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Keynote Speaker

Prof. Yoshihiko Uematsu,Gifu University, Japan

Yoshihiko Uematsu graduated from Department of Mechanical Engineering, Kyoto University in 1990, and got M.E from Graduate School of Engineering, Kyoto University in 1992. He completed his PhD work entitled “Mode I delamination of unidirectionally carbon fiber reinforced polymer matrix composite at elevated temperatures” at Kyoto University in 1995. His work was about creep-fatigue interaction effect on delamination behavior in CFRP. Then he worked as Assistant Professor in Department of Mechanical Engineering, Osaka University. His research topics were about fatigue properties and fatigue crack propagation of structural materials. During 2001-2002, he worked as a guest researcher in Delft University of Technology, the Netherlands. In 2004 he moved to Gifu University as Associate Professor in Department of Mechanical Engineering, and became full Professor in 2011. His paper entitled “Development of fatigue testing system for in-situ observation by an atomic force microscope and small fatigue crack growth behavior in α-brass” got the best paper award from The Japan Society of Mechanical Engineers (JSME) in 2004. His recent research interests are about fatigue fracture mechanisms in light-weight alloys, weldments, severely-deformed materials, and so on. He published more than 140 papers in peer-reviewed scientific journals. He is now a director of the Society of Materials Science, Japan (JSMS), executive secretary of Japan Welding Society, Tokai branch and representative member of The Japan Society of Mechanical Engineers (JSME).
Speech Title: Fatigue properties of severely-deformed light weight alloys
Abstract:
It is known that the severe plastic deformation (SPD) could results in very fine-grained microstructure, which could enhance mechanical properties based on Hall-Petch relationship. Multi-directional forging (MDF) is on of the SPD methods, in which the material is forged chaining the forging directions. The forging direction is changed for three times in one path, resulting in 0.8 engineering strain by MDFing. Such SPD induces ultrafine-grained microstructure, but at the same time, induces very strong texture In the present study, MDF was applied to the structural magnesium (Mg) alloy, AZ61, and the axial fatigue tests were conducted. The number of forging path was changed as 1, 3, 6 and 8, and the effect of forging condition on the fatigue behavior was investigated. The average grain size became smaller with increasing forging paths, and the tensile strengths increased in accordance with Hall-Petch relationship. The fatigue strengths increased with increasing forging path number up to 3 times. However, when the forging path number was 6 and 8, the fatigue strengths were nearly the same with or slightly decreased compared with 3-path specimen. Microstructural observation revealed that strong texture and grain boundary sliding in 6- and 8-path specimens had detrimental effect on the fatigue strengths. MDF was also applied to commercially pure Ti, and fatigue test results indicated that the fatigue strengths of pure Ti could be highly enhanced by MDFing.

 

Assoc. Prof. RATCHATIN CHANCHAROEN
Chulalongkorn University, Thailand

Dr. Ratchatin Chancharoen is currently an Associate Professor at the Mechanical Engineering Department, Chulalongkorn University, Thailand. He received his BS degree in mechanical engineering from Chulalongkorn University in 1991, MS degree in mechanical engineering from Oregon State University in 1994, and PhD degree in mechanical engineering from Chulalongkorn University in 2000. Dr. Ratchatin Chancharoen has twenty years experience in robotics research including both manipulators and mobile robots and ten years in teaching both Robotics and Mechatronics at the university level. During these years, he has designed and built more than twenty robots in various configurations and published more than 20 research papers and one text book entitled "Linear Control Systems" (in Thai). He is principal investigator and co-investigator of a number of research grants in robotics and also the manager of a number of industrial projects in design and control. His major research activities involve tele-operation and control of robotics manipulators and mobile robots using various kinds of sensors, especially force and vision. His current research is the design a telerobot, a new type of robot, to work closely with human to do a higher level of tasks. The telerobot is designed with lighter frame, less power consumption, small footprint controller, and higher level of intelligence, compared to the industrial robot, to safely work in our working space. This type of robot will be populated in the near future as more complex tasks are demanded. His main research interests are in the field of Robotics and Mechatronics including new parallel robot configuration, new hardware processor, electronics, control algorithm, and intelligence.
Speech Title: A Digital Discrete Fabrication and Digital Fabrication Ecosystem at Chulalongkorn university.
Abstract:
Digital fabrication is a fully automated manufacturing process to build up a desired 3D object. Basically, there are two techniques: additive (AM) and subtractive (SM) manufacturing processes. Additive Manufacturing builds up a three-dimensional object by successively depositing material in layers to form a desired shape while Subtractive Manufacturing is a process that successively cut material away from a solid block such that the remaining is a desired object. These two processes are process manufacturing. In the talk, we will introduce a novel technique, called digital discrete Fabrication, which fabricate a free form 3D object by assembling building blocks. Its fabrication’s head is revealed, and clip is used to demonstrate how it works. T. The 3D printing ecosystem and the collaboration projects at the university is also mentioned in the talk. ​



