Work

A Numerical Study on Scattering and Absorption of Laser Beam by Metal Particles

Year: 2024

Type: article

Abstract: In laser keyhole welding, keyhole formation is possible due to high power density. However, the high power density promotes the generation of metal particles, which may affect the formation of the weld joint in some cases. Therefore, in this study, scattering and absorption phenomena of the laser beam due to metal particles were modeled and used in numerical simulations. The degree of scattering and absorption of the laser beam for a fixed keyhole shape was calculated, and it showed that the size of the influential region affects the scattering and absorption results. From this, it is thought that the accuracy of the numerical analysis can be improved if an appropriate scattering and absorption occurrence region can be defined in laser keyhole welding.

Source: Journal of Welding and Joining

DOI: 10.5781/jwj.2024.42.6.2

Authors: Sang-Woo Han, Suck-Joo Na, Won-Ik Cho, Jeongrae Jeong, Lin-Jie Zhang

Institutions: Korea Advanced Institute of Science and Technology, Sunchon National University, Xi'an Jiaotong University

Language: English

Topic: Welding Techniques and Residual Stresses

Subfield: Mechanical Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: diamond

Funders: National Research Foundation of Korea, Ministry of Science and ICT, South Korea

Award: G710804191