Keynote Speakers  

The IRF'2013 program will include a number of Keynote Plenary Lectures by distinguished scientists in the different areas covered by the main theme of the conference, to provide thematic presentations of their most recent findings.

The names of the following Keynote Speakers and the titles of their presentations have already been confirmed (ordered by date of confirmation):

• E. A. Elsayed (USA)

• Noritsugu Umehara (Japan)

• Shaker A. Meguid (Canada)

• Xiong Zhang (China)

  Professor E.A. Elsayed 

Department of Industrial and Systems Engineering

Rutgers University

96 Frelinghuysen Road

Piscataway, NJ 08854,USA

elsayed@rci.rutgers.edu 

E. A. Elsayed is Professor II (Distinguished Professor) of the Department of Industrial and Systems Engineering, Rutgers University.  He is also the Director of the NSF/ Industry/ University Co-operative Research Center for Quality and Reliability Engineering. He was the Chair of ISE, Rutgers University from 1983 to 2001.   His research interests are in the areas of quality and reliability engineering and Production Planning and Control.  He is a co-author of Quality Engineering in Production Systems, McGraw Hill Book Company, 1989.  He is also the author of Reliability Engineering, Addison-Wesley, 1996.  These two books received the 1990 and 1997 IIE Joint Publishers Book-of-the-Year Award respectively. He has received many awards and honors and was the keynote speaker of many international conferences.

Dr. Elsayed is also a co-author of Analysis and control of Production Systems, Prentice-Hall, 2nd Edition, 1994.  His research has been funded by the DoD, FAA, NSF and industry.  Dr. Elsayed has been a consultant for AT&T Bell Laboratories, Ingersoll-Rand, Johnson & Johnson, Personal Products, AT&T Communications, BellCore and other companies.  He served as the Editor-in-Chief of the IIE Transactions and the Editor of the IIE Transactions on Quality and Reliability Engineering.  Dr. Elsayed is also the Editor of the International Journal of Reliability, Quality and Safety Engineering. He serves on the editorial boards of eight journals in different capacities.

Dr. Elsayed has been involved in accelerated life testing since 1987 when he developed a reliability prediction model for the first transatlantic fiber optics cable during his sabbatical at Bell Laboratories.  Since then he developed a general accelerated statistics-physics based model to predict reliability at normal operating conditions.  During the last twelve years he has been extending his work to the degradation modeling area and design of accelerated life testing plans.  He has verified his models by conducting extensive accelerated life testing on variety of products using the quality and reliability engineering laboratory at Rutgers.

Title of Presentation:

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  Professor Noritsugu Umehara 

Advanced Materials and Manufacturing Laboratory,

Mechanical Science and Engineering Department,

Graduate School of Engineering,

Nagoya University, JAPAN

Email: ume@mech.nagoya-u.ac.jp

Dr. Noritsugu Umehara is a professor in Department of Mechanical Science and Engineering at Nagoya University in Japan. He has interests in both fundamental and applied aspects of manufacturing and tribology, especially in new polishing method of advanced ceramic using magnetic field and water lubrication of advanced ceramics. He began his carrier at the Tohoku University in 1988 as a research associate in the Department of Mechanical Engineering before coming assistant professor in 1993, associate professor in 1995 and move to Nagoya University as Professor in 2003.

He received a Bachelor, a Master and a Doctor of Engineering from Tohoku University, Sendai, Miyagi in 1983, 1985 and 1988, respectively.

He published research papers more than 120 in various journals, and hold 6 Patents on Magnetic Fluid Grinding. Dr.Umehara received the JSME Young Engineering award in 1991, 1995 LaRoux K. Gillespie Outstanding Young Manufacturing Engineer Award from the society of manufacturing engineers in 1995, F.W. Tayler Medal from the CIRP in 1995 and JSME paper award in 2010.  He is member of the Japan Society of Mechanical Engineers (JSME), the Japan Society for Precision Engineering (JSPE), the Japan Society of Tribologist (JAST) and the Japan Society for Grinding Engineering.

