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Graduate And Industry Networking



C onference P roceedings

Presented by:

Wednesday, 21 February 2007


Schedule of Events

Wednesday, 21 February 2007




8:30 am 9:00 ­ 11:30 am

Sign In Begins

Receive a name tag and a program.

UTX Lobby UTX Schmidt and Nowotny UTX Connally Ballroom

Technical Paper Presentation Competition

See students present the hottest topics in research and discover what is in store for the future.

11:30 ­ 1:15 pm

Student Research Poster Session and Luncheon

View posters of research currently being conducted in the College of Engineering.

1:30 ­ 2:00 pm

Technical Paper Competition Finals

See the finalists of the technical paper competition present their research.

UTX Schmidt

2:30 ­ 3:30 pm

Industry Panel Discussion

Ask practicing engineers about their experiences with work, research and graduate studies.

UTX Schmidt

5:30 ­ 9:00 pm

Industry and Faculty Banquet and Reception

Dine with graduate students, professors, and company representatives while listening to guest speakers discuss the growing and changing relationship between graduate students and industry. See awards presented to students, faculty, and staff for their contributions.

UTX Connally Ballroom


The Graduate Engineering Council at the University of Texas at Austin proudly welcomes you to the third annual Graduate And Industry Networking Day. The purpose of today's events is threefold: to showcase the excellent research being conducted by some of today's finest student researchers; to build industrial ties to student research; to renew enthusiasm for continuing education. We have a whole day dedicated to these goals and in the coming years, we hope to expand the events and participation. We need your help and feedback to make this event successful. Please attend as many events as possible to get a rich taste of the expanding horizons of research and to meet your peers in the engineering world.

Campus Map

San Jacinto Parking Garage


Manor Parking Garage

Burnt Orange Sponsors

Cisco Systems, Inc. is the worldwide leader in networking for the Internet. Today, networks are an essential part of business, education, government and home communications, and Cisco Internet Protocol-based (IP) networking solutions are the foundation of these networks. Cisco hardware, software, and service offerings are used to create Internet solutions that allow individuals, companies, and countries to increase productivity, improve customer satisfaction and strengthen competitive advantage. The Cisco name has become synonymous with the Internet, as well as with the productivity improvements that Internet business solutions provide.

Exxon Mobil Corporation engages in the exploration, production, transportation, and sale of crude oil and natural gas. It also engages in the manufacture, transportation, and sale of petroleum products and petrochemicals, as well as participates in electric power generation. The company manufactures and markets commodity petrochemicals, including olefins, aromatics, polyethylene and polypropylene plastics, and other specialty products. Exxon Mobil also has interests in electric power generation facilities. The company operates in the United States, Canada, Europe, Africa, Asia-Pacific, the Middle East, Russia/Caspian region, and South America. Exxon Mobil was founded in 1870. The company was formerly known as Exxon Corporation and changed its name to Exxon Mobil Corporation in 1999. Exxon Mobil is based in Irving, Texas.

KLA-Tencor Corporation is the world's leading supplier of process control and yield management solutions for the semiconductor and related microelectronics industries. The company's comprehensive portfolio of products, software, analysis, services and expertise is designed to help IC manufacturers manage yield throughout the entire wafer fabrication process-from R&D to final yield analysis.

Total is a multinational energy company committed to leveraging innovation and initiative to provide a sustainable response to humankind's energy requirements. The world's fourth-largest oil and gas company and a world-class chemicals manufacturer, Total operates in more than 130 countries and has over 111,000 employees. In addition to conducting its business according to the highest standards of professional behavior, the company maintains an ongoing commitment to transparency, dialogue and respect for others. Total is strategically dedicated to meeting the challenges faced by all of its businesses when developing natural resources, protecting the environment, integrating our operations into host country cultures, and dialoguing with civil society.

Gold Sponsors

Freescale Semiconductor, Inc. is a global leader in the design and manufacture of embedded semiconductors for the automotive, consumer, industrial, networking and wireless markets. The privately held company is based in Austin, Texas, and has design, research and development, manufacturing or sales operations in more than 30 countries. Freescale is one of the world's largest semiconductor companies with sales of $6.2 billion (USD) for the most recently reported four quarters.

