Tuesday, April 14, 2015

TOMORROW! Manufacturing Joint Faculty Candidate Seminar: "Metallic Laser Additive Manufacturing" by Dr. Jay Choi 4.15.15/ 11:00am-12:00pm/ CREOL RM 103

Seminar: "Metallic Laser Additive Manufacturing" by Dr. Jay Choi
Wednesday, April 15, 2015 11:00 AM to 12:00 PM
CREOL Room 103

Celebrating the International Year of Light 2015

Jay Choi, Ph.D.
Visiting Scholar, Center for Laser Aided Intelligent Manufacturing, University of Michigan, Ann Arbor Director, SenSigma, Ann Arbor, MI

Over the last two decades laser additive manufacturing (LAM) technological communities have made considerable efforts, developing scientific and technological elements necessary for rapid and reliable production of near net shape components with desired properties and capabilities and with minimum cost and lead-time possible. LAM technology has opened up alternative possibilities for the manufacture of end-use components as well as the reuse of legacy components.  Metallic components are directly made from CAD dimension by melting metal powders pixel-by-pixel utilizing a laser, maintaining dimensional accuracy and material integrity utilizing a closed-loop feedback control.  Expanding LAM into high-value safety-stringent applications, next-level of complexities and challenges, such as real-time control of LAM to improve dimensional accuracy to minimize post-processing, real-time minimization of residual stress, in-situ monitoring and control of microstructure to obtain desired properties and performance, methodology to derive desired mechanical properties, and real-time quality control through in-situ inspection, need to be facilitated and addressed in terms of scientific know-how and manufacturing efficiency.  This presentation summarizes and discusses LAM advancements throughout two decades of R&D efforts carried out through lab environments and real-world settings, facilitating those complexities. 

Dr. Choi has been overseeing R&D and engineering directives including laser based manufacturing system design, sensor technology, numerical analysis, process quality control, technology management, and so on, regarding government/external R&D contracts, working as R&D expert, faculty, and technical executive throughout academia (UIUC, UMich, and MS&T) and industries: His engineering and R&D experiences/interests are in the fields of advanced manufacturing (e.g. additive / formative / subtractive manufacturing) utilizing laser, surface engineering/tribology, instruments using lasers, rapid production realization, CAE/CAD, transport phenomena in materials processing, and process modeling.  He has over 20 years experiences of mechanical (including opto-mechanical / mechatronics) / materials R&D in the area of materials processing, heat transfer, advanced manufacturing, and laser processing system development.  He has deeply involved in developing advanced laser additive manufacturing techniques for last 20 years.  Dr. Choi has published more than 50 technical publications in the area of laser processing, process modeling, and additive manufacturing through refereed journals and conference proceedings.  He has also participated in several professional societies, such as ASME, LIA, ASTM, TMS, ASEE, and so on.  He got his BSME degree from Seoul National University (Seoul, Korea), and his M.S./Ph.D. degrees from University of Illinois at Urbana-Champaign. 

For additional information:
Dr. Ranganathan Kumar: 407-823-4389 

Dr. Martin Richardson: 407-823-6819

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