Other Engineering Commons^™

Propuestas Y Resultados De Investigación Transmoderna, Translocal Y Digital Desde Jóvenes Semilleristas, Xiomara Gonzalez Gaitan

Institucional

En el presente libro se recopilan las propuestas, avances y resultados de los proyectos en curso de los Semilleros de Investigación de la Universidad de Cundinamarca (Colombia), que se presentaron en el «II Encuentro de Semilleros de Investigación: ciencia, tecnología e innovación en la era digital» en su versión de 2020. Publicamos estos proyectos con la intención de difundir el conocimiento y como muestra del esfuerzo y del alcance de la labor investigadora de los semilleristas de la Universidad de Cundinamarca. Esperamos que los lectores encuentren en estas propuestas caminos para resolver problemas o inspiración para construir nuevas propuestas de …

Atomic Gradiometry Based On The Interference Of Microwave Optical Sidebands, Kaleb L. Campbell

Optical Science and Engineering ETDs

We describe a novel pulsed magnetic gradiometer based on the optical interference of sidebands generated using two spatially separated alkali vapor cells. The sidebands are produced with high efficiency using parametric frequency conversion of a probe beam interacting with Rubiduim 87 atoms in a coherent superposition of magnetically sensitive hyperfine ground states. First, experimental evidence of the sideband process is described for both steady-state and pulsed operation. Then, a theoretical framework is developed that accurately models sideband generation based on density matrix formalism. The gradiometer is then constructed using two spatially separated vapor cells, and a beat-note is generated. The …

Bbt Acoustic Alternative Top Bracing Cadd Data Set-Norev-2022jun28, Bill Hemphill

STEM Guitar Project’s BBT Acoustic Kit

This electronic document file set consists of an overview presentation (PDF-formatted) file and companion video (MP4) and CADD files (DWG & DXF) for laser cutting the ETSU-developed alternate top bracing designs and marking templates for the STEM Guitar Project’s BBT (OM-sized) standard acoustic guitar kit. The three (3) alternative BBT top bracing designs in this release are
(a) a one-piece base for the standard kit's (Martin-style) bracing,
(b) 277 Ladder-style bracing, and
(c) an X-braced fan-style bracing similar to traditional European or so-called 'classical' acoustic guitars.

The CADD data set for each of the three (3) top bracing designs includes …

Interactive Planetarium Project, Eric Babcock, Cody Park, Johann Van Hilst

Discovery Day - Prescott

The Interactive Planetarium Project will design and build the software framework for connectivity between the Digistar 6 planetarium projection software and the smartphones of all audience members in the Jim and Linda Lee Planetarium. The goal of this project is to make planetarium shows more participatory, add a feature to our planetarium shows that many other universities do not yet have, and create a framework for future students and faculty to build from. To demonstrate our technology, we will make a real-time competitive trivia game able to support 60 concurrent users (number of expected audience members in the planetarium).

The …

Critical Infrastructures For Developing Uavs’ Applications And Low-Altitude Public Air-Route Network Planning, Xiaohan Liao, Chenchen Xu, Huping Ye, Xiang Tan, Shifeng Fang, Yaohuan Huang, Jing Lin

Bulletin of Chinese Academy of Sciences (Chinese Version)

Contemporary unmanned aerial vehicles (UAVs) are characterized by huge numbers, wide applications, frequent activities, and massive end-users. High standards of reliability and robustness of the software and hardware systems on board UAVs become imminent for safe operations. UAVs' operations are largely dependent on new technologies and external high-technology infrastructures. Among them, the low-altitude public air-route network is a key new type of infrastructure to ensure the safe and efficient operation of UAVs. A further research and promotion of the low-altitude "sky road" infrastructures as the core is conducive to the development of the urban air traffic network and the promotion …

Tunable Passive Shock And Vibration Isolators For Rotational Isolation, Chase B. Lemaire

LSU Master's Theses

Shock and vibration isolation are a critical need in helmets, which are widely used to protect athletes, workers, soldiers, and astronauts. Passive vibration isolation systems are a good option when mass and volume should be minimized and when the experienced loadings can be predicted. However, it is frequently challenging to find materials and structures which exhibit the optimal vibration and impact isolation properties for an application. As a case study illustrating a novel design paradigm for rotational shock absorption, a family of optimal solutions for the physical properties of American football helmets is presented. Lumped parameter Simulink models simulate a …

