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SUNMONTUEWEDTHUFRISAT
Events for September 28, 2011
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Oral Dissertation Defense
Wed, Sep 28, 2011 @ 10:00 AM - 12:00 PM
Sonny Astani Department of Civil and Environmental Engineering
Conferences, Lectures, & Seminars
Speaker: Arash Noshadravan, CEE Ph.D. Candidate
Talk Title: Stochastic Characterization, Realization and Upscaling of Polycrystalline Materials
Abstract: Almost all metallic structures, in particular aerospace systems, consist of polycrystalline materials. There is an inherent heterogeneity in the structure of polycrystals that results from variation in the morphology and texture of underlying microstructures, characterized by geometrical shape, size and crystallographic orientations. The prediction of scatter in mechanical behavior of metallic systems due to these microstructural heterogeneities is of significant importance to many engineering applications. The inherent heterogeneity can be adequately described by a probabilistic approach. Stochastic representation of material properties can also accommodate uncertainty stemming from incomplete data and missing information.
This dissertation is motivated by two challenges involved in developing a probabilistic framework for characterization, realization and upscaling of polycrystalline materials. The first one is concerned with the construction of a sufficiently representative description of random media in terms of morphology and material properties, for an intended purpose. The second important challenge arises in modeling the relationship between the random micro-heterogeneities and the parameters or functions used to describe the physical processes of interest at the coarse scale. One of the essential questions in this regard is whether the coarse scale description is capable of capturing the signature of fine scale characteristics. The inherent heterogeneities in the nature of these fine scale features are reflected on coarse scale observables in the form of random fluctuations around the average response. Hence, any mechanistic model must account for these fluctuations in order to capture the effect of subscale heterogeneities. To address these challenges, we first introduce a statistical characterization of an experimental database on morphology and crystallography. The resulting statistical model is used as a surrogate to further experimental data, required for calibration and validation. We then discuss the construction of a stochastic mechanistic model for mesoscale description of materials with microstructure. The linear elastic constitutive matrix of this model is described mathematically as a random matrix which is bounded from above and below. The identification of model parameters using statistical ensembles of digitally generated random microstructures is presented. We validate the predictive accuracy of the probabilistic model using simulated data resulting from subscale simulations. Also discussed in this work is a simple application problem in order to investigate the capability of the model to detect the signature of mesoscale damages. Finally, we study the effect of heterogeneities on the stochastic wave response of random polycrystalline microstructures making use of the microstructure simulation tool developed in the first part of this work.
Location: Kaprielian Hall (KAP) - 209 Conference Room
Audiences: Everyone Is Invited
Contact: Evangeline Reyes
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Munushian Seminar
Wed, Sep 28, 2011 @ 03:00 PM - 04:00 PM
Ming Hsieh Department of Electrical and Computer Engineering
Conferences, Lectures, & Seminars
Speaker: Dr. Julie Brown, Senior Vice President, Universal Display Corporation
Talk Title: âLighting the Way with Organic Light Emitting Devicesâ
Abstract: Graphic lighting emitting diodes or OLEDs are now catching the attention of the consumer. OLED smart phones can be found in every store, and are offered by all the major carriers. Fabulous early entry small area OLED TVs are now available and offer truly spectacular visual experiences with large area prototypes being exhibited at leading tradeshows. While the early focus of OLED development was for flat panel display applications, through the use of phosphorescent OLEDs, energy efficient solid state lighting is now also being realized. Lighting is now at a cross roads. Incandescent lamps are being banned world wide because of their environmental impact, while compact flourescent lamps have limited visual appeal, as well as safety concerns for residential lighting due to their mercury content. Both inorganic LEDs and OLEDs provide safe and efficient replacements for these older lighting technologies, and can complement each other in how they are used. Here we will focus on the global interest in solid state lighting and recent rapid progress in OLED lighting panel prototypes and discuss the next set of research, development and commercialization challenges to ensure future impact.
Biography: Dr. Brown is Senior Vice President and Chief Technical Officer at Universal Display Corporation (UDC). UDC is an entrepreneurial company pursuing the research, development and commercialization of organic light emitting device (OLEDs) technology into two key growth markets, namely flat panel displays and solid state lighting. UDCâs key position in the industry, along with their academic research teams at USC and U of M, is as pioneers of phosphorescent OLEDs to enable âgreenâ energy efficient OLED solutions for these markets. Under her leadership, UDC is also pursuing the creation of new product concepts based on flexible OLED displays and light sources.
Prior to joining UDC in 1998, she was a Research Manager at Hughes Research Laboratories where she was involved in the pilot line production of high speed Indium Phosphide-based integrated circuits for insertion into advanced airborne radar and satellite communication systems. Dr. Brown received her B. S. in Electrical Engineering from Cornell University (1983) and then worked at Raytheon Company (1983-1984) and AT&T Bell Laboratories (1984-1986) before returning to graduate school. Dr. Brown received an M.S. (1988) and Ph.D. (1991) in Electrical Eng./Electrophysics at the University of Southern California under the advisement of Professor Stephen R. Forrest.
