Engineering Commons^™

Soap Bubble Clusters In Thin Enclosures, Said Shakerin

All Faculty Books and Book Chapters - School of Engineering and Computer Science

No abstract provided.

Introduction To Making Futures, Pelle Ehn

Articles

No abstract provided.

Double Or Nothing: Reflections On Bridge Design, Hillary Brown

Articles

No abstract provided.

Positive Sum Design And The Economics Of Sharing, Ian Gonsher

Articles

No abstract provided.

Beyond Design Thinking, Ian Gonsher

Articles

No abstract provided.

Resonant Inductive Coupling As A Potential Means For Wireless Power Transfer To Printed Spiral Coil, Mohammad Haerinia, Ebrahim S. Afjei

Electrical Engineering Student Publications

This paper proposes an inductive coupled wireless power transfer system that analyses the relationship between induced voltage and distance of resonating inductance in a printed circuit spiral coils. The resonant frequency produced by the circuit model of the proposed receiving and transmitting coils are analysed by simulation and laboratory experiment. The outcome of the two results are compared to verify the validity of the proposed inductive coupling system. Experimental measurements are consistent with simulations over a range of frequencies spanning the resonance.

Journal Of The Arkansas Academy Of Science - Volume 70 2016, Academy Editors

Journal of the Arkansas Academy of Science

No abstract provided.

Sustainability For Shrinking Cities, Justin L. Herrmann, William D. Shuster, Audrey L. Mayer, Ahjond S. Garmestani

College of Forest Resources and Environmental Science Publications

Shrinking cities are widespread throughout the world despite the rapidly increasing global urban population. These cities are attempting to transition to sustainable trajectories to improve the health and well-being of urban residents, to build their capacity to adapt to changing conditions and to cope with major events. The dynamics of shrinking cities are different than the dynamics of growing cities, and therefore intentional research and planning around creating sustainable cities is needed for shrinking cities. We propose research that can be applied to shrinking cities by identifying parallel challenges in growing cities and translating urban research and planning that is …

A Work System Front End For Object-Oriented Analysis And Design, Steven Alter, Narasimha Bolloju

Business Analytics and Information Systems

This paper proposes that basic ideas from the work system theory (WST) and the work system method (WSM) might serve as a front end to object-oriented analysis and design (OOAD), thereby providing a path from business-oriented descriptions to formal, technical specifications. After describing the background motivation and summarizing work system concepts, the paper uses a hiring system example to show how two tools from WSM can be used as a front end for OOAD, in effect, a step before creating use case diagrams and other types of Unified Modeling Language (UML) artifacts. Potential benefits of this approach stem from a …

Nebraska Summary: S1063 Massey Ferguson 7718, Nebraska Tractor Test Lab

Nebraska Tractor Tests

ABOUT THE TEST REPORT AND USE OF THE DATA The test data contained in this report are a tabulation of the results of a series of tests. Due to the restricted format of these pages, only a limited amount of data and not all of the tractor specifications are included. The full OECD report contains usually about 30 pages of data and specifications. The test data were obtained for each tractor under similar conditions and therefore, provide a means of comparison of performance based on a limited set of reported data. EXPLANATION OF THE TEST PROCEDURES Purpose The purpose of …

Nebraska Summary: S1102 New Holland T6.180, Nebraska Tractor Test Lab

Nebraska Tractor Tests

ABOUT THE TEST REPORT AND USE OF THE DATA The test data contained in this report are a tabulation of the results of a series of tests. Due to the restricted format of these pages, only a limited amount of data and not all of the tractor specifications are included. The full OECD report contains usually about 30 pages of data and specifications. The test data were obtained for each tractor under similar conditions and therefore, provide a means of comparison of performance based on a limited set of reported data. EXPLANATION OF THE TEST PROCEDURES Purpose The purpose of …

Nebraska Summary: S1095 Case-Ih Maxxum 135, Nebraska Tractor Test Lab

Nebraska Tractor Tests

ABOUT THE TEST REPORT AND USE OF THE DATA The test data contained in this report are a tabulation of the results of a series of tests. Due to the restricted format of these pages, only a limited amount of data and not all of the tractor specifications are included. The full OECD report contains usually about 30 pages of data and specifications. The test data were obtained for each tractor under similar conditions and therefore, provide a means of comparison of performance based on a limited set of reported data. EXPLANATION OF THE TEST PROCEDURES Purpose The purpose of …

