Day 1 :
Texas A&M University, USA
Keynote: Space- from foray to habitation
Time : 10:05-10:30
David Hyland earned the S. B., M.S. and Ph.D. degrees at MIT in 1969, 1971 and 1973, respectively. Through 1983, Dr. Hyland wasrnstaff member of the MIT Lincoln Laboratory. Beginning in 1983, he led an advanced technology group at Harris Corporation andrnbecame Senior Scientist. He joined the University of Michigan in 1996 as Professor and Chairman of Aerospace Engineering. In 2003rnhe joined Texas A&M University as Associate Vice Chancellor, Associate Dean of Research, and Professor of Aerospace Engineering, and Physics. Most recently, Dr. Hyland assumed the position of Director of Space Science and Engineering Research.
In five decades of human space flight, no human has yet traveled in interplanetary space and missions have been a succession of relatively brief forays. But the future prosperity, and survival of humanity requires a habitationrnparadigm in which travelers journey to off-world locations in order to stay and work, ultimately creating a spacefaring society capable of harvesting the enormous resources of the Near Earth and main belt asteroids as well as planetary bodies. This plenary address discusses a plan for the human habitation of the solar system madernpossible by harnessing a variety of emerging mechanical and aerospace technologies. These include: Design of interplanetary spacecraft that counter the debilitating effects of zero gravity, advanced radiation shielding, lifernsupport systems, propulsion systems, and advanced trajectory designs. In the area of life support, habitation technology is an integrated, portable system of systems that enables small human groups to generate their ownrnconsumables, mine in situ resources, and replace their own tools. The constituent technologies, including autonomous control software, presently exist in some form but remain to be refined, integrated and harnessed.rnConcepts for interplanetary spacecraft that are sufficiently massive to provide travelers with a safe and healthy environment for prolonged missions can achieve the necessary mobility from both propulsion advances andrnintellectual advances in trajectory design that accomplish travel over immense distances with very little propellant consumption. We emphasize that none of the technologies mentioned are speculative; all are based on established principles and are at or near the necessary adaptation.
University of Maryland, USA
Keynote: Recent advances in dynamic system research: From vibration of distributed structural systems to vibration-based damage detection and infinitely variable transmission
Time : 10:30-10:55
Weidong Zhu is a Professor in the Department of Mechanical Engineering at the University of Maryland, Baltimore County, and th founder and director of its Dynamic Systems and Vibrations Laboratory and the Laser Vibrometry Laboratory. He received his doublernmajor BS degree in Mechanical Engineering and Computational Science from Shanghai Jiao Tong University in 1986, and his M.S. andrnPh.D. degrees in Mechanical Engineering from Arizona State University and the University of California at Berkeley in 1988 and 1994, respectively. He is a recipient of the 2003 National Science Foundation CAREER Award, the 2007 American Society for Nondestructive Testing Fellowship Award, the 2008 Chang Jiang Scholar Chair Professorship in General Mechanics from the Ministry of Education of China, and the 2009 Daily Record's Maryland Innovator of the Year Award. He is a Fellow of ASME and an Associate Editor of thernASME Journal of Vibration and Acoustics.
Some interesting results on the vibration and stability of distributed structural systems, vibration-based damage detection, and infinitely variable transmission will be reviewed. The vibration and stability of translatingrnmedia with time-varying lengths and/or velocities will be addressed. Two types of dynamic stability problems are considered: dynamic stability of translating media during extension and retraction, and parametric instabilitiesrnin distributed structural systems with sinusoidally or periodically varying velocities. A new spatial discretization and substructure method, which ensures that all the matching conditions of distributed components are satisfied,rnand hence uniform convergence of the solutions, will be discussed. The method overcomes the drawbacks of the classical assumed modes and component mode synthesis methods. A new nonlinear model of a slack cable with bending stiffness and arbitrarily moving ends is developed. Only one-tenth of elements are needed to achieve thernsame accuracy as that of the finite element method. The new methodologies will be applied to elevator systems. The vibration-based damage detection will address two major challenges in model-based damage detection:rnaccurate modeling of structures and the development of a robustness algorithm for identifying the locations and extent of damage. Finally, design, analysis, and control of a novel infinitely variable transmission will be discussed.Experimental results will be presented to validate the theoretical predictions.
