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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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The effect of laser scanning strategy on NiTi shape memory alloys processed by laser powder bed fusion
Not provided.
Parametric Finite Element Analysis of Naturally Corroded Steel Specimens Using 3D Surface Laser Scans
Corrosion is considered a uniform thickness reduction design guideline of the maritime industry. However, additionally, the corroded and irregular morphology of the surface affects the steel's load-bearing capacity and its impact on the strength and elongation behaviour of the steel is not yet fully understood. These effects on the local behaviour of steel structures under tensile loading were investigated with tensile tests on naturally corroded steel specimens and nonlinear finite element simulations including the corroded surface morphology with a uniform surface idealation. The models also include the deformed specimen shape. The developed approach led to highly accurate parametric finite element models predicting the ultimate tensile strength and longitudinal position of fracture. The results show that all included aspects are essential for accurate simulations, while solely the maximum available surface resolution was not as decisive.
Integrated Laser-Material Interaction and PIC-DSMC Simulation of Laser-Triggered Vacuum Switches
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Laser Induced Breakdown Spectroscopy for Chemistry and Composition Monitoring of Laser Powder Bed Fusion Processing
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Laser Speckle Photometry for Residual Stress Diagnosis of Laser Powder Bed Fusion Processing
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Laser Induced Breakdown Spectroscopy for Material Identification in Laser Powder Bed Fusion Processing
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Leveraging Laser Parameters and Layer Remelting to Tailor Microstructure in Laser Powder Bed Fusion
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Update on laser-plasma interaction study of higher yield designs driven at higher laser energy [Slides]
Abstract not provided.
Leveraging Laser Parameters and Layer Remelting to Tailor Microstructure in Laser Powder Bed Fusion
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Laser Indirect Drive Designs at 10 MJ of Incident Laser Energy
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Scalings of laser-driven MeV electron sources with relativistic multi-picosecond laser pulses
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From Jupiter Laser Facility to National Ignition Facility: An overview of High-Power Laser Experiments at LLNL
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MODERNIZATION OF THE CHACO LASER AT THE Z-BACKLIGHTER LASER FACILITY
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Addressing Fluidic Constraints on Interleaved Immersion Cooled High Brightness Laser Diodes for Next Generation Laser Systems
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Addressing Fluidic Constraints on Interleaved Immersion Cooled High Brightness Laser Diodes for Next Generation Laser Systems
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Laser-plasma Instabilities Driven by Helical Laser Beams
Final Technical Report