Keynote Speakers
Prof. Marcelo H. Ang Jr.
National University of Singapore

Marcelo H. Ang, Jr. received the B.S. degrees (Cum Laude) in Mechanical Engineering and Industrial Management Engineering from the De La Salle University, Manila, Philippines, in 1981; the M.S. degree in Mechanical Engineering from the University of Hawaii at Manoa, Honolulu, Hawaii, in 1985; and the M.S. and Ph.D. degrees in Electrical Engineering from the University of Rochester, Rochester, New York, in 1986 and 1988, respectively. His work experience include heading the Technical Training Division of Intel's Assembly and Test Facility in the Philippines, research positions at the East West Center in Hawaii and at the Massachusetts Institute of Technology, and a faculty position as an Assistant Professor of Electrical Engineering at the University of Rochester, New York. In 1989, Dr. Ang joined the Department of Mechanical Engineering of the National University of Singapore, where he is currently a Professor. In addition to academic and research activities, he is actively involved in the Singapore Robot ic Games as its founding chairman. His research interests span the areas of robotics, mechatronics, automation, computer control, and applications of intelligent systems methodologies.

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Prof. Li Cheng
Hong Kong Polytechnic University

Chair Professor and Director of Consortium for Sound and Vibration Research (CSVR)

Dr. Li Cheng is currently a Chair Professor and Director of Consortium for Sound and Vibration Research (CSVR) at the Hong Kong Polytechnic University. He received his BSc degree from Xi'an Jiaotong University, China and Ph.D. degree from the Institut National des Sciences Appliquées de Lyon (INSA-Lyon), France. He became a faculty member at Laval University, Canada in 1992, rising up to the rank of Full Professor before joining Hong Kong PolyU in 2000. He was the Head of Department of Mechanical Engineering from 2011 to 2014. Dr. Cheng published extensively in the field of sound and vibration, structural health monitoring, smart structure and fluid-structure interaction. He currently serves as Deputy Editor-in-Chief of Journal of Sound and Vibration, Associate Editor of the Journal of the Acoustical Society of America, Associate Editor of Structural Health Monitoring: An International Journal and an editorial board member of a few other journals. Dr. Cheng is an elected Fellow of Canadian Academy of Engineering, a Distinguished Fellow of the International Institute of Acoustics and Vibration (IIAV), a Fellow of the Acoustical Society of America, the Acoustical Society of China, IMechE, Hong Kong Institution of Engineers and Hong Kong Institute of Acoustics. He was the President of the Hong Kong Society of Theoretical and Applied Mechanics. He is now a Board Director of IIAV (International Institutes of Acoustics and Vibration) and the Vice-president Asia Pacific of I-INCE (International Institutes of Noise Control Engineering).

Speech Title: Light-weight Structural Design for Exceptional Vibration and Acoustic Properties Based on Acoustic Black Hole Principles

Abstract: Structures featuring properties like light weight, high damping and sound-proofing etc. are much needed for numerous mechanical and aerospace applications. Unfortunately, the reduction in structural weight is often accompanied by a deterioration of mechanical properties including the ones mentioned above. This talk addresses this issue by exploiting the phenomenon of Acoustic Black Hole (ABH) from the perspective of light-weight structural design for achieving auxetic properties. ABH features remarkable slow wave and energy concentration effects. Upon a proper tailoring of the structural thickness, the phase velocity of the flexural waves gradually reduces alongside thickness thinning, thus entailing high energy concentration and effective energy dissipation using a small amount of damping materials. In addition, the reduced structural wave velocity allows the creation of acoustically slow waves so that subsonic sound radiation regions can be formed inside a structure vibrating above the critical frequency, the consequence of which is the impaired sound radiation efficiency and reduced sound radiation. These unique features show promise of the ABH-based technology for potential light-weight structural design with embedded ability for wave manipulation, vibration suppression, energy insulation, sound radiation reduction, energy harvesting etc. In this talk, some of the recent progress on ABH research made by the team led by the speaker and his close collaborators will be highlighted. Topics to be discuss would cover modelling and analysis methods, exploration of underlying mechanisms of various ABH-specific phenomena, ABH structural design and potential industrial applications.

Invited Speakers

Prof. Susumu Hara
Nagoya University, Japan

Susumu Hara received his BS, MS, and PhD degrees from Keio University, Tokyo, Japan in 1992, 1994, and 1996, respectively, all in engineering. From 1995 to 2000, he was a Research Fellow with the Japan Society for the Promotion of Science. From 1996 to 2000, he was a Visiting Researcher with the Faculty of Science and Technology, Keio University. From 1998 to 1999, he was a Visiting Scholar with the Department of Mechanical Engineering, University of California, Berkeley. In 2000, he joined the faculty of Toyota Technological Institute, Nagoya, Japan. In 2008, he joined the faculty of Nagoya University, Nagoya, Japan, where he is currently a Professor in the Department of Aerospace Engineering, Graduate School of Engineering. His current research interests include motion and vibration control of mechanical structures and spacecraft, nonstationary control methods, and control problems of man-machine systems. He is a member of the JSME, SICE, RSJ, IEEJ (Senior Member), JSPE, IEEE (Senior Member), AIAA (Senior Member), and JSASS.

