A Brief introduction of the Speaker
Professor Jonghwan Suhr obtained his bachelor's degree in 1995 and his master's degree in 1997 from Sungkyunkwan University in South Korea. He earned his Ph.D. from Rensselaer Polytechnic Institute in the United States in 2005. From 2007 to 2010, he served as an assistant professor at the University of Nevada, and from 2010 to 2013, he held the same position at the University of Delaware. Currently, he is a professor at the School of Mechanical Engineering at Sungkyunkwan University. His primary research focuses on composites, environmentally friendly materials, elastomers, and 3D printing. He has published over 200 academic papers in top-tier international journals such as Composites Part B: Engineering, Carbon, Nano Research, Nano Letters, Additive Manufacturing, and Industrial Crops and Products, with an H-index of 43. He has led, coordinated, and participated in numerous national research projects and has established close and long-term collaborations with prominent companies such as Samsung, LG, and Hyundai. From 2018 to 2020, he served as the head of the Department of Polymer Science and Engineering at Sungkyunkwan University, and in 2023, he became the head of the Department of Mechanical Engineering. He has received multiple awards, including the Research Initiative Award from the U.S. Air Force Office of Scientific Research in 2011 and the Composite Materials Paper Award from the Korean Society for Composite Materials in 2023.
Abstract
Cellular and architected materials are referred to as mechanical metamaterials when applied in structural, load-bearing,or similar functions, By regulating porosity and strategically arranging, materials, employing them only in necessary areas, metamaterials are not only lighter than their fully solid equivalents but can also be engineered to achieve specific mechanical properties. Particularly, the structure and porosity of metamaterials can also be controlled to tailor thermal, acoustic,or electromagnetic properties. The development of various Additive Manufacturing (AM) techniques has greatly advanced the study of metamaterials. Furthermore, the development of laser powder bed fusion LPBF) technique allows the fabrication of geometries that are challenging or costly to be fabricated with conventional manufacturing technologies. In this study, we developed bio.inspired or metamaterials, and investigated their multifunctional properties, including compressive behavior, thermal characteristics,vibration attenuation,and sound absorption. The performance mechanisms and their trade-offs were carefully explained using various types of structures such as truss lattice, foam, and triply periodic minimal surface (TPMS).
