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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Lifecycle greenhouse gas emissions for an ethanol production process based on genetically modified cyanobacteria: CO 2 sourcing options
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Rapid Laser Processing of Thin Sr-Doped LaCrO 3– δ Interconnects for Solid Oxide Fuel Cells
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The effect of WAAM process parameters on process conditions and production metrics in the fabrication of single-pass multi-layer wall artifacts
The present work seeks to understand the impact of varying dwell time and input deposition power on part quality and overall production time for wire arc additive manufacturing. In this work, multi-layer wall geometries were deposited under different input power conditions without affecting the material deposition rate by setting traverse speed and wire feed speed constant and varying the contact tip-to-workpiece distance and the deposition power settings. Current and voltage data and optical imaging of the deposition zone were captured in situ, and wall geometry was characterized using laser scanning, so to understand the applicability of these methods for determining part height in situ. Furthermore, the present results demonstrate that alternating dwell times with lower input deposition power can result in significantly reduced overall production time and minimal material underbuilding, despite increased deposition geometry width. Furthermore, it is shown that while elimination of process dwell results in severe underbuilding of the deposition, it also yields the highest production rate for a hybrid-finished (e.g., deposited, machined) wall in terms of mm in build direction per minute and the highest buy-to-fly ratio.
Optimization of Process Families for Deployment of Carbon Capture Processes Using Machine Learning Surrogates
The paper was presented at the 33rd European Symposium on Computer Aided Process Engineering (ESCAPE33) June 18-21, 2023, in Athens, Greece.
Evolution of 316L Stainless Steel Feedstock Due to Laser Powder Bed Fusion Process.
Abstract not provided.
Energy use and greenhouse gas emissions from an algae fractionation process for producing renewable diesel
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Membrane-based reactive separations for process intensification during power generation
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An expert panel process to evaluate habitat restoration actions in the Columbia River estuary
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The effect of thermomechanical processing on second phase particle redistribution in U-10 wt%Mo
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