IBM is a worldwide multinational corporation which strives to lead in the creation, development and manufacture of the industry's most advanced information technologies, including computer systems, software, networking systems, storage devices and microelectronics. IBM's worldwide network of solutions and services professionals translates these advanced technologies into business value for our customers.

As the fourth largest U.S.-based integrated energy company, Marathon ranks 23rd on the Fortune 500 list of top U.S. companies. Our people choose among opportunities across four continents, with plenty of advancement potential. With a focus on teamwork, technology, agility, and innovation, Marathon employees are discovering and developing valuable energy resources in proven areas and emerging sites around the world. Marathon's corporate culture keeps the layers simple and the relationships personal. Employees enjoy flexible schedules and great benefit plans. They take pride in working for a company that values environmental stewardship and community involvement. PBS&J ranks 22nd on the Engineering News-Record list of the top 500 design firms. PBS&J aims to be recognized nationally as the consultant of choice in our mission to provide professional services to our clients through technical excellence and innovation. Our core services are architecture, construction, engineering, landscape architecture, planning, program management, sciences, surveying and mapping, and technology.

Sandia is one of the nation's premier science and engineering laboratories for national security and technology innovations, with its primary facilities in Albuquerque, New Mexico and Livermore, California. Sandia's unique work requires the collective, creative minds of the nation's top scientists and engineers who want to make a difference. Of our 8,500 employees, about 1,500 hold doctorate degrees and over 2,500 hold masters degrees. Sandia is managed by the Lockheed-Martin Corporation for the U.S. Department of Energy. Sandia works in many diverse areas in support of our national security including science and engineering support for the nuclear weapons stockpile, military technologies and applications, homeland security, nonproliferation and assessments, and energy and infrastructure assurance. Sandia strives to be the laboratory that the U.S. turns to first for technology solutions to the most challenging problems that threaten peace and freedom.

Silver Sponsors

21CT develops security, intelligence and search technologies for government and enterprise customers. The company provides both professional services and product development to solve problems that range from detecting network intrusions, to analyzing large data sets for intelligence analysts. 21CT is a provider of technology solutions for the intelligence, security and government communities. 21CT's applications achieve order-of-magnitude improvement in performance over existing search and analytics solutions, and apply these solutions to critical problems faced by modern intelligence and security analysts. 21CT promotes employee fulfillment by creating a flexible environment that encourages innovative research and cutting-edge technology development.

BakerRisk provides comprehensive services to assist clients in managing hazards, protecting personnel and property, and ensuring compliance with regulatory mandates. BakerRisk was formed by the merger of an internationally recognized engineering design firm with the number one independent insurance risk engineering company in the world. BakerRisk has expertise in blast effects, response of structures to dynamic loading, mitigation, prevention and investigation of catastrophic industrial explosion accidents, consequence analysis/modeling, qualitative and quantitative risk assessments, process design reviews, root cause incident investigations, PSM/RMP compliance assessments, loss estimate and business interruption studies, and fire protection system analysis and design.

Chevron Corporation (NYSE: CVX), one of the world's largest integrated energy companies, is involved in every aspect of the energy industry, from oil and gas exploration and production to transportation, refining and retail marketing, as well as chemicals manufacturing, and sales and power production. Active in more than 180 countries, Chevron employs more than 51,000 people worldwide (excluding service station personnel). Chevron marked its 125th anniversary in 2004.

Schwab Structural Engineering, Inc. is a client centered firm located in New Braunfels (near San Antonio, Austin and San Marcos), Texas. We strive to be the structural engineer of choice by providing innovative and high quality design services. Approximately 75% of our business is specialty precast engineering, where we serve local and national clients. We perform Engineer of Record services in the Austin-San Antonio corridor and throughout the nation with the Department of Defense. We also perform assorted structural engineering services for select clients.

