Engineering Commons^™

Identifying Sick Cells From High-Resolution Solid-State Micropore Data, Abdul Hafeez, Azhar Ilyas, Ali R. Butt, Samir M. Iqbal

Mechanical Engineering Faculty Publications and Presentations

Early detection of diseases such as cancer can drastically improve prognosis and treatment. To this end, solid-state micropores can measure distinct mechanical properties of diseased cells from their translocation behavior — detected as pulses in the temporal data stream of ionic current — and help diagnose diseases at early stages. However, the obstacle in such approaches is that the accuracy of the sensor is affected by noise, making the pulse detection task too subjective. This is inefficient especially when the disease-relevant data is only a fraction of the total acquired data. Thus, it is important to intelligently automate the detection …

Energy Efficiency In Additive Manufacturing: Condensed Review, Ismail Fidan, Vivekanand Naikwadi, Suhas Alkunte, Roshan Mishra, Khalid Tantawi

Engineering Technology Faculty Publications

Today, it is significant that the use of additive manufacturing (AM) has growing in almost every aspect of the daily life. A high number of sectors are adapting and implementing this revolutionary production technology in their domain to increase production volumes, reduce the cost of production, fabricate light weight and complex parts in a short period of time, and respond to the manufacturing needs of customers. It is clear that the AM technologies consume energy to complete the production tasks of each part. Therefore, it is imperative to know the impact of energy efficiency in order to economically and properly …

Advancements And Challenges In Additively Manufactured Functionally Graded Materials: A Comprehensive Review, Suhas Alkunte, Ismail Fidan, Vivekanand Naikwadi, Shamil Gudavasov, Mohammad Alshaikh Ali, Mushfig Mahmudov, Seymur Hasanov, Muralimohan Cheepu

Engineering Technology Faculty Publications

This paper thoroughly examines the advancements and challenges in the field of additively manufactured Functionally Graded Materials (FGMs). It delves into conceptual approaches for FGM design, various manufacturing techniques, and the materials employed in their fabrication using additive manufacturing (AM) technologies. This paper explores the applications of FGMs in diverse fields, including structural engineering, automotive, biomedical engineering, soft robotics, electronics, 4D printing, and metamaterials. Critical issues and challenges associated with FGMs are meticulously analyzed, addressing concerns related to production and performance. Moreover, this paper forecasts future trends in FGM development, highlighting potential impacts on diverse industries. The concluding section summarizes …

Exploring The Development Of Engineering Design Creativity And The Role Of Spatial Skills In This Process, Clodagh Reid, Sheryl Sorby

Research Papers

This study aims to investigate the development of creativity in engineering education and how spatial skills relate to creativity of design solutions.

Undergraduate students in the first (n=86) and fourth/fifth year (n=48) of their engineering programme were invited to participate. Students completed four spatial tests to precisely measure visualisation skills. In a separate session, students were invited back to solve two engineering design tasks: a ping pong problem where they designed a ping pong ball launcher game to meet specified criteria and a rain catcher problem where they were tasked with developing as many ideas for capturing rainwater as a …

Exploring The Intersection Of Biology And Design For Product Innovations, Ajay P. Malshe, Salil Bapat, Kamlakar Rajurkar, Ang Ang, Jean-Marc Linares

Department of Mechanical and Materials Engineering: Faculty Publications

Design, development, productization, and applications of advanced product concepts are pressing for higher multifunctionality, resilience, and maximization of available resources equitably to meet the growing and continuing demands of global customers. These demands have further accelerated during the recent COVID- 19 pandemic and are continuing to be a challenge. Engineering designs are one of the most effective ways to endow products with functions, resilience, and sustainability. Biology, through millions of years of evolution, has met these acute requirements under severe resource and environmental constraints. As the manufacturing of products is reaching the fundamental limits of raw materials, labor, and resource …

Stump Grinder Project, Wyatt Hopper

Honors Theses

This project covers the analysis of a Portable Stump Grinder device sponsored by private investors known as Gary and Carol Sherman, two farmers out of Lincoln, Nebraska. The ultimate goal of this project, in terms of the work we were assigned, was to provide the foundation work for future engineering teams to design and build the stump grinder for Gary and Carol Sherman.