Gamma And Neutron Irradiation Effect On Ga-Polar And N-Polar Gan Based Diodes, Farnood Mirkhosravi

Optical Science and Engineering ETDs

III-nitride material (GaN) shows a lot of potential for next-generation power electronics. This material is advantageous due to its wide bandgap, high electron mobility, high thermal and mechanical stability, small form factor, and higher radiation tolerance. The higher radiation tolerance makes the GaN-based devices more attractive for harsh-environment applications, like aerospace, nuclear reactor, and fusion facilities, particle accelerators, and post-detonation environments applications.

GaN due to its unique crystal structure can be grown in different orientations and can provide specific advantages in electronic and optoelectronic devices. While the Ga-polar orientation of GaN has been widely investigated for its proprieties, there are …

In-Situ Observation Of Retained Austenite And Residual Stress Evolutions During Tempering Of Carbonitrided Din 1.6587 Alloy Steel, Richard J Katemi

Tanzania Journal of Engineering and Technology (TJET)

This paper investigates the evolution of retained austenite and residual stresses during and after tempering of carbonitrided 18CrNiMo7-6 low alloy steel carried out using in-situ X-ray diffraction technique. In this case, two carbonitriding treatments with different surface the retained austenite contents of 20 and 54 mass.-% are investigated. The tempering is carried out in a continuous heating mode to 650°C as well as in isothermal mode at holding temperature of 170, 240, and 300°C for 2 hours. During continuous heating at a heating rate of 10°C/min, the retained austenite started to decompose at 290°C. On isothermal holding at 170°C for …

Estimation Of Storage Tank Capacities For Different Roofing Areas For Rainwater Harvesting In Dodoma Urban, Tanzania, Ombeni J. Mdee

Tanzania Journal of Engineering and Technology (TJET)

This study uses a mass balance model and economic analysis technique to present an estimation of roofing areas and storage tank capacity for Rainwater Harvesting (RWH) system. The water-saved benefits were estimated using the monthly rainfall of over 39 years from 1981 to 2020 and five roofing areas. The proposed roof-storage-ratio method presents the minimum requirement of roof area and storage tank size when the ratio value is closer to 1. The benefit-cost ratio and percentage of reliability indicated the optimal roofing areas ranging between 200 and 300 m2 for storage tank capacity between 20 and 25 m3, with a …

Bbt Side Mold Assy, Bill Hemphill

STEM Guitar Project’s BBT Acoustic Kit

This electronic document file set covers the design and fabrication information of the ETSU Guitar Building Project’s BBT (OM-sized) Side Mold Assy for use with the STEM Guitar Project’s standard acoustic guitar kit. The extended 'as built' data set contains an overview file and companion video, the 'parent' CADD drawing, CADD data for laser etching and cutting a drill &/or layout template, CADD drawings in AutoCAD .DWG and .DXF R12 formats of the centerline tool paths for creating the mold assembly pieces on an AXYZ CNC router, and support documentation for CAM applications including router bit specifications, feeds, speed, multi-pass …

Characterization And Performance Enhancement Of Cement-Based Thermoelectric Materials, Ruchita Jani, Niall Holmes Dr., Roger West, Kevin Gaughan, Xiaoli Liu, Ming Qu, Esther Orisakwee, Lorenzo Stella, Jorge Kohanoff, Hongxi Yin, Bartlomiej Wojciechowski

Articles

Thermoelectric materials enable the direct conversion of thermal to electrical energy. One application of this is ambient heat energy harvesting where relatively stable temperature gradients existing between the inside and outside of a building could be utilized to produce electricity. Buildings can thus change from energy consumers to energy generators. This could ultimately help reduce the surface temperatures and energy consumption of buildings, especially in urban areas. In this paper, research work carried out on developing and characterizing a cement-based thermoelectric material is presented. Cement-based samples are doped with different metal oxides (Bi2O3 and Fe2O3) to enhance their thermoelectric properties, …

Process Support Building Savannah River Site, Victoria Zawacki

Fire Protection Engineering: Culminating Experience Project Reports

A report on the fire and life safety analysis of the Savannah River Site Process Support Building is required in order to receive a Master of Science in Fire Protection Engineering from the California Polytechnic State University, San Luis Obispo. The Process Support Building is a two-story office building that was first occupied in 2013, with a floor area of approximately 10,000 ft2. The building contains mainly personal offices, but also contains conference and turnover rooms, a Computer Simulation Room, an Observation Room, and a lunch area. The analysis includes both prescriptive and performance-based analysis.

