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Effects of Scanning Strategy on Residual Stress Formation in Additively Manufactured Ti-6Al-4V Parts
(University of Texas at Austin, 2017)
Parts fabricated via directed energy additive manufacturing (AM) can experience very high, localized
temperature gradients during manufacture. These temperature gradients are conducive to the formation
of a complex ...
Non-Destructive Characterization of Additively Manufactured Components Using X-Ray Micro-Computed Tomography
(University of Texas at Austin, 2018)
Quality control and microstructure characterization are essential corner stones of the process optimization
through the understanding of process-microstructure-relations in additive manufacturing. The scope of this
work ...
Effect of Shield Gas on Surface Finish of Laser Powder Bed Produced Parts
(University of Texas at Austin, 2018)
Additive manufacturing (AM) of metals is a novel manufacturing technique that allows
for net-shape or near net-shape parts to be produced quickly. Within additive manufacturing a
large concern is the produced surface ...
Correlative Beam Path and Pore Defect Space Analysis for Modulated Powder Bed Laser Fusion Process
(University of Texas at Austin, 2018)
There are ongoing challenges in achieving full density metal parts via Laser Powder Bed
fusion (LPBF). Numerous of studies have shown that the part density depends on the process
parameters, the powder characteristics ...
Controlling Thermal Expansion with Lattice Structures Using Laser Powder Bed Fusion
(University of Texas at Austin, 2017)
Tuning the Co-efficient of Thermal Expansion (CTE) of a component is traditionally limited by material
choice. Laser Powder Bed Fusion (LPBF) enables the designer to create complex geometries including lattice
structures. ...
Characterization of Impact Toughness of 304L Stainless Steel Fabricated Through Laser Powder Bed Fusion Process
(University of Texas at Austin, 2018)
In this research, the impact toughness of powder bed based additively manufactured 304L
stainless steel was investigated. Charpy specimens were built in vertical, horizontal and inclined
(45°) orientations to investigate ...
Convection Heat Transfer Coefficients for Laser Powder Bed Fusion
(University of Texas at Austin, 2018)
This study investigates the effects of convection heat transfer during the laser-powder bed fusion
(L-PBF) additive manufacturing process. For the L-PBF process, parts are fabricated under a
purged, inert environment to ...
Low Cost, High Speed Stereovision for Spatter Tracking in Laser Powder Bed Fusion
(University of Texas at Austin, 2018)
Powder Bed Fusion Additive Manufacturing affords new design freedoms for metallic
structures with complex geometries in high performance materials. The aerospace industry has
identified the inherent benefits of AM not ...
Development of Novel High Temperature Laser Powder Bed Fusion System for the Processing of Crack-Susceptible Alloys
(University of Texas at Austin, 2018)
In the industrial panorama, Laser Powder Bed Fusion (LPBF) systems enable for the near net shaping of
metal powders into complex geometries with unique design features. This makes the technology appealing for
many ...
The Effects of Powder Recycling on the Mechanical Properties of Additively Manufactured 17-4 PH Stainless Steel
(University of Texas at Austin, 2018)
The booming interest in Additive Manufacturing (AM), is seeing a rising number of
industries and research entities adopting this technology into their manufacturing practices. Of
particular interest is Laser Powder Bed ...