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Electromagnetic wave-based analysis of laser–particle interactions in directed energy deposition additive manufacturing
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- Zhang, Z. (author)
- State Key Laboratory of Structural Analysis for Industrial Equipment, Department of Engineering Mechanics, Faculty of Vehicle Engineering and Mechanics, Dalian University of Technology, Dalian, China. International Research Center for Computational Mechanics, Dalian University of Technology, Dalian, China
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- Ge, P. (author)
- State Key Laboratory of Structural Analysis for Industrial Equipment, Department of Engineering Mechanics, Faculty of Vehicle Engineering and Mechanics, Dalian University of Technology, Dalian, China
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- Li, T. (author)
- School of Mechanical Engineering, Dalian University of Technology, Dalian, China
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- State Key Laboratory of Structural Analysis for Industrial Equipment, Department of Engineering Mechanics, Faculty of Vehicle Engineering and Mechanics, Dalian University of Technology, Dalian, China International Research Center for Computational Mechanics, Dalian University of Technology, Dalian, China State Key Laboratory of Structural Analysis for Industrial Equipment, Department of Engineering Mechanics, Faculty of Vehicle Engineering and Mechanics, Dalian University of Technology, Dalian, China (creator_code:org_t)
- Elsevier, 2020
- 2020
- English.
- In: Additive Manufacturing. - : Elsevier. - 2214-8604 .- 2214-7810. ; 34
- Journal article (peer-reviewed)
Abstract
Subject headings
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- A modified heat-source model based on electromagnetic wave theory was proposed to investigate the interactions between powder particles and a laser beam, considering the spatial distribution of particles inside the beam. The absorption of energy by these particles in laser directed energy deposition additive manufacturing was calculated using the proposed model, which was validated experimentally. Both numerical model and experiment were used to study the effects of powder velocities on the temperature variations in the additive manufacturing process. Results indicate that the direct heat transfer from the laser to a target can be increased if the size distribution is wider; it also increases with the velocity of the particles. However, with the increase of powder-flow rate, the rate of mass transfer decreases the heat transfer. Melt-pool depth in melting and re-melting processes can therefore be controlled by varying these parameters.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Teknisk mekanik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Applied Mechanics (hsv//eng)
Keyword
- additive manufacturing
- electromagnetic wave
- powder particle
- heat source model
- Hållfasthetslära
- Solid Mechanics
Publication and Content Type
- ref (subject category)
- art (subject category)
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- Zhang, Z.
- Ge, P.
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- Zhao, G.Z.
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- ENGINEERING AND TECHNOLOGY
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- Luleå University of Technology
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