Engineering Commons^™

Assessing The Seismic Performance Of 45 Ft And 65 Ft Special Truss Moment Frames (Stmfs) Designed With Proposed 2027 Aisc Seismic Provisions Using Nonlinear Time-History Analysis, Vesal Shakibaie

Civil Engineering Theses - Archive

This thesis presents a comprehensive investigation into the seismic design and performance of Special Truss Moment Frames (STMFs) with long spans, focusing on two configurations: STMFs with Vierendeel panels and those with X-braced diagonals in the special segment. The study assesses two case studies with spans of 45 ft and 65 ft, analyzing their behavior under Design Basis Earthquake (DBE) and Maximum Considered Earthquake (MCE) scenarios. The structures were designed according to the latest proposed 2027 revision of the AISC Seismic Provisions, which includes significant changes compared to the published 2022 version. Nonlinear time-history analysis and nonlinear static (push-over) analysis …

Generating Blood Analog For Laser Induced Fluorescent Particle Image Velocimetry, Chungyiu Ma, Jared Chong, Hang Yi, Zifeng Yang, Luke Bramlage, Bryan Ludwig

Mechanical and Materials Engineering Faculty Publications

To mimic blood non-Newtonian viscosity features under designated temperatures from 305 to 315 K, transparent blood analogs were generated by the mixture of xanthan gum and deionized water with fluorescent particles for laser induced fluorescent particle image velocimetry.

Planning Innovation For Implementing Modular Prefabricated Construction In Housing Development In Indonesia Using A Risk-Based Iso 56002:2019 Approach To Improve Project Performance, Deansa Agya Rahman, Yusuf Latief

Smart City

The development of housing in Indonesia, growing rapidly due to urbanization and population growth, faces challenges in terms of land, labor, and housing backlog. Despite being innovative, modular prefabrication methods are limited by unattractive designs and high costs, slowing down construction, harming the productivity of construction companies, and hindering the growth of the national construction sector. These challenges are prevalent in various countries and are influenced by low knowledge, conservative mindsets, and inhibiting regulations. In Indonesia, additional issues include a lack of mastery of modular prefabrication methods and awareness of long-term benefits. This research identified innovative risk-based applications of modular …

Articulating Balsa Wood Bridge, Cole Blevins

All Undergraduate Projects

The objective of this project was to design and construct an articulating bridge consisting of only balsa wood and glue to meet a set of given requirements. The main requirements include a maximum bridge weight, minimum load to be supported, and a minimum height that the bridge must raise to utilizing an electric motor.

To meet the objective of the project, a series of engineering analyses were completed to determine suitable dimensions and geometry for each component of the bridge and articulation structure. Before conducting analyses for the bridge, a few different truss structures were considered including a Pratt truss, …

Rc Baja: Drivetrain And Chassis, Caden Harris

All Undergraduate Projects

The engineers in the CWU Mechanical Engineering Technology program were asked to design and manufacture a remote-controlled Baja car to compete in several different events. The car was required to compete in a drag race, slalom event, and Baja event against other cars created by engineering students. To compete at the highest level, the cars needed to finely balance ruggedness, weight, torque, and top speed.

This report is dedicated to the designing, manufacturing, and testing of the drivetrain and chassis that supported the RC car as it competed in the school-sanctioned competition; a partner was responsible for the steering and …

Rc Baja: Suspension And Steering, Daniel Davis

All Undergraduate Projects

Engineers enrolled in the Mechanical Engineering Technology program at Central Washington University were tasked with developing a vehicle to compete in the ASME Baja competition. The engineers were in teams of two, one focused on suspension and steering and the other focused on drive train and chassis.

To begin the design of the vehicle, engineering analyses were completed on each of the components to comply with the requirements set by the team. After completion of multiple analyses for the components of the vehicle, the dimensions were validated and have been created in a CAD program to allow for virtual assembly …

Rc Baja: Drivetrain & Chassis, Ahmad Adam

All Undergraduate Projects

The project's primary aim is to employ engineering techniques in the design and construction of an RC Baja car, ensuring the chassis and drivetrain are sufficient for participation in the ASME RC Baja competition. The suspension and steering system were entrusted to a teammate to contribute to the project's success.

