Events for February
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AME Seminar - CANCELED
Wed, Feb 12, 2025 @ 03:30 PM - 04:30 PM
Aerospace and Mechanical Engineering
Conferences, Lectures, & Seminars
Speaker: Pedro Ponte Castaneda, University of Pennsylvania
Talk Title: Soft Elastic Composites: Microstructure evolution, macroscopic multi-physics response, instabilities and associated soft modes
Abstract: Soft elastic composite materials can undergo large deformations under normal operating conditions and, in many applications, such as in robotics and prosthetics applications, they are designed with the objective of undergoing controlled deformation by means of externally applied magnetic, electrical, pneumatic or other types of fields. They include porous, particle- and fiber-reinforced rubbers, thermoplastic and magnetorheological elastomers, dielectric elastomer composites, polymer foams, muscle and other biological tissues. As a consequence of the finite deformations involved, their microstructure evolves with the deformation and their constitutive or rheological behavior can be highly nonlinear and strongly anisotropic. This presents a challenge for the application of homogenization methods, which were originally developed to characterize the effective material parameters of composites, such as, for example, the thermal conductivity of a two-phase composite material, or the Young’s modulus of an isotropic metal polycrystal. In this presentation, I will give an overview of several methods that have been recently developed to characterize the multi-physics constitutive response of soft composites, as well as the evolution of the microstructure and the possible development of instabilities in such material systems. In addition, I will present some explicit examples, including those leading to a certain type of ‘twining’ instabilities and associated soft modes of deformation.
Biography: Pedro Ponte Castañeda is Raymond S. Markowitz Faculty Fellow and Professor in the departments of Mechanical Engineering & Applied Mechanics, as well as Member ofthe Graduate Group in Applied Mathematics & Computational Science at the University of Pennsylvania. He earned a B.S. in Mechanical Engineering and a B.A. in Mathematicsfrom Lehigh University in 1982, and an S.M. in Engineering Sciences and a Ph.D. in Applied Mathematics from Harvard University in 1983 and 1986, respectively. Prior to joining Penn, he was Assistant Professor of Mechanical Engineering at the Johns Hopkins University (1987-90). He was also Professor of Mechanics at the École Polytechnique (2004-06). He has held visiting positions at the C.N.R.S. in Marseilles, the Department of Applied Mathematics and Theoretical Physics and Corpus Christi College at Cambridge University, as well as the University of Stuttgart. He is currently Associate Editor of the Journal of Mechanics and Physics of Solids and of the Journal of Elasticity. He is an ASME Fellow and his honors include the ASME Thomas J.R. Hughes Young Investigator Award (2000), the George H. Heilmeier Faculty Award for Excellence in Research from Penn’s School of Engineering and Applied Science (2007), the Humboldt Senior Research Award (2013) and the ASME Warner T. Koiter Medal (2016).
Host: AME Department
More Info: https://ame.usc.edu/seminars/
Webcast: https://usc.zoom.us/j/96060458816?pwd=8LmoG2q6vBCQubqqWpcizd2F1bxqsH.1Location: James H. Zumberge Hall Of Science (ZHS) - 252
WebCast Link: https://usc.zoom.us/j/96060458816?pwd=8LmoG2q6vBCQubqqWpcizd2F1bxqsH.1
Audiences: Everyone Is Invited
Contact: Tessa Yao
Event Link: https://ame.usc.edu/seminars/
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AME Seminar
Wed, Feb 19, 2025 @ 03:30 PM - 04:30 PM
Aerospace and Mechanical Engineering
Conferences, Lectures, & Seminars
Speaker: Kyriakos Vamvoudakis , Georgia Tech
Talk Title: Learning-based Model-Free Sensor and Actuator Selection in Intelligent Complex Adaptive Systems
Abstract: Intelligent complex adaptive systems (ICAS) are heterogeneous systems that integrate analog and digital components, along with communication channels through which these components exchange data. Some of the prime components of an ICAS -- having a measurable impact on its operational efficiency and productivity -- are its sensors and actuators. These are the devices that allow the ICAS to collect data from its environment, as well as to use these data to steer itself toward a desirable direction. Generally speaking, they should be carefully selected to ensure that the system has a good level of observability and controllability, though additional specifications may also be placed depending on the underlying application's specifics. This problem of properly choosing the ICAS' sensors (or actuators) is called the sensor (or actuator) selection problem. In this talk, I will present data driven actuator and sensor selection algorithms, which choose the actuators and sensors of the ICAS while maximizing resiliency. Specifically, model-free learning-based actuator and sensor selection schemes will be proposed to optimize metrics of controllability, observability, and attack resilience for ICAS. I will show how you can use reinforcement learning to select such sensors and actuators with state and output feedback in continuous and discrete-time systems. I will finally present simulation examples with large-scale systems.