Title of Presentation:

ULTRA LOW FRICTION OF AMORPHOUS CARBON NITRIDE WITH CONTROLLING NANO SURFACE STRUCTURE

ABSTRACT

Amorphous Carbon Nitride (CNx) coating is one of the promising materials among carbon system hard coatings used to obtain excellent mechanical properties. The mechanical properties and the friction coefficient of the coatings depend on their synthesis techniques. In particular, we reported that CNx coating showed a friction coefficient lower than 0.01 when slid against a Si₃N₄ ball in N₂. The mechanism of the low friction coefficient was considered to be the result of the sliding surface changing to a graphite-like structure by sliding in N₂. Since the friction coefficient of the graphite layer was not as low as that of CNx, the specific characteristic structure of graphite on the CNx could govern the low friction coefficient. It is important to understand the detailed mechanism of the low friction coefficient of CNx in the optimum design of a solid lubricant. The effects of both nitrogen atoms in the coating and from ambient N₂ gas on the transformation of surface layers of CNx were investigated. AES and XPS results demonstrated that the topmost layers of the coating changed to a graphite-like structure without nitrogen atoms when the friction coefficient decreased to below 0.01, and the graphitization of the topmost layers was attributed to the low friction coefficient in N₂ gas. We first indicated N atom exodiffusion from the CNx surface during friction. It was confirmed that the strength of topmost layer of CNx after sliding in dry Nitrogen was smaller than the as-deposited CNx. It can be considered that this CNx is quite smart that can change and adjust the proper material properties after sliding. I believe that we should develop such smart tribo surface as the future tribo material that has both properties of ultra low friction and wear.

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  Professor Shaker A. Meguid 

Director, Mechanics and Aerospace Design Laboratory

University of Toronto, CANADA

Email: meguid@mie.utoronto.ca

Professor Shaker Meguid obtained his Ph.D. in Applied Mechanics from UMIST, England. He taught different branches of Applied Mechanics in 4 continents, including Oxford University, Cranfield University (England), University of Toronto, Cairo University (Egypt) and Nanyang Technological University (NTU-Singapore). His research activities have contributed significantly to the areas of nanoengineering, computational mechanics, advanced and smart composites, fracture mechanics and failure prevention. He has published over 400 papers in leading tier-1 scientific journals and international conferences and symposia. He not only organised but also contributed to numerous symposia as keynote and plenary speaker. He is the founding Editor-in-Chief of Int. J of Mechanics and Materials in Design, Guest Editor to a number of Journals, Former Technical Associate Editor of ASME J. of Engineering Materials and Technology (for two consecutive terms), and a member of the editorial board of numerous journals. He is also the Editor of six international conference proceedings and author of two textbooks. He is the founding head of the Aerospace Division of NTU, Singapore. He holds the titles of Distinguished Visiting Professor in Tongji University (China), Porto University (Portugal), external examiner to Dublin Institute of Technology (Ireland), University of Putra Malaysia (Malaysia), and an Engineering Consultant to the United Nations. He is a lifetime senior member of AIAA, member of the American Academy of Mechanics, Professional Engineer in the Province of Ontario PEng, Chartered Engineer in Great Britain CEng, Fellow of ASME, and Fellow of IMechE. He works closely with the aerospace and automotive industries and is regularly approached by members of the media for clarification of engineering issues.  Professor Meguid and his students won many awards including the recent innovation award in nanoengineering by ASME. He was awarded the 2012 Ontario Professional Engineering Medal for his substantial contribution to R&D and advancing engineering knowledge.  He was also honored by the European Society of Experimental Mechanics by giving him the 2012 Robert Hooke Award for his outstanding contribution to the field of Experimental Mechanics applied to mechanical design and materials.