In approaching this problem, various analyses were conducted during fall quarter, in deciding the design of the RC car. For example, one analysis established the necessary output power to attain a maximum speed of 25 miles per hour within a 15-second timeframe. The analysis employed acceleration and power equations …

Nasa Rocket Payload Airfoil Deceleration, Brycen Geck

All Undergraduate Projects

NASA Student Launch Initiative gave a requirement that a lander must descend to the ground from a height of 400-800 feet with predetermined human survivability without using parachute or streamers. Around sixty colleges were chosen from around the United States to compete in competition. This competition and data taken will help innovate the rocket and lander programs in full scale space exploration in the future.

Design of the payload involved intensive design, testing and aerodynamic analysis. Majority of the manufacturing revolved around 3D printing, aluminum 5051 sheet and carbon fiber vacuum bagging. PLA and PETG was used on components which …

Articulating Balsa Wood Bridge, Nate Harris

All Undergraduate Projects

This report describes the design, construction, and testing of a small-scale articulating balsa wood bridge that allowed passage over normally impassable terrain. The bridge was required to span a 400mm gap, while also articulating the midpoint of the bridge 140mm above its resting position. The bridge also needed to support a 20kg (44 lbs.) point load in the center of the bridge, and the bridge and articulation tower together needed to weigh less than 85 (0.19 lbs.) grams.

To construct the bridge, statics and mechanics of materials was used to design a truss that was calculated to support the load …

Articulating Balsa Wood Bridge, Samuel K. Katsuda

All Undergraduate Projects

The objective of this project was to design, construct and test an articulating balsa wood bridge. It needed to fit certain requirements such as maintaining the bridge structure and articulation structure weight under 85g, being able to articulate 140mm, and be able to withstand a load of 20kg at the middle. The aim was to both create a product, but also give the student a chance to demonstrate their practical knowledge in engineering and going through the processes.

To complete this project as mentioned the student began by creating an initial design and performing a series of analyses on the …

The Tortuga Drivtrain And Chassis Rc Baja, Roberto C. Vieyra Avalos

All Undergraduate Projects

The students in charge of the project, seniors at Central Washington University were tasked with the design and manufacturing of the RC Baja to compete in the Slalom and Sprint event and the Baja event where the maneuverability and acceleration are demonstrated. The project was divided between Roberto, in charge of the drivetrain and chassis and Rogelio, in charge of the steering and suspension. There were also various requirements like velocity and deflection, ensuring the device reaches 30mph and keeping the deflection of components to a minimum and many others which can be seen in section D of the introduction. …

Dueling Robot, Abigail Coy

All Undergraduate Projects

This project was undertaken as a personal challenge to combine a Mechanical Engineering Technology degree and an Electrical Engineering Technology degree into a single final project showing the cumulative knowledge gained. It was determined that a robot to participate in Western Allied Robotics would be designed and manufactured for the 3 lb. weight class.

A two-part power system was designed to provide more power to the weapon arm. This design combined a compressive spring’s kinetic energy with the torque from the electric motor. Research determined all of the purchased components required and analysis were performed to determine the geometry and …

Special Issue Editorial: Business Innovation For The Sustainable Development Goals, Mohamed Saleem Nazmudeen, Fadzliwati Mohiddin, Stephen Singaraju, Seyed M Buhari

ASEAN Journal on Science and Technology for Development

Welcome to this special issue of the ASEAN Journal on Science and Technology for Development (AJSTD), focused on “Business Innovation for the Sustainable Development Goals (SDGs)." This collection features a robust ensemble of 30 papers that not only highlight innovative business practices across the ASEAN region but also align these innovations with the Sustainable Development Goals. These contributions span a diverse range of disciplines, grouped into five broad categories: Management and Strategy, Financial Innovations, Marketing and Consumer Behavior, Information Technology and Systems, and Environmental and Social Impact.

