반도체공학부
fnctId=bbs,fnctNo=1284
Prof. Wentao Yan 초청 세미나 안내
- 작성일2026.05.28
- 수정일2026.05.28
- 작성자 이*은
- 조회수109
아래 내용과 같이 세미나를 개최하오니 많은 참여 바랍니다.
▶ 일시 및 장소
6월 1일(월) 14:00-15:00 Y19106호
▶ 연사
Prof. Wentao Yan
Professor, Department of Mechanical Engineering, National University of Singapore (NUS).
▶ 세미나 개요
The widespread application of additive manufacturing is limited by a lack of systematic understanding of the process-structure-property relationship. Our team has developed a series of high-fidelity multi-physics models. Using a multi-phase flow model coupling computational fluid dynamics and discrete element method, we successfully simulate the powder spreading process as well as spattering and denudation phenomena during powder melting. The powder melting model incorporates composition-dependent evaporation effects and a physics-informed heat source model, enabling accurate reproduction of melt pool flow and associated defects such as lack-of-fusion pores and keyhole pores. Using phase-field and cellular automaton methods, we have established microstructural evolution models at both grain scale and dendrite scale. By integrating actual geometric features (rough surfaces and pores), temperature field distribution, and microstructure, we employ crystal plasticity finite element models to accurately simulate mechanical properties and thermal stresses. These models demonstrate strong capabilities in revealing physical mechanisms and optimizing manufacturing processes, and have been extensively validated through experiments, particularly in-situ observations.