Dr. Brown was nominated to IEEE Fellow in 2007 and inducted into the New Jersey High Tech Hall of Fame in 2007.She is actively involved in the Society of Information Display and over the past years been involved in a number of other professional societies. She has authored or co-authored numerous publications and patents in the fields of high speed compound semiconductor devices, microelectro-mechanical systems (MEMs) and organic light emitting devices (OLEDs).
Host: EE-Electrophysics
More Info: ee.usc.edu/news/munushianLocation: Hedco Neurosciences Building (HNB) - 100
Audiences: Everyone Is Invited
Contact: Marilyn Poplawski
Event Link: ee.usc.edu/news/munushian
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AME Department Seminar
Wed, Sep 28, 2011 @ 03:30 PM - 04:30 PM
Aerospace and Mechanical Engineering
Conferences, Lectures, & Seminars
Speaker: Denis Phares, Professor, Department of Aerospace & Mechanical Engineering, University of Southern California
Host: Dr. Geoff Spedding
More Info: http://ame-www.usc.edu/seminars/index.shtml#upcomingLocation: John Stauffer Science Lecture Hall (SLH) - 100
Audiences: Everyone Is Invited
Contact: April Mundy
Event Link: http://ame-www.usc.edu/seminars/index.shtml#upcoming
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Occidental Petroleum Info Session
Wed, Sep 28, 2011 @ 05:30 PM - 08:00 PM
Viterbi School of Engineering Career Connections
Workshops & Infosessions
Join representatives of this company as they share general company information and available opportunities.
Location: Grace Ford Salvatori Hall Of Letters, Arts & Sciences (GFS) - 106
Audiences: All Viterbi Students
Contact: RTH 218 Viterbi Career Services
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ASBME: BMEStart General Meeting 3
Wed, Sep 28, 2011 @ 06:00 PM - 07:00 PM
Viterbi School of Engineering Student Organizations
Student Activity
BMEStart will be having its 3rd meeting on Wednesday, September 28, from 6:00pm to 7:00 p.m. in THH119. This is our final brainstorming session before we decide our projects for this year. Depending on how many promising ideas we come up with or build upon, we can have possibly 3 projects to work on for this year! To help us with our brainstorming, we welcome Jared Goodner, Student Ambassador for the National Collegiate Inventors and Innovators Alliance, and Anton Barnett, perfusionist and medical device specialist. This is a great opportunity to speak with professionals who have had first-hand experience with various medical issues so please come prepared with new ideas or be ready to build on last meeting's topics. See you guys there!
Location: Mark Taper Hall Of Humanities (THH) - 119
Audiences: Everyone Is Invited
Contact: Associated Students of Biomedical Engineering
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Boeing Information Session
Wed, Sep 28, 2011 @ 06:30 PM - 08:00 PM
Viterbi School of Engineering Student Organizations
Student Activity
When: Wednesday, September 28, at 6:30pm
Where: SAL 101
What: An IEEE-sponsored information session with Boeing
Looking for an internship or a full time position? Look no further, as Boeing is holding an information session, open to all students and majors on September 28th. Full time engineers and hiring managers will be attending as well as interns from USC. They are very excited to share their experiences with you in order to give you more information about the breadth of experiences that Boeing offers.
There will be a presentation combined with a question and answer session, and of course, FREE FOOD will be provided. Feel free to invite your friends from other majors. Come and mingle and remember to bring your resume!Location: Henry Salvatori Computer Science Center (SAL) - 101
Audiences: Everyone Is Invited
Contact: Institute of Electrical and Electronics Engineers (IEEE)
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Boeing Information Session
Wed, Sep 28, 2011 @ 06:30 PM - 08:00 PM
Viterbi School of Engineering Career Connections
Workshops & Infosessions
Join Boeing representatives for an information session from former USC alumni who are currently employed with Boeing. All engineering disciplines are welcomed.
Boeing is a place where amazing people achieve amazing things. Here, you can transform aerospace, make historyâand even change the world. It's an exciting place to discover your career, as you work alongside experts and visionaries who teach and inspire. Our workforce includes every profession and career path you can imagine, taking you as far as you can dream.
Apply or connect with Boeing:
boeing.com/collegecareers/2011
Location: Henry Salvatori Computer Science Center (SAL) - 101
Audiences: All Viterbi Students
Contact: RTH 218 Viterbi Career Services
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USC NSBE Study Jamz
Wed, Sep 28, 2011 @ 07:30 PM - 09:00 PM
Viterbi School of Engineering Student Organizations
Student Activity
Come study with USC NSBE if you want a fun place to study and are in need of refreshments!
Location: Grace Ford Salvatori Hall Of Letters, Arts & Sciences (GFS) - 101
Audiences: Everyone Is Invited
Contact: NSBE National Society of Black Engineers
