A high power single-mode fiber laser has received a lot of attention in various materials processing fields. In order to carry out processing under proper conditions with single-mode fiber laser, the dynamic flows of fluids inside the materials should be precisely understood. We carried out the numerical analysis of materials processing using a 5-kW single-mode fiber laser. The dynamic flows of the copper fluid during the bead-on-plate tests are calculated and the results agree well with the experimental results. The processing with the different scan speed and spot size, and at the output power of 10 kW are numerically calculated as well. The proper processing conditions with less spatters and dross for each materials can be determined by the dynamic analysis.

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Y. Takubo, S. Ikoma, K. Uchiyama, H. Kusaka, Y. Umeda, and M. Kashiwagi, "Dynamic analysis of materials processing with 5-kW single-mode fiber laser," Proc. SPIE 10897, Fiber Lasers XVI: Technology and Systems, 1089712 (Presented at SPIE LASE: February 06, 2019; Published: 7 March 2019); https://doi.org/10.1117/12.2505991.