Nebraska Summary: S1083 Case-Ih Puma 200, Nebraska Tractor Test Lab

Nebraska Tractor Tests

ABOUT THE TEST REPORT AND USE OF THE DATA The test data contained in this report are a tabulation of the results of a series of tests. Due to the restricted format of these pages, only a limited amount of data and not all of the tractor specifications are included. The full OECD report contains usually about 30 pages of data and specifications. The test data were obtained for each tractor under similar conditions and therefore, provide a means of comparison of performance based on a limited set of reported data. EXPLANATION OF THE TEST PROCEDURES Purpose The purpose of …

A Framework To Utilize Shear Strength Properties For Evaluating Rutting Potentials Of Unbound Aggregate Materials, Issam Qamhia, Erol Tutumluer, Liang Chern Chow, Debakanta Mishra

Civil Engineering Faculty Publications and Presentations

This paper presents shear strength and permanent deformation trends of four unbound aggregate materials, commonly used for base and subbase layers in the state of North Carolina, USA, studied through repeated load triaxial testing, using the University of Illinois FastCell equipment. A testing and modeling framework has been established to develop a proper permanent deformation prediction model, referred to herein as the UIUC rutting model, with number of load applications. According to the framework, the unbound aggregate shear strength properties are incorporated into the model using the ratio of the applied wheel load shear stress to the mobilized shear strength, …

The Response Of An Ellipsoidal Colloid Particle In An Ac Field, Cornelius Adebowale Obasanjo

ETD Archive

The quest for new smart materials with engineered properties and desired functionalities has driven scientists into the domain of nanotechnology over the past 30 years. Particles with anisotropic properties as a result of their geometry, chemical patterning or surface functionality have been envisioned as building blocks for advanced materials. By tuning the anisotropic interactions engendered by anisotropic particles, one potentially could manipulate the dynamic pathways for assembly.

The work described in this thesis considers the response of an ellipsoidal colloid particle to a nearby AC electrode polarized at ~0.1 – 4 kV/m and ~0.1 – 3 kHz. The ellipsoidal particle, …

A Comparative Life Cycle Assessment For Utilising Laminated Veneer Bamboo As A Primary Structural Material In High-Rise Residential Buildings, Philip Kavanagh

Masters

In a time when construction is ranked as one of the world’s least sustainable industries consuming about half of the world’s non-renewable resources (Hinson, 2012), it is important to develop and advance the methods and means by which we select and use building materials and how we design, engineer and construct our architecture. This research aimed to evaluate a method for utilising laminated veneer bamboo (LVB) as a primary structural material in high-rise residential buildings and evaluate the environmental potential of LVB through a comparative life cycle analysis (LCA). The process of life cycle analysis was completed through the development …

Hybrid Sequencing Of Uncompressed And Compressed 3d Stereoscopic Video: A Preliminary Quality Evaluation, Siu Ming, Vincent Choy, Eva Cheng, Ian Burnett

Staff Publications

The use of 3D stereoscopic technology with high quality videos can provide visual entertainment to viewers. However, the bandwidth of typical communication channels cannot transmit uncompressed 3D videos, resulting in the need for video quality compression. This paper presents a series of preliminary studies to investigate the subjective perception of uncompressed and compressed video sequences, and proposes the ‘hybrid’ sequencing of uncompressed and compressed content in a single stereoscopic 3D video as an alternative approach for limited bandwidth transmission. However, the hybrid uncompressed/compressed sequencing of stereoscopic 3D video may affect the correlation between the left and right views of the …

Specification Recommendation For Use Of High Performance Repair Material, Jennifer Woods

ETD Archive

The State of Ohio and the Ohio Department of Transportation (ODOT) have sought out ways to extend the life of the repair materials used by their construction crews, specifically, using high performance repair materials for the purposes of patching worn down or cracked sections of highways and bridge decks. Ohio is known for its frequent changes in weather, with freeze-thaw cycles occurring multiple times throughout the year. These cycles affect the lifespan of the repair material and create more maintenance for the DOT. Products that combat this problem were chosen, installed and examined over a year period to determine which …

