Title：Laser Direct Metal Deposition/Selective Laser Melting of Pure Tungsten for Medical Imaging Applications
Time：14:30 to 16:30, May.9, 2019
Place：F201, School of Mechanical Engineering
Host：LI Yongbing, Associate Professor /ZHANG Chaoqun, Doctor (Institute of Manufacturing for Thin-walled Structures)

Speaker：Dr. Andrew Pinkerton
Biography
Dr. Andrew Pinkerton is a Senior Lecturer in Department of Engineering at Lancaster University. After obtaining a BEng in Mechanical Engineering, his career began in industry where he worked as a Project Engineer with IMI and then a Research Engineer with Ford Motor Company. He also obtained an MBA and became a Chartered Engineer in this period. Since moving to Academia his main research interest has been laser materials processing, particularly laser direct metal deposition. He has a PhD in this area and has published over 150 scientific papers. He serves on editor board of Surface Engineering.

Abstract
The talk will focus on Direct Metal Deposition, also known as laser cladding and laser engineered net shaping (LENS). This rapidly growing process can be used for both additive manufacturing (AM), surface improvement and repair and has many advantages over other AM techniques. The talk will describe the technique as a system and draw from the speaker's own experience, to outline analytical and numerical approaches for modelling the process.

Speaker：Dr. Yingtao Tian
Biography
Dr. Yingtao Tian received BEng & MEng in Welding Science and Technology from Harbin Institute of Technology, and PhD in Mechanical Engineering from Loughborough University in 2010. He then worked as a researcher at Rutherford Appleton Laboratory and University of Birmingham in the area of precision micro-manufacturing. In 2013, he moved to The University of Manchester working on laser processing of aerospace materials, laser-materials interaction, post-processing of additive manufactured components, laser welding of dissimilar materials and advanced materials characterisation techniques etc. Since 2018, he joined the Department of Engineering at Lancaster University as a Lecturer and his research interests focus on advanced laser processing, additive manufacturing & 3D printing, micro-fabrication etc.
 
Abstract
Additive manufacturing (AM) is a key enabler for high value manufacturing because it can offer several benefits such as design freedom, digital manufacturing flexibility and flat cost to volume ratio. It has been highlighted as a revolutionary technique that can dramatically change the way components are designed, developed, manufactured and supplied. More attractively, it becomes possible to produce 3D complex shape components in refractory metals which was impossible with traditional approaches. This study is to investigate the feasibility of using selective laser melting (SLM), the most matured metal AM technique, to process pure tungsten powder for making 3D fine structures for medical applications.