Conferences, Lectures, & Seminars
Events for October
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AME PhD Student Seminar
Fri, Oct 02, 2020 @ 03:00 PM - 04:00 PM
Aerospace and Mechanical Engineering
Conferences, Lectures, & Seminars
Speaker: Adie Alwen, USC AME PhD Student
Talk Title: Inverted cylindrical magnetron sputtering deposition on complex substrates
Abstract: This work seeks to investigate the influence of cathode target geometry on gas discharge plasmas and resulting deposition mechanisms during inverted cylindrical magnetron sputtering on non-planar 3D substrates.
Biography: Adie grew up in San Luis Obispo, California, and graduated from UCLA with a BS in Materials Engineering. Adie joined the Hodge Nanotechnology Research group in 2019 as a graduate researcher and Ph.D. student. Currently, Adie works on the synthesis of thin films and nanocrystalline microstructures, as well as plasma characterization. Following graduate studies, Adie aims to work in the aerospace industry in nanomaterials research and development.
Host: AME Department
More Info: https://usc.zoom.us/j/92144809085
Audiences: Everyone Is Invited
Contact: Christine Franks
Event Link: https://usc.zoom.us/j/92144809085
This event is open to all eligible individuals. USC Viterbi operates all of its activities consistent with the University's Notice of Non-Discrimination. Eligibility is not determined based on race, sex, ethnicity, sexual orientation, or any other prohibited factor. -
AME Seminar
Wed, Oct 07, 2020 @ 03:30 PM - 04:30 PM
Aerospace and Mechanical Engineering
Conferences, Lectures, & Seminars
Speaker: Fotis Sotiropolous, Stony Brook University
Talk Title: Tackling Complex Flow Problems via Numerical Simulation: From Jumping Fish and Heart Valves to River Flooding and Wind Energy
Abstract: Simulation-based engineering science has emerged as a powerful approach for tackling the major societal problems of our time related to human health, environmental sustainability, and renewable energy. Fluid mechanics problems frequently at the center of many of these challenges are often so complex that simulation-based research is the only viable approach for tackling them. Examples range from disease promoting blood flow patterns in the human heart and bioinspired swimming robots to extreme flooding in waterways and harnessing renewable energy from wind, currents, and waves. Accurate numerical simulation of such flows poses a formidable challenge to even the most advanced computational methods available today. In this talk I will discuss the advances we have made in my group to develop a powerful computational framework, the Virtual Flow Simulator (VFS), which can: handle arbitrarily complex geometries encountered in real-life applications; simulate fluid-structure interaction for rigid and flexible bodies; account for two-phase flows and free surface effects; and carry out coherent-structure-resolving simulations of turbulent flows in arbitrarily complex domains with dynamically evolving boundaries. The ability of the method to yield striking new insights into the physics of a broad range of real-life problems will be demonstrated by discussing applications in aquatic biology, cardiovascular engineering, turbulence and transport processes in natural waterways, and wind and marine and hydrokinetic energy. Future grand challenges and opportunities for simulation-based fluid mechanics research will also be discussed.
Biography: Fotis Sotiropoulos serves as Dean of the College of Engineering and Applied Sciences and SUNY Distinguished Professor of Civil Engineering at Stony Brook University. Before joining Stony Brook University, he was the James L. Record Professor of Civil Engineering; Director of the St. Anthony Falls Laboratory; and Director of the EOLOS wind energy research consortium at the University of Minnesota, Twin Cities (2006-2015). Prior to that, he was on the faculty of the School of Civil and Environmental Engineering at the Georgia Institute of Technology, with a joint appointment in the G. W. Woodruff School of Mechanical Engineering (1995-2005). His research focuses on simulation-based engineering science for tackling complex, societally relevant fluid mechanics problems in energy, environment and human health applications. He has authored over 190 peer reviewed journal papers and book chapters and his research results have been featured on the cover of several prestigious journals. He has been awarded the 2019 American Geophysical Union (AGU) Hydrology Days Borland Lecture in Hydraulics, the 2017 Hunter Rouse Hydraulic Engineering Award from the American Society of Civil Engineers (ASCE), a 2014 distinguished lecturer of the Mortimer and Raymond Sackler Institute of Advanced Studies at Tel Aviv University, and a Career Award from the National Science Foundation. Sotiropoulos is a Fellow of the American Physical Society (APS) and the American Society of Mechanical Engineers (ASME) and has twice won the APS Division of Fluid Dynamics Gallery of Fluid Motion (2009, 2011).