Prospects For Meeting The Corporate Average Fuel Economy Standards In The U.S., Jessica Zielinski, Rebecca Andreucci, Can B. Aktas

Civil Engineering Faculty Publications

In 2013, the transportation sector accounted for 34% of the United States’ greenhouse gas emissions, with no significant change from prior years. Efforts to improve vehicle transportation efficiency and curb associated environmental emissions had led to the Corporate Average Fuel Economy (CAFE) standards for passenger cars and light trucks initially introduced in 1975. The National Highway Traffic Safety Administration has phased in new standards recently that require an average combined fleetwide fuel economy of 35.1 - 35.4 mpg by 2017, 40.3 - 41.0 mpg by 2021, and 48.7 - 49.7 mpg by 2025. The new legislation has the potential to …

Group Scheduling In A Cellular Manufacturing Shop To Minimise Total Tardiness And Nt: A Comparative Genetic Algorithm And Mathematical Modelling Approach, Gokhan Egilmez, Emre M. Mese, Bulent Erenay, Gürsel A. Süer

Mechanical and Industrial Engineering Faculty Publications

In this paper, family and job scheduling in a cellular manufacturing shop is addressed where jobs have individual due dates. The objectives are to minimise total tardiness and the number of tardy jobs. Family splitting among cells is allowed but job splitting is not. Two optimisation methods are employed in order to solve this problem, namely mathematical modelling (MM) and genetic algorithm (GA). The results showed that GA found the optimal solution for most of the problems with high frequency. Furthermore, the proposed GA is efficient compared to the MM especially for larger problems in terms of execution times. Other …

A Research Experiences For Undergraduates (Reu) Site Program On Engineering Education Research, Ning Fang, Oenardi Lawanto, Wade H. Goodridge, Idalis Villanueva, Kurt Becker

Engineering Education Faculty Publications

This paper describes a U.S. National Science Foundation-funded Research Experiences for Undergraduates (REU) Site program that aims to provide undergraduate students with experiences in engineering education research (i.e., education research in the context of engineering). This paper provides an overview of the program and briefly describes the common intellectual focus of this REU Site program. Over the past two years, a total of 16 undergraduate students, seven graduate mentors, and five faculty mentors have actively participated in the program. Four important components of the program are described in this paper, including student recruitment and selection, REU seminars, weekly reflections, and …

Sexy Technical Communication, Tamara Powell, Jonathan Arnett, Monique Logan, Cassandra Race, Tiffani Reardon

2016 Faculty Bookshelf

Sexy technical writing…we’ve got to be kidding, right? But no, we aren’t. Good technical writing is powerful and clear and gets the job done. It brings people together and solves problems. Good technical writing purrs and hums like that BMW you plan to be driving someday.What’s not sexy about that? On the other hand, poor technical writing skills may lead to a lifetime of asking people if they want fries with that…or worse, selling vacuum cleaners door to door. There’s no need to ask what’s not sexy about that!

WE – your textbook authors – are a team of dedicated …

A Comparative Study Of Zn-Mn Electrodeposition From Deep Eutectic Solvents And Aqueous Electrolytes, Jelena Bajat, Mihael Bucko, David Culliton, Tony Betts

Conference Papers

The production of Zn-Mn coatings with high Mn and low oxygen content from additive free choline chloride/urea deep eutectic solvent (DES) is reported in this work. Alloy coatings containing high Mn contents (~30 at.% Mn) show the highest corrosion resistance amongst zinc alloys [1]. However, in order to obtain Mn-rich deposits on steel from a simple aqueous bath, a significant cathodic polarization or high deposition current density is necessary. Under such conditions, the Zn 2+ reduction reaction is under diffusion control, leading to the formation and growth of dendrites. In addition intensive hydrogen evolution significantly reduces the current efficiency, often …

Uav Wireless Relay, Paul Kirchoff, Lawrence Ng, David Vieth

Capstone Design Expo Posters

Often a scenario arises in which it is necessary to collection information from a hostile environment and the safest way to do this is the deployment of a small unmanned ground vehicle (UGV). In this situation the UGV will move around the environment while sending a live data stream back to the ground base. However, there can be limits on the maneuverability and range of the UGV making it difficult to complete this mission. To solve this problem unmanned aerial vehicles (UAV) are used to assist in both the deployment of the UGV as well as handling the connection between …

Application Intrusion Detection: Security For Cloud Deployments, Justin Murphy, Nick Harrison, John Taylor

Capstone Design Expo Posters

As servers move to the cloud, sources for security analysis become more limited. Security teams must make the most of the resources available to them. Our project attempts to fulfill this need by providing a template-based application to analyze and detect security events in logs that are available in cloud environments. We focus on authentication logs, but analysis modules can be added to flag anomalies in any log.

