Engineering Commons^™

Slides: Engaging Stakeholders, Duane Zavadil

Opportunities and Obstacles to Reducing the Environmental Footprint of Natural Gas Development in Uintah Basin (October 14)

Presenter: Duane Zavadil, Bill Barrett Corporation

5 slides

Slides: Assessing Opportunities And Barriers To Reducing The Environmental Footprint Of Oil And Gas Development In Utah, Douglas Jackson-Smith, Lorien Belton, Brian Gentry, Gene Theodori

Opportunities and Obstacles to Reducing the Environmental Footprint of Natural Gas Development in Uintah Basin (October 14)

Presenter: Dr. Douglas Jackson-Smith, Utah State University--Logan Campus

37 slides

Cal Poly Formulasae Engine Development, Matthew Ales, Rafael Mendoza, Mitchell (Mitch) Thomas, Leon Vinokurov

Mechanical Engineering

This project, engine development, was sponsored by Cal Poly FormulaSAE. The FormulaSAE team proposed this project in order to have a more reliable and more powerful engine for their car, to improve their overall performance at their competition. The baseline output of the engine is 37 hp and 24 lb-ft of torque. The goal of this project was to increase the output to 45 hp, to meet requirements determined by a trade study. We planned to increase the engine’s output using several strategies.

We evaluated all potential design decisions using a Ricardo WAVE model. Ricardo WAVE is a software tool …

Turning Packaging Into Profit, Rihaz Z. Chughatta

Rihaz Z Chughatta

Packaging can be an expensive function to maintain, but it doesn’t have to be. In fact, Packaging can be a source of income for a company. More accurately, what if you took a look at your company’s Profit and Loss and saw Packaging as a negative expense? That’s right, you can turn packaging into profit for your company. How do you accomplish this feat? Glad you asked … read on to find three simple ways to start this process (and satisfy your curiosity) …

Comparative Studies On Oxygen Mass Transfer For The Design And Development Of A Single-Use Fermentor, Kristan L. Sorenson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Accurate experimental oxygen mass transfer coefficient, a measure of how quickly oxygen travels from a gas bubble to the bulk liquid, is important for comparing performance and for evaluating the oxygen transfer capability of a fermentor. Delays in probe response and changing gas volumes upon start-up of gassing affect the accuracy of oxygen transfer measurements. To mitigate these inaccuracies, a standard correction procedure for oxygen mass transfer data was established for highly oxygenated, well-mixed fermentation systems. Probe response time correction was generated by applying a second-order response model to dissolved oxygen probes and shown to be effective within 4%. By …

Facility And Database Design For The Research Development Center, Nicholas J. Mehas

Industrial and Manufacturing Engineering

The purpose of this project is to create a new facility and database design to replace the current Research Development Center located on the campus of California Polytechnic State University San Luis Obispo and the database in use at the facility. Currently the Research Development Center is a condemned building and the database lacks up-to-date technology. The project will develop new designs for both, based on concurrent engineering. The outcome of the project will be a new design for a new building that increases capacity and capability; a new database design that integrates newer technologies and methods for tracking tools.

Mechanical Property Development During Uoe Forming Of Large Diameter Pipeline Steels, Andrii Kostryzhev, Martin Strangwood, Claire L. Davis

Faculty of Engineering and Information Sciences - Papers: Part A

Mechanical properties of large diameter welded steel pipes depend on the thermomechanically controlled rolled (TMCR) plate microstructure and UOE pipe-forming cold deformation sequence. Strength from plate to pipe may increase (work-hardening) or decrease (the Bauschinger effect). Bauschinger effect parameters depend on steel composition and plate processing history. The present study is examining two pipeline grades: X60 (Nb-alloyed) and X65 (Nb- and V-alloyed). Mechanical properties are determined by grain refinement, solid solution, precipitation strengthening mechanisms, and work-hardening (work-softening). The reverse deformation yield drop increases with an increase in the precipitate particle volume fraction and pre-strain. Annealing, leading to a decrease in …

