About this Abstract |
Meeting |
2021 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2021)
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Symposium
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Materials
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Presentation Title |
Strain Energy Approach to Estimating Stress-life and Strain-life Behavior of Additive Manufactured Austenitic Stainless Steels |
Author(s) |
Jonathan W. Pegues, Seungjong Lee, Nima Shamsaei |
On-Site Speaker (Planned) |
Jonathan W. Pegues |
Abstract Scope |
The unpredictable fatigue behavior of additive manufactured (AM) metals has limited their widespread adoption for use in fatigue critical applications. To overcome this challenge, predictive models capable of capturing the fatigue performance of AM metals under a variety of material and loading conditions are needed. This work explores a cyclic strain energy method to correlate the fatigue performance of laser beam powder bed fused austenitic stainless steel subjected to several heat treatments and loading conditions. Results indicate that the strain energy per cycle could be reasonably estimated for each condition utilizing classical cyclic deformation approaches. Despite the complex deformation behavior of the metastable stainless steel, the average strain energy approach successfully correlated the fatigue data for all heat treatment and loading conditions.
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Proceedings Inclusion? |
Definite: Post-meeting proceedings |