Global ETD Search
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Showing 1 to 8 of 8 for “"molten pool"”.
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Comprehensive modeling of process-molten pool condition-property correlations for wire-feed laser additive manufacturing
… and control methods by studying the process-molten pool condition-property relation for the robotic laser wire-feed DED process. Analysis and characterization are performed on the experimentally collected in situ sensing data for the molten pool under a set of controlled process parameters …
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On temperature measurements and analysis in electron beam additive manufacturing using near infrared thermography
… electron beam scanning path and the size of the molten pool. Several experiments of different settings were conducted to evaluate the effects of transmission loss due to glass metallization and the effects of process parameters and part overhang geometry on temperature distributions and melt-pool …
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DATA-DRIVEN MULTI-SCALE MULTI-PHYSICS MODELLING OF THERMAL STRESS AND DISTORTION IN ADDITIVE MANUFACTURING
… of isotherms and temperature profiles around molten pool regions. Based on the mechanical model of data-driven track-scale simulation, the non-uniform inherent strain mapping method is investigated to accurately and efficiently model thermal stress and distortion at the part scale. The …
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Numerical Analysis of the Melt Pool Kinetics in Selective Laser Melting Based Additive Manufacturing of M g2Si Thermoelectric Powders
… vection currents of the liquid melt within the molten pool. This approach was critical for optimizing processing parameters in our investigation, which were also used for printing the M g2Si powders using SLM. Additionally, a phase field-based model was developed to sim- ulate the directional …
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Investigation of effect of process parameters on multilayer builds by direct metal deposition
… through which parts are fabricated by creating a molten pool into which metal powder is injected as. During fabrication, complex thermal activity occurs in different regions of the build; for example, newly deposited layers will reheat previously deposited layers. The objective of this study was …
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Laser weld pool optical diagnostics: Topography and visualization used for surface contour analysis and process monitoring
… and mapping the deformation of the weld pool free surface. The first known measurements of the molten surface contour have been obtained, analyzed, and compared with predicted surface contours from five models in order to ascertain what phenomena are most important in determining the …
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Thermocapillary Convection During Laser Surface Heating (Surface Tension)
… for the thermocapillary convection within the molten pool are thus formulated. The models are solved numerically. A transient two-dimensional model, which gives a qualitative understanding of the flow field and the heat transfer in the spanwise direction, is first solved. It is found that the …
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Thermoelectric Energy Harvesting in Harsh Environments and Laser Additive Manufacturing for Thermoelectric and Electromagnetic Materials
… distribution, powder bed shrinkage, and molten pool dynamics, advancing the understanding and optimization of thermoelectric device fabrication using additive manufacturing. One step further, SLM and DED experiments were carried out to validate the simulation results and testify to the …