Sun Microsystems is an innovative industry leader in servers, storage, software, and services with a 100 percent focus on network computing. Nearly a quarter century ago, Sun was founded with one driving vision: The Network is the Computer. A vision for connecting everyone, no matter where they are, with whatever technology works for people--not the other way around. We engineer solutions for our customers' biggest, most important problems. We share our solutions to grow communities, increase participation, and create world-changing new market opportunities. We will build and run the world's participation infrastructure to make sure the job is done right. Whether it's servers or desktops, software or storage, Sun systems offer a consistent design that's based on over two decades of experience in network computing.

The mission of the Navy is to maintain, train and equip combat-ready Naval forces capable of winning wars, deterring aggression and maintaining freedom of the seas.

Poster Session

Topics posted today were selected from a college-wide submission of papers concerning students' research. Posters will be judged by industry representatives and professors. Awards will be presented to the best poster in each category and the best overall poster during the evening banquet. Poster categories are Energy/Environment/Transport processes/Engineering Design & Management; Materials science/Nano, Micro, Bio & MEMS engineering; and Computation & simulation/Signal processing/System Control.


Puneet Agarwal Daniel A. Carr Jung-Kuei Brian Chang Shawn S. Coffee Amber L. Doiron Adam Ekenseair Horacio Florez Jin Hur Dian Jiao Yonghwee Kim Chia-Cheng Liu G.Liu Bryan McCloskey Luis Javier Miranda Emily Moradi Jose Ruben Morones Jeremy T Murphy Mary Nodine Michael M. Oye Carrie L Peterson


Energy Materials Materials Materials Materials Materials Comp Energy Materials Energy Comp Materials Energy Energy Materials Materials Energy Energy Materials Materials


Design Loads for an Offshore Wind Turbine using Field Data Molecular Analysis of Interpolymer Complexing Hydrogels Based on Poly (Methacrylic Acid) and N-Vinyl Pyrrolidone as Carriers for Protein Delivery 3-D Characterization of Commercial AA5083 Aluminum Alloy Microstructures Selective Silicon and Germanium Nanoparticle Growth on Amorphous Surfaces Polymeric Microparticles for the Imaging of Atherosclerotic Plaques Penetrant Transport in Poly(Methyl Methacrylate) A new algorithm for representing well paths by means of NURBS surfaces Development of a price simulator for short-term electricity market Ligand Binding Affinity Estimate by AMOEBA Polarizable Force Field Probabilistic History Matching Statistical Micromechanics Simulation Platform Designed to Study the Dynamics of Self-Assembly of Cytoskeletal Substructures Smart Coating with Fluorescent Corrosion Indicator Novel Polymeric Materials with High Oil/water Fouling Resistance: Synthesis, Characterization and Application Maximizing Guafita Oil Field Remaining Value by Integrating Technologies in Reservoir Characterization and Increasing Productivity Through New Opportunities. Automated Image Analysis for High Throughput Fluorescence Microscopy Nobel Metal Nanostructures for Biological Applications Novel Product Representations for Supporting Design by Analogy Methods Mudslides during Hurricanes Ivan and Katrina and the Potential for Future Mudslides in the Gulf of Mexico GaAs Growth on Silicon Substrates Using a Thin (~80 nm) SiGe Step-Graded Buffer Layer for High-k III-V MOSFET Applications Inappropriate flexor synergies influence walking mechanics that reduce paretic propulsion in persons with post-stroke hemiparesis

Patrick Ragan Emily Reeder Marco Antonio Huerta Roldan Davood Shahrjerdi Vikramjit Singh Stewart Vaculik Ping Zhao Bin (Brenda) Zhou

Energy Energy Comp Materials Energy Energy Energy Comp

A Statistical Extrapolation Method for Estimating Extreme Loads on a Wind Turbine An Experimental and Numerical Analysis on the Mechanics of Sheet Flow on Highway Pavement Surfaces Manufacturing Multiagent System for Scheduling Optimization of Production Tasks Using Dynamic Genetic Algorithms Fabrication of Ni Nanocrystal Flash Memories Using a Polymeric SelfAssembly Approach INNOVATIONS IN DESIGN THROUGH TRANSFORMATION Design Methods for Electromechanical Actuators Evaluation of New Surfactants for Enhanced Oil Recovery Microsimulation of Single-family Residential Land Use for Market Equilibria