Entrepreneurship Education In The Lens Of The Senior High School Students, Calvin J. Caliat, Nehmar J. Dalhadi, Kathleen M. Ishmael

ASEAN Journal on Science and Technology for Development

This study uncovers the perspective on the entrepreneurship education of senior high school students on the university campus. This paper is employed a descriptive research design using a survey ques-tionnaire for the respondents. The survey found that respondents are willing to engage in business be-tween one to 10 years after college. The willingness is due to the encouragement from their parents, independent decision-making, building self-confidence and knowledge, and chasing their dreams. However, there are two significant factors that hinder this, including a need for more business investment and experience. The principal attitudes of an entrepreneur include self-control and creativity. Gaining …

Educating For Shalom In Engineering, Julie Wildschut

University Faculty Publications and Creative Works

Created in the image of God, humans have a unique purpose within creation. We are given the task of worshipping God (Isa 43:21), sharing the gospel of Jesus Christ (Mat 28:18-20), discovering and developing the potentials of creation (Gen 2:15), struggling and praying for shalom (Isa 1:17), and celebrating instances of God’s coming kingdom (Isa 9:1-7, Col 1:19-20). As Christian engineering educators, we have the additional task of preparing students to become capable engineers and to use those skills in response to God’s call in their lives. We have the blessing of not only teaching the technical aspects of engineering, …

2023-2024 Annual Security And Fire Report – Sayre Campus, Southwestern Oklahoma State University

ANNUAL SECURITY & FIRE REPORTS

This is the 2023-2024 Annual Security and Fire Report of the Sayre Campus by Southwestern Oklahoma State University.

2023-2024 Annual Security And Fire Report – Weatherford Campus, Southwestern Oklahoma State University

ANNUAL SECURITY & FIRE REPORTS

This is the 2023-2024 Annual Security and Fire Report of the Weatherford Campus by Southwestern Oklahoma State University.

Performance Evaluation Of Composite Utility Structures Under Wildfires And Mitigation Methods, Siddhant Sitoula

Graduate Theses, Dissertations, and Problem Reports (ETD)

The Fiber Reinforced Polymer (FRP) composite utility poles and crossarms have been getting wider attention from the utility industries because of their advantages over the traditional wooden, concrete, and steel poles. Wood is vulnerable to fire, rot, and animal damage. Concrete poles are heavier, increasing both transportation and installation costs of the poles, in addition to limited-service life (40-50 years). Similarly, steel poles have durability and safety concerns because of their inherent corrosive nature and conductivity. These disadvantages are significantly reduced by the use of FRP composites in utility structures because of FRP’s strength, specific gravity, flexibility, non-conductivity and durability …

Engineering Applications Of Artificial Intelligence To Forecast Production Of Shale Wells, Yasir Jassim Alkalby

Graduate Theses, Dissertations, and Problem Reports (ETD)

This study examines the application of artificial intelligence (AI) and supervised machine learning techniques to forecast production from unconventional shale wells, utilizing actual field measurement data over a period of two years. Traditional methods, such as decline curve analysis, offer valuable insights but often fail to fully capture the complex nuances affecting productivity and tend to rely excessively on empirical equations.

In this research, the AI-based Shale Analytics approach, introduced by Mohaghegh in 2017, is employed. This method leverages Big Data Analytics to identify unique patterns from actual field observations, enhancing the evaluation and quantification of various productivity factors, facilitating …

The Impact Stress On The Fracture Conductivity And The Productivity Of The Marcellus Shale Horizontal Well, Simon Hanna Menhem

Graduate Theses, Dissertations, and Problem Reports (ETD)