The deliverables include log analysis, including successive repeated failures, location-based anomalies, and excessive failed login attempts across multiple accounts. To present our findings we output the results to a web interface for …

Structure Of Sheared And Rotating Turbulence: Multiscale Statistics Of Lagrangian And Eulerian Accelerations And Passive Scalar Dynamics, Frank G. Jacobitz, Kai Schneider, Wouter J. T. Bos, Marie Farge

School of Engineering: Faculty Scholarship

The acceleration statistics of sheared and rotating homogeneous turbulence are studied using direct numerical simulation results. The statistical properties of Lagrangian and Eulerian accelerations are considered together with the influence of the rotation to shear ratio, as well as the scale dependence of their statistics. The probability density functions (pdfs) of both Lagrangian and Eulerian accelerations show a strong and similar dependence on the rotation to shear ratio. The variance and flatness of both accelerations are analyzed and the extreme values of the Eulerian acceleration are observed to be above those of the Lagrangian acceleration. For strong rotation it is …

Long-Term Patterns Of Air Temperatures, Daily Temperature Range, Precipitation, Grass-Reference Evapotranspiration And Aridity Index In The Usa Great Plains: Part Ii. Temporal Trends, Meetpal S. Kukal, Suat Irmak

Department of Agricultural and Biological Systems Engineering: Faculty Publications

Detection of long-term changes in climate variables over large spatial scales is a very important prerequisite to the development of effective mitigation and adaption measures for the future potential climate change and for developing strategies for future hydrologic balance analyses under changing climate. Moreover, there is a need for effective approaches of providing information about these changes to decision makers, water managers and stakeholders to aid in efficient implementation of the developed strategies. This study involves computation, mapping and analyses of long-term (1968-2013) county-specific trends in annual, growing-season (1st May- 30th Sept.) and monthly air temperatures [(maximum (T_max), …

Galvanic Corrosion Of Aluminum/Carbon Composite Systems, Eva Håkansson

Electronic Theses and Dissertations

Aluminum/carbon composite systems can have outstanding mechanical properties. Aluminum and carbon fiber reinforced polymer matrix composites (CFRP) are typically considered corrosion resistant when used alone, but can develop severe galvanic corrosion when in physical contact in the same component or structure.

General engineering practice is to avoid contact between aluminum and CFRP in any application where moisture may be present, but it is still of great importance to understand the consequences if the two materials accidentally become in contact. There may also be applications where a low rate of galvanic corrosion is acceptable.

This dissertation contributes unique experimental and numerical …

A Novel Extrusion-Based Additive Manufacturing Process For Ceramic Parts, Amir Ghazanfari, Wenbin Li, Ming Leu, Gregory Hilmas

Faculty Publications, Mechanical Engineering

An extrusion-based additive manufacturing process, called the Ceramic On-Demand Extrusion (CODE) process, for producing three-dimensional ceramic components with near theoretical density is introduced in this paper. In this process, an aqueous paste of ceramic particles with a very low binder content (<1 vol%) is extruded through a moving nozzle at room temperature. After a layer is deposited, it is surrounded by oil (to a level just below the top surface of most recent layer) to preclude non-uniform evaporation from the sides. Infrared radiation is then used to partially, and uniformly, dry the just-deposited layer so that the yield stress of the paste increases and the part maintains its shape. The same procedure is repeated for every layer until part fabrication is completed. Several sample parts for various applications were produced using this process and their properties were obtained. The results indicate that the proposed method enables fabrication of large, dense ceramic parts with complex geometries.

Mechanical And Aerospace Engineering, 2015-2016, College Of Engineering And Applied Sciences

Mechanical and Aerospace Engineering News

• Letter from the Department Chair
• New Faculty
• Student Success
• University NanoSatellite Program P-Spec Mission
• WALI Student Opportunities
• Study of Blind Cane Vibration