Exploring The Relationship Between Designing And Composing With An Analog Synthesizer, Felix Morrissey

Honors College

For my electrical engineering capstone, I designed and built a handheld analog synthesizer. This analog synthesizer is a musical instrument which uses electrical analog components to generate sounds with properties based on the user’s input. My goal when creating this device was to maximize its utility while remaining within the scope of the capstone project. After the synthesizer was built, I wrote and recorded several pieces of music which each utilized the synthesizer prominently. The aim of this process was to be able to explore the relationship between an instrument’s design and the quality of the music produced utilizing it. …

Making Space: How The Engd Makerspace Promotes Inclusion And Belonging, And Its Success In Doing So, Noah Crow

WWU Honors College Senior Projects

This project is a comprehensive overview of efforts made in the ENGD Makerspace to strengthen community, make the space welcoming and inclusive to all students, and combat techno-centric norms and stereotypes that keep people from learning and participating in makerspaces. It includes research conducted on WWU students’ feelings and experiences in the Makerspace, which found that women and non-Engineering-and-Design-major students have lower self-reported feelings of belonging and being part of the Makerspace, and concludes with proposals on how to continue work facilitating an inclusive environment and increasing sense of belonging and participation for women, trans students, and non-majors.

Midwest Roadside Safety Facility Expansion For Enhanced Research Capabilities, Joseph (Lj) Hajduch, Isaac Hansen, Jeff Schroeder, Hozhin Sleman, Ben Wortman

Honors Theses

As Civil Engineering students, this group was tasked with designing and proposing an engineering solution to a real-world problem. In this case, the Midwest Roadside Safety Facility in Lincoln, Nebraska was looking for a planned proposal to add an additional building to their property for the purpose of additional research and office space. The group decided on the name Zana Engineering – Zana translating to “highly educated” in Kurmanji – to function as the organization responsible for creating this proposal and presentation. Zana Engineering designed this plan on several key factors, most significantly utility, affordability, safety, sustainability, functionality, longevity, and …

Can Designing For Mars Stimulate Our Thinking About Designing More Sustainably For Earth?, Lucy Berthoud, James Norman, Ella Good, Nicola Kent

Practice Papers

This work describes the use of an arts-based project to stimulate creative thinking about design and sustainability for engineering students of all disciplines and years. ‘Building a Martian House’ was a public art project where a house designed for Mars was built in the centre of the city of Bristol, UK. It was conceived by artists, designed by the public, architects and engineers and built by construction companies. In this work, a workshop for students was developed and run based on this art project. Its aim was to use the challenge of designing for Mars as a provocation to thinking …

Fostering A Sustainable Future Through Inclusive Design, Samara Omar, Kate Youmans, Aubrey Wigner, Henry Archer, Carrie Mcclelland

Practice Papers

Fostering a sustainable future requires a balance between human necessities, societal institutions, and environmental systems; and this delicate equilibrium is best attained through strategic and innovative design. With this, and the growing diversity of our communities, it is imperative to equip engineering students with inclusive perspectives that allow them to critically assess the socio-technical elements of sustainable design. Recent research within engineering education has elevated the importance of empathy as a design practice and inclusivity as a design principle; exploring topics of bias and exclusion are essential to this work. As part of a first-year design course, we introduced these …

Drawing From Sefi Ethics Knowledge To Support Eco-Ethics Education Within The European University Of Technology, Jye Benjamin O'Sullivan, Shannon Chance

Practice Papers

We are leading a project called Ethico within the European University of Technology (EUt). Ethico aims to design and promote the uptake of innovative, ecological ethics for technological education.

