher-criticality AM Components
||James Sobotka, Robert Craig McClung
|On-Site Speaker (Planned)
This presentation surveys methods to assess the safety of principal structural elements, life-limited parts, and other higher criticality parts manufactured by AM processes. This presentation focuses on parts under cyclic loading that drives fatigue crack growth and fracture in metallic alloys. Here, we consider key features of the structural assessment, provide a consistent terminology, and discuss core concepts that underlie the assessment strategies. Following this background, we discuss possible part requirements on the acceptable limits of flaws produced by AM processes. Based on these considerations, this presentation outline four methods that could be used to demonstrate safe usage: traditional fatigue methods, deterministic damage tolerance, probabilistic Kitagawa diagrams, and probabilistic damage tolerance. We conclude this work by providing an overview of the key enablers that support the usage of the various methodologies.
||Additive Manufacturing, Process Technology,