| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing Fatigue and Fracture IV: Toward Confident Use in Critical Applications
|
| Presentation Title |
Maximizing the Fatigue Lifetime by Choosing the Best Build Orientation |
| Author(s) |
Amin S. Azar, Magnus Reiersen, Even W. Hovig, Mikkel M. Pedersen |
| On-Site Speaker (Planned) |
Amin S. Azar |
| Abstract Scope |
Affected by the slicing conditions, the as-built surfaces of the additively manufactured components will have staircase effect. This indigenous surface topography creates local stress concentrations, directly influencing the fatigue lifetime.
For this purpose, we have developed a new algorithm that shrink-wraps a finely triangulated surface on the designed part and analyzes the relative angle of all the surface patches to find the optimum part positioning provisions on the build platform towards minimization of surface stress concentrations.
The model was calibrated by the experimental data through a novel white light interferometry (WLI) method. The entire procedure was implemented in the open source "Fatlab" toolbox to provide the first-in-class fatigue analysis code that takes the surface conditions into account when calculating the fatigue life of AM components. The calculated results show that the fatigue life of any as-built AM component can be improved by as much as 30% using this procedure. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |