Engineering Commons^™

Design And Implementation Of Iso:9001 Standards At Sigma 6 Electronics, Inc., Robert Kirkpatrick, Dylan Geisen, Simon Schermerhorn

Industrial Technology and Packaging

ISO 9001 certification is a very long process that can take even the most dedicated team years to complete. For smaller companies such a process could be costly, confusing, and arduous. While many resources exist, it takes nearly the same amount of effort to tailor fit the examples as it does to create a whole new set.

The purpose of this senior project is to research examples and help fit them to a small manufacturing company, Sigma 6 Electronics, Inc. An interlinked, or combined, quality manual/procedures were chosen to aid Sigma 6 Electronics through making the documentation clear and perfectly …

U-Pu-Zr Alloy Design By Ternary Potts-Phase Field Modeling, Jordan Jeffrey Cox

Theses and Dissertations

U-Pu-Zr nuclear fuels experience a redistribution of constituents and a number of phase transformations when subjected to the thermal gradient present in nuclear reactors. This redistribution and phase separation leads to several undesirable fuel performance issues. In an effort to better understand how different alloys compositions are affected by this thermal gradient, we utilize the recently introduced Hybrid Potts-phase Field Method to study the U-Pu-Zr system. The recently introduced Hybrid method couples microstructural and compositional evolutions of a system so that the two phenomena can be studied together rather than separately, as is frequently done. However, simulation of the U-Pu-Zr …

Corrosion-Resistant Glasses For Steel Enamels, Richard K. Brow, Signo Tadeu Dos Reis, Michael L. Koenigstein, Genda Chen

Materials Science and Engineering Faculty Research & Creative Works

A cementitious composite material wherein glass-coated steel rods are positioned in a cementitious matrix. The glass composition for coating the steel reinforcing rods includes between about 33-45 weight percent SiO₂, 13.5-19.5 weight percent B₂O₃, 3.5-4.6 weight percent Al₂O₃, 4.0-13.5 weight percent K₂O, 5.5-15.5 weight percent ZrO₂, 8.6-15.9 weight percent Na₂O, 4.6-5.1 weight percent CaO, 0.6-0.7 weight percent MnO₂, 1.0-1.0 weight percent NiO, and 1.0-1.1 weight percent CoO. The glass composition is typically in compression on the rods at ambient temperatures, has a …

Structural Study Of Na2o-Feo-Fe2o3-P 2o5 Glasses By High-Pressure Liquid Chromatography, Lina Ma, Richard K. Brow

Materials Science and Engineering Faculty Research & Creative Works

Three series of Na₂O-FeO-Fe₂O₃-P₂O₅ glasses with compositional ranges of 3.25 < O/P < 3.5 and 0 < Fe/P < 0.67 were prepared. Glass structure was studied using high-pressure liquid chromatography (HPLC). The average chain-length of phosphate anions decreases with increasing O/P ratios and glasses with similar O/P ratios and greater Fe/P ratios have wider distributions of phosphate anion lengths due to disproportionation reactions in the glass melts. © 2013 Elsevier B.V.

2014 Directory Of Indiana State, County, City And Town Officials Responsible For Road And Street Work, Indiana Ltap

Indiana Local Technical Assistance Program (LTAP) Directory

Contact information for local agency officials and employees responsible for Indiana’s local road infrastructure.

Scitech News [Full Issue]

Sci-Tech News

No abstract provided.

Bs News March/April

Building Services Engineering

No abstract provided.

Rupture To Rafters To Response: Completing The Loop Of Earthquake Science, Engineering And Policy, Ting Lin

Civil and Environmental Engineering Faculty Research and Publications

No abstract provided.

2014 (Spring) Ensi Informer Magazine, Morehead State University. Engineering Sciences Department

ENSI Informer Magazine Archive

The ENSI Informer Magazine published in the spring of 2014.

Passive Biaxial Mechanical Properties And In Vivo Axial Pre-Stretch Of The Diseased Human Femoropopliteal And Tibial Arteries, Alexey Kamenskiy, Iraklis I. Pipinos, Yuris A. Dzenis, Clay Lomneth, Syed A. Jaffar Kazmi, Nicholas Y. Phillips, Jason N. Mactaggart

Department of Mechanical and Materials Engineering: Faculty Publications

Surgical and interventional therapies for atherosclerotic lesions of the infrainguinal arteries are notorious for high rates of failure. Frequently, this leads to expensive reinterventions, return of disabling symptoms, or limb loss. Interaction between the artery and repair material likely plays an important role in reconstruction failure, but data describing the mechanical properties and functional characteristics of human femoropopliteal and tibial arteries are currently not available. Diseased superficial femoral (SFA, n=10), popliteal (PA, n=8), and tibial arteries (TA, n=3) from 10 patients with critical limb ischemia were tested to determine passive mechanical properties using planar biaxial extension. All …