The presenters were hand-selected by peers and professors from the large pool of graduate students who submitted a paper to this competition. Abstracts for the papers listed here can be found on the following pages. The presentations are about 15 minutes long and are open to questions at the end. Schmidt Room Schedule Time Presenter Category 9:10 Introduction Mohsenn 9:15 Computation Nakhaeinejad 9:30 9:45 10:00 10:15 10:25 10:40 10:55 11:10 11:30 1:30 1:45 2:00 Sanmi Koyejo Paul Griesemer Horacio Florez Break Patrick Ragan John Peterson Energy Computation Estimation of Wind Turbine Fatigue Loads using Time-Domain and Spectral Methods Adaptive Grid Strategies for FEM Simulations of Double-Diffusive Convection in Porous Media Fully Embedded Board Level Optical Interconnects Computation Computation Computation

Topic Model-free and Model-based Diagnosis of Bearings Capacity Gains of Multi-User Diversity in a Cellular Downlink Interference-limited Environment Targeting Low Energy Transfers in a Four Body System A New Algorithm to Represent Well Paths by Means of NURBS Surfaces

Xiaolong Wang Materials/MEMS Judges' Conference Luncheon/Poster Session Finalist from Schmidt morning session Finalist from Nowotny morning session Judges' Conference

Nowotny Room Schedule 9:15 Introduction 9:30 Vikramjit Singh Energy 9:45 10:00 10:15 10:25 10:40 10:55 11:10 11:25 Rong Luo Daniel Carr Bo Lu Break Hao Ju

Innovations in Design Through Transformation Effect of Measured 3-D Tire-Pavement Contact Stress Energy on Critical Pavement Response Molecular Analysis of Interpolymer Complexing Materials/MEMS Hydrogels Based on Poly (Methacrylic Acid) and NVinyl Pyrrolidone as Carriers for Protein Delivery Energy Iterative Coupling Techniques in Reservoir Simulation

Novel Polymeric Coating Materials with High Oil/Water Fouling Resistance Using Self-assembly and Selective Chemical Vapor Shawn Coffee Materials/MEMS Deposition for Precise Positioning of Individual Germanium Nanoparticles on Hafnia Influence of Coastal Wind and Wave Environments on Puneet Agarwal Energy Long-term Design Loads of an Offshore Wind Turbine Judges' Conference Energy

Abstracts from Selected Papers

Papers written for this competition underwent rigorous review both by peers and by faculty. Relevance to the world in general and adherence to the high standard of engineering were evaluated. Originality and overall quality were also evaluated. Special thanks to the faculty review committee for reviewing all of the papers. The paper categories are Energy/Environment/Transport processes/Engineering Design & Management; Materials science/Nano, Micro, Bio & MEMS engineering; and Computation & simulation/Signal processing/System Control. A judging panel composed of industry representatives and faculty members will choose the top paper in each of the three categories. During the banquet, these winners will receive cash awards. The Grand Award will be presented to the overall top paper.

Faculty Review Committee

John Barnes, ME Ronald Barr, ME Oguzhan Bayrak, CAE Michael Bryant, ME Shaochen Chen, ME Derek Chiou, ECE Ghislaine Kozuh, CAE Thomas Edgar, ChE Janet Ellzey, ME Stanislav Emelianov, BME Michael Engelhardt, CAE Wolfgang Frey, BME Vijay Garg, ECE David Goldstein, ASE Matthew Hall, ME Todd Helwig, CAE John Howell, ME Paul Jensen, ME Sarfraz Khurshid, ECE Mary Kirisits, CAE Brian Korgel, ChE Desmond Lawler, CAE Howard Liljestrand, CAE Raul Longoria, ME Lance Manuel, CAE Mia Markey, BME Ronald Matthews, ME Yale Pratt, ECE Venkat Raman, ASE Krishnendu Roy, BME Phillip Schmidt, ME Sanjay Srinivasan, PE Earl Swartzlander, ECE Carlos Torres-Verdin, PE Alfred Traver, ME Phillip Varghese, ASE Sriram Vishwanath, ECE Gary Vliet, ME Randi Voss, BME Harovel Wheat, ME Haitao Zhang, ASE Xiaojing Zhang, BME Yong Zhu, ASE


