Wei Ya obtained his bachelor degree at State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology. He acquired his MSc. Degree in Materials Science and Engineering from the Technical University of Delft and finished his Ph.D. study at University Twente. His research interest is on laser materials advanced processing such as (1) materials deposition, alloying and modelling, (2) engineering design, fabrication and prototyping and (3) laser-assisted manufacturing and (4) 3D manufacturing. He is currently working at RAMLAB (Rotterdam) for 3D metal deposition with WAAM system and working at University Twente on laser metal deposition as post-doc researcher.