| About this Abstract |
| Meeting |
2019 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2019)
|
| Symposium
|
2019 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2019)
|
| Presentation Title |
Fatigue Life Prediction of Additive Manufactured Materials Using a Defect Sensitive Model |
| Author(s) |
Muztahid Muhammad, Patricio E. Carrion, Nima Shamsaei |
| On-Site Speaker (Planned) |
Patricio E. Carrion |
| Abstract Scope |
This study aims to utilize a defect sensitive fatigue model based on a fracture mechanics concept to predict fatigue life of 17-4 precipitation hardening (PH) stainless steel (SS) and Ti-6Al-4V fabricated using laser beam powder bed fusion (LB-PBF) process. Size of defects such as lack of fusions and gas entrapped pores are captured using fractography analysis and calculated employing √area method using Murakami approach. Considering the value of √area determined from the Murakami approach as initial crack length, fatigue life is then calculated using NASGRO software and compared to the experimental data obtained from strain-controlled fatigue testing. A comparison between predicted fatigue lives using NASGRO software combined with the Murakami approach, and experimentally obtained ones will be presented to determine the applicability of the utilized model for predicting the fatigue performance of additive manufactured materials. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |