Electromagnetic Diagnostics For In-Situ Metal Additive Manufacturing

2022-06-15 Dr. Saptarshi Mukherjee, Applied Electromagnetic Research Engineer, Lawrence Liver

ABSTRACT :

Over recent years, advanced manufacturing (AM) of metals has become increasingly sophisticated with finer control of the build part and higher quality material properties. New manufacturing methods such as Computed Axial Lithography, directed energy deposition and powder bed fusion have enabled a wide breadth of geometries and feature sizes, such as cellular lattice structures, which exhibit impressive mechanical and thermal performance characteristics, and are particularly useful for next-generation lightweight and multi-functional engineering applications. Current characterization systems based on x-ray, optical, and mechanical interrogation struggle to measure dimensions, phase, and composition in manufacturing-relevant timescales even for relatively simple geometries and compositions. This motivates the need for new reliable and robust nondestructive measurement approaches that must form the foundation of future manufacturing processes. In this talk, I will discuss in-situ electromagnetic diagnostics that were developed at LLNL for real-time characterization of the metal AM process. Particularly I will focus on a millimeter-based technique for dynamically tracking droplets deposited during a liquid metal jetting-based droplet on-demand system. I will highlight both experimental and computational capabilities at LLNL which were employed to advance these capabilities.

Event Name

Seminars

Place

Online

Start Time

07.00 PM

End Time

08.00 PM

External Link

PDF to Talk