Development Of A Family Of High Strength Low Carbon Microalloyed Ultra-Thin Cast Strip Products Produced By The Castrip® Process, Chris R. Killmore, Kristin R. Carpenter, Harold R. Kaul, James G. Williams, Daniel G. Edelman, Peter C. Campbell, Walter N. Blejde

Faculty of Engineering and Information Sciences - Papers: Part B

The manufacture of high strength strip products in strip thicknesses less than 1.5mm is very challenging for the conventional hot and cold rolled processing routes. A range of Nb and Nb/V microalloyed steels have been successfully strip cast by the CASTRIP process enabling the development of a range of high strength Ultra-Thin Cast Strip (UCS) products. It was found that the CASTRIP process fully exploits the strengthening potential of the low C-Mn-Nb-(V) alloy design system. Substantial strengthening by microstructural hardening was provided by Nb. Retention of Nb and V in solid solution in hot rolled coils enabled further strengthening by …

Phase Development In Carbothermal Reduction Of Ilmenite Concentrates And Synthetic Rutile, Mohammad A. R Dewan, Guangqing Zhang, Oleg Ostrovski

Faculty of Engineering - Papers (Archive)

The phase development in the course of carbothermal reduction of ilmentie concentrates and synthetic rutile was studied in temperature programmed reduction (350–1 600°C) and isothermal reduction at 1 100°C in hydrogen and 1 300°C in argon and helium. Ilmenites and synthetic rutile were reduced in a tube reactor with continuously flowing gas. The rate and extent of reduction were monitored by online off-gas analysis. Samples reduced to different extent were subjected to XRD and SEM/BSE analyses. Pseudorutile and ilmenite were the main phases in ilmenite concentrates; rutile was the main phase in synthetic rutile. The phase changes in the course …

Development Of A Comprehensive Model For Oxygen Steelmaking, Neslihan Dogan, Geoffrey A. Brooks, Muhammad A. Rhamdhani

Faculty of Engineering - Papers (Archive)

One of the main goals in oxygen steelmaking process is to reduce the carbon concentration of the liquid iron effectively. It is understood that the majority of the carbon removal reaction occurs in the emulsion phase via the reaction between metal droplets and the slag phase. An improved understanding of this reaction and the factors controlling the overall rate should provide better control of the process and increase the productivity. In the literature, there is limited knowledge on how to relate the carbon removal rate within the droplets to the overall kinetics of the process under full scale operating conditions. …

Neutron Dosimeter Development Based On Medipix2, Mohd Amir R. Othman, Marco Petasecca, Susanna Guatelli, J. Uher, Damion Marinaro, Dale A. Prokopovich, Mark I. Reinhard, Michael L. F. Lerch, J. Jakubek, S. Pospisil, Anatoly B. Rosenfeld

Faculty of Engineering - Papers (Archive)

A novel neutron dosimetry system for avionics and space applications is described. The new dosimetric system is based on Medipix2, a high density silicon based pixilated detector with integrated readout and digital interface circuitry. Real time dose equivalent response to fast neutron fields with flattened energy response is achieved through the coupling of a structured variable thickness polyethylene (PE) over layer with the high density pixilated detector. Experimental results obtained to 14 MeV D-T and Am-Be neutron fields are described along with a comparison to results obtained with GEANT4 simulations.

Design And Simulation Of Roadway Development Operations To Improve Productivity, Soumya Raghavendra Rao, Christopher D. Cook, Ernest Y. Baafi, R Porteous

Faculty of Engineering - Papers (Archive)

A typical Australian 3–5 Mt/year longwall requires 9 to 15 km of roadway to be developed every year (G. Lewis and G. Gibson: Proc. 13th Austr. Tunnelling Conf., Melbourne, Australia, May 2008, ATS, 317–326.). One of the major challenges faced by the Australian longwall mining industry is that roadway development has been unable to keep pace with improvements in longwall extraction rates. This has affected the profitability, viability and future of underground coal mines (M. Kelly: 'Coordination of roadway development strategy', ACARP report no. C5013, ACARP, Brisbane, Australia, 1997.). Gibson (G. Gibson: 'Australian roadway development– current practices', ACARP report no. …