Singing Arc, Justin Kis

Electrical Engineering

This project aims to develop a singing arc. A singing arc is commonly, though mistakenly, referred to as a plasma speaker. Whereas a traditional speaker uses a pulse width modulated (PWM) signal to move an electromagnet, which in turn moves a cone, which generates sound waves, the singing arc sends a PWM signal through a standing spark, which vibrates, which generates sound waves.

Several plans for the singing arc are readily available online. This project will analyze the similarities between a selection of them, try to eliminate any faults in design, and improve the function of the circuit. The final …

Analytical Models For Distribution Of The Envelope And Phase Of Linearly Modulated Signals In Awgn Channel, Taleb Moazzeni, Yingtao Jiang, Henry Selvaraj, Tianding Chen

Electrical & Computer Engineering Faculty Research

In this paper, analytical expressions for the distribution of the envelope and phase of linearly modulated signals such as BPSK, M-PSK, and M-QAM in AWGN are presented. We perform numerical simulations for different orders of signal constellations. The results show that the proposed theoretical models are in excellent agreement with the estimated distributions from various numerical experiments.

Fire Protection Life Safety Analysis- Bachelor Enlisted Quarters, Kyle C. Leadon

Fire Protection Engineering: Culminating Experience Project Reports

This Bachelor Enlisted Quarters (BEQ) shall be constructed, arranged, equipped, maintained, and operated in accordance with this report and applicable criteria to ensure a minimum level of life safety and property protection is provided from actual and potential fire hazards. The goal is to ensure the occupants are provided with an environment that is reasonably safe from fire. We accomplish this goal by protecting occupants not intimate with the initial fire development, and by improving the survivability of occupants intimate with the initial fire development. The protection described in this report takes on many forms, from active protection, such as …

The Trackpacer, Alexandra Kline

Liberal Arts and Engineering Studies

Competitive and recreational runners struggle to maintain a target pace during workouts and currently have no easy-to-see visual feedback on their pace. Lack of real-time, easy-to-see pace feedback makes it difficult for athletes to maintain a target pace and thereby makes their workouts less effective. Some GPS watches provide pacing feedback, but they are impossible to read while running hard.

Pacing is a basic yet essential component of track and field, no matter what type of running event is taking place. During practice, certain paces are prescribed to evoke certain physiological responses from athletes. For example, a coach might ask …

Compact Fmcw Radar For Gps-Denied Navigation And Sense And Avoid, James David Mackie

Theses and Dissertations

Location information is vital for any type of aircraft and even more crucial for Unmanned Aerial Systems (UAS). GPS is a readily available solution but signals can easily be jammed or lost. In this thesis, radar is explored as a backup system for self-localization when GPS signals are not available. The method proposed requires that an area be pre mapped by collecting radar data with known latitude and longitude coordinates. New radar data is then collected and compared to previously stored values. Channel matrices are stored at each point and are used as the basis for location comparisons. Various methods …

Me-Em Enewsbrief, March 2014, Department Of Mechanical Engineering-Engineering Mechanics, Michigan Technological University

Department of Mechanical and Aerospace Engineering eNewsBrief

No abstract provided.

Decreasing The Power Consumption Of Hybrid Electric Vehicle Architectures, Domenic Leo Barsotti

Doctoral Dissertations and Master's Theses

This paper presents the challenges seen by current automotive manufacturers in their investigation of more fuel efficient vehicles. The two main areas for improvement are aerodynamics and passive cooling of electrical systems. Aerodynamics of an Ahmed body is investigated with a drag reduction system proposed utilizing slot jets at the rear of the bluff body . Two separate systems show a decrease in drag of 16 and 25%. The paper also investigates the use of a phase change material for a hybrid electric vehicles energy storage system cooling. Phase change materials take advantage of the latent heat of fusion to …

Assessing The Impact Of Water Filters And Improved Cook Stoves On Drinking Water Quality And Household Air Pollution: A Randomised Controlled Trial In Rwanda, Ghislaine Rosa, Fiona Majorin, Sophie Boisson, Christina Barstow, Michael Johnson, Miles Kirby, Fidele Ngabo, Evan A. Thomas, Thomas Clasen