The increase in effective stress during depletion adversely impacts the productivity of the multi-stage fractured Marcellus shale horizontal well. The geomechanical properties and proppant size influence the degree of shale compaction, the fracture conductivity, and the well productivity. This study seeks to assess the impact of net stress increase during depletion on the productivity of multi-stage fractured Marcellus shale horizontal wells. To investigate the impact of the net stress increase, a model for Bogges-5H well was developed based on the petrophysical and geomechanical properties of the shale obtained from the core plugs and well logs measurements from the pilot (Bogges …

Understanding Learners' Perception Of Virtual Reality-Assisted Learning In Engineering Education, Mohammad Samin Mansur

Graduate Theses, Dissertations, and Problem Reports (ETD)

Virtual reality (VR)-assisted learning may facilitate an immersive and interactive learning environment and enable learners to explore and interact with learning content at their own pace and interest. However, it is still unknown how well VR is received in engineering learning while empowering autonomy and personalization. The objective of this study is to investigate learners' perceptions of VR-assisted learning in engineering education while allowing learners to learn at their own pace, driven by their personal preference. To this end, experiments were conducted, in which thirty engineering students were recruited and immersed in a VR setting designed to deliver an interactive …

Effect Of Water Vapor Desorption On The Performance Of Gallium Nitride Field Emitter Array, Ranajoy Bhattacharya, Pao-Chuan Shih, Tomás Palacios, Jim Browning

Electrical and Computer Engineering Faculty Publications and Presentations

We are exploring the potential of gallium nitride (GaN) field emitter arrays in vacuum channel transistors. This study investigated the impact of ultraviolet (UV) light on the emission properties of large arrays of GaN field emitters. Arrays of 150 × 150 emitters were analyzed before and after UV exposure. With a constant collector voltage of 200 V DC, gate voltage sweeps from 0 to 60 V were applied. The initial I–V measurements showed a rapid increase in emission current, indicating a conditioning effect, settling at a stable value of 1.25 μA after three to five sweeps. Remarkably, exposure to …

Exploring Service Quality Among Us Hajj Pilgrims In Compliance With Vision 2030 Objectives, Majid Abdulmalik Alshaibi

Graduate Thesis and Dissertation 2023-2024

Saudi Arabia is progressing with Vision 2030, an ambitious blueprint for economic variation, global connection, and improved quality of life. The Hajj pilgrimage is addressed by the Doyof Al Rahman Program (DARP), one of the vision's programs aiming to enhance the Hajj experience. The Hajj pilgrimage is one of the world's largest annual massive gatherings and it has already received increased attention from researchers combining elements of pilgrimage and tourism. This dissertation aims to explore Hajj service quality and pilgrims' satisfaction. To attain this objective, a narrative and systematic literature review was conducted to develop a framework with standardized …

Adaptive Beyond Von-Neumann Computing Devices And Reconfigurable Architectures For Edge Computing Applications, Mousam Hossain

Graduate Thesis and Dissertation 2023-2024

The Von-Neumann bottleneck, a major challenge in computer architecture, results from significant data transfer delays between the processor and main memory. Crossbar arrays utilizing spin-based devices like Magnetoresistive Random Access Memory (MRAM) aim to overcome this bottleneck by offering advantages in area and performance, particularly for tasks requiring linear transformations. These arrays enable single-cycle and in-memory vector-matrix multiplication, reducing overheads, which is crucial for energy and area-constrained Internet of Things (IoT) sensors and embedded devices.

This dissertation focuses on designing, implementing, and evaluating reconfigurable computation platforms that leverage MRAM-based crossbar arrays and analog computation to support deep learning and error …

Neurogaze In Virtual Reality: Assessing An Eeg And Eye Tracking Interface Against Traditional Virtual Reality Input Devices, Wanyea Barbel

Graduate Thesis and Dissertation 2023-2024

NeuroGaze is a novel Virtual Reality (VR) interface that integrates electroencephalogram (EEG) and eye tracking technologies to enhance user interaction within virtual environments (VEs). Diverging from traditional VR input devices, NeuroGaze allows users to select objects in a VE through gaze direction and cognitive intent captured via EEG signals. The research assesses the performance of the NeuroGaze system against conventional input devices such as VR controllers and eye gaze combined with hand gestures. The experiment, conducted with 20 participants, evaluates task completion time, accuracy, cognitive load through the NASA-TLX surveys, and user preference through a post-evaluation survey. Results indicate that …

