Revealing particle-scale powder spreading dynamics in powder-bed-based additive manufacturing process by high-speed x-ray imaging

Abstract Powder spreading is a key step in the powder-bed-based additive manufacturing process, which determines the quality of the powder bed and, consequently, affects the quality of the manufactured part. However, powder spreading behavior under additive manufacturing condition is still not clear...

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Autores principales: Luis I. Escano, Niranjan D. Parab, Lianghua Xiong, Qilin Guo, Cang Zhao, Kamel Fezzaa, Wes Everhart, Tao Sun, Lianyi Chen
Formato: article
Lenguaje:EN
Publicado: Nature Portfolio 2018
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Acceso en línea:https://doaj.org/article/b02190fcc49545fd9455977808d1b2de
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spelling oai:doaj.org-article:b02190fcc49545fd9455977808d1b2de2021-12-02T15:08:28ZRevealing particle-scale powder spreading dynamics in powder-bed-based additive manufacturing process by high-speed x-ray imaging10.1038/s41598-018-33376-02045-2322https://doaj.org/article/b02190fcc49545fd9455977808d1b2de2018-10-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-33376-0https://doaj.org/toc/2045-2322Abstract Powder spreading is a key step in the powder-bed-based additive manufacturing process, which determines the quality of the powder bed and, consequently, affects the quality of the manufactured part. However, powder spreading behavior under additive manufacturing condition is still not clear, largely because of the lack of particle-scale experimental study. Here, we studied particle-scale powder dynamics during the powder spreading process by using in-situ high-speed high-energy x-ray imaging. Evolution of the repose angle, slope surface speed, slope surface roughness, and the dynamics of powder clusters at the powder front were revealed and quantified. Interactions of the individual metal powders, with boundaries (substrate and container wall), were characterized, and coefficients of friction between the powders and boundaries were calculated. The effects of particle size on powder flow dynamics were revealed. The particle-scale powder spreading dynamics, reported here, are important for a thorough understanding of powder spreading behavior in the powder-bed-based additive manufacturing process, and are critical to the development and validation of models that can more accurately predict powder spreading behavior.Luis I. EscanoNiranjan D. ParabLianghua XiongQilin GuoCang ZhaoKamel FezzaaWes EverhartTao SunLianyi ChenNature PortfolioarticlePowder SpreadingAdditive Manufacturing ProcessPowder ClustersSurface Roughness SlopeRepose AngleMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-11 (2018)
institution DOAJ
collection DOAJ
language EN
topic Powder Spreading
Additive Manufacturing Process
Powder Clusters
Surface Roughness Slope
Repose Angle
Medicine
R
Science
Q
spellingShingle Powder Spreading
Additive Manufacturing Process
Powder Clusters
Surface Roughness Slope
Repose Angle
Medicine
R
Science
Q
Luis I. Escano
Niranjan D. Parab
Lianghua Xiong
Qilin Guo
Cang Zhao
Kamel Fezzaa
Wes Everhart
Tao Sun
Lianyi Chen
Revealing particle-scale powder spreading dynamics in powder-bed-based additive manufacturing process by high-speed x-ray imaging
description Abstract Powder spreading is a key step in the powder-bed-based additive manufacturing process, which determines the quality of the powder bed and, consequently, affects the quality of the manufactured part. However, powder spreading behavior under additive manufacturing condition is still not clear, largely because of the lack of particle-scale experimental study. Here, we studied particle-scale powder dynamics during the powder spreading process by using in-situ high-speed high-energy x-ray imaging. Evolution of the repose angle, slope surface speed, slope surface roughness, and the dynamics of powder clusters at the powder front were revealed and quantified. Interactions of the individual metal powders, with boundaries (substrate and container wall), were characterized, and coefficients of friction between the powders and boundaries were calculated. The effects of particle size on powder flow dynamics were revealed. The particle-scale powder spreading dynamics, reported here, are important for a thorough understanding of powder spreading behavior in the powder-bed-based additive manufacturing process, and are critical to the development and validation of models that can more accurately predict powder spreading behavior.
format article
author Luis I. Escano
Niranjan D. Parab
Lianghua Xiong
Qilin Guo
Cang Zhao
Kamel Fezzaa
Wes Everhart
Tao Sun
Lianyi Chen
author_facet Luis I. Escano
Niranjan D. Parab
Lianghua Xiong
Qilin Guo
Cang Zhao
Kamel Fezzaa
Wes Everhart
Tao Sun
Lianyi Chen
author_sort Luis I. Escano
title Revealing particle-scale powder spreading dynamics in powder-bed-based additive manufacturing process by high-speed x-ray imaging
title_short Revealing particle-scale powder spreading dynamics in powder-bed-based additive manufacturing process by high-speed x-ray imaging
title_full Revealing particle-scale powder spreading dynamics in powder-bed-based additive manufacturing process by high-speed x-ray imaging
title_fullStr Revealing particle-scale powder spreading dynamics in powder-bed-based additive manufacturing process by high-speed x-ray imaging
title_full_unstemmed Revealing particle-scale powder spreading dynamics in powder-bed-based additive manufacturing process by high-speed x-ray imaging
title_sort revealing particle-scale powder spreading dynamics in powder-bed-based additive manufacturing process by high-speed x-ray imaging
publisher Nature Portfolio
publishDate 2018
url https://doaj.org/article/b02190fcc49545fd9455977808d1b2de
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