University of Alberta, Canada
Time : 11:10-11:35
Yongsheng Ma is a Professor in the Department of Mechanical Engineering, University of Alberta (U of A), Canada. He joined U ofrnA in 2007. Before that, he had been with Nanyang Technological University, Singapore, since 2000. From 1993 to 2000, he was withrnNgee Ann Polytechnic and then the Singapore Institute of Manufacturing Technology (SIMTech). He received his B. Eng. from Tsing Hua University (1986), and both M.Sc. and Ph.D. degrees from Manchester University, UK (1990 and 1994). His main research areas include CADCAM, engineering informatics, feature-based product and process modelling, and product lifecycle management (PLM).
This talk is intended to highlight advanced modelling and application of engineering knowledge in productrndevelopment and process management in industries. Computer aided tools have been widely used in therndesign manufacturing activities. However, it seems clear that most of the tools are not readily able to incorporate engineering semantics into their solutions. It is a challenge for the industry to model and apply comprehensive engineering knowledge, constraints, procedures and concurrent aspects of design and manufacturing in arnsystematic and sustainable manner. The speaker intends to expand the scope of feature technology into more open engineering semantic modelling and provides a framework of technological solution for system integration andrninformation sharing. This talk presents a set of researched methods that can consistently represent and uniformly manage engineering semantics in the ever dynamic evolvement of modern enterprises. With a proposed commonrninfrastructure of product and process modelling, the interoperability among different computer systems is addressed based on a fine grain feature-based informatics approach. This talk will also cover some insightfulrncase studies that show the promising application prospects at different stages and in different areas of design and manufacturing. The plenary talk will provide some useful references, guidelines and helpful tips for engineeringrnsemantics teaching.
National Cheng Kung University, Taiwan
Time : 11:35-12:00
Yu-Lung Lo received his Ph.D. degree in Mechanical Engineering, University of Maryland, College Park, USA, in 1995. He has beenrnfaculty of the Mechanical Engineering Department, National Cheng Kung University, since 1996, where he is now a full professor andrndistinguished professor. Dr. Lo received the First-Class Research Award from NSC in 2005/2006, A-Class Research Award by NCKUrnin 2006, and the Dr. Ta-You Wu Award for Young Researchers from NSC in 2002. He was invited to be an invited speaker, keynoternspeaker, and plenary speaker in the international conferences. Currently, he is Chairman of Asian Society of Experiment Mechanicsrn(ASEM). His research interests include experimental mechanics, fiber-optic sensors, optical techniques in precision measurements, and biophotonics. He has authored over 100 journal papers cited around 850 times in ISI/SCI web. Now he is member of Society of Experimental Mechanics (SEM).
This Polarization errors with small cross-couplings and signal-fading in the single-mode (SM) fiber coil in the depolarized gyroscopes are usually appeared in the depolarized gyroscopes. In order to solve the problemsrnof polarization errors and signal-fading, a free-space unit matrix structure in the fiber coil designed by the Stokes parameter method is proposed to minimize the bias errors. The FOGs made use of the SM fiber can easily affectedrnby the environment because of the temperature changes and internally or externally induced stresses such as fiber bending or twisting. The effects induced in the SM fiber coil may produce linear birefringence and circular birefringence. The birefringence appears as nonreciprocal phase shift which causes the signal-fading in the fiberrncoil. Thus, the SM fiber is characterized and analyzed by a decomposition method, and then the SM fiber can be compensated as a free-space media by a polarization controller. In the new structure of the FOG by using the concept of free-space unit matrix, we analyze the bias error in the fiber optic gyroscope with the effects from angles of misalignments and extinction-ratio in IOC. The resultrnindicates that the new structure gives rise to lower the bias error in the FOG to about 10-4 °/h with a 1000 m longrnSM fiber. The results show if the Jones matrix of the SM fiber coil is more close to the unit matrix, the bias error will be lower. As the authors knowledge, this is the first idea using a free-space unit matrix structure in the SM fiber coil applied to fiber optic gyroscope.