This practice paper briefly summarizes the aims and structure of the Ethico project, and then focuses on the work completed as part of the teacher training module developed in Cluj, 7-9th March, 2023. This workshop drew its conceptual framework from the short abstracts currently available for the Engineering Ethics Education Handbook. The structure developed was then implemented in a student facing workshop in Troyes between the 10-14th July 2023. The handbook …

Critical Consciousness And Engineering Design Teaching Framework, Renata Alejandra Revelo Alonso, Joel Alejandro Mejia, Luis Montero Moguel, Alex Stutts

Practice Papers

Sustainability in engineering design is not just about the processes and practices established or the materials used and sourced, it is also about the mindset that engineers bring to design to carry forth solutions that promote a sustainable world. In this practice paper, we review a teaching framework for an engineering course on design with a contextual perspective. To contextualize engineering design, we incorporate critical consciousness topics to discuss alongside each design process topic. For example, during the unit when we discuss design alternatives in the engineering design process, we also discuss implicit bias and how implicit bias may impact …

Comparing The Meaning Of ‘Thesis’ And ‘Final Year Project’ In Architecture And Engineering Education, Rahman Tafahomi, Shannon Chance

Articles

Architectural education shares much in common with engineering, including the use of a culminating capstone experience in the final year. The form of this experience varies, with the research-based thesis and final-year project being most common. This paper explores the literature on traditions of enquiry and the meaning of research in various fields and the evolution of the ‘thesis’ and ‘final year project’ approaches over time. It then briefly summarises empirical research conducted on a case study institution struggling to bridge gaps in understandings of these distinct forms of learning and teaching. Throughout, the paper presents a comprehensive set of …

Predicting Engineering Integration In K-12 From The Perspective Of Pre-Service Teachers, Pilar Pazos, Francisco Cima, Jennifer Kidd, Kristie Gutierrez, Dorothy Faulkner, Minjung Lee, Krishna Kaipa, Orlando Ayala

Engineering Management & Systems Engineering Faculty Publications

The integration of engineering content at the pre-college level is gaining global traction as a strategy to improve learning outcomes and to promote inclusion and diversity in STEM (Science, Technology, Engineering, and Mathematics). Preservice teacher (PST) programs have become natural insertion points for integration efforts by providing future K-12 teachers with the resources and preparation to teach engineering as part of their academic preparation. There is a need to understand the socio-cognitive mechanisms by which teacher preparation programs can help teachers to integrate engineering in their future classrooms. This work examines how an innovative cross-disciplinary program impacted important social-cognitive drivers …

Centering Meaning-Filled Design Within Engineering Education: Recommendations On How To Integrate Interdisciplinary Architectural Design Charrettes, Community Engagement, Sustainability Principles, And Adapted Agile Methodologies Into A Student-Centered, Project-Based Engineering Program, David D Gillette, Michael Haungs, Thomas Fowler

Practice Papers

The Liberal Arts and Engineering Studies program (LAES) is a hybrid engineering and humanities degree housed in both the engineering and liberal arts colleges. LAES requires the same required math and science courses of standard engineering degrees, adding upper-level concentrations split equally between advanced engineering and humanities courses.

LAES was designed for retaining and recruiting a diversity of students in engineering, and to address recent innovations in industrial practice, technology design, and community-centered education. Through fifteen years of trial and error, the LAES program has developed a set of meaning-filled design guidelines for project work, combining engineering and humanistic problem …

Cold-Formed Steel Strength Predictions For Combined Bending And Torsion, Yu Xia, Robert S. Glauz, Benjamin W. Schafer, Michael Seek, Hannah B. Blum

Engineering Technology Faculty Publications

Locally slender cross-section members, such as cold-formed steel Cee and Zee sections, are susceptible to significant twisting and high warping torsion stresses. Torsion considerations are complicated by whether it is derived as a first-order effect from loading or a second-order effect from instability. The current design for combined bending and torsion interaction has some limitations, including only considering the first yield in torsion and ignoring the cross-section slenderness in torsion. Previous work has derived a simple uniform equation to predict the bimoment capacity and two bimoment strength curves for local and distortional buckling under torsion only. This work is extended …

Low-Fidelity Design Optimization And Parameter Sensitivity Analysis Of Tilt-Rotor Evtol Electric Propulsion Systems, Tyler Critchfield, Andrew Ning

Faculty Publications

Urban air mobility requires a multidisciplinary approach to tackle the important chal- lenges facing the design of these aircraft. This work uses low-to-mid fidelity tools to model rotor aerodynamics, blade structures, vehicle aerodynamics, and electric propulsion for a tilt-rotor electric vertical takeoff and landing (eVTOL) aircraft. We use gradient-based design optimization and extensive parameter sensitivity analysis to explore the design space and complex tradeoffs of tilt-rotor distributed electric propulsion systems.