Biography: Kyriakos G. Vamvoudakis was born in Athens, Greece. He received the Diploma (a 5-year degree, equivalent to a Master of Science) in Electronic and Computer Engineering from the Technical University of Crete, Greece in 2006 with highest honors. After moving to the United States of America, he studied at The University of Texas at Arlington with Frank L. Lewis as his advisor, and he received his M.S. and Ph.D. in Electrical Engineering in 2008 and 2011 respectively. During the period from 2012 to 2016 he was project research scientist at the Center for Control, Dynamical Systems and Computation at the University of California, Santa Barbara. He was an assistant professor at the Kevin T. Crofton Department of Aerospace and Ocean Engineering at Virginia Tech until 2018. He currently serves as the Dutton-Ducoffe Endowed Professor at The Daniel Guggenheim School of Aerospace Engineering at Georgia Tech. His expertise is in reinforcement learning, control theory, game theory, cyber-physical security, bounded rationality, and safe/assured autonomy. Dr. Vamvoudakis is the recipient of a 2019 ARO YIP award, a 2018 NSF CAREER award, a 2018 DoD Minerva Research Initiative Award, a 2021 GT Chapter Sigma Xi Young Faculty Award and his work has been recognized with best paper nominations and several international awards including the 2016 International Neural Network Society Young Investigator (INNS) Award, the Best Paper Award for Autonomous/Unmanned Vehicles at the 27th Army Science Conference in 2010, the Best Presentation Award at the World Congress of Computational Intelligence in 2010, and the Best Researcher Award from the Automation and Robotics Research Institute in 2011. He currently is a member of the IEEE Control Systems Society Conference Editorial Board, an Associate Editor of: Automatica; IEEE Transactions on Automatic Control; IEEE Transactions on Neural Networks and Learning Systems; IEEE Computational Intelligence Magazine; IEEE Transactions on Systems, Man, and Cybernetics: Systems; IEEE Transactions on Artificial Intelligence; Neurocomputing; Journal of Optimization Theory and Applications; and of Frontiers in Control Engineering-Adaptive, Robust and Fault Tolerant Control. He had also served as a Guest Editor for, IEEE Transactions on Automation Science and Engineering (Special issue on Learning from Imperfect Data for Industrial Automation); IEEE Transactions on Neural Networks and Learning Systems (Special issue on Reinforcement Learning Based Control: Data-Efficient and Resilient Methods); IEEE Transactions on Industrial Informatics (Special issue on Industrial Artificial Intelligence for Smart Manufacturing); and IEEE Transactions on Intelligent Transportation Systems (Special issue on Unmanned Aircraft System Traffic Management). He is also a registered Electrical/Computer engineer (PE), a member of the Technical Chamber of Greece, an Associate Fellow of AIAA, and a Senior Member of IEEE.
Host: AME Department
More Info: https://ame.usc.edu/seminars/
Webcast: https://usc.zoom.us/j/96060458816?pwd=8LmoG2q6vBCQubqqWpcizd2F1bxqsH.1Location: James H. Zumberge Hall Of Science (ZHS) - 252
WebCast Link: https://usc.zoom.us/j/96060458816?pwd=8LmoG2q6vBCQubqqWpcizd2F1bxqsH.1
Audiences: Everyone Is Invited
Contact: Tessa Yao
Event Link: https://ame.usc.edu/seminars/
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AME Seminar
Wed, Feb 26, 2025 @ 03:30 PM - 04:30 PM
Aerospace and Mechanical Engineering, USC School of Advanced Computing
Conferences, Lectures, & Seminars
Speaker: Jessica Zhang, Carnegie Mellon University
Host: The School of Advanced Computing
More Info: https://ame.usc.edu/seminars/
Webcast: https://usc.zoom.us/j/96060458816?pwd=8LmoG2q6vBCQubqqWpcizd2F1bxqsH.1Location: James H. Zumberge Hall Of Science (ZHS) - 252
WebCast Link: https://usc.zoom.us/j/96060458816?pwd=8LmoG2q6vBCQubqqWpcizd2F1bxqsH.1
Audiences: Everyone Is Invited
Contact: Tessa Yao
Event Link: https://ame.usc.edu/seminars/