Please join us in welcoming back Li Yang, ISE alum and associate professor from the University of Louisville. He will discuss the geometry, process and properties of cellular structures in connection to additive manufacturing.
4290 Fitts-Woolard Hall
https://ncsu.zoom.us/j/91616704400?pwd=UTZZRmFVSE9MQVJZWkZyUVJCZEU3dz09
Meeting ID: 916 1670 4400
Passcode: 124219
Design of cellular structures and additive manufacturing: geometry, process and properties
With additive manufacturing (AM) rapidly becoming mainstream manufacturing technology, advanced design concepts such as cellular structures and topology optimization have attracted significant interests in both research and application. With topological regularity, the cellular structures exhibit both high designability and interpretability. There exist extensive literatures for cellular structure design from classic theories. However, with AM cellular structures, both the geometry design and processing impose unique new challenges. With the design modeling, the non-homogeneous boundary conditions with the geometry result in highly heterogeneous local mechanical behaviors within the cellular structure that could not be modeled by representative volume element (RVE) approach. This is particularly significant for the design of critical load bearing structures that are potentially subjected to failure. Further, with the process design of AM cellular structures, the various AM process characteristics significantly influence the material characteristics of small-dimension cellular features such as thin struts and thin walls, resulting in significant deviation from the established AM process-material knowledge base. In this presentation, some of these perspectives and results are discussed. These results suggest a potentially paradigm-shifting philosophy for design with AM structures, which integrates material, processing and geometry design as inputs and instead of the traditional cascading and decoupled approaches.
Li Yang received his Ph.D. degree from Edward P. Fitts Department of Industrial and Systems Engineering at North Carolina State University in 2011. He is currently an Associate Professor in the Department of Industrial Engineering at University of Louisville. Yang’s research interests focus on the design aspects of additive manufacturing, which initially focus on advanced structures and novel processes, but has expanded to other related topic areas in recent years. He is the recipient of the International Outstanding Young Researcher in Additive Manufacturing Award in 2016, and Emerald Engineering Outstanding Doctoral Research Award 2013. At University of Louisville, Yang is a member of the Additive Manufacturing Institute of Science and Technology (AMIST), and briefly served as interim co-director between 2022 and 2023. Outside of work, he enjoys various hobbies including soccer, running, music and food.