Host: AME Department
More Info: https://usc.zoom.us/j/93818975375
Webcast: https://usc.zoom.us/j/93818975375Location: Online event
WebCast Link: https://usc.zoom.us/j/93818975375
Audiences: Everyone Is Invited
Contact: Tessa Yao
Event Link: https://usc.zoom.us/j/93818975375
This event is open to all eligible individuals. USC Viterbi operates all of its activities consistent with the University's Notice of Non-Discrimination. Eligibility is not determined based on race, sex, ethnicity, sexual orientation, or any other prohibited factor. -
Advanced Manufacturing Seminar Series
Fri, Oct 09, 2020 @ 10:00 AM - 11:30 AM
Aerospace and Mechanical Engineering
Conferences, Lectures, & Seminars
Speaker: Dr. Qiang Huang, USC
Talk Title: Engineering-Informed Machine Learning for Shape Distortion Control in Additive Manufacturing
Abstract: Geometric shape accuracy is an important quality measure for products built by additive
manufacturing (AM) processes. With increased availability of AM product data and advances in computing,
Machine Learning for AM (ML4AM) has become a viable strategy for enhancing printing performance. We
propose a Shape Deviation Generator (SDG) under an engineering-informed convolution formulation to
facilitate the learning and prediction of 3D printing accuracy. Shape deviation representation, individual layer
input function and transfer function for the convolution formulation are proposed and derived. A deconvolution
problem for identifying the convolution kernel is formulated to captures the inter-layer interaction effects in the
layer-by-layer fabrication processes. The printed 2D and 3D shapes via a stereolithography (SLA) process are
used to demonstrate the proposed modeling framework and derive new process insights for AM processes.
Biography: Dr. Qiang Huang is currently a Professor at the Daniel J. Epstein Department of Industrial and Systems Engineering, University of Southern California (USC), Los Angeles. He was the holder of Gordon S. Marshall Early Career Chair in Engineering at USC from 2012 to 2016. He received National
Science Foundation CAREER award in 2011 and IEEE Transactions on Automation Science and Engineering Best Paper Award from IEEE Robotics and Automation Society in 2014. He is Department Editor for IISE Transactions, Associate Editor for ASME
Transactions, Journal of Manufacturing Science and Engineering, and a member of the Editorial Board for Journal of Quality Technology. He also served an Associate Editor for IEEE Transactions on Automation Science and Engineering and for IEEE Robotics and Automation Letters.
Host: AME Department
More Info: Please register for this webinar at: https://usc.zoom.us/webinar/register/WN_wxCrLd9yTaCOQH81EMMvSA
Webcast: Please register for this webinar at: https://usc.zoom.us/webinar/register/WN_wxCrLd9yTaCOQH81EMMvSAMore Information: Adv Mfg Seminar Fall 2020_Qiang Huang.pdf
Location: Online event
WebCast Link: Please register for this webinar at: https://usc.zoom.us/webinar/register/WN_wxCrLd9yTaCOQH81EMMvSA
Audiences: Everyone Is Invited
Contact: Tessa Yao
Event Link: Please register for this webinar at: https://usc.zoom.us/webinar/register/WN_wxCrLd9yTaCOQH81EMMvSA
This event is open to all eligible individuals. USC Viterbi operates all of its activities consistent with the University's Notice of Non-Discrimination. Eligibility is not determined based on race, sex, ethnicity, sexual orientation, or any other prohibited factor. -
AME PhD Student Seminar
Fri, Oct 09, 2020 @ 03:00 PM - 04:00 PM
Aerospace and Mechanical Engineering
Conferences, Lectures, & Seminars
Speaker: Sina Heydari, USC AME PhD Student
Talk Title: Hierarchical control in sea star inspired locomotion
Abstract: There is a growing effort to understand decentralized control mechanisms, particularly in application to robotic systems with distributed sensors and actuators. Sea stars, being equipped with hundreds of tube feet, are an ideal model system for studying decentralized sensing and actuation. The activity of the tube feet is orchestrated by a nerve net that is distributed throughout the body; there is no central brain. We developed mathematical models of the biomechanics of the tube feet and the sea star body. We then formulated hierarchical control laws that capture salient features of the sea star nervous system. Namely, at the component level, the individual tube feet follow a state-dependent feedback controller. At the system level, a directionality command is communicated to all tube feet. We studied the locomotion gaits afforded by this control model. We find that these minimally-coupled tube feet coordinate to generate robust forward locomotion on different terrains. Our model also predicts different gait transitions consistent with our experiments performed on Protoreaster nodosus. These findings offer a new paradigm for walking using soft actuators, with potential applications to autonomous robotic systems.