Speech Title: Flying Robot Production Program for Mechanical and Aerospace Engineering Education

Abstract: Experience-based learning programs are very important in universities' mechanical and aerospace engineering departments to understand the relationship between classroom lectures on traditional theories, such as material mechanics, fluid dynamics, dynamics of machinery, and control engineering, and real mechanical systems phenomena. Generally, the real phenomena are defined by interactions of multiple theories. Meanwhile, the use of recent digital manufacturing technologies, such as 3D printers, CAD/CAM, and CAE should be leveraged for more recent educational content and methods. In these circumstances, the Department of Mechanical and Aerospace Engineering at Nagoya University introduced a flying robot production program to help provide a comprehensive understanding of mechanical and aerospace engineering. This invited talk presents the first year results of the novel program and shares the questionnaire survey that was used to assess the results.

Prof. Osman Adiguzel
Firat University, Turkey

Dr Adiguzel graduated from Department of Physics, Ankara University, Turkey in 1974 and received PhD- degree from Dicle University, Diyarbakir-Turkey. He studied at Surrey University, Guildford, UK, as a post doctoral research scientist in 1986-1987, and studied on shape memory alloys. He worked as research assistant, 1975-80, at Dicle University and shifted to Firat University, Elazig, Turkey in 1980. He became professor in 1996, and he has already been working as professor. He published over 80 papers in international and national journals; He joined over 100 conferences and symposia in international and national level as participant, invited speaker or keynote speaker with contributions of oral or poster. He served the program chair or conference chair/co-chair in some of these activities. In particular, he joined in last seven years (2014 - 2020) over 80 conferences as Keynote Speaker and Conference Co-Chair organized by different companies. He supervised 5 PhD- theses and 3 M.Sc- theses. Dr. Adiguzel served his directorate of Graduate School of Natural and Applied Sciences, Firat University, in 1999-2004. He received a certificate awarded to him and his experimental group in recognition of significant contribution of 2 patterns to the Powder Diffraction File – Release 2000. The ICDD (International Centre for Diffraction Data) also appreciates cooperation of his group and interest in Powder Diffraction File.

Speech Title: Shape Reversibility and Atomic Scale Reactions in Shape Memory Alloys

Abstract: Shape memory effect is a peculiar property exhibited by a series of alloy system called shape memory alloys. These alloys are temperature sensitive materials, and undergo structural changes by means of crystallographic transformations, called martensitic transformations with the variation of temperature and deformation. Shape memory effect is initiated by cooling and deformation processes and performed on heating and cooling after these treatments. On cooling from the parent phase region, ordered parent phase structures turn into the twinned martensite structure with lattice twinning, by means of thermal induced martensitic transformation. Twinned structures turn into the detwinned structures by means of stress induced martensitic transformation with the deformation. Strain energy is stored in the material with deformation and released upon heating, by recovering the original shape in bulk level, and cycles between original and deformed shapes on heating and cooling, respectively. Shape memory effect is performed thermally in a temperature interval depending on the forward and reverse transformation, on cooling and heating, respectively, and this behavior is called thermoelasticity. Thermal induced martensitic transformation occurs as martensite variants with the cooperative movement of atoms in <110>-type directions on {110}-type close packed planes of austenite matrix, by means of shear-like mechanism. Copper based alloys exhibit this property in metastable β-phase region, which has bcc-based structures. Lattice invariant shears are not uniform in these alloys, and the ordered parent phase structures martensitically undergo the non-conventional complex layered structures. The long-period layered structures can be described by different unit cells as 3R, 9R or 18R depending on the stacking sequences on the close-packed planes of the ordered lattice. The unit cell and periodicity is completed through 18 layers in direction z, in case of 18R martensite, and unit cells are not periodic in short range in direction z. In the present contribution, x-ray diffraction and transmission electron microscopy studies were carried out on two copper based CuZnAl and CuAlMn alloys. X-ray diffraction profiles and electron diffraction patterns exhibit super lattice reflections inherited from parent phase due to the diffusion less character of martensitic transformation. X-ray diffractograms taken in a long-time interval show that diffraction angles and intensities of diffraction peaks change with the aging time at room temperature. This result refers to a new transformation in diffusive manner.

Assoc. Prof. Yao Yan
University of Electronic Science and Technology of China, China

Dr Yao Yan is an associate professor in Engineering at the University of Electronic Science and Technology of China (UESTC). Between 2008 and 2014, he undertook his PhD at Tongji University in Shanghai on nonlinear dynamics of time-delayed systems, and was then awarded the Shanghai Excellent Graduates' Dissertation in 2016. During the PhD programme, he was funded by China Scholarship Council to visit the University of Aberdeen in 2012-2013. In 2014-2017, he joined the School of Aeronautics and Astronautics at the UESTC as a lecturer in mechanical engineering. In 2017, he was promoted to be an associate professor. He has been awarded the Young Scientists Fund of the National Natural Science Foundation of China (NSFC) and the General Program of NSFC on the study of nonlinear dynamics. Since 2012, Dr Yan has published over 20 high-impact peer-reviewed journal papers focusing on the studies of nonlinear dynamics. He is a frequent reviewer for a number of high-impact journals in nonlinear dynamics and control, e.g. Nonlinear Dyn. and Int. J. Mech. Sci..

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Accepted abstract & Full paper will be invited to give the presentation at ICMAA 2022