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Ki, Hyungson
Laser Processing & Multiphysics Systems Laboratory
Research Interests
  • Laser materials processing
  • Laser material interaction

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Numerical simulation of heat transfer and fluid flow in coaxial laser cladding process for direct metal deposition

DC Field Value Language
dc.contributor.author Qi, Huan ko
dc.contributor.author Mazumder, Jyotirmoy ko
dc.contributor.author Ki, Hyungson ko
dc.date.available 2014-09-29T01:34:44Z -
dc.date.created 2014-09-25 ko
dc.date.issued 2006-07 -
dc.identifier.citation JOURNAL OF APPLIED PHYSICS, v.100, no.2, pp. - ko
dc.identifier.issn 0021-8979 ko
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/6514 -
dc.description.abstract The coaxial laser cladding process is the heart of direct metal deposition (DMD). Rapid materials processing, such as DMD, is steadily becoming a tool for synthesis of materials, as well as rapid manufacturing. Mathematical models to develop the fundamental understanding of the physical phenomena associated with the coaxial laser cladding process are essential to further develop the science base. A three-dimensional transient model was developed for a coaxial powder injection laser cladding process. Physical phenomena including heat transfer, melting and solidification phase changes, mass addition, and fluid flow in the melt pool, were modeled in a self-consistent manner. Interactions between the laser beam and the coaxial powder flow, including the attenuation of beam intensity and temperature rise of powder particles before reaching the melt pool were modeled with a simple heat balance equation. The level-set method was implemented to track the free surface movement of the melt pool, in a continuous laser cladding process. The governing equations were discretized using the finite volume approach. Temperature and fluid velocity were solved for in a coupled manner. Simulation results such as the melt pool width and length, and the height of solidified cladding track were compared with experimental results and found to be reasonably matched. ko
dc.description.statementofresponsibility open -
dc.language ENG ko
dc.publisher AMER INST PHYSICS ko
dc.subject POWDER INJECTION ko
dc.subject 3-D COMPONENTS ko
dc.subject PHASE-CHANGE ko
dc.subject MODEL ko
dc.subject TRANSPORT ko
dc.subject FORMULATION ko
dc.subject SYSTEMS ko
dc.subject SPEED ko
dc.subject MASS ko
dc.title Numerical simulation of heat transfer and fluid flow in coaxial laser cladding process for direct metal deposition ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-33746812558 ko
dc.identifier.wosid 000239423400145 ko
dc.type.rims ART ko
dc.description.wostc 41 *
dc.description.scopustc 56 *
dc.date.tcdate 2015-05-06 *
dc.date.scptcdate 2014-09-25 *
dc.identifier.doi 10.1063/1.2209807 ko
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