Mechanical and Materials Engineering Faculty Publications and Presentations

Diarrhea and respiratory infections remain the biggest killers of children under 5 years in developing countries. We conducted a 5-month household randomised controlled trial among 566 households in rural Rwanda to assess uptake, compliance and impact on environmental exposures of a combined intervention delivering high-performance water filters and improved stoves for free. Compliance was measured monthly by self-report and spot-check observations. Semicontinuous 24-h PM2.5 monitoring of the cooking area was conducted in a random subsample of 121 households to assess household air pollution, while samples of drinking water from all households were collected monthly to assess the levels of thermotolerant …

On The Growth Rate Of Turbulent Mixing Layers: A New Parametric Model, Jeffrey L. Freeman

Master's Theses

A new parametric model for the growth rate of turbulent mixing layers is proposed. A database of experimental and numerical mixing layer studies was extracted from the literature to support this effort. The domain of the model was limited to planar, spatial, nonreacting, free shear layers that were not affected by artificial mixing enhancement techniques. The model is split into two parts which were each tuned to optimally fit the database; equations for an incompressible growth rate were derived from the error function velocity profile, and a function for a compressibility factor was generalized from existing theory on the convective …

Compacting Loads And Stores For Code Size Reduction, Isaac Asay

Master's Theses

It is important for compilers to generate executable code that is as small as possible, particularly when generating code for embedded systems. One method of reducing code size is to use instruction set architectures (ISAs) that support combining multiple operations into single operations. The ARM ISA allows for combining multiple memory operations to contiguous memory addresses into a single operation. The LLVM compiler contains a specific memory optimization to perform this combining of memory operations, called ARMLoadStoreOpt. This optimization, however, relies on another optimization (ARMPreAllocLoadStoreOpt) to move eligible memory operations into proximity in order to perform properly. This mover optimization …

Learning About Led Lighting Technology Through Patents, Joe C. Liu

Master's Theses

Patents and published patent applications are valuable resources to students, engineers, and researchers for learning about technology. This thesis investigated the ability to learn about a technology through the disclosures that are made in published patent applications and issued patents.

This thesis first provides an overview of U.S. patent law, system, and resources that are available to the public. It is through an understanding of U.S. patent law and system that one can appreciate that patents and patent applications are a resource for learning about technology.

By providing the basic building blocks of LED lighting technology as learned through the …

Investigation Of Degradation Effects Due To Gate Stress In Gan-On-Si High Electron Mobility Transistors Through Analysis Of Low Frequency Noise, Michael Curtis Meyer Masuda

Master's Theses

Gallium Nitride (GaN) high electron mobility transistors (HEMT) have superior performance characteristics compared to Silicon (Si) and Gallium Arsenide (GaAs) based transistors. GaN is a wide bandgap semiconductor which allows it to operate at higher breakdown voltages and power. Unlike traditional semiconductor devices, the GaN HEMT channel region is undoped and relies on the piezoelectric effect created at the GaN and Aluminum Gallium Nitride (AlGaN) heterojunction to create a conduction channel in the form of a quantum well known as the two dimensional electron gas (2DEG). Because the GaN HEMTs are undoped, these devices have higher electron mobility crucial for …

Tunnel Road Safety: A Look At Older Drivers' Performance And Sight Impairment, Edith Lopez

Master's Theses

In California, there is an observed trend in which collisions cluster in and around tunnels. The break in road continuity created by the tunnels disturbs traffic flow that can lead to collisions. One of the main contrasts between open roads and tunnel roads occurs in lighting. Drivers with sight deficiencies are unable to adapt their sight to the change in the lighting environment and may crash due to misperception of road alignment, vehicle’s speed and other physiological reactions, such as tension. The suspect population group of crashes occurring under the influence of tunnels conditions is older drivers.

The literature suggests …

Flight And Stability Of A Laser Inertial Fusion Energy Target In The Drift Region Between Injection And The Reaction Chamber With Computational Fluid Dynamics, Tiffany Leilani Mitori

Master's Theses

A Laser Inertial Fusion Energy (LIFE) target’s flight through a low Reynolds number and high Mach number regime was analyzed with computational fluid dynamics software. This regime consisted of xenon gas at 1,050 K and approximately 6,670 Pa. Simulations with similar flow conditions were performed over a sphere and compared with experimental data and published correlations for validation purposes. Transient considerations of the developing flow around the target were explored. Simulations of the target at different velocities were used to determine correlations for the drag coefficient and Nusselt number as functions of the Reynolds number. Simulations with different target angles …

Low Speed Re-Fuelling Of Unmanned Aerial Vehicles Using The Drogue System, Ian R. Mcandrew, Elena Navarro