The Process Support Building is …

Fire Protection And Life Safety Analysis Of A University Conference Center, Amanda Beck Larkin

Fire Protection Engineering: Culminating Experience Project Reports

This project report analyzes various aspects of fire protection and life safety design for a University Conference Center, for both prescriptive and performance-based designs. The University Conference Center is a ten-story, high-rise building comprised of various gathering spaces, ranging from small conference rooms to large assembly spaces with auditorium-style seating. The building has a large two-story podium with basement below, with a smaller floor plate, ten-story tower offset to one side.

In the prescriptive analysis, no deficiencies were noted in the water-based suppression or fire resistance analysis. The building construction type, height, area, number of stories, wall and structural ratings, …

Fire Protection Analysis Project – 9220 Zanzibar Lane Maple Grove, Mn, Brian Vandal

Fire Protection Engineering: Culminating Experience Project Reports

This report contains an analysis of the life safety and fire protection features of a four-story apartment building in Maple Grove, Minnesota. The report is a part of the final project intended to meet the requirements for the Culminating Experience of the California Polytechnic Master of Science Fire Protection Engineering Program.

The apartment building chosen for the analysis is a mixed-use four-story wood-framed structure. The first floor of this structure includes office space for building management, a meeting space, and various electrical and mechanical spaces as well as apartments. There are exit stairways on each end of the structure extending …

Warren Baker Center For Science And Mathematics- Fire Protection And Life Safety Analysis, Logan Honeycutt

Fire Protection Engineering: Culminating Experience Project Reports

This report covers an analysis of the fire protection features within the Warren Baker Center for Science and Mathematics Building. This document first discusses the prescriptive requirements for the building as determined by applicable code. The items to be discussed, as they relate to prescriptive requirements, include the means of egress and relatable components, fire resistive construction, fire alarm system, fire sprinkler system, and smoke control system. All components were analyzed and compared to each applicable code to assess whether these specific fire protection systems were designed correctly.

In addition to an analysis of the prescriptive measures in this facility, …

La Universal, Jose Emilio Salgado Florencia

Fire Protection Engineering: Culminating Experience Project Reports

The purpose of this project was to analyze and compare the existing fire protection systems in “LA UNIVERSAL” building to current applicable codes and standards. Both prescriptive based analysis and performance-based analyses were performed.

The prescriptive based analyses included analyzing the structural fire protection, fire suppression, fire alarm, and egress systems. There are many fire protection features that do not meet the requirements established by the NFPA standards. The fire alarm panel does not provide enough address for the required number of devices required in the building. Emergency lights do not provide the minimum illumination established in NFPA 101. The …

Prescriptive And Performance-Based Analysis Of Colorado Liberal Arts College, Victor Wight

Fire Protection Engineering: Culminating Experience Project Reports

This project consists of a prescriptive and performance-based analysis of an existing two-story college building. The building is located in downtown Colorado Springs, Colorado. Colorado Liberal Arts College is used for general education courses with the focus on creative fields such as dance, graphic design, and art. The building consists of classrooms, offices, an art gallery, dance studio, and a bookstore.

A prescriptive based design was completed using the code requirements laid out in the International Building Code (IBC) 2015 Edition and applicable National Fire Protection Association (NFPA) Codes. The prescriptive based analysis consisted of analyzing life safety and egress, …

Two-Storey Office Building, Colin Mallett

Fire Protection Engineering: Culminating Experience Project Reports

This FPE 596 culminating project report was developed to meet the requirements for completion of the Fire Protection Master’s Program at Cal Poly. The report is intended to provide a detailed understanding of fire and building code requirements as well as describe both prescriptive and performance based approaches to human behavior in fire scenarios, building evacuation strategies, egress design and tenability analysis. An overall determination will be made to evaluate if the building provides the expected levels of safety for building occupants from fire.

