About this Abstract |
Meeting |
MS&T24: Materials Science & Technology
|
Symposium
|
Computational Materials for Qualification and Certification
|
Presentation Title |
Towards a Digital Twin for Qualification and Certification of Metals Additive Manufacturing |
Author(s) |
Anthony D. Rollett, Somnath Ghosh |
On-Site Speaker (Planned) |
Anthony D. Rollett |
Abstract Scope |
The NASA-supported Institute for Qualification and Certification of Metals Additive Manufacturing (IMQCAM) has been stood up to develop a digital twin that covers the space from feedstock through printing and processing to performance under fatigue loading. By performing uncertainty quantification (UQ) across the modeling chain, the objective is to provide a unified set of computational tools to the aerospace community that accelerate qualification and certification. Several components will be described in the symposium. This will focus on the integration of several components for process modeling, such as heat flow for temperature histories, grain-scale microstructure in the two alloys of interest Ti-6Al-4V, and analysis. The proposed interface to the micro-mechanical modeling will be described with examples of microstructural characteristics and constitutive properties. For example, critical resolved shear stress values are needed for fatigue modeling but have to be inferred from macroscopic stress-strain behavior informed by texture. |