by Alec Arbia, Written Communications Assistant
Ummay Habiba, 5th year Ph.D. student in materials science and engineering (MSE), had two recent publications featured in the MDPI journal Materials.
Published in April of 2023, the first article is titled “Powder Spreading Mechanism in Laser Powder Bed Fusion Additive Manufacturing: Experiments and Computational Approach Using Discrete Element Method”. In Habiba’s study, the impact of powder spreading in Laser Powder Bed Fusion (LPBF) additive manufacturing was investigated, with a focus on the influence of various input parameters. Utilizing the Discrete Element Method (DEM) simulation tool, the effects on powder density and particle distribution were systematically explored across multiple layers. Beyond simulation her research also covers experimental measurements to unveil variations in powder density and particle size distributions on the construction plate. This comprehensive analysis provides valuable insights into the optimization of fabricated object quality in the dynamic realm of LPBF additive manufacturing.
Another article, titled “Powder Bed Thermal Diffusivity Using Laser Flash Three Layer Analysis”, was published in September of 2023. This article explores the intricate relationship between thermal diffusivity and mechanical properties in LPBF additive manufacturing. It focuses on the precise measurement of thermal diffusivity in the nickel-based super alloy Inconel718 (IN718). Additionally, comprehensive measurements at varying temperatures were conducted on a three-layered sample using laser flash three-layered analysis equipped with a dedicated powder cell. This article provides insights crucial for optimizing the LPBF process and enhancing the mechanical integrity of fabricated components.
For Habiba, her interest in research started in Bangladesh, the country where she grew up. There she realized materials science and engineering impacts every aspect of our lives and decided to pursue a career in mse. One of her key aspirations in research is to achieve breakthroughs that contribute to advancements in the manufacturing sectors.
Under the guidance of Professor Rainer Hebert, Habiba expressed her gratitude, stating, “I am very fortunate to have the opportunity to work with a supportive and professional supervisor who has provided me with a positive work environment and strong connections to the industry. Work doesn’t feel like work when you’re living your passion. I count my blessings daily for the opportunity to do what I love. It’s a privilege I don’t take for granted.”
Published: December 1, 2023