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TUM Achieves PBF-LB/M Melt Pool Temperature Control via Inverse-Designed Laser Beam Shapes
2026-05-02
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Impact score: 39
A research team from the Technical University of Munich and other institutions published a paper in Additive Manufacturing, demonstrating temperature control of melt pools in metal powder bed fusion by inversely designing laser beam shapes. The study employs simulation-based gradient optimization to generate three novel beam shapes—axisymmetric, laterally symmetric, and unconstrained—aiming for rectangular melt tracks and lower melt pool temperatures. Experiments used a spatial light modulator for flexible shaping, with melt track dimensions deviating less than 20% from microscopic images, and multispectral imaging validated the temperature control effect. This method significantly reduces evaporation, offering a new pathway for improved process control.
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慕尼黑工大通过逆向设计激光束形状实现PBF-LB/M熔池温度控制
慕尼黑工业大学等机构研究团队在《增材制造》发表论文，通过逆向设计激光束形状实现金属粉末床熔融温度控制。研究采用基于模拟的梯度优化，生成轴对称、侧向对称及无约束三类新型光束形状，目标为获得矩形熔道并降低熔池温度。实验使用空间光调制器灵活整形，熔道尺寸与显微图像偏差低于20%，多光谱成像验证了温度控制效果。该方法可显著减少蒸发，为提升工艺控制提供新路径。