Biography: Sina Heydari is a Ph.D. candidate working in Dr. Kanso's Bio-inspired motion lab. His research focuses on decentralized sensory-motor control in sea stars and hydrodynamic interaction of passive swimmers in potential flow. Sina received his B.S. in Mechanical Engineering from Sharif University and his M.S. in Mechanical Engineering from USC.
More Info: https://usc.zoom.us/j/92144809085
Audiences: Everyone Is Invited
Contact: Christine Franks
Event Link: https://usc.zoom.us/j/92144809085
This event is open to all eligible individuals. USC Viterbi operates all of its activities consistent with the University's Notice of Non-Discrimination. Eligibility is not determined based on race, sex, ethnicity, sexual orientation, or any other prohibited factor. -
AME Seminar
Wed, Oct 14, 2020 @ 03:30 PM - 04:30 PM
Aerospace and Mechanical Engineering
Conferences, Lectures, & Seminars
Speaker: Shilpa Khatri, University of California Merced
Talk Title: Fluid-Structure Interactions within Marine Phenomena
Abstract: To understand the fluid dynamics of marine phenomena fluid-structure interaction problems must be solved. Challenges exist in developing numerical techniques to solve these complex flow problems with boundary conditions at fluid-structure interfaces. I will present details of two different problems where these challenges are handled: (1) modeling of pulsating soft corals and (2) simulations of crab odor-capture organs. Both of these problems will be motivated by field and experimental work in the marine sciences. I will discuss these related data and provide comparisons with the modeling.
Biography: Shilpa Khatri received her Ph.D. in 2009 from the Courant Institute of Mathematical Sciences (NYU). After a postdoctoral position in the Department of Mathematics at the University of North Carolina at Chapel Hill, she joined the faculty in Applied Mathematics at UC Merced in 2014. The focus of her research is fluid dynamics arising in the context of marine phenomena, such as the transport of nutrients, organisms, and pollutants in the ocean. She designs numerical methods for mathematical models that she develops and analyzes while comparing with experimental data - specifically for fluid-structure interactions and multiphase flows.
Host: AME Department
More Info: https://usc.zoom.us/j/92600319795
Webcast: https://usc.zoom.us/j/92600319795WebCast Link: https://usc.zoom.us/j/92600319795
Audiences: Everyone Is Invited
Contact: Tessa Yao
Event Link: https://usc.zoom.us/j/92600319795
This event is open to all eligible individuals. USC Viterbi operates all of its activities consistent with the University's Notice of Non-Discrimination. Eligibility is not determined based on race, sex, ethnicity, sexual orientation, or any other prohibited factor. -
AME PhD Student Seminar
Fri, Oct 16, 2020 @ 03:00 PM - 04:00 PM
Aerospace and Mechanical Engineering
Conferences, Lectures, & Seminars
Talk Title: Automated Stratified Wake Classification
Abstract: There has been increasing interest in how and whether early wake information coming from body geometry and initial conditions can persist into a long-lived structure in a stratified fluid. As the wake evolves, the wake goes through various flow regimes mapped out in Re and Fr parameter space. In this talk, I will propose an automated pattern detection algorithm that classifies modes from Dynamic Mode Decomposition of a wake based on criterias set by the characteristics of each regime. Wake data from both experiment and simulation are explored to improve the robustness of this classifier, especially when the flow information is limited spatially and contaminated by noise.
