Conferences, Lectures, & Seminars
Events for April
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AME - Department Seminar
Wed, Apr 03, 2013 @ 03:30 PM - 04:30 AM
Aerospace and Mechanical Engineering
Conferences, Lectures, & Seminars
Speaker: Yogendra M. Gupta , Regents Professor of Physics Director of Institute for Shock Physics Department of Physics and Institute for Shock Physics Washington State University Pullman, WA 99164
Talk Title: Understanding Materials Dynamics under Rapid Impulsive Loading
Abstract:
Dynamic compression experiments (~5 to 200 GPa) subject materials to large compressions, deformations, and high temperatures on very short time scales (ps to üs) resulting in a rich array of physical and chemical changes. Credibly linking and understanding the dynamic response of materials in real-time across different length scales constitutes the major scientific challenge in the field. After a brief introduction about shock wave compression, this talk will summarize recent research activities, experimental developments, and future opportunities to understand condensed matter dynamics at high stresses and short times.
Wednesday, April 3, 2013
3:30 PM
Seaver Science Library, Room 150 (SSL 150)
Refreshments will be served at 3:15 pm.
Biography: Yogendra M. Gupta, Regents Professor in the Department of Physics and Director of the Institute for Shock Physics, has been a faculty member at Washington State University (WSU) since 1981. Prior to his appointment at WSU, he spent nearly seven years at the Stanford Research Institute (now SRI International) preceded by two years of postdoctoral research. Since 1970, Gupta has been engaged in experimental and theoretical research related to shock wave and high pressure compression of condensed matter. His work has emphasized real-time examination and understanding of microscopic processes using a variety of time-resolved measurements and related analyses (optical spectroscopy, x-ray diffraction, and several continuum methods) in a wide range of materials. Gupta and his collaborators have worked on a broad range of condensed matter phenomena: structural transformations, chemical reactions, and deformation and fracture. These studies have resulted in over 275 publications. Currently, Professor Gupta is leading a major experimental effort to establish the Dynamic Compression Sector at the Advanced Photon Source (Argonne), a DOE/NNSA supported user facility. Since joining WSU, he has supervised the work of more than 100 graduate students and research associates. Professor Gupta is a Fellow of both the American Physical Society (1991) and the American Association for the Advancement of Science (2002), and has served on numerous committees related to U.S. national security programs. In 2001, he received the American Physical Society's Shock Compression Science Award, the premier award in the field. In 2005, he was the recipient of Washington State University's highest faculty recognition, the Eminent Faculty Award.
Host: Veronica Eliasson
Location: Seaver Science Library (SSL) - 150
Audiences: Everyone Is Invited
Contact: Kristi Villegas
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AME Seminar
Fri, Apr 05, 2013 @ 02:00 PM - 03:00 PM
Aerospace and Mechanical Engineering
Conferences, Lectures, & Seminars
Speaker: Duà ¡an M. StipanoviÃâ¡, Associate Professor Department of Industrial and Enterprise Systems Engineering and Control and Decision Group at the Coordinated Science Laboratory University of Illinois at Urbana-Champaign
Talk Title: Control of Multi-Vehicle Systems
Abstract: In this talk, a number of control designs for controlling multi-vehicle systems will be presented. These control designs highly depend on the type of vehicles which are controlled such as differential drives, cars, helicopters or quadrotors. They also depend on the information that is available to vehicles and vehiclesââ¬â¢ objectives to be accomplished as well as various uncertainties including perturbations and delays. In addition to some simulation results a number of experimental results including autonomous and semi-autonomous (that is, teleoperated) ground vehicles (conducted in Mechatronics and Robotics Laboratories at the University of Illinois) and aerial vehicles (in collaboration with the Boeing Company) will be presented.
Host: Geoffrey Spedding
Location: Kaprielian Hall (KAP) - 144
Audiences: Everyone Is Invited
Contact: Kristi Villegas
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AME - Department Seminar
Wed, Apr 17, 2013 @ 03:30 PM - 04:30 PM
Aerospace and Mechanical Engineering
Conferences, Lectures, & Seminars
Speaker: Eric R. Homer, Assistant Professor in the Department of Mechanical Engineering at Brigham Young University
Talk Title: Computational Modeling of Amorphous and Crystalline Materials
Abstract: While the atomic-level processes regarding material behavior are often known, translating this knowledge to understand and predict material behavior at the macroscale can be a significant challenge. As such, computational materials modeling has emerged as a particularly useful tool to aid in the advancement of engineering materials. The work to be presented includes efforts to elucidate the phenomena controlling the mechanical behavior of amorphous metals as well as a method to simulate coupled compositional-microstructural evolution in crystalline materials.
Amorphous metals exhibit mechanical properties superior to their crystalline counterparts in many cases, but suffer from an inherent lack of ductility. This work provides new understanding of the shear localization process that ultimately leads to catastrophic failure. The insight is achieved through a through a new mesoscale model of amorphous metals that is capable of accessing experimentally relevant timescales. Additionally, a new Potts-Phase Field model for coupled composition-microstructure evolution is presented. The coupled model provides simultaneous evolution of grain structure and composition in a computationally efficient manner and promises to provide new insight into nuclear fuels research.
Biography: Eric R. Homer is an assistant professor in the Department of Mechanical Engineering at Brigham Young University. He received B.S. and M.S. degrees in Mechanical Engineering from Brigham Young University in 2006 and a Ph.D. in Materials Science & Engineering from Massachusetts Institute of Technology in 2010. Prof. Homer then spent one year as a postdoctoral appointee in the Computational Materials Science & Engineering at Sandia National Laboratories, Albuquerque, NM. He has 13 publications in the areas of the mechanical behavior of amorphous metals, microstructure characterization, atomic simulations and microstructural modeling.
Host: Dr. Oliver Franke
More Info: http://ae-www.usc.edu/seminars/4-17-13-Homer.shtml
Location: Seaver Science Library (SSL) - Room 150
Audiences: Everyone Is Invited
Contact: Kristi Villegas
Event Link: http://ae-www.usc.edu/seminars/4-17-13-Homer.shtml