Prof. Yuyuan Zhao, University of Liverpool, UK
Professor Yuyuan Zhao obtained his BEng and MSc degrees from Dalian University of Technology, and PhD degree from Oxford University. He worked as a Lecturer at Dalian University of Technology, a Research Associate at the MADYLAM Laboratory of CNRS, and a Research Fellow at Birmingham University, before he joined Liverpool University in 1998 as a Lecturer. He was subsequently promoted to Senior Lecturer, Reader and then Professor, and served as Head of the Centre for Materials and Structures from 2014 to 2016.
He is currently professor in materials engineering in the School of Engineering, the University of Liverpool. He is a Chartered Engineer (CEng) and a Fellow of the Institute of Materials, Minerals and Mining (FIMMM). Professor Zhao's current research is focused on the manufacture, characterisation and applications of porous metals and metal matrix syntactic foams.
He pioneered the Sintering and Dissolution Process (SDP) for manufacturing aluminium foam, which inspired the subsequent developments of several powder-based space-holder methods for manufacturing metal foams. He further invented the Lost Carbonate Sintering (LCS) process, a more versatile and cost-effective method for producing micro-porous metals. The LCS technology has led to the creation of Versarien, a highly successful start-up company which was floated on London Stock Market in 2013.
Professor Zhao was awarded the Ivor Jenkins Medal in 2015 by the Institute of Materials, Minerals and Mining for his contribution to powder metallurgy in developing and commercialising innovative powder based technologies for manufacturing metal foams.
Prof. Sergei Alexandrov, Beihang University, China
Institute for Problems in Mechanics, Russian Academy of Sciences, Moscow, Russia
Sergei Alexandrov is a Professor at Beihang University (under the 1000 Talent Plan program) and a Research Professor at the Laboratory for the Mechanics of Technological Processes at A. Ishlinskii Institute for Problems in Mechanics of the Russian Academy of Sciences. He received his Ph.D. in Physics and Mathematics in 1990 and D.Sc. in Physics and Mathematics in 1994. He worked as a Professor at Moscow Aviation Technology Technical University (Russia), a Visiting Scientist at ALCOA Technical Center (USA), GKSS Research Centre (Germany) and Seoul National University (South Korea), and was a Visiting Professor at Aveiro University (Portugal), University of Besancon (France) and Technical University of Malaysia (Malaysia). He is a member of the Russian National Committee on Theoretical and Applied Mechanics. Sergei Alexandrov has published more than 350 papers in journals, books and conference proceedings, including two monographs and around 190 papers in journals indexed in the Web of Science. He has participated in the scientific committee of several international conferences and served as a reviewer in a wide range of international journals. He is on the editorial board of several journals including Continuum Mechanics and Thermodynamics (Springer) and Structural Engineering and Mechanics (Technopress). His research areas are plasticity theory, fracture mechanics, and their applications to metal forming and structural mechanics.
Dr.LYDIA ANGGRAINI, President University, Indonesia
Lydia Anggraini received her M.Eng and Ph.D degree from Ritsumeikan University, Japan in 2008 and 2012, respectively. She studied Advanced Materials Science and Engineering in the Department of Mechanical Engineering, Ritsumeikan University. She joined Indonesia EPSON Industry Co., Ltd. in 2005. Since 2010, she has been a Research Assistant in the Advanced Materials Laboratory, Department of Mechanical Engineering, Ritsumeikan University, Japan. In 2013, she joined the Faculty of Engineering, President University, Jababeka, Cikarang, Indonesia where she is currently a Head of Study Program of Mechanical Engineering in President University. She is now engaged in research on microstructure control to create high mechanical properties of metal-matrix and ceramics-matrix composites, and its applications. She is now leading a research project under Collaborative Research Based on Industrial Demand "Electric Vehicle Development for Green City". 2017
Speech Title: Microstructure and Mechanical Properties of Copper-Iron Fabricated by Mechanical Milling and Continuous Sintering
Abstract: This research is to analyze the effect of mechanical milling on the microstructure and mechanical properties of copper-iron. The sample is fabricated by compacting, milling and sintering processes. Sintering process is carried out using continuous type machine with conveyor belt mesh and the furnace type is muffle. After that, it is cooled with natural water jacket process. Vicker hardness testing and tensile strength test is performed to determine the mechanical properties of copper-iron alloys that occur. The mean value of sample 1 hardness (before milling) was 39.8 HV. The mean value of sample hardness 2 (after milling) was 74.9 HV. The value of the yield strength (σ) of sample 1 is 17.597MPa, and the value of ductility (ε) is 0.119. The value of the yield strength (σ) of sample 2 is 18.547 MPa, and the value of ductility (ε) is 0.073. The test results and analysis showed that by shrinking the size of metal powder, by milling for 2 hours, the hardness and yield strength of the product can increase. Although, the product becomes more brittle which is indicated by the decreased ductility value.