Biography: Chris Ohh is a Ph.D. student under Dr. Spedding. Her research focuses on identifying traceable stratified wake signatures from various initial conditions. She earned both a B.S. and M.S. in Mechanical Engineering from USC.
Host: AME Department
More Info: https://usc.zoom.us/j/92144809085
Audiences: Everyone Is Invited
Contact: Christine Franks
Event Link: https://usc.zoom.us/j/92144809085
This event is open to all eligible individuals. USC Viterbi operates all of its activities consistent with the University's Notice of Non-Discrimination. Eligibility is not determined based on race, sex, ethnicity, sexual orientation, or any other prohibited factor. -
AME Seminar
Wed, Oct 21, 2020 @ 03:30 PM - 04:30 PM
Aerospace and Mechanical Engineering
Conferences, Lectures, & Seminars
Speaker: Mitul Luhar, USC
Talk Title: Tunable Porous and Patterned Surfaces for Turbulence Control
Abstract: Control of wall-bounded turbulent flows has been an important area of research for several decades. However, the development of effective control techniques has been hindered by the limited availability of computationally tractable models that can guide design and optimization. This talk describes extensions of the resolvent analysis formalism that seek to address this limitation. Under the resolvent formulation, the turbulent velocity field is expressed as a superposition of propagating modes (resolvent modes) identified via a gain-based decomposition of the Navier-Stokes equations. Control is introduced into this framework via changes to the boundary conditions or through additional forcing terms in the governing equations. These changes alter the structure and gain of resolvent modes, whereby a reduction in gain is shown to be indicative of mode suppression and drag reduction. This modeling framework reproduces previous observations for passive control techniques such as sharkskin-inspired riblets, compliant walls, and anisotropic porous materials with minimal computation. Ongoing work builds on these observations to develop optimization routines for riblet shape and to design, fabricate, and test porous materials that can passively control turbulent flows
Biography: Mitul Luhar joined the Department of Aerospace and Mechanical Engineering at USC as Assistant Professor in January 2015 and was appointed as the Henry Salvatori Early Career Chair in 2020. He has received the AFOSR Young Investigator Program award as well as the NSF Career award. Prior to joining USC, Mitul was a Postdoctoral Scholar in the Graduate Aerospace Laboratories at Caltech. He earned his Ph.D. in Civil and Environmental Engineering from MIT in 2012, and his B.A. and M.Eng. degrees in Engineering from Cambridge University in 2007.
Host: AME Department
More Info: https://usc.zoom.us/j/96299159490
Webcast: https://usc.zoom.us/j/96299159490Location: https://usc.zoom.us/j/96299159490
WebCast Link: https://usc.zoom.us/j/96299159490
Audiences: Everyone Is Invited
Contact: Tessa Yao
Event Link: https://usc.zoom.us/j/96299159490
This event is open to all eligible individuals. USC Viterbi operates all of its activities consistent with the University's Notice of Non-Discrimination. Eligibility is not determined based on race, sex, ethnicity, sexual orientation, or any other prohibited factor. -
Advanced Manufacturing Seminar Series
Fri, Oct 23, 2020 @ 10:00 AM - 11:30 PM
Aerospace and Mechanical Engineering
Conferences, Lectures, & Seminars
Speaker: Dr. Jian Cao, Northwestern University
Talk Title: Manufacturing -“ An Integration Platform
Abstract: Manufacturing translates ideas, innovation and raw materials into products used by societies as a driving force for raising their living standards. To enhance the versatility of manufacturing processes and to fully integrate design and manufacturing for system optimization, research efforts at NIMSI are rooted in
discovering new processes for flexible, personalized and secure manufacturing, and in enhancing system optimization by using the combination of the ICME (integrated computational materials engineering) and datadriven approaches. This talk will provide an overview of these activities and then focus on selected processes
and their fundamentals, and techniques including machine learning to achieve better process outcomes and faster predictions compared to conventional methods. The processes to be highlighted include rapid dieless sheet forming for producing three-dimensional sheet parts without geometry-specific tooling, and metal-based powder-blown additive manufacturing.