The office building #211 was designed and constructed to be compliant with the International Building Code …

Mount Sac Gym & Aquatics Center: Fire & Life Safety Report, Alex Hoeft

Fire Protection Engineering: Culminating Experience Project Reports

This report has been prepared to review and analyze the Fire and Life Safety status of the proposed Gym & Aquatics building at Mt. San Antonio College. This was done using two methods: prescriptive and performance based. The prescriptive section examines the explicitly code-mandated requirements for the building and the performance-based section examines implicit requirements for the building based on the goals presented in the Life Safety Code, NFPA 101.

The subject building is a 147,000 square foot, two-story, steel-framed athletics complex occupied primarily for assembly and business uses. The structure has an indoor and outdoor component with two gymnasiums …

Existing Multipurpose Assembly Building, Garrett Mitchell Pelton

Fire Protection Engineering: Culminating Experience Project Reports

This report contains the compliance and life safety review of a multi-purpose assembly use building located in Denver, Colorado. The analysis contained within analyzes the prescriptive requirements of the structure as it stands today and then later reviews an alternative approach utilizing a performance based analysis. Due to this determination the building is evaluated as is and it is noted there are particular features that as a newly constructed building would require a different compliance approach.

This building was originally constructed in 1965 and has undergone two major additions. The East addition added the entire lower level in 1978 and …

Grange Insurance Audubon Center-Fire Protection Life Safety Report, Gabriel Levy

Fire Protection Engineering: Culminating Experience Project Reports

This technical approach narrative presents the intent and methodology of the Fire Protection and Life Safety systems for the Grange Insurance Audubon Center located at 505 W Whittier St. Columbus OH 43215. The primary goal of the structure is to provide life and property protection in a fire scenario while taking into account the costs of implementing the criterion and risks associated with the facility. This will be achieved through the appropriate application of requirements listed in the 2015 International Building Code (IBC) and the International Fire Code (IFC) as adopted by the City of Columbus, Ohio, and any reference …

Jack E Brown Chemical Engineering Building At Texas A&M University, Daniel Higdon

Fire Protection Engineering: Culminating Experience Project Reports

The Jack E Brown Chemical Engineering building at Texas A&M is located in College Station, TX. While this building is dedicated to chemical engineering, it serves many different departments as they use the lecture halls on the first floor. It was built and opened in 2004 and has 206,500 square feet with 7 stories. The building consists of multiple labs as well as study hall rooms, computer labs, offices, and the normal MEP/storage rooms. Jack E Brown building is one of the foremost buildings of the Texas A&M engineering quadrant and is further proof that Texas A&M desires to keep …

Robust And Accurate Estimation Of Cellular Fraction From Tissue Omics Data Via Ensemble Deconvolution, Manqi Cai, Molin Yue, Tianmeng Chen, Jinling Liu, Erick Forno, Xinghua Lu, Timothy Billiar, Juan Celedón, Chris Mckennan, Wei Chen, Jiebiao Wang

Engineering Management and Systems Engineering Faculty Research & Creative Works

Motivation: Tissue-level omics data such as transcriptomics and epigenomics are an average across diverse cell types. To extract cell-type-specific (CTS) signals, dozens of cellular deconvolution methods have been proposed to infer cell-type fractions from tissue-level data. However, these methods produce vastly different results under various real data settings. Simulation-based benchmarking studies showed no universally best deconvolution approaches. There have been attempts of ensemble methods, but they only aggregate multiple single-cell references or reference-free deconvolution methods. Results: To achieve a robust estimation of cellular fractions, we proposed EnsDeconv (Ensemble Deconvolution), which adopts CTS robust regression to synthesize the results from 11 …

Cable Transit De-Icing Project, Brooke Marvin, Christian Degrood, James Lavelle, Shanna Plouff

General Engineering

Holmes Solutions has presented two projects that require similar solutions - ice removal from the Switchback and the Whoosh, with the Switchback’s cables currently being the primary focus. The Frost Fighters have been tasked to find a way to stop ice formation on the Switchback’s cables so that the ride can operate safely in cold climates and during the colder months of the year. To be an adequate solution, the chosen de-icing method must operate in temperatures from -10°C to 40°C and be on standby in temperatures from -40°C to 60°C. In addition, it must prevent any falling debris that …

