Akademik Veri Yönetim Sistemi
Journal of Physics D: Applied Physics, cilt.59, sa.18, 2026 (SCI-Expanded, Scopus)
Selective laser melting (SLM) has emerged as an innovative technique for additive manufacturing, offering design freedom and net-shaped fabrication of complex metallic components. A critical yet often overlooked aspect is the laser beam profile used in the SLM process, which influences the laser-material interaction and affects the quality and performance of the final parts. This study employs numerical modeling to simulate the laser-material interaction in SLM, aiming to elucidate the impact of varying beam shapes on the melt pool formation and its characteristics. This experimental validated model provides a comprehensive analysis of laser energy absorption, beam shaping, heat transfer, and solidification dynamics during the SLM process. This study also introduces a unique approach, utilizing an intensity factor (β) based on beam profile intensity, to ensure consistent energy supply across different beam shapes and enable fair comparisons. The study compares Gaussian, Donut, Top hat, and Bessel beam shapes. The results show that changes in the laser beam profile slightly affect the size of the molten pool, but significantly influence the temperature distribution. Top hat and Donut beams have lower peak temperatures compared to Gauss and Bessel beams. These findings provide important insights into understanding laser beam shaping effects and optimizing the SLM process to enhance part quality and performance.