Biography: Dr. Cao (MIT 95, MIT 92, SJTU 89) is the Cardiss Collins Professor, Director of Northwestern Initiative for Manufacturing Science and Innovation, and an Associate Vice President for Research (AVPR) at Northwestern University. She served
at the National Science Foundation as a program director for two years. Professor Cao is an elected Fellow of the American Association for the Advancement of Science (AAAS), ASME, SME, and of the International Academy for Production Engineering
(CIRP). Her major awards include the ASME Milton C. Shaw Manufacturing Research Medal (2020), SME Gold Medal (2020), Vannevar Bush Faculty Fellowship from DoD (2019), Charles Russ Richards Memorial Award (2017) from ASME and Pi Tau
Sigma, SME Frederick W. Taylor Research Medal (2016), ASME Blackall Machine Tool and Gage Award (2012, 2018), ASME Young Investigator Award (2006) from Applied Mechanics Division, and the NSF CAREER Award. Prof. Cao is the Editor-in-Chief of the Journal of Materials Processing Technology. She
served as President of the SME North America Manufacturing Research Institute, and Chair of ASME Manufacturing Engineering Division. She is a recipient of the ASME Dedicated Service Award (2011). As an AVPR, Prof. Cao fosters the collaboration between disciplines across and beyond Northwestern. She is a Board
member of mHUB, Chicago's first innovation center focused on physical product development and manufacturing.
Host: AME Department
More Info: Registration link: https://usc.zoom.us/webinar/register/WN_4I2SgeI-SJGH8Fcu1JtSqA
Webcast: Registration link: https://usc.zoom.us/webinar/register/WN_4I2SgeI-SJGH8Fcu1JtSqALocation: Online event
WebCast Link: Registration link: https://usc.zoom.us/webinar/register/WN_4I2SgeI-SJGH8Fcu1JtSqA
Audiences: Everyone Is Invited
Contact: Tessa Yao
Event Link: Registration link: https://usc.zoom.us/webinar/register/WN_4I2SgeI-SJGH8Fcu1JtSqA
This event is open to all eligible individuals. USC Viterbi operates all of its activities consistent with the University's Notice of Non-Discrimination. Eligibility is not determined based on race, sex, ethnicity, sexual orientation, or any other prohibited factor. -
AME Seminar
Wed, Oct 28, 2020 @ 03:30 PM - 04:30 PM
Aerospace and Mechanical Engineering
Conferences, Lectures, & Seminars
Speaker: Ashlee N. Ford Versypt, Oklahoma State University
Talk Title: Systems Biomedicine and Pharmaceutics: Multiscale Modeling of Tissue Remodeling and Damage
Abstract: Dr. Ford Versypt leads the Systems Biomedicine and Pharmaceutics research lab, which develops and uses multiscale systems engineering approaches including mathematical modeling and computational simulation to enhance understanding of the mechanisms governing tissue remodeling and damage as a result of diseases and infections and to simulate the treatment of those conditions to improve human health. The lab specializes in (a) modeling mass transport of biochemicals through heterogeneous porous materials-”primarily extracellular matrices-”that change morphology dynamically due to the influence of chemical reactions and (b) modeling dynamic, multi-species biological systems involving chemical, physical, and biological interactions of diverse, heterogeneous cell populations with these materials and the chemical species in tissue microenvironments. In this seminar, vignettes of three lines of research will be highlighted including (1) glucose-stimulated damage to kidney cells during diabetes, (2) metastatic cancer spread, and (3) viral-damage and immune-induced damage in SARS-CoV-2 infected lung tissue. The work is currently supported by an NSF CAREER award and an NIH R35 MIRA grant.
Biography: Ashlee N. Ford Versypt leads the Systems Biomedicine and Pharmaceutics Laboratory. The long-term goal for her research program is to develop multiscale mathematical and computational models to enhance understanding of the mechanisms governing tissue remodeling and damage as a result of diseases and infections and to simulate the treatment of those conditions to improve human health. The Systems Biomedicine and Pharmaceutics Laboratory specializes in modeling kinetics and transport processes involved in biological and chemical interactions related to both physiological microenvironments and engineered biomedical and pharmaceutical systems, particularly those involved in tissue damage and treatment. Her research program is funded by the National Science Foundation and the National Institutes of Health. Additionally, Dr. Ford Versypt also disseminates educational scholarship through publications, presentations, and software related to chemical engineering instruction, computational activities, student development, and outreach.
