Abstract

A two-dimensional, transient model is proposed to study the dynamic process of keyhole formation and the material changes during both the laser-on and -off periods. The keyhole shape, temperature field, and velocity field are analyzed. The results indicate that the dynamic changes of the target material in the laser-off period have a great influence on the final structure of the keyhole.

© 2015 Chinese Laser Press

Dynamic balance of heat and mass in high power density laser welding

Hongze Wang, Motoki Nakanishi, and Yosuke Kawahito
Opt. Express 26(5) 6392-6399 (2018)

Interaction between the laser beam and keyhole wall during high power fiber laser keyhole welding

Jianglin Zou, Na Ha, Rongshi Xiao, Qiang Wu, and Qunli Zhang
Opt. Express 25(15) 17650-17656 (2017)

Dynamic change process of a recast layer in Nd:YAG millisecond laser trepan drilling

Wenqiang Duan, Xuesong Mei, Zhengjie Fan, Jingmeng Chen, and Yifei Zhang
J. Opt. Soc. Am. B 37(3) 804-812 (2020)

Percussion drilling in glasses and process dynamics with femtosecond laser GHz-bursts

John Lopez, Samba Niane, Guillaume Bonamis, Pierre Balage, Eric Audouard, Clemens Hönninger, Eric Mottay, and Inka Manek-Hönninger
Opt. Express 30(8) 12533-12544 (2022)

Numerical approach for hydrodynamic behavior in the kerf with a quasi-complete model of the laser cutting process

T. Tamsaout, E. H. Amara, and A. Bouabdallah
J. Opt. Soc. Am. A 37(11) C86-C94 (2020)