Ruihang Dai

I am a PhD candidate at the Professorship of Laser-based Additive Manufacturing at the Technical University of Munich, working with Prof. Katrin Wudy on optical process monitoring for laser powder bed fusion of metals (PBF-LB/M).

My research develops multispectral imaging (MSI) systems that measure absolute temperature and emissivity of the melt pool in situ, and uses them to understand melt pool physics under advanced laser beam shaping. I combine radiometric calibration, high-speed imaging, and materials characterization to connect thermal signatures with microstructure and defect formation.

Before my PhD, I received my M.Sc. in Mechanical Engineering from RWTH Aachen University and wrote my master’s thesis at ETH Zürich on surrogate modeling of thermomechanical processes in wire-arc additive manufacturing. I hold a B.Sc. from Huazhong University of Science and Technology.