Calculation of laser absorption by metal powders in additive manufacturing

C. D. Boley; S. A. Khairallah; A. M. Rubenchik

doi:10.1364/AO.54.002477

Applied Optics
Vol. 54,
Issue 9,
pp. 2477-2482
(2015)
•https://doi.org/10.1364/AO.54.002477

Calculation of laser absorption by metal powders in additive manufacturing

C. D. Boley, S. A. Khairallah, and A. M. Rubenchik

Get PDF
Email
Share
Get Citation
Copy Citation Text
C. D. Boley, S. A. Khairallah, and A. M. Rubenchik, "Calculation of laser absorption by metal powders in additive manufacturing," Appl. Opt. 54, 2477-2482 (2015)

Export Citation
- BibTex
- Endnote (RIS)
- HTML
- Plain Text
Citation alert
Save article

Related Topics
Table of Contents Category
- Geometrical Optics
Optics & Photonics Topics
?

The topics in this list come from the Optics and Photonics Topics applied to this article.

About this Article
History
- Original Manuscript: December 17, 2014
- Revised Manuscript: February 6, 2015
- Manuscript Accepted: February 14, 2015
- Published: March 19, 2015

Accepted Manuscript
Download Accepted Manuscript
Access to this article is made available via and is subject to OSA Publishing Terms of Use.

Abstract

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.

Full Article | PDF Article

More Like This

Metal powder absorptivity: modeling and experiment

C. D. Boley, S. C. Mitchell, A. M. Rubenchik, and S. S. Q. Wu
Appl. Opt. 55(23) 6496-6500 (2016)

Direct measurements of temperature-dependent laser absorptivity of metal powders

A. Rubenchik, S. Wu, S. Mitchell, I. Golosker, M. LeBlanc, and N. Peterson
Appl. Opt. 54(24) 7230-7233 (2015)

Laser ultrasonic imaging for defect detection on metal additive manufacturing components with rough surfaces

Jun Zhang, Jinfeng Wu, Xin Zhao, Shuxian Yuan, Guanbing Ma, Jiaqi Li, Ting Dai, Huaidong Chen, Bing Yang, and Hui Ding
Appl. Opt. 59(33) 10380-10388 (2020)

Previous Article Next Article

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (10)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (2)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (2)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

(1) Material	(2) Re(n)	(3) Im(n)	(4) $α$ (Flat Surface)	(5) $α$ (Isolated Sphere)	(6) $α$ (Top Layer)	(7) $α$ (Bottom Layer)	(8) $α$ (Substrate)	(9) $α$ (Spheres + Substrate)	(10) $α$ (Spheres + Substrate)/ $α$ (Flat Surface)
Ag	0.23	7.09	0.018	0.020	0.072	.047	0.010	0.13	7.2
Al	1.244	10.	0.047	0.056	0.15	0.063	0.011	0.22	4.7
Au	0.278	7.20	0.021	0.024	0.081	0.050	0.011	0.14	6.7
Cu	0.35	6.97	0.028	0.032	0.101	0.055	0.011	0.17	6.1
SS	3.27	4.48	0.34	0.36	0.53	0.062	0.013	0.60	1.7
Ti	3.45	4.	0.38	0.40	0.56	0.062	0.014	0.64	1.7

Material	Ideal Array (Table 1)	Gaussian Array	Bimodal Array
Ag	0.13	0.081	0.14
Au	0.14	0.093	0.16
SS	0.60	0.58	0.63

(1) Material	(2) Re(n)	(3) Im(n)	(4) $α$ (Flat Surface)	(5) $α$ (Isolated Sphere)	(6) $α$ (Top Layer)	(7) $α$ (Bottom Layer)	(8) $α$ (Substrate)	(9) $α$ (Spheres + Substrate)	(10) $α$ (Spheres + Substrate)/ $α$ (Flat Surface)
Ag	0.23	7.09	0.018	0.020	0.072	.047	0.010	0.13	7.2
Al	1.244	10.	0.047	0.056	0.15	0.063	0.011	0.22	4.7
Au	0.278	7.20	0.021	0.024	0.081	0.050	0.011	0.14	6.7
Cu	0.35	6.97	0.028	0.032	0.101	0.055	0.011	0.17	6.1
SS	3.27	4.48	0.34	0.36	0.53	0.062	0.013	0.60	1.7
Ti	3.45	4.	0.38	0.40	0.56	0.062	0.014	0.64	1.7

Material	Ideal Array (Table 1)	Gaussian Array	Bimodal Array
Ag	0.13	0.081	0.14
Au	0.14	0.093	0.16
SS	0.60	0.58	0.63

Abstract

Cited By

Figures (10)

Tables (2)

Equations (2)

Applied Optics