Understanding melt pool characteristics as a means for reducing build layout quality variations in laser-based powder bed fusion: An approach toward spatial parameter compensations Article Swipe

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Jaivindra Singh , João Pedro Oliveira , Hunter Taylor , Jesus Rivas , Jorge Mireles , Oscar García , Ryan Wicker ·

YOU? · · 2025 · Open Access · · DOI: https://doi.org/10.36922/esam025420029

This study investigates the impact of build platform location on melt pool variability during laser-based powder bed fusion of metals. The incident angle and gas flow are hypothesized to influence melt pool penetration and contribute to spatial variations in the melt pool. Results show that the typical build strategy using the same material-dependent processing parameters for all parts throughout the build chamber produces parts with location-dependent properties. An overarching goal of the present work was to attempt to fabricate similar parts at different locations within the build chamber by identifying processing parameters that produce similar melt pool depths at these locations. It was further hypothesized that by normalizing process parameters through similar melt pool depths, similar porosity counts could be achieved at these locations, thus mitigating process-induced variability. The study emphasizes the necessity of spatial parameter adjustments to minimize variability across different locations within the build platform, as well as the requirement for uniform gas flow across the build chamber, thereby eliminating gas flow-dependent variations from the analysis.

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Process (Computing)

Work (Physics)

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Engineering Drawing

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Porosity Process (computing) Process engineering Flow (mathematics) Work (physics) Fusion Spatial variability Quality (philosophy) Environmental science Permeability (electromagnetism) Petroleum engineering Engineering drawing Mechanical engineering Computer science Materials science Flow conditions Simulation Homogeneity (statistics) Simulation modeling Penetration (warfare) Mechanics Biological system Mathematical model Process variable Work flow Engineering

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Landing Page: https://doi.org/10.36922/esam025420029
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DOI: https://doi.org/10.36922/esam025420029

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Title: Understanding melt pool characteristics as a means for reducing build layout quality variations in laser-based powder bed fusion: An approach toward spatial parameter compensations

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Publication year: 2025

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Publication date: 2025-11-25

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Authors: Jaivindra Singh, João Pedro Oliveira, Hunter Taylor, Jesus Rivas, Jorge Mireles, Oscar García, Ryan Wicker

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Landing page: https://doi.org/10.36922/esam025420029

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Concepts: Porosity, Process (computing), Process engineering, Flow (mathematics), Work (physics), Fusion, Spatial variability, Quality (philosophy), Environmental science, Permeability (electromagnetism), Petroleum engineering, Engineering drawing, Mechanical engineering, Computer science, Materials science, Flow conditions, Simulation, Homogeneity (statistics), Simulation modeling, Penetration (warfare), Mechanics, Biological system, Mathematical model, Process variable, Work flow, Engineering

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