Modeling of thermal penetration of 1.07 µm continuous wave beam with target absorptivity corrections

Lee, Kyung Hwa; Baek, Won-Kye; Kwon, Hyukjoon; Gojani, Ardian B.; Yoh, Jack J.; Sin, Wan-Soon

doi:10.2514/6.2011-1140

Search citation statements

Order By: Relevance

Paper Sections

Select...

Modeling1

Citation Types

Supporting

Mentioning

Contrasting

Year Published

2019

Publication Types

Select...

Article1

Relationship

Self Cite0

Independent1

Authors

Journals

Cited by 1 publication

(1 citation statement)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A moving Gaussian heat flux [8] is applied on the top surface as a heat source. The absorptivity of steel plate is taken as 0.4 [9] for fiber laser with a wavelength of 1.07 µm. To simulate an LAM process of multilayer deposition of Ti6Al4V powders, a two-layer build in planar dimensions of 0.4 mm × 0.4 mm is deposited at the center of a square steel base of dimensions 1.2 × 1.2 × 0.8 mm.…”

Section: Modelingmentioning

confidence: 99%

Thermo-Mechanical Analysis of Laser Additive Manufacturing for Metals

Shih

Lin

2019

KEM

View full text Add to dashboard Cite

The aim of this study is to develop a finite element analysis technique to characterize the distributions of temperature and stress in the process of multilayer deposition of metallic powders by laser additive manufacturing (LAM). Simulation results indicate the residual normal stress in the laser moving direction is greater than that in other directions due to a larger temperature gradient, and it increases with number of deposited layers. Highly residual stresses are present in the LAM build and at the base nearby the interface between the build and base.

show abstract

Section: Modelingmentioning

confidence: 99%