Title of Presentation:

NOVEL INTEGRITY ANALYSIS OF MECHANICAL SYSTEMS IN DYNAMIC CONTACT USING VARIATIONAL INEQUALITIES

ABSTRACT

Great strides have recently been made in the application of computational mechanics to the design of highly complex engineering systems. It has now become abundantly clear that advanced modelling techniques are central to the competitiveness of the industrialised nations. Excellent examples of this assertion are the computer-integrated design of the recent Boeing 777 aircraft, the collapsible foam-filled structures for the car of the next century and the design of finger implants. It is with this in mind that the author focuses his attention to a class of problems where dynamic contact mechanics plays a major role in dictating the mechanical integrity of the component/system. Three aspects of the work are accordingly examined. The first is concerned with the development of the appropriate dynamic variational inequalities expressions to accurately and consistently represent dynamic contact problems. The second is concerned with the development of robust solution algorithms that guarantee the accurate imposition of the kinematic contact constraint and avoid interpenetration of the mating bodies. The third is concerned with the integrity assessment of a number of realistic design problems involving intricate mechanical systems using the newly developed Variational inequalities algorithms.

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  Professor Xiong Zhang 

Director, Institute of Dynamics and Control

School of Aerospace

Tsinghua University, P. R. China

Email: xzhang@tsinghua.edu.cn

Professor Xiong Zhang obtained his Ph.D. in Computational Mechanics from Dalian University of Technology, China. He was supported by the Program for New Century Excellent Talents in Universities, the Ministry of Education of China from 2004 to 2008. He won second prize for Natural Science from the Ministry of Education of China in 2009 (first accomplisher), first prize for Natural Science from the Ministry of Education of China in 2008 (sixth accomplisher), Educational Innovation Award from Beijing Municipal Education Commission in 2003 and ICACM Fellows Award in 2011 in Taipei. He is a member of Chinese Association of Computational Mechanics, Vice Chairman of Beijing Association of Vibration Engineering, International Advisor of HKIE Transactions, and member of editorial board of International Journal of Computational Methods, Acta Mechanica Solida Sinica, International Journal of Mechanics and Materials in Design, Coupled Systems Mechanics, Chinese Journal of Computational Mechanics and Chinese Journal of Computer Aided Engineering. He focuses on the research in the field of computational mechanics (finite element methods, meshfree methods, etc.), impact dynamics, explosive mechanics and numerical analysis of engineering structures.

Title of Presentation:

RECENT DEVELOPMENTS ON MPM AND ITS APPLICATION IN IMPACT AND EXPLOSION SIMULATION

ABSTRACT

Dynamic response of material and structure under impact and blast loading involves extremely large deformation, multi-physics coupling and nonlinearities. Material Point Method (MPM), which makes use of both Lagrangian and Eulerian description of material, is suitable for modeling problems with extreme large deformation.

In this talk, the basic formulation of MPM and our recent developments on MPM for impact and explosion problems are briefly reviewed, including an efficient implementation of MPM, improved contact method, adaptive material point method, parallelization based on OpenMP, material point finite element method, hybrid FE-MP method and adaptive FE-MP method. A 3D explicit parallel MPM code, MPM3D, has been developed for the numerical simulation of impact and explosive problems using object-oriented design by C++ program language with Qt, VTK and CMake, and can be run on different platforms including Windows, Linux and Mac OS. Several constitutive models, equations of state (EOS) and failure models have been implemented, such as Johnson-Cook material model for metal, Holmqusit-Johnson-Cook model and RHT model for concrete, Drucker-Prager model for soil and rock, Mooney-Rivlin model for rubber, Gurson model for elastic-plastic solid with void, Polynomial EOS, Jones-Wilkins-Lee EOS and Gruneisen EOS.

Several numerical examples such as explosively driven flyer, shaped charge, debris cloud, projectile penetration of steel plate and reinforced concrete, slope slide and metal cutting are presented to demonstrate the application of MPM3D, which shows that MPM3D is a powerful tool for impact and explosion simulation.

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