About: Modeling and Experimental Analysis of Energy Attenuation and Partitioning during Laser Based Direct Energy Deposition

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type	Academic Article research paper schema:ScholarlyArticle
isDefinedBy	Covid-on-the-Web dataset
title	Modeling and Experimental Analysis of Energy Attenuation and Partitioning during Laser Based Direct Energy Deposition
Creator	Liu, Zhichao Wuest, Thorsten Wang, Xinlin Zhang, Hong-Chao
source	Elsevier
abstract	Abstract Energy attenuation and partitioning are important phenomena during laser-material interaction in laser based direct energy deposition (DED). They have immediate impact on molten pool thermal history and thus affecting the quality of the fabricated part. In this paper, a lumped capacity model was developed to analyze the energy attenuation and partitioning in DED for Inconel (IN) 718 fabrication. Energy absorption and reflection by powders and substrate, energy loss due to radiation and convection as well as latent heat of fusion were quantified based on experimental analysis. High-resolution infrared camera was used to measure the temperature of the molten pool. The energy attenuation by the powders was measured by a power meter. The results suggest that the energy attenuation coefficient of IN 718 in DED is 6.13 % when laser power is 250 W. Also, it is concluded that about 36.3 % of the laser energy is absorbed by the substrate, only a small amount of energy (less than 1 %) is lost due to radiation and convection.
has issue date	2020-12-31(xsd:dateTime)
bibo:doi	10.1016/j.promfg.2020.05.094
has license	els-covid
sha1sum (hex)	dbf027628611bf64bc0048114d380bd10dc8bd43
schema:url	https://doi.org/10.1016/j.promfg.2020.05.094
resource representing a document's title	Modeling and Experimental Analysis of Energy Attenuation and Partitioning during Laser Based Direct Energy Deposition
schema:publication	Procedia Manufacturing
resource representing a document's body	covid:dbf027628611bf64bc0048114d380bd10dc8bd43#body_text
is schema:about of	named entity 'temperature' named entity 'attenuation' named entity 'attenuation' named entity 'molten' named entity 'attenuation' »more»

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