Keynote Speakers|

Professor GUPTA Manoj, National University of Singapore, Singapore.

Dr Manoj Gupta was a former Head of Materials Division of the Mechanical Engineering Department and Director designate of Materials Science and Engineering Initiative at NUS, Singapore. He did his Ph.D. from University of California, Irvine, USA (1992), and postdoctoral research at University of Alberta, Canada (1992). He is currently among top 0.6% researchers as per Stanford’ List, among Top 1% Scientist of the World Position by The Universal Scientific Education and Research Network and among 1% among scientists as per ResearchGate. His international rank among Materials Researchers in World is currently at 1305.  To his credit are: (i) Disintegrated Melt Deposition technique and (ii) Hybrid Microwave Sintering technique, an energy efficient solid-state processing method to synthesize alloys/micro/nano-composites. He has published over 650 peer reviewed journal papers and owns two US patents and two Trade Secrets.  His current h-index is 79, citations greater than 21500 and reads greater than 100,000 (Research Gate). He has also co-authored eight books, published by John Wiley, Springer and MRF - USA. He is Editor-in-chief/Editor of twelve international peer reviewed journals. A multiple award winner, he actively collaborate/visit Japan, France, Saudi Arabia, Qatar, China, USA and India as a visiting researcher, professor and chair professor.

Prof. Stefano Mariani, Polytechnic University of Milan, Italy.

Stefano Mariani received an M.S. degree (cum laude) in civil engineering in 1995, and a Ph.D. degree in structural engineering in 1999; both degrees are from the Polytechnic University of Milan. He is currently a professor at the Department of Civil and Environmental Engineering of the Polytechnic University of Milan. He was a research scholar at the Danish Technical University in 1997, an adjunct professor at Penn State University in 2007, and a visiting professor at the Polytechnic Institute of New York University in 2009. He is a member of the Editorial Boards of Algorithms, International Journal on Advances in Systems and Measurements, Inventions, Machines, Micro and Nanosystems, Micromachines, and Sensors. He has been a recipient of the Associazione Carlo Maddalena Prize for graduate students (1996), and of the Fondazione Confalonieri Prize for PhD students (2000). He has co-authored around 300 journal and conference papers.His main research interests are: the reliability of MEMS that are subject to shocks and drops; the structural health monitoring of composite structures through MEMS sensors; numerical simulations of ductile fracture in metals and of quasi-brittle fracture in heterogeneous and functionally graded materials; extended finite element methods; the calibration of constitutive models via extended and sigma-point Kalman filters; and multi-scale solution methods for dynamic delamination in layered composites.

Speech title: Piezo-actuated MEMS testing devices for materials characterization at the microscale.

Speech abstract: Microelectromechanical systems (MEMS) are small-scale devices that have already revolutionized a number of high-tech fields, owing to their versatile functionalities. However, there is still concern regarding their reliability, especially when they have to operate in harsh environments characterized by high temperature and humidity levels. The unknown behavior of the relevant structural parts under varying loading, as affected by possible microfabrication defects, can spoil the long-term performance of the devices. In this work, the reliability problem has been addressed by investigating the fatigue-induced delamination processes in polysilicon-based MEMS structures. Ad-hoc designed test structures featuring a piezoelectric actuation have been designed, aiming to maximize the stress state in regions susceptible to the said delamination events. An optimization strategy for the topology/shape of the test structures has been then proposed by taking advantage of a numerical investigation, to allow for all the possible dissipative phenomena that characterize the response of the movable structures at the microscale, including their interaction with the surrounding fluid.

Prof. Yaowu Hu, Wuhan University, China.

Yaowu Hu, PhD, professor at Wuhan University, young leading scholar, recipient of national young talent program. Dr. Hu focuses on laser shock hybrid manufacturing research. From 2012 to 2017, Dr. Hu was in School of Industrial Engineering of Purdue University, doing research in the design, experimental, and modeling of scalable 3D manufacturing. He was a tenure-track assistant professor at University at Buffalo, SUNY, and served at NSF of USA as a panel reviewer. His works have been published at Science, International Journal of Machine Tools and Manufacture,Advanced Materials,Nano Letters,Applied Surface Science, and other high-standard journals for more than 40 times.

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