THE INFLUENCE OF COASTAL WIND AND WAVE ENVIRONMENTS ON LONG-TERM DESIGN LOADS OF AN OFFSHORE WIND TURBINE Puneet Agarwal and Lance Manuel Abstract: Our objective here is to establish long-term design loads, associated with a prescribed return period (on the order of 20 years), for offshore wind turbines using statistical extrapolation methods. In such methods, one first needs to establish distributions for random variables describing the environment (wind and waves here), and for the turbine load of interest (the mudline bending moment at the tower base here) conditional on different environmental conditions. To derive these distributions, we use field data from an instrumented 2 MW wind turbine at the Blyth offshore wind farm in the United Kingdom. We carefully separate out the data in different wind-direction sectors that reflect contrasting wind (and accompanying wave) characteristics in the ocean environment at this site, and we discuss differences in long-term load predictions associated with different wind directions. The field data, available as summary statistics, are limited in the sense that not all possible combinations of environmental conditions are represented and, hence, derived long-term loads have inherent uncertainty associated with them; we investigate this uncertainty using bootstrap techniques.

MOLECULAR ANALYSIS OF INTERPOLYMER COMPLEXING HYDROGELS BASED ON POLY(METHACRYLIC ACID) AND N-VINYL PYRROLIDONE AS CARRIERS FOR PROTEIN DELIVERY Daniel A. Carr and Nicholas A. Peppas Abstract: Hydrogels comprised of poly(methacrylic acid-co-N-vinyl pyrrolidone) P(MAA-co-NVP) were prepared and characterized to determine the system's viability as a carrier for the oral delivery of growth hormone. Hydrogel disks were dynamically swollen to simulate swelling in vivo; it was determined that increasing the crosslinking ratio decreased the weight swelling ratio of the system but that increasing the molar concentration of N-vinyl pyrrolidone increased the weight swelling ratio. In comparison to poly(methacrylic acidg-poly(ethylene glycol)) P(MAA-g-PEG), less growth hormone could be loaded into P(MAA-co-NVP). However, growth hormone released from P(MAA-co-NVP) microparticles faster than it did from P(MAA-g-PEG) microparticles. It was also determined that P(MAA-co-NVP) microparticles were not cytotoxic to Caco-2 cells. These early findings are promising for the viability of P(MAA-co-NVP) as a carrier for oral delivery, but future in vitro and in vivo release studies are needed to fully ascertain the system's capabilities. USING SELF-ASSEMBLY AND SELECTIVE CHEMICAL VAPOR DEPOSITION FOR PRECISE POSITIONING OF INDIVIDUAL GERMANIUM NANOPARTICLES ON HAFNIA Shawn S. Coffee and John G. Ekerdt Abstract: Germanium nanoparticle nucleation was studied in organized arrays on HfO2 using a SiO2 thin film mask with ~20-24 nm pores and a 6×1010 cm-2 pore density. Poly(styrene-b-methyl methacrylate) diblock copolymer was employed to pattern the SiO2 film. By seeding 0.4 ML adatoms on HfO2 at room temperature before 5.2 ML hot wire chemical vapor deposition growth and varying growth temperatures between 725-800 K, nanoparticle size was demonstrated to be limited by Ge etching of SiO2 pore walls. A NEW ALGORITHM TO REPRESENT WELL PATHS BY MEANS OF NURBS SURFACES H. A. Florez and M. F. Wheeler Abstract: Representing the path of deviated petroleum wells is a challenging geometrical problem. A novel algorithm for modeling such geometries is presented in this paper. The algorithm is based on NURBS curves and surfaces already known from the automotive industry. NURBS curves are used to interpolate well survey discrete points then a translational surface is obtained after moving a circle around this curve. This simple procedure allows us to represent two well logs at once: one in the radius and the other in the color contour. Missing regions are represented by constant radius values. The results show that the proposed algorithm can deal with real deviated wells. TARGETING LOW ENERGY TRANSFERS IN A FOUR BODY SYSTEM Paul Griesemer and Cesar Ocampo Abstract: With the announced intentions of creating a permanent presence on the Moon comes a need for efficient transfer of mass to the Lunar system. A new class of transfers, called low energy transfers, has been discovered that has the potential to reduce the fuel cost required in this transfer by eliminating the need for an insertion burn into a lunar orbit. However, the complex, chaotic dynamics involved in these transfers have made their targeting a non-trivial problem. An efficient, robust method of targeting low energy transfers is described. A particular periodic orbit in the circular restricted three body problem is shown to have many of the characteristics needed for a low energy transfer in the four body problem. An injection from a circular parking orbit into the periodic orbit serves as an initial guess for a targeting algorithm. By targeting parameters incrementally in increasingly complicated systems, the stability of the algorithm is maintained. Low energy transfer in real-world Sun-Earth-Moon systems are produced in a systematic way.