Assoc. Prof. Vadim Rashitovich Gasiyarov
Head of Department of Mechatronics, South Ural State University (National Research University), Russia

Vadim Rashitovich Gasiyarov graduated from the Magnitogorsk State Technical University named after G.I. Nosov in "electrical engineer" (specialization electric drive and automation of industrial plants and technological complexes”) in 2007. After his graduation he started working as electronics engineer of service department of automated control systems in OJSC Magnitogorsk Iron & Steel Works. He has been promoted to lead Engineer of Service of automated control systems and automated electric drive on Hot plate mill 5000 in OJSC Magnitogorsk Iron & Steel Works in a year. And the same time he began working as an Assistant Professor of department of automated electric drive and mechatronics on a part-time in Magnitogorsk State Technical University named after G.I. Nosov. In 2012 he successfully defended his PhD thesis “Development of the plan view pattern automatic control system of drives of hot plate mill”, which deals with contemporary problems of industrial engineering. Then he quitted the industrial plant and started working in Magnitogorsk State Technical University on a full time as Associate Professor of department of automated electric drive and mechatronics. Thanks to the professionalism and personal achievement, he was invited to South Ural State University (National Research University) as an Associate Professor of department of Theoretical Foundations of Electrical Engineering in 2013. In a year he founded new Department of Mechatronics in this university and became the head of it. He has an experience of Guest Professor, The National University of Science and Technology MISiS, Moscow invited him to do lecturing of special courses of electrical and industrial engineering. He is an author of 40 scientific publications, including 3 books and 18 scientific and research-and-production reports. He takes part in Organizing Committee of International Conference of Industrial Engineering 2015 and Editorial board of Russian Internet Journal of Electrical Engineering.
Speech Title: Improving the mechatronic system for automatic control of the reversing stands of mill 5000 
Abstract:
It is noted that when extending the range of products made by plate rolling mills, it becomes relevant to improve the algorithms of the automatic parameters control systems. We hereby present a structure that explains the SMS Demag AG concept of automatic control over stand roll gauge and gaps. This concept is implemented in the automatic gauge control system (AGCS) of Mill 5000, Magnitogorsk Iron and Steel Works. We describe the drawbacks of the AGCS that manifest when rolling <10 mm plates. The most serious drawback is the tear of metal pieces from the trailing edge, which is caused by the inappropriate functioning of the gauge assignment and adjustment system. We present the structural diagram of the gauge calculation system. We also describe the functions of a system for dynamic compensation of disturbances. We provide rationale for excluding the roll counter-bending and deformation correction signals.  The paper proposes a method to control hydraulic screwdowns, which is essentially about a quick increase in the inter-roll gap at the workpiece “trailing edge” during the last pass, which must be done when rolling thin plates. We analyze the oscillograms of signals describing the gauge interference when the proposed changes are implemented. We prove the technological efficiency of using the proposed control method on Mill 5000.  

 

 

© COPYRIGHTS RESEVERD | 2019 10th International Conference on Mechatronics and Manufacturing - January 21-23, 2019 / Bangkok, Thailand