|About this Abstract
||2021 TMS Annual Meeting & Exhibition
||Additive Manufacturing Fatigue and Fracture V: Processing-Structure-Property Investigations and Application to Qualification
||State-of-the-Art in Predicting Fatigue Life for Applications in Metal-based Additive Manufacturing
||Newell Moser, Orion Kafka, Jake Benzing, Nicholas Derimow, Nik Hrabe, Edward Garboczi
|On-Site Speaker (Planned)
Based on today’s understanding and process control for metal AM, designers should expect performance aspects to vary from part-to-part and machine-to-machine. Hence, there has not been much success in utilizing AM for safety critical applications. This work aims to highlight the strengths and weaknesses of the current state-of-the-art in predicting fatigue life, while also bearing in mind the unique challenges associated with metal AM. An overview will be given on the difficulties of experimentally characterizing fatigue. Additionally, both analytical and computational approaches towards modeling fatigue life will be discussed, as well as strategies to link experimental data to these types of fatigue life models. Furthermore, we will introduce our current work at NIST to predict fatigue life in metal AM using computational mechanics, which includes a model based on continuum damage mechanics.