Non-Destructive Material Analysis Of Metals And Composites Via Thermography, Jonathan R. Doubt, James L. Chapman

Materials Engineering

The Naval Surface Warfare Center, Port Hueneme Division, is interested in the development of non-destructive damage assessment of shipboard materials via drones at distance. Long Pulsed Thermography (LPT), a method of non-destructive evaluation, was investigated as a possible method for detecting damage in metals (5005h24 Al alloy and 1008 carbon steel) and composites (aramid fiber honeycomb sandwich structure) at distances from 0.5 m to 3.0 m. LPT was conducted using two 1000 W can lights to heat the samples, and a FLIR E8-XT thermal camera. The images were then analyzed using ImageJ software to determine if damage could be detected …

Eagle Medical Tray Denesting & Debris Removal Process, Nicholas Allen Ungefug, Noah Chavez, Susana Shu-Lin Okhuysen, Michael Augustine Pennington

Industrial and Manufacturing Engineering

Eagle Medical Incorporated is a contract medical device packaging and sterilization company. The company purchases thermoformed medical packaging trays, which maintain the sterility of medical devices, from various manufacturers. To ensure packaging quality and to prevent cleanroom contamination, Eagle Medical inspects and sterilizes each blister tray that they order. This process is an essential non-value-added activity that creates a bottleneck. Cleanroom employees must stop packaging medical devices and attend to the processing of blister trays and packaging solutions. The blister trays arrive at Eagle’s facility in nested stacks. Vibration and movement during shipping further compresses the stacks, which makes separation …

Smartphone Control Of Rc Cars, Weston R. Fitzgerald

Electrical Engineering

The smartphone-controlled RC (remote-controlled) car is an inexpensive remote-controlled car designed to be fast and portable. Instead of manufacturing, packaging, and shipping a separate controller, the remote control is implemented in a phone application, which saves time and money in both the design process and the manufacturing process. Utilizing the user’s smartphone is more cost-effective since mobile devices are a common recurrence, and packaging fewer devices results in overall better portability of the product.

This smartphone-controlled car is speedy and intuitive to learn for typical smartphone users. The user can change the car’s speed and direction wirelessly using their phone; …

Fire Safety Management Plan For South Texas Project Turbine Generator Building, Brett Long

Fire Protection Engineering: Culminating Experience Project Reports

This report includes a fire protection and life safety analysis of the South Texas Project Turbine Generator Building (TGB). This analysis was done to fulfill the requirement for the Master of Science Degree in Fire Protection Engineering from California Polytechnic State University. The Turbine Generator Building consists of three elevations and is Type II-B construction. The TGB’s primary use is a special-purpose industrial building housing the turbine generator, main feed pumps, condensate pumps, condenser, feed water re-heaters, secondary cold chemistry lab, Balance-of-Plant (BOP) diesel, batteries, and switchgear, 13.8 kVA switchgear, and various other systems and components. This analysis consists of …

Fire Protection And Life Safety Analysis Of The Adult Education Facility, William K.W. Bridges

Fire Protection Engineering: Culminating Experience Project Reports

The objective of this report is to provide an analysis of an existing building’s prescriptive-based and performance-based design methods. The intention is to provide the building owner with a working assessment of the building’s current life safety situation, as well as providing recommendations to improve the overall life safety and property protection of the selected building. This report is developed following the writing style and structure to meet the requirement for the Master of Science Degree in Fire Protection Engineering from California Polytechnic State University. The analysis includes an evaluation of the building owner’s fire and safety program for the …

Design Of A Proprioceptive Actuator Utilizing A Cycloidal Gearbox, Craig John Kimball

Master's Theses

Legged robotics creates the demand for high torque compact actuators able to develop high instantaneous torque. Proprioceptive actuator design theory is a design theory that removes the need for a torque feedback device and relies on the stiffness in the leg for absorbing the high Ground Impact Forces created by walking locomotion. It utilizes a high torque density motor paired with a gearbox with a high gear ratio for torque multiplication. Previously work has been done to design a proprioceptive actuator design that utilizes a planetary gearbox to create a modular low-cost actuator for legged robotics. The purpose of this …