| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing Fatigue and Fracture IV: Toward Confident Use in Critical Applications
|
| Presentation Title |
Deriving the Structural Fatigue Behavior of Additive Manufactured Components |
| Author(s) |
Rainer Wagener, Matthias Hell, Matilde Scurria, Thilo Bein |
| On-Site Speaker (Planned) |
Rainer Wagener |
| Abstract Scope |
Additive manufacturing technologies of metals are known to be time consuming and they usually lead to inhomogeneous microstructures. In order to consider the property gradients within a numerical fatigue approach, appropriate material properties ,describing the local cyclic material behavior, are required. Small-scaled specimens are useful for deriving suitable properties, if test facilities with a high resolution and reproducibility are available.
A combination of piezo ceramic driven test rig, which enables the performance of stress-controlled fatigue test with high frequencies, and an E-Cylinder test rig, designed for low frequency strain-controlled fatigue tests, are used for the derivation of the Fatigue Life Curve, a continuous Wöhler-curve from Low Cycle Fatigue up to the Very High Cycle Fatigue regime, and the cyclic stress-strain behavior of representative structure elements. Additionally using Incremental Step Tests, the cyclic structural behavior could be derived and successively implemented in the performance of a numerical fatigue life approach. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |