Abstract: This presentation will review recent developments in understanding and controlling light-matter interaction and material response associated with laser powder bed fusion additive manufacturing.  As part of the critical assessment of the physics of the process, validated hydrodynamic finite element model simulations have proven to be extremely valuable and can be used to inform rapid solidification microstructural models.  The talk will also cover new approaches to process optimization that have emerged from our modeling efforts which can improve material properties and part performance.  Prepared by LLNL under Contract DE-AC52-07NA27344.

Meeting url: https://primetime.bluejeans.com/a2m/live-event/ptvefrkf

Manyalibo J Matthews Ph.D. Division Leader, Materials Science Division, Lawrence Livermore National Laboratory Manyalibo Matthews is the Division Leader for the Materials Science Division within the Physical and Life Sciences Directorate. His expertise includes laser materials processing, laser-matter interaction science, process optimization of advanced manufacturing, and high-speed in situ characterization methods. Prior to his current role, Matthews served as Group Leader in the Materials Science Division and Program Group Leader for the Laser Material Interaction Group in the National Ignition Facility and Photon Science organization. Before joining the Laboratory, Matthews was a member of the Technical Staff at Bell Laboratories, focusing on optical microspectroscopy and managing projects aimed at developing Passive Optical Network prototypes. Matthews is currently a co-organizer for the Materials Research Society and Materials Science and Technology symposiums, a member of the Academic Advisory Board at Norfolk State University, and a Fellow of the Optical Society of America.

Manyalibo J. Matthews
Ph.D., Physics, Massachusetts Institute of Technology
B.S., Applied Physics, University of California, Davis

Ibo Matthews 
Materials Science Division Leader,
Physical & Life Sciences Directorate 
Lawrence Livermore National Laboratory (LLNL)