Jing Feng, Xiaoyu Chong
Kunming University of Science and Technology, Kunming, 650093, China
EXTENDED ABSTRACT: Thermal barrier coatings (TBCs) serve as a crucial means to ensure the safety, stability, and prolonged service life of aerospace vehicle components exposed to elevated temperatures. However, a primary cause of TBC failure is the occurrence of thermal stresses during their preparation and in-service conditions, exceeding the interfacial bonding strength and damage tolerance limits. Given the current absence of efficient and precise experimental methods for quantifying thermal stresses in TBCs, we employ the techniques of materials genome engineering. This involves a synergistic combination of first-principles calculations, genetic algorithm-support vector machine (GA-SVR), multiscale coupled finite element simulations, and thermal shock tests. The development of core software facilitates high-throughput and intelligent computation of critical data. We establish parameter, experimental, and model databases, enabling automatic data transfer and interrelated modeling. Our efforts culminate in the preliminary establishment of a rapid quantification and assessment method for them设l stresses in TBCs. This research provides theoretical, methodological, and tool support for the selection of longlife novel TBC materials, coating structure design, and process improvement
Keywords: Multiscale Integrated Computations; Thermal Barrier Coatings; Thermal Stress; Machine Leaming;
Professor Jing Feng serves as the Dean of the School of Materials Science and Engineering at Kunming University of Science and Technology. He is recognized as a recipient of the National Thousand Talents Program, the "Zhuoqing" Talent Fund from the Central Military Commission. He conducted postdoctoral research at Harvard University and held the position of Research Associate at the Harvard School of Applied Science and Engineering. He collaborated with Professor David R. Clarke, a member of the U.S. National Academy of Engineering, and pioneered research in the field of lanthanide rare-earth tantalate ultra-high-temperature thermal barrier coating materials. Prof. Feng has published 268 SCI papers in renowned international journals such as Nature Communications, Acta Materialia, Physical Review B, and Applied Physics Letters. These publications have received over 9,000 citations. The outcomes of his work have been applied to multiple models of hypersonic rocket/missile engines and their exterior thermal protection, leading to significant generational advancements in the equipment.