Publications

Unmanned Aerial Vehicles (UAV) are being required to be used in more and more complex situations with larger payloads for extended periods of time. Increasing the expectations and operating ceiling requires increased amounts fuel, that thus limits the potential payloads. This dichotomy has led to the quest for more fuel efficient UAVs; however, when designs are improved then their expectations are increased further. In manned aircraft this can be achieved by in-flight re-fuelling. This research is focused on the process of re-fuelling a UAV at low speeds and the aerodynamics considerations and problems it potentially brings. Practical conclusions to these …

A Review Of Active Management For Distribution Networks: Current Status And Future Development Trends, Junhui Zhao, Bo Zhao, Feng Lin, Quan Zhou, Yang Wang, Caisheng Wang

Electrical & Computer Engineering and Computer Science Faculty Publications

Driven by smart distribution technologies, by the widespread use of distributed generation sources, and by the injection of new loads, such as electric vehicles, distribution networks are evolving from passive to active. The integration of distributed generation, including renewable distributed generation changes the power flow of a distribution network from unidirectional to bi-directional. The adoption of electric vehicles makes the management of distribution networks even more challenging. As such, an active network management has to be fulfilled by taking advantage of the emerging techniques of control, monitoring, protection, and communication to assist distribution network operators in an optimal manner. This …

Fuzz Pedal Design Project, Kyle Schaefer

Biomedical Engineering

The purpose of this project was to design and build a high quality, yet affordable, analog “fuzz” guitar pedal kit to be sold to other members of Cal Poly’s Audio Engineering Society. The Audio Engineering Society (AES) has hosted pedal-building projects in the past, but my project partner Michael Twardochleb first had the idea to build an original kit to be officially affiliated with the club. Michael had built other pedals of his own in the past, making him an excellent partner to have for this project. Our design was based on the classic Vox Tonebender’s circuit, which was in …

Using Multimedia Online Learning Tools To Supplement The Classroom Instruction, Cassandra Gribbins, Lulu Sun

Publications

This paper introduces the use of multimedia tools to create an online self-study environment to supplement the classroom instruction in Graphical Communications. The topics in this course extend from hand sketching demonstrations to the solid model creation using CAD software such as CATIA. Webcam and Camtasia software were used to capture live examples and the recorded videos were placed on Blackboard. Multimedia tools provide students an efficient way to review the topics covered in the class, in that hand sketching and complex CAD models are often difficult to interpret through words and pictures alone. The positive survey results reflect an …

Diffuse Reflectance Spectroscopy Of Epithelial Tissue With A Smart Fiber-Optic Probe, Bing Yu, Amy Shah, Vivek K. Nagarajan, Daron G. Ferris

Biomedical Engineering Faculty Research and Publications

Diffuse reflectance spectroscopy (DRS) with a fiber-optic probe can noninvasively quantify the optical properties of epithelial tissues and has shown the potential as a cost-effective, fast and sensitive tool for diagnosis of early precancerous changes in the cervix and oral cavity. However, current DRS systems are susceptible to several sources of systematic and random errors, such as uncontrolled probe-to-tissue pressure and lack of a real-time calibration that can significantly impair the measurement accuracy, reliability and validity of this technology as well as its clinical utility. In addition, such systems use bulky, high power and expensive optical components which impede their …

Classification Of Human Retinal Microaneurysms Using Adaptive Optics Scanning Light Ophthalmoscope Fluorescein Angiography, Michael Dubow, Alexander Pinhas, Nishit Shah, Robert F. Cooper, Alexander Gan, Ronald C. Gentile, Vernon Hendrix, Yusufu N. Sulai, Joseph Carroll, Toco Y.P. Chui, Joseph B. Walsh, Rishard Weitz, Alfredo Dubra, Richard B. Rosen

Biomedical Engineering Faculty Research and Publications

Purpose.

Microaneurysms (MAs) are considered a hallmark of retinal vascular disease, yet what little is known about them is mostly based upon histology, not clinical observation. Here, we use the recently developed adaptive optics scanning light ophthalmoscope (AOSLO) fluorescein angiography (FA) to image human MAs in vivo and to expand on previously described MA morphologic classification schemes.

Methods.

Patients with vascular retinopathies (diabetic, hypertensive, and branch and central retinal vein occlusion) were imaged with reflectance AOSLO and AOSLO FA. Ninety-three MAs, from 14 eyes, were imaged and classified according to appearance into six morphologic groups: focal bulge, saccular, fusiform, mixed, …