While earning her Ph.D. at the University of Illinois at Urbana-Champaign, Dr. Ford Versypt was awarded the Department of Energy Computational Science Graduate Fellowship (DOE CSGF) and the National Science Foundation Graduate Research Fellowship. In 2013, Dr. Ford Versypt was recognized as the Frederick A. Howes Scholar in Computational Science, which is awarded annually to a recent alumnus of the DOE CSGF for outstanding leadership, character, and technical achievement. In 2012-2014, Dr. Ford Versypt was a postdoctoral research associate in the Department of Chemical Engineering at the Massachusetts Institute of Technology. Dr. Ford Versypt is presently a Tenured Associate Professor in the School of Chemical Engineering at Oklahoma State University (OSU) where she has been faculty since 2014. She will relocate to the Department of Chemical and Biological Engineering at the University at Buffalo, The State University of New York in January 2021.
Dr. Ford Versypt has received a number of awards for her research, teaching, and service including the NSF CAREER Award, ASEE Chemical Engineering Ray W. Fahien Award, ASEE Midwest Section Outstanding Service Award, AIChE 35 Under 35, OSU Outstanding Achievement for the Mentorship of Women, OSU College of Engineering, Architecture and Technology Excellent Teacher Award, and Joseph J. Martin Award for best paper in the ChE Division at the 2014 ASEE Annual Meeting. She is the 2020-2021 Chair of the ASEE Chemical Engineering Division.
Host: AME Department
More Info: https://usc.zoom.us/j/94175981194
Webcast: https://usc.zoom.us/j/94175981194Location: Online event
WebCast Link: https://usc.zoom.us/j/94175981194
Audiences: Everyone Is Invited
Contact: Tessa Yao
Event Link: https://usc.zoom.us/j/94175981194
This event is open to all eligible individuals. USC Viterbi operates all of its activities consistent with the University's Notice of Non-Discrimination. Eligibility is not determined based on race, sex, ethnicity, sexual orientation, or any other prohibited factor. -
AME PhD Student Seminar
Fri, Oct 30, 2020 @ 03:00 PM - 04:00 PM
Aerospace and Mechanical Engineering
Conferences, Lectures, & Seminars
Speaker: Arturo Cajal, USC AME PhD Student
Talk Title: Modeling natural transition in RANS simulations
Abstract: One approach for improving the accuracy of Reynolds-Averaged Navier Stokes (RANS) simulations is to model the transition from laminar to turbulent flow process, particularly for low Reynolds numbers and transitional flow applications. In this work, two RANS turbulence models and three RANS transitional models, with different formulation approaches, are assessed and compared. Physics-based models offer a broader range of applicability because no empirical correlations are needed to model the transition process. Additionally, these models avoid some of the current Computational Fluid Dynamics limitations such as the use of integral quantities in unstructured grids and/or parallel computations. Thus, the physics-based Laminar Kinetic Energy model was chosen to include the effects of crossflow instabilities to make it more robust and potentially improve its predictive capability.
Biography: Arturo is a Ph.D. student working in Prof. A. Uranga Aerodynamics Design and Research Laboratory. His research focuses on modeling transition from laminar to turbulent flow for low Reynolds number flows. Arturo received his B.S. in Mechanical Engineering from the National Autonomous University of Mexico (UNAM) in 2016, and his M.S. in Mechanical Engineering from USC in 2018.
Host: AME Department
More Info: https://usc.zoom.us/j/92144809085
Audiences: Everyone Is Invited
Contact: Christine Franks
Event Link: https://usc.zoom.us/j/92144809085
This event is open to all eligible individuals. USC Viterbi operates all of its activities consistent with the University's Notice of Non-Discrimination. Eligibility is not determined based on race, sex, ethnicity, sexual orientation, or any other prohibited factor.