Addressing Challenges In Utilizing Gpus For Accelerating Privacy-Preserving Computation, Ardhi Wiratama Baskara Yudha

Graduate Thesis and Dissertation 2023-2024

Cloud computing increasingly handles confidential data, like private inference and query databases. Two strategies are used for secure computation: (1) employing CPU Trusted Execution Environments (TEEs) like AMD SEV, Intel SGX, or ARM TrustZone, and (2) utilizing emerging cryptographic methods like Fully Homomorphic Encryption (FHE) with libraries such as HElib, Microsoft SEAL, and PALISADE. To enhance computation, GPUs are often employed. However, using GPUs to accelerate secure computation introduces challenges addressed in three works.

In the first work, we tackle GPU acceleration for secure computation with CPU TEEs. While TEEs perform computations on confidential data, extending their capabilities to GPUs …

Internet-Of-Things Privacy In Wifi Networks: Side-Channel Leakage And Mitigations, Mnassar Alyami

Graduate Thesis and Dissertation 2023-2024

WiFi networks are susceptible to statistical traffic analysis attacks. Despite encryption, the metadata of encrypted traffic, such as packet inter-arrival time and size, remains visible. This visibility allows potential eavesdroppers to infer private information in the Internet of Things (IoT) environment. For example, it allows for the identification of sleep monitors and the inference of whether a user is awake or asleep.

WiFi eavesdropping theoretically enables the identification of IoT devices without the need to join the victim's network. This attack scenario is more realistic and much harder to defend against, thus posing a real threat to user privacy. However, …

Novel Phase Shifters Using Reconfigurable Filters, Georgiy Brussenskiy

Graduate Thesis and Dissertation 2023-2024

Phase shifters play a crucial role in radar, satellite communications, and 5G networks. Recently, the idea of using filters as phase shifters have attracted much interest due to providing many benefits such as smaller area, lower noise figure, easier fabrication method as compared with other technologies, reduced cost, and the ability to work as multi-functioning device. This work focuses on the implementation of bandstop-based and bandpass-based filtering phase shifters. For the bandstop-based approach, some of the resonating structures that were examined are stubs, LC tanks, L-shaped/U-shaped half wavelength resonators and many others. Periodic stub loading filter design method was compared …

Enhancing Scanning Tunneling Microscopy With Automation And Machine Learning, Darian Smalley

Graduate Thesis and Dissertation 2023-2024

The scanning tunneling microscope (STM) is one of the most advanced surface science tools capable of atomic resolution imaging and atomic manipulation. Unfortunately, STM has many time-consuming bottlenecks, like probe conditioning, tip instability, and noise artificing, which causes the technique to have low experimental throughput. This dissertation describes my efforts to address these challenges through automation and machine learning. It consists of two main sections each describing four projects for a total of eight studies.

The first section details two studies on nanoscale sample fabrication and two studies on STM tip preparation. The first two studies describe the fabrication of …

Response Characterization And Prediction Of Uhpc Flat Plates Subjected To Perpendicular Axisymmetric Concentrated Loads, Furkan Cakmak

Wayne State University Dissertations

A methodology is presented that accurately and consistently predicts the complete moment-curvature (M-χ) response of UHPC cross-sections. Furthermore, a computational framework is presented to characterize the response of UHPC flat plates subjected to perpendicular axisymmetric concentrated loads. The presented framework is concerned with the prediction of the complete flexural response and punching shear capacity of UHPC flat plates thus addressing two fundamental limit states related to the design of UHPC flat plates. Guidance is provided for how to convert continuous flat plates supported by discrete columns into isolated plates supported by a single column in terms of plate dimensions and …