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입자 구형도에 따른 레이저 선가공의 비구형 흄 마이크로 입자 산포 특성 연구Dispersion Characteristics of Nonspherical Fume Micro-Particles in Laser Line Machining in Terms of Particle Sphericity

Other Titles
Dispersion Characteristics of Nonspherical Fume Micro-Particles in Laser Line Machining in Terms of Particle Sphericity
Authors
박중윤김경진
Issue Date
Jun-2022
Publisher
한국반도체디스플레이기술학회
Keywords
Laser Machining; Fume Particle; Particle Dispersion; Particle Sphericity; Trajectory Simulation
Citation
반도체디스플레이기술학회지, v.21, no.2, pp 1 - 6
Pages
6
Journal Title
반도체디스플레이기술학회지
Volume
21
Number
2
Start Page
1
End Page
6
URI
https://scholarworks.bwise.kr/kumoh/handle/2020.sw.kumoh/26071
ISSN
1738-2270
Abstract
This computational investigation of micro-sized particle dispersion concerns the fume particle contamination over target surface in high-precision laser line machining process of semiconductor and display device materials. Employing the random sampling based on probabilistic fume particle generation distributions, the effects of sphericity for nonspherical fume particles are analyzed for the fume particle dispersion and contamination near the laser machining line. The drag coefficient correlation for nonspherical particles in a low Reynolds number regime is selected and utilized for particle trajectory simulations after drag model validation. When compared to the corresponding results by the assumption of spherical fume particles, the sphericity of nonspherical fume particles show much less dispersion and contamination characteristics and it also significantly affects the particle removal rate in a suction air flow patterns.
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