Aurabinda Swain
Postdoctoral Researcher – Clarkson University
Will present a talk titled:
Numerical Model for Simulating Melt pool Dynamics, Phase Change and Microstructure Evolution for laser powder bed fusion process.
Abstract: Laser-based additive manufacturing is rapidly evolving, but achieving optimal mechanical properties and defect-free products remains a significant challenge due to the high-energy density of lasers and the dynamic nature of melt pools. Laser powder bed fusion (LPBF) process is a type of laser-based additive manufacturing. This study presents a comprehensive model to simulate layer-by-layer melting and microstructure formation in a hypoeutectic binary alloy (Al-Cu alloy used) powder bed subjected to a moving laser source. The model incorporates key physical phenomena including heat transfer, grain nucleation and growth, surface tension and buoyancy-driven flows, species transport, and the remelting of previous layers during multi-layered processing. By simulating the laser melting of Al-Cu alloys under various process parameters, this work provides insights into melt pool evolution, solute transport and segregation, and thermal transport. Furthermore, the model is used to investigate melting, local composition variations, and grain structure evolution for both single-layer and multi-layered processes, enabling a deeper understanding of microstructure formation and defect prediction in LPBF.
Date: September 27, 2024
Location: Snell 212
Time: 11:00am
ZOOM Link for virtual attendance:
https://clarkson.zoom.us/j/93541691606?pwd=cggjBnvRrYbr7mPOCqmmThM0lOOzOd.1
You can access this link by going to the Virtual Class & Recordings tab in Moodle.
Bio: Dr. Aurabinda Swain is a Postdoctoral Researcher in the Department of Mechanical and Aerospace Engineering at Clarkson University. He earned his Ph.D. in Mechanical Engineering from the Indian Institute of Technology (IIT) Bhubaneswar in 2024. Prior to his postdoctoral studies, he served as a Project Assistant at IIT Bhubaneswar from 2023 to 2024. Dr. Swain’s research interests lie in Computational Fluid Dynamics (CFD), Phase Change Materials (PCMs), solidification and melting processes, Thermal Energy Storage (TES), turbulence modeling, and fluid-structure interaction. He has a strong foundation in academia, having previously worked as an Assistant Professor in India for 3.5 years. Dr. Swain is actively engaged in the academic community, serving as a reviewer for the Thermal Science and Engineering Progress and Journal of Fluids Engineering. His contributions to the field are evidenced by his five peer-reviewed publications and four presentations at international conferences focused on thermal and fluid flow research