Calculation of laser absorption by metal powders in additive manufacturing

被引：265
|
作者：
Boley, C. D. [1 ]
Khairallah, S. A. [1 ]
Rubenchik, A. M. [1 ]
机构：
[1] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA
来源：
APPLIED OPTICS | 2015年 / 54卷 / 09期
关键词：
MODEL;
D O I：
10.1364/AO.54.002477
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We have calculated the absorption of laser light by a powder of metal spheres, typical of the powder employed in laser powder-bed fusion additive manufacturing. Using ray-trace simulations, we show that the absorption is significantly larger than its value for normal incidence on a flat surface, due to multiple scattering. We investigate the dependence of absorption on powder content (material, size distribution, and geometry) and on beam size. (c) 2015 Optical Society of America
引用
收藏
页码：2477 / 2482
页数：6
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