Strengthening Urban Resilience: Understanding The Interdependencies Of Outer Space And Strategic Planning For Sustainable Smart Environments, Ulpia-Elena Botezatu, Olga Bucovetchi, Adrian V. Gheorghe, Radu D. Stanciu

Engineering Management & Systems Engineering Faculty Publications

The conventional approach to urban planning has predominantly focused on horizontal dimensions, disregarding the potential risks originating from outer space. This paper aims to initiate a discourse on the vertical dimension of cities, which is influenced by outer space, as an essential element of strategic urban planning. Through an examination of a highly disruptive incident in outer space involving a collision between the Iridium 33 and Cosmos 2251 satellites, this article elucidates the intricate interdependencies between urban areas and outer space infrastructure and services. Leveraging the principles of critical infrastructure protection, which bridge the urban and outer space domains, and …

Parametric Modeling Of Biomimetic Sharkskin For Wire Edm For Drag Reduction And Hydrophobicity, Joel Maxwell

Department of Mechanical and Materials Engineering: Dissertations, Theses, and Student Research

This research sets out to demonstrate the viability of parametric modeling for biomimetic sharkskin in the effort to reduce drag and create a self-cleaning surface. Multiple designs were created to be machined by Wire EDM on stainless steel and titanium and were comparatively tested. Limitations of current manufacturing processes to economically produce naturally occurring structures such as sharkskin, emphasize the need to be able to calculate the most accurate design for a given manufacturing process. By designing a simplified but parametrically consistent model compared to an accurately depicted 3D model of sharkskin, the textured samples produced can be further tested …

A Review Of Current Construction Guidelines To Inform The Design Of Rammed Earth Houses In Seismically Active Zones, David Thompson, Charles Augarde, Juan Pablo Osorio

Articles

Sustainability in the materials we use for construction is a prime concern, focusing on reducing the embodied energy and carbon footprints of the materials used. The cement used in concrete products is responsible for a significant proportion of Man's CO2 emissions and its production requires substantial energy input, as do fired clay products. For this reason, products formed from unfired earthen materials are of increasing interest and the current challenges include devising means of robust design for strength and to address durability concerns. One form of earthen construction that employs an in-situ method is rammed earth, and it is a …

Ambient Temperature Phase Change Launcher, Johnny Molloy

Senior Honors Projects

JOHNNY MOLLOY (Mechanical Engineering) Ambient Temperature Phase Change Launcher Sponsor: Bahram Nassersharif (Mechanical Engineering)

Deployment of payloads stored in watertight cylindrical bodies in underwater environmental conditions are of interest to the marine and naval community. The proposed work will investigate the possibility of using inert carbon dioxide gas compressed into its liquid state and stored under pressure to launch payloads by means of expansion from a cylindrical tube. To suit the needs of the Naval Undersea Warfare Center (NUWC), this launching system must fire from up to 14 ft underwater, have two degrees of freedom, and the payload must not …

Watseka Pavilion, Jacob Esselstyn, Josh Hagan, Geovanni Martinez, Elijah Mendoza

Student Scholarship – Engineering

Students will design an open-air pavilion for the city park in Watseka.  The design will include architectural and structural design.  Substantial completion of design documents is required.

Law School News: National Housing Advocate Named To Lead Rwu's New Real Estate Initiatives 02/08/2022, Roger Williams University School Of Law

Life of the Law School (1993- )

No abstract provided.

