Events Calendar

Advanced Manufacturing Seminar

Speaker: Dr. Charlie C. L. Wang, University of Manchester

Talk Title: Multi-Axis Additive Manufacturing: Support-Free, Mechanical Strength and Motion Planning

Abstract: In this talk, I will present our recent work related to multi-axis additive manufacturing (i.e., MAAM). Although called 3D printing, the processing of material accumulation in most commercial AM systems is however taken in a 2.5D manner, which leads to two major problems - 1) supporting structures are needed below regions with large overhang and 2) weak mechanical strength between layers of accumulated materials. Both challenges are tackled in our work by incorporating multi-axis motion into the material deposition process. Printing along real 3D tool-paths is conducted. Automatic tool-path planning for multi-axis 3D printing is based on two successive decompositions, first volume-to-surfaces and then surfaces-to-curves. Two computational pipelines will be introduced, where the first one is based on voxel representation for support-free 3D printing and the second paradigm is based on vector-field computation for reinforcing the mechanical strength of 3D printed models. Lastly, I will present methods for effectively planning the motion trajectory of robots in these manufacturing tasks, the tool-paths of which are usually complex and have a large number of discrete-time constraints as waypoints.

Biography:
Prof. Charlie C. L. Wang currently holds a Chair of Smart Manufacturing with the University of Manchester. Prior to this, he was a Chair of Advanced Manufacturing at Delft University of Technology and a Professor of Mechanical and Automation Engineering at the Chinese University of Hong Kong. He also worked as a visiting professor at University of Southern California during sabbatical leave in 2011. Prof. Wang received a few awards from professional societies including the ASME CIE Excellence in Research Award (2016), the ISSMO/Springer Prize (2019), the Best Paper Award (2nd Place) of Solid and Physical Modeling (2019), the NAMRI/SME Outstanding Paper Award (2013), the Best Paper Awards of ASME CIE Conferences (twice in 2008 and 2001 respectively), the Prakash Krishnaswami CAPPD Best Paper Award of ASME CIE Conference (2011), and the ASME CIE Young Engineer Award (2009). He received his B.Eng. degree (1998) in mechatronics engineering from Huazhong University of Science and Technology and his Ph.D. degree (2002) in mechanical engineering from Hong Kong University of Science and Technology (HKUST). He is a Fellow of American Society of Mechanical Engineers (ASME), and is also currently the chair of Solid Modeling Association (SMA).

Host: Center for Advanced Manufacturing

More Info: Registration Link: https://usc.zoom.us/webinar/register/WN_I4t2NMfJS--fyzciHcbzlQ

Audiences: Everyone Is Invited

Contact: Tessa Yao

Event Link: Registration Link: https://usc.zoom.us/webinar/register/WN_I4t2NMfJS--fyzciHcbzlQ