Embedding Graduate Attribute Development Into The Engineering Curriculum: Less Is More?, Long Nghiem, Thomas L. Goldfinch, Maureen E. Bell

Faculty of Engineering - Papers (Archive)

'Graduate Attributes' is a term which all too frequently sends shivers down the spines of engineering academics. The idea of having to instil a diverse set of professional behaviours and attitudes in youthful engineering students, while still ensuring a level of technical competence, can be intimidating for many. With high stakes associated with accreditation, high level university policy, and external government auditing, there can be perception that addressing as many different attributes as possible in a subject is desirable. Recent research at the University of Wollongong suggests that the idea of tackling several different Graduate attributes may be ineffective. This …

Development Of A Simplified Readout For A Compact Gamma Camera Based On 2×2 H8500 Multi-Anode Pspmt Array, Yujin Qi, Meng Liu, Xuezhu Zhang, Cuilan Zhao, Jian Song, Hualin Zhang

Faculty of Engineering and Information Sciences - Papers: Part A

The aim of this study was to develop a highperformance simplified readout electronic for a compact gamma camera to achieve a maximized performance in its intrinsic spatial resolution. This compact camera is based on a pixellated NaI(Tl) crystal with 1.2 mm×1.2 mm×5 mm pixel element and 1.4 mm pixel pitch coupled to a 2×2 Hamamatsu H8500 multi-anode position sensitive photomultiplier tube (PSPMT) array. The design of the simplified readout is based on novel two-stage charge divisions with Truncated Center-of-Gravity (TCOG) positioning method to maximize the detector performance. The performance of the compact camera with the novel simplified readout was evaluated …

Design And Development Of An Integrated Waste Management System For Huai Nam Khun, Thailand, Annie Duong

Industrial and Manufacturing Engineering

Background

A rural village in Thailand has always been limited in access to waste collection services and processing facilities. As a result, their behaviors of disposing waste in ineffective manners such as dumping and burning causes a variety of environmental impacts. In addition, the people dwelling in these areas are often unaware of the health risks associated to these types of engagements because of the inadequate education system. For a long time coming these circumstances remained untouched until a non-profit organization recently shed light to the need for a solution. An investigation, to develop a design solution in order to …

Caged Morpholino Oligonucleotide For Control Of Gene Expression In Zebrafish, Chad Michael Jarreau

LSU Master's Theses

To control gene expression in vivo with spatial and temporal precision remains a significant hurdle in laboratory studies of development as well as clinical genetic therapies. Here we demonstrate such control over gene expression by use of photochemistry to reversibly inactivate the hybridization of a nucleic acid analog used for specific protein knockdown. A morpholino oligonucleotide, commonly used for knockdown of protein expression in developmental studies, was “caged” using carbodiimide conjugate chemistry which yielded photocleavable adducts that can be removed with light exposure. Photochemical inactivation approaches to produce caged molecules have been used to control the spatiotemporal activity of biomolecules …

Transfer And Development Length Of Strands In Post-Tensioned Members After Anchor Head Failure, Elie El Zghayar

Electronic Theses and Dissertations

Post-tensioning tendons in segmental bridge construction are often only anchored within the deviator and pier segments. The effectiveness of the post-tensioning (PT) system is therefore dependent on proper functioning of the anchorages. On August 28, 2000 a routine inspection of the Mid-Bay Bridge (Okaloosa County, Florida) revealed corrosion in numerous PT tendons. Moreover, one of the 19-strand tendons was completely slacked, with later inspection revealing a corrosion-induced failure at the pier anchor location. Anchorage failure caused all PT force to transfer to the steel duct located within the pier segment that in turn slipped and caused the tendon to go …