SUNMONTUEWEDTHUFRISAT
Conferences, Lectures, & Seminars
Events for March
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AME Seminar
Wed, Mar 06, 2019 @ 03:30 PM - 04:30 PM
Aerospace and Mechanical Engineering
Conferences, Lectures, & Seminars
Speaker: Krishna Garikipati, University of Michigan
Talk Title: Mechano-Chemical Phase Transformations: Computational Framework, Machine Learning Studies and Graph Theoretic Analysis
Abstract: Phase transformations in a wide range of materials-”for energy, electronics, structural and other applications-”are driven by mechanics in interaction with chemistry. We have developed a general theoretical and computational framework for large scale simulations of these mechano-chemical phenomena. I will begin by presenting our recent work in this sphere, while highlighting some of its more insightful results. In addition to being a platform for investigating mechanically driven phenomena in materials physics, this work is a foundation to explore the potential of recent advances in data-driven modeling. Of interest to us are machine learning advances that may enhance our approaches to solve computational materials physics problems. I will outline the first of several recent studies that we have launched in this spirit. Such combinations of classical high-performance scientific computing and modern data-driven modeling now allow us to access large numbers of states of physical systems. They also motivate the study of mathematical structures for representation, exploration and analysis of systems by using these collections of states. With this perspective, I will offer a view of graph theory that places it in nearly perfect correspondence with properties of stationary and dynamical systems. This has opened up new insights to our earlier, large-scale computational investigations of mechano-chemically phase transforming materials systems. This treatment has potential for eventual decision-making for physical systems that builds on high-fidelity computations.
Krishna Garikipati is a computational scientist whose work draws upon nonlinear physics, applied mathematics and numerical methods. A very recent interest of his is the development of methods for data-driven computational science. He has worked for quite a few years in mathematical biology, biophysics and materials physics. Some specific problems he has been thinking about recently are: (1) mathematical models of patterning and morphogenesis in developmental biology, (2) mathematical and physical modeling of tumor growth, and (3) mechano-chemically driven phenomena in materials, such as phase transformations and stress-influenced mass transport.
Host: AME Department
More Info: https://ame.usc.edu/seminars/
Location: Seaver Science Library (SSL) - 150
Audiences: Everyone Is Invited
Contact: Tessa Yao
Event Link: https://ame.usc.edu/seminars/
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, Mar 20, 2019 @ 11:00 AM - 12:00 PM
Aerospace and Mechanical Engineering
Conferences, Lectures, & Seminars
Speaker: Ananya Renuka Balakrishna, University of Minnesota
Talk Title: Microstructural Engineering Of Energy-Related Materials
Abstract: Future advances in aerospace engineering depend on developing materials with enhanced properties. For example, the next generation of electric aircrafts will need light-weight low-fatigue materials, high-performance sensing and actuation materials, and high-density energy storage materials. Material properties can be drastically enhanced by tuning the materials microstructural features. In my research, I develop and apply phase-field methods to investigate how microstructures form and evolve in materials, and how we can engineer these microstructures to enhance material properties. In this talk, I will present applications of phase-field modeling to two material systems: electro-mechanical -ferroelectrics- and chemo-mechanical -batteries- systems. First, I will show how microstructural engineering of ferroelectric materials generate actuation strains several times greater than piezoceramics in market. Second, I will show that not only the electrodes microstructures but also their crystallographic texture can be tailored to enhance battery materials mechanical strength. Overall, the phase-field models developed in my research provide a theoretical and computation framework to engineer next generation aerospace materials with enhanced properties and extended lifespans.
Ananya Balakrishna is a postdoctoral researcher at the University of Minnesota investigating microstructures in magnetic and light-interactive materials. She completed her PhD in Solid Mechanics and Materials Engineering at the University of Oxford, before pursuing postdoctoral research at MIT as a Lindemann Postdoctoral fellow. Broadly, her research focuses on developing mathematical models to investigate the links between material microstructures and properties in energy storage and functional materials. Her research on engineering ferroelectric microstructures has been recognized by the Falling Walls London Lab prize, and the British Federation for Women Graduates Award. She has also won other awards including the ASME Best student paper award, and the Felix scholarship for her graduate study.
Host: AME Department
Location: Seaver Science Library (SSL) - 150
Audiences: Everyone Is Invited
Contact: Tessa Yao
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, Mar 27, 2019 @ 03:30 PM - 04:30 PM
Aerospace and Mechanical Engineering
Conferences, Lectures, & Seminars
Speaker: Hangbo Zhao, Northwestern University
Talk Title: Advanced Manufacturing of Unconventional 3D Micro- and Meso-Structures: From Strain-Engineered Growth to Mechanically Guided Assembly
Abstract: The growing availability of methods for three-dimensional (3D) manufacturing methods has implications across diverse areas ranging from energy systems to microelectronics, yet few techniques offer the necessary capabilities in geometric complexity, materials compatibility and design versatility. In this talk, I will discuss two novel manufacturing approaches to creating 3D functional material systems that are not feasible by conventional manufacturing methods: 1) strain-engineered growth of complex 3D carbon nanotube microarchitectures, and 2) mechanically guided 3D assembly of a broad range of functional materials and electronics. I will show how strain-engineered growth of carbon nanotubes, in combination with conformal coatings, enables direct formation of hierarchically structured surfaces with tailorable mechanical and interfacial properties for controlling liquid wetting and adhesion. Next, I will describe novel manufacturing technologies that exploit structural buckling and local twisting to create morphable 3D mesoscale structures in diverse advanced materials, and show how these can be used to make tunable optical metamaterials. I will also outline a microphysiological platform fabricated by mechanically guide assembly for tissue engineering and biomedical research. I will conclude by discussing new opportunities in designing and manufacturing multifunctional, adaptive material systems.
Hangbo Zhao is currently a postdoctoral researcher in the Center for Bio-Integrated Electronics in Prof. John Rogers group at Northwestern University, where he works on multifunctional 3D materials systems and bio-integrated electronics for applications in tissue engineering and healthcare. He received his Ph.D. degree in the Department of Mechanical Engineering at MIT in 2017, supervised by Prof. A. John Hart. His Ph.D. thesis focused on developing engineered, hierarchical surfaces for controlling liquid wetting and adhesion. He received his masters degree also in mechanical engineering at MIT in 2014, supervised by Prof. Carl V. Thompson. He received his bachelors degree in precision instruments at Tsinghua University in China in 2011.
Wednesday, March 27, 2019
3:30 PM
Seaver Science Library, Room 150 (SSL 150)
Refreshments will be served at 3:15 pm.
Host: AME Department
More Info: https://ame.usc.edu/seminars/
Location: Seaver Science Library (SSL) - 150
Audiences: Everyone Is Invited
Contact: Tessa Yao
Event Link: https://ame.usc.edu/seminars/
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.