Surface Acoustic Wave (Saw) Sensors: Physics, Materials, And Applications, Debdyuti Mandal, Sourav Banerjee

Faculty Publications

Surface acoustic waves (SAWs) are the guided waves that propagate along the top surface of a material with wave vectors orthogonal to the normal direction to the surface. Based on these waves, SAW sensors are conceptualized by employing piezoelectric crystals where the guided elastodynamic waves are generated through an electromechanical coupling. Electromechanical coupling in both active and passive modes is achieved by integrating interdigitated electrode transducers (IDT) with the piezoelectric crystals. Innovative meta-designs of the periodic IDTs define the functionality and application of SAW sensors. This review article presents the physics of guided surface acoustic waves and the piezoelectric materials …

Enhancing Serviceability And Resiliency Of Transportation Networks Based On Topological Credentials And Systematic Design Interventions, Md Ashraf Ahmed

FIU Electronic Theses and Dissertations

Recent advancements in network science showed that the topological credentials (i.e., rank of relative importance) of network components (such as nodes and links), carry significant implications as it is critical to know which components contribute the most to the overall network performance. For transportation networks, critical components (roads, bridges) may become inaccessible for adjacent traffic due to day-to-day congestion or external disruptions (i.e., man-made or natural hazards) that significantly reduce the level of service. Hence, topological credentials of critical network components based on their connectivity need to be assessed to enhance the serviceability, i.e., improved travel time experience as well …

Scope Process: Fostering Students' Design Outcome Effectiveness, Andrew J. Hughes, Cameron D. Denson

Educational Leadership & Technology Faculty Publications

The purpose of this article is to help Technology and Engineering Educators scaffold engineering design and problem-solving experiences so that students taking technology and engineering courses will develop an improved ability to design. Technology and Engineering Education seems to increasingly focus on problem-solving, design, and engineering. Technology and Engineering Education is not the only discipline with this focus. The fact that both Science and Technology and Engineering Education are similarly focused on the teaching and learning of engineering begs the question of what separates technology and engineering educators from science educators in the teaching of engineering? Lewis (2004) cautioned that …

Paint The City, Juan Estrella

Publications and Research

Paint the City lets you create, share, and discover street art in augmented reality. Imagine having a secret world hidden in your phone where you are free to express yourself and develop a community full of potential friends. CREATE Choose from a variety of colors and brush sizes to create your masterpiece, we give you the tools to be as detailed as possible!

SHARE When you are done you can publish your work which will be shown to people passing by. You can also share it with your friends and create your own private art gallery. All of your work …

Scaffolding Middle And High School Students’ Engineering Design Experiences: Quality Problem-Scopeing Promoting Successful Solutions, Andrew Hughes, Cameron Denson

Educational Leadership & Technology Faculty Publications

Highly proficient expert engineers begin the iterative process of design by thoroughly investigating the design problem. Engineering students are often distracted by surface details, leading to a faulty conception of the problem and inappropriate solution strategies. Adequate problem-scoping is arguably the most important step in the design process. To address this issue, the researchers developed an instructional framework to help teachers scaffold students’ cognitive and metacognitive processes during the problem-scoping phase of a design challenge. The purpose of this quasi-experimental study was to investigate the impact that scaffolded instruction related to the SCOPE process had on students’ solution success during …

Design And Perspective Of Amorphous Metal Nanoparticles From Laser Synthesis And Processing, Shun-Xing Liang, Lai-Chang Zhang, Sven Reichenberger, Stephan Barcikowski

Research outputs 2014 to 2021

Amorphous metal nanoparticles (A-NPs) have aroused great interest in their structural disordering nature and combined downsizing strategies (e.g. nanoscaling), both of which are beneficial for highly strengthened properties compared to their crystalline counterparts. Conventional synthesis strategies easily induce product contamination and/or size limitations, which largely narrow their applications. In recent years, laser ablation in liquid (LAL) and laser fragmentation in liquid (LFL) as "green"and scalable colloid synthesis methodologies have attracted extensive enthusiasm in the production of ultrapure crystalline NPs, while they also show promising potential for the production of A-NPs. Yet, the amorphization in such methods still lacks sufficient rules …