NOVEL POLYMERIC MATERIALS WITH HIGH OIL/WATER FOULING RESISTANCE: SYNTHESIS, CHARACTERIZATION AND APPLICATION Hao Ju, Bryan McCloskey and Benny Freeman Abstract: Novel polymeric materials were synthesized via free-radical polymerization of poly(ethylene glycol) diacrylate (PEGDA) aqueous solutions in this study. These materials exhibited high water permeability and good fouling resistance. For example, the material prepared from a 80 wt.% water, 20 wt.% PEGDA solution showed an excellent water permeability of approximately 150 L m/(m2 hr atm). Water content in the prepolymerization solution was found to significantly affect water permeability of synthesized materials; water permeability increases dramatically with increasing water content in the prepolymerization solution. The solute rejection of the synthesized materials was evaluated by molecular weight cut-off measurements, and the results revealed that these materials can reject more solutes than commercial ultrafiltration membranes. Finally, these polymeric materials were applied as coating layers to commercially available polysulfone (PSf) membranes to produce a high- flux, low-fouling composite membrane. Oil/water crossflow filtration experiments showed that these composite membranes had water flux values 4x higher than that of uncoated PSf, and the coated membranes had a higher rejection than the uncoated membranes. CAPACITY GAINS OF MULTI-USER DIVERSITY IN A CELLULAR DOWNLINK INTERFERENCE-LIMITED ENVIRONMENT O. O. Koyejo and J. G. Andrews Abstract: Multi-user diversity is an important strategy for improving throughput in future wireless communication systems. This is because it exploits the inherent randomness in the wireless channel. Previous results have shown that in a single cell using optimal multi-user diversity, ergodic capacity scales as O(log log K) where K is number of users. However, most work does not account for large scale wireless effects such as shadowing, path loss and interference. In this paper, we show the empirical order gains of multi user selection diversity scale as O(log K) using greedy selection and as O(l) using round robin scheduling (the current dominant scheduling scheme) in cellular wireless channels. We also argue that the large scale effects such as path loss, shadowing and interference are more important in diversity gains than fading. The aims of this paper are to suggest intuition for how multi-user diversity will perform in a realistic network, create the foundation for an analytical solution of the order gains, and give some basis for optimism for the use of multi-user diversity in future wireless communication systems. ITERATIVE COUPLING TECHNIQUES IN RESERVOIR SIMULATION Bo Lu and Mary F. Wheeler Abstract: The main objective of iterative coupling techniques in reservoir simulation is to obtain both efficiency and accuracy at the same time. Iterative method is fast because pressure and saturation are solved sequentially instead of simultaneously; it is accurate because pressure and saturation are iteratively coupled within one each timestep. Iterative coupled oil/water and air/water models have been developed and several numerical examples have been run to verify their capabilities. Results show that iterative method is more stable and accurate than IMPES method and saves about 30% running time than FIM. Several advanced computational techniques are applied in iterative method. In additional, the stability of the iterative coupled model has been discussed. Further research will be dedicated to iterative three-phase model.

