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Rapid Manufacturing of Engineered Nano-structure Laminar Articles via Ultrasonic Consolidation
Ken Johnson - President and CEO Solidica, Inc.
PhD. Candidate, Loughborough University
ABSTRACT - This talk will present recent laboratory results related to the identification and quantification of nano-grain regions formed in an Aluminum 3003 T0 material during the biaxial high frequency fully reversed loading conditions of the Ultrasonic Consolidation additive manufacturing process. Specifically, an analysis of the gradient change in sub-grain size throughout the layered structure will be made through a review of a sample as it transitions from the highly worked nano-grain interface region to larger equiaxed grain regions of the unworked portion of each layer. Finally, a summary discussion as to the potential impacts of this observed effect on the field of engineered additive manufactured articles will be made.
Biography
Ken Johnson is President of Solidica, Inc., a metals-based additive manufacturing and embedded sensor company based out of Ann Arbor, Michigan. In this role Mr. Johnson oversees and supports Solidica's growing research and commercialization activities. Currently Mr. Johnson is active on a wide variety of research initiatives sponsored by the National Science Foundation, Department of Energy, and the Department of Defense. Prior to joining Solidica Mr. Johnson was a Commercialization Executive with Delphi Corporation where he led technology assessment and new venture development activities. Preceding this, Mr. Johnson spent 10 years at the National Center for Manufacturing Sciences as a Director for a large number of collaborative research programs, including the prominent multi-year Rapid Prototyping Technology Advancement initiative where he led testing and evaluation of several metal deposition technologies such as spray metal, ultrasonic consolidation, selective laser sintering, kinetic spray and laser engineered net shaping. Mr. Johnson holds a Masters of Engineering degree in Manufacturing from the University of Michigan and a Bachelors of Science in Engineering from Olivet Nazarene University.
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