Note: This is an archived event from 2016. Looking for this year's events?
October 5, 2016 4:00pm
Dr. Ibo Matthews of the Lawrence Livermore National Laboratory will give a special seminar in Additive Manufacturing. Selective laser melting (SLM) plays an important role in the field of additive manufacturing, enabling the design of complicated geometries that can produce parts rapidly and efficiently. However, despite the significant advances in SLM, the detailed micro- and mesoscale descriptions of the energy coupling, heat flow and mass transport are still not completely available. Here, we directly measure the absorptivity of metal powder layers to characterize energy coupling efficiency and explore melt pool dynamics and motion of ejected particles using high speed imaging. The size of the melt pool and velocity of ejected particles (spatter) from the powder bed is extracted from individual camera frames, revealing new mass transport mechanisms. Finite element simulations were performed to give further insights into the physics of the laser-material interaction and open the pathway to process improvements.
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About ADAPT - Alliance for the Development of Additive Processing Technologies
The Alliance for the Development of Additive Processing Technologies (ADAPT) is focused on making Colorado a worldwide leader in additive manufacturing.