EFFECT OF MEASURED 3-D TIRE-PAVEMENT CONTACT STRESS ON CRITICAL PAVEMENT RESPONSE Rong Luo and Jorge A. Prozzi Abstract: Pavement design methods assume that the tire-pavement contact stress is equal to the tire inflation pressure and is uniformly distributed in the vertical direction over the contact area. However, because of these assumptions, this uniform stress model does not correctly estimate pavement surface strains, which are used to determine the classical "bottom-up" fatigue cracking. To precisely account for the actual contact stress, this paper evaluates the longitudinal strains and transverse strains at the bottom of the asphalt layer by applying measured 3D non-uniform stresses. Critical strains due to 3D stresses are compared to those caused by the uniform stress. Results show that the uniform stress model underestimates the critical longitudinal and transverse strain of pavement with a thin asphalt layer (<40 mm) but overestimates the critical horizontal strains of pavement with an asphalt layer which is from 40 to 160 mm thick. MODEL-FREE AND MODEL-BASED DIAGNOSIS OF BEARINGS ­ COMPARATIVE STUDY Mohsen Nakhaeinejad and Michael D. Bryant Abstract: This article reviews research on fault diagnostics of rolling element bearings and compares the modelbased and the model-free diagnosis of bearings. Model-free diagnostic methods of bearings such as spectrum and wavelet analysis are studied. As the model-based diagnosis, filter design and sliding mode are presented. This comparative study shows the relative advantages of the model-based techniques over the model-free techniques for the bearing diagnosis and supports the hypothesis that model-based diagnostic methods are superior to modelfree methods for early detection and isolation of small rolling element faults in machines. ADAPTIVE GRID STRATEGIES FOR FEM SIMULATIONS OF DOUBLE-DIFFUSIVE CONVECTION IN POROUS MEDIA J. W. Peterson, B. T. Murray and G. F. Carey Abstract: Double-diffusive convection processes in porous media often yield complex spatial flow structures. Here we consider double-diffusive convection in a porous medium heated from below and saturated with a fluid having a stabilizing concentration gradient. We develop a fully-coupled stabilized finite element scheme and employ our adaptive mesh refinement (AMR) methodology and algorithms to resolve solution features. Novel aspects of the refinement strategy, algorithms, and implementation are described. ESTIMATION OF WIND TURBINE FATIGUE LOADS USING TIME-DOMAIN AND SPECTRAL METHODS Patrick Ragan and Lance Manuel Abstract: Fatigue analysis for wind turbines is typically carried out in the time domain, using cycle-counting techniques such as ASTM's Rainflow Cycle-Counting Algorithm. As an alternative, we investigate here the feasibility of estimating wind turbine fatigue loads using spectral techniques. In particular, we employ a method developed by Dirlik to estimate stress range probability distributions that is based on spectral moments of the load in question. We compare fatigue load estimates based on this spectral method with those based on conventional rainflow cycle counting, and discuss the advantages and limitations of using this alternative method for different wind turbine rotor and tower loads. The different load measures analyzed exhibit contrasting patterns with regard to aspects such as dominant periodic components which affect accuracy of the spectral method. Also studied is the degree of conservatism (or lack thereof) in fatigue design based on the spectral method. INNOVATIONS IN DESIGN THROUGH TRANSFORMATION: A FUNDAMENTAL STUDY OF TRANSFORMATION PRINCIPLES Vikramjit Singh, Jarden Krager and Kristin Wood Abstract: The act of creating a new product, system or process is an innovation: the result of excogitation, study and experimentation. Using a combined inductive and deductive approach, this paper identifies analogies in nature, patents and products along with hypothesizing the existence of products possessing a broader functional repertoire than traditional designs in different environments and situations. This breed of innovative products possesses a broader functional repertoire by transforming into different configurations. Current design theory lacks a systematic methodology for the creation of products that have the ability to transform. Transformation Design Principles are extracted by studying key design features and functional elements that make up a transforming product. These principles are listed, categorized, defined and validated according to their roles in generic transformations.

FULLY EMBEDDED BOARD LEVEL OPTICAL INTERCONNECTS--FROM WAVEGUIDE FABRICATION TO DEVICE INTEGRATION X. Wang and R. T. Chen Abstract: This paper presents the latest progress toward fully embedded board level optical interconnects in the aspect of waveguide fabrication and device integration. A one-step pattern transfer method is used to form a large cross section multimode waveguide array with 45º micro-mirrors by silicon hard molding method. Optimized by a novel spin-coating surface smoothing method for the master mold, the waveguide propagation loss is reduced to 0.09dB/cm. The coupling efficiency of the metal-coated reflecting mirror, which is embedded in the thin film waveguide, is experimentally measured to be 85%. The active optoelectronic devices, vertical surface emitter lasers (VCSELs) and p-i-n photodiodes, are integrated with the mirror-ended waveguide array, and successfully demonstrate a 2.5Gbps signal transmission over the embeddable optical layer for the first time.

Industry Question and Answer Panel

The purpose of this panel is to solicit experiences, opinions, and advice from practicing engineers who have earned advanced degrees. This is the students' chance to discover how best to leverage higher degrees, critical thinking, and research skill. This is an opportunity for companies to assist students in becoming competitive applicants and successful engineers in the workforce.

Company Chevron ExxonMobil Freescale Semiconductor KLA-Tencor Marathon Oil Schwab Structural Engineering

Representative Debojit Bhuyan Ken Brantferger Walter Kuenast John Jordan Jill Evans, Gail Chenoweth Amy Stone


During the banquet, faculty and industry speakers will address the relationship between graduate students and industry.

5:30 pm 6:50 pm

Check in and reception GAIN Welcome Amiee Quon, GAIN Co-Director Dean's Welcome Dr. Ben Streetman, College of Engineering Dean Introduction of Attending Companies and Faculty Michael Powell, ECAC Assistant Director Dinner Served Keynote Speech Presentation of Awards Graduate Engineering Council Statement Jessica Kruidhof, GEC President Special Thanks Dmitry Krapchetov, GAIN Co-Director

Menu Chicken Medallions in a Pecan Crust topped with Raspberry Chipotle Cabernet Sauce served with Wild Rice Grilled Portabella Mushrooms with Lentils, Vegetarian Spicy Marinara over Pasta and Vegetables Cajeta Cheesecake or Fresh Fruit Tartlets with Apricot Glaze

Special Thanks: Dean Streetman, Dr. Randall Charbeneau, Dr. David Dolling, Michael Powell

For Industry Representatives

There is a break room provided for your convenience. Sit back, relax, reflect, and write your notes on the fantastic students you've met during this event. The break room is open throughout the day except during judges' conferences. Location: UTX Jackson Room.


The Graduate Engineering Council has been serving the student body for 37 years. The primary purpose of the GEC is to represent the interests of the graduate engineers at The University of Texas at Austin. The GEC serves as a liaison between the Office of the Dean of Engineering, the Office of the Dean of Graduate Studies and graduate engineers in the College of Engineering. The GEC also engages in appropriate activities promoting the general welfare of graduate engineers. The GEC sponsors many events pertinent to graduate life. The Council also participates in events promoting graduate studies in the engineering fields including the Graduate School Information Panel for Undergraduates.

Dmitry Krapchetov, GAIN Co-Director Amiee Quon, GAIN Co-Director Jessica Kruidhof, GEC President Neha Takawale, GEC Financial Director Sanmi Koyejo, Corporate Relations Khalid Miah, Corporate Relations Nathan Vrubel, Corporate Relations Vishwanath Dalvi, Paper Presentation Competition Doh Lee, Paper Presentation Competition Rick Naething, Poster Session Priya Ponnapalli, Poster Session Daniel Carr, GAIN Committee Norman Horn, GAIN Committee Landry Khounlavong, GAIN Committee Jyoti Seth, GAIN Committee

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Notice: fwrite(): send of 206 bytes failed with errno=32 Broken pipe in /home/ on line 531