Engineering Commons^™

An Experimental Study On Static And Dynamic Strain Sensitivity Of Embeddable Smart Concrete Sensors Doped With Carbon Nanotubes For Shm Of Large Structures, Andrea Meoni, Antonella D'Alessandro, Austin Downey, Enrique García-Macías, Marco Rallini, A. Luigi Materazzi, Luigi Torre, Simon Laflamme, Rafael Castro-Triguero, Filippo Ubertini

Faculty Publications

The availability of new self-sensing cement-based strain sensors allows the development of dense sensor networks for Structural Health Monitoring (SHM) of reinforced concrete structures. These sensors are fabricated by doping cement-matrix mterials with conductive fillers, such as Multi Walled Carbon Nanotubes (MWCNTs), and can be embedded into structural elements made of reinforced concrete prior to casting. The strain sensing principle is based on the multifunctional composites outputting a measurable change in their electrical properties when subjected to a deformation. Previous work by the authors was devoted to material fabrication, modeling and applications in SHM. In this paper, we investigate the …

Classical Molecular Dynamics Study For Defect Sink Behavior In Oxide Dispersed Strengthened Alloys, M. Mustafa Azeem, Zhongyu Li, Qingyu Wang, Qazi Muhammad Nouman Amjad, Muhammad Zubair, O. M.H. Ahmed

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Oxide Dispersed Strengthened (ODS) alloys are considered as a potential candidate for future generation reactors and can even be graded as better radiation resistant materials than the ones already in use. Molecular dynamics (MD) simulation study for defect sinks properties of ODS alloys have been investigated at 700K using LAMMPS (Atomic/Molecular massively parallel simulator software. SRIM (stopping range of ions in matter) code was used to see the approximate range of the ions and damage cascade profile. It has been observed that the oxide particle attracts vacancies/interstitials produced in the base matrix near the interface. The modeled structure looked amorphous …

Instituting Process Control Mechanisms In A Quality Control Analytical Chemistry Laboratory, Mercy Okezue, Kari Lynn Clase, Stephen Byrn

BIRS Symposium

Statistical Process Control by means of using control charts was a means of monitoring performance of analytical equipment. Quality control checks on test items using these equipment generated data used for plotting X-bar charts. The charts generated had warning and control limits which helped monitor system performance

Study Of Abnormal Grain Growth In Beta Annealed Ti-6al-4v Forgings, Lee R. Morris

Theses and Dissertations

Beta annealed Ti-6Al-4V has been used extensively in current aerospace platforms due to properties such as high strength to weight ratio. Recent inspections during aircraft production have revealed regions of excessive grain sizes, resulting in quarantined parts and excessive time spent on root cause analysis and risk mitigation efforts. Uncertainty surrounding these parts has led to increased costs and may cause future aircraft production delays. Part manufacturers have intermittently reported problems with abnormal grain growth in these alloys for years, but to date no supplier has been able to determine the source of this microstructural phenomenon. Leveraging common Finite Element …

Analysis Of Additively Manufactured Injectors For Rotating Detonation Engines, Michael C. Waters

Theses and Dissertations

This research represents an experimental and computational analysis of additively manufactured injectors for Rotating Detonation Engines (RDEs) for use in rocket propulsion. This research was based on the manufacture and testing of existing injector element designs using additive techniques. The designs were modeled from geometries gathered from Sutton and Biblarz Elements of Rocket Propulsion [23]. The goal of this research was to characterize the viscous losses of each design based on the discharge coefficient. The designs were computationally simulated to gain insight to the flow characteristics using multiple sets of conditions for surface roughness and inlet pressure. The results were …

Mechanical Engineering News, Georgia Southern University

Mechanical Engineering: News & Publications (2013-2023)

• 2018 Student Research Symposium

The Journal Of Undergraduate Research: 2017

The Journal of Undergraduate Research

This is the complete issue of the South Dakota State University Journal of Undergraduate Research, Volume 15.

New Flow Assurance System With High Speed Subsea Fiber Optic Monitoring Of Pressure And Temperature, John Hedengren, David Brower, J. Conrad Wilson, Geoff High, Karl Witherow

Faculty Publications

Subsea production control systems are instrumented to constantly monitor flowline pressure and temperature at key locations to prevent plugging and introduce mitigating control strategies. New fiber optic sensors with ruggedized construction and non-electrical components are subjected to accelerated aging tests and deployed in several installations with long service life. An overview of current progress with fiber optic technology is provided for fatigue monitoring, temperature, pressure, and strain sensing. Recent developments include improved service life, novel bonding methods, pipeline sensor station improvements, sensor calibration, and long-term fatigue analysis.

The latest advancements are validated on multiple installations on a subsea tieback in …

Helipad Design And Best Practices, Andrew Swanson

Purdue Road School

Heated Permeable Concrete Helipads for Safety and Surety - The latest in helipad construction technologies has combined with aeronautical consultant-guided design to create helipads that are safe and environmentally friendly and that meet the guidelines of the FAA, state, local agencies, and first responders. Join us to learn about heated permeable concrete helipads, which offer safety to flight crew, patient, and helicopter by eliminating ice and snow on the pad and pathways.

Rehabilitation Of Central Avenue Historic Stone Arch, Katlyn Shergalis

Purdue Road School

Indianapolis’s Central Avenue Historic Arch over Fall Creek was in immediate need of rehabilitation. Due to the historic nature of the structure, coordination was required with all of the state agencies to resolve issues and conflicts while maintaining the original integrity. We will share lessons learned as they relate to the complexity of the design with regard to the historic arch, the mapping of stones, and the plan details required to identify all features.

Driving The Future: Mobility In The 21st Century, Ted Hamer

Purdue Road School

As part of its future-focused infrastructure planning, INDOT is embarking on a project with Purdue University to understand how the development of transportation infrastructure can be linked to benefits to business supply chains, thus enabling decisions to nurture an ecosystem around connected and autonomous vehicles (CAVs). KPMG will provide insight into the CAV industry.

Incorporating Ada And Aps Work On Traffic Contracts: Design Guidance And Construction Standards, Joseph Bruno

Purdue Road School

The presentation provides an overview of the Indiana Department of Transportation's design guidance and construction standards on curb ramps and accessible pedestrian signals. The presentation also summarizes the Indiana Department of Transportation's policy on when existing curb ramps and pedestrian pushbuttons must be upgraded as part of a traffic construction contract and when an upgrade is optional.

When To Use Midwest Guardrail System (Mgs) W-Beam Guardrail, Katherine Smutzer

Purdue Road School

In this session we will discuss when MGS w-beam guardrail should be placed on state and local projects and review pertinent INDOT Design Memos released over the past year.

General Aviation Pilots' Strategies To Mitigate Bird Strikes, Flavio Coimbra Mendonca Mr, Thomas Q. Carney

Purdue Road School

To date, a few operational efforts have been launched by the FAA to mitigate wildlife strikes away from the airport jurisdiction, and those do not include actions by general aviation (GA) pilots. This presentation explores the safety training of GA pilots using aeronautical decision-making concepts as a strategy to mitigate the risk of mishaps due to birds. Previous research, the FAA Serial Report #22, and final reports of GA aircraft accidents due to birds will be covered.

Microwave-Assisted Synthesis Of Palladium Nanoparticles Supported On Copper Oxide In Aqueous Medium As An Efficient Catalyst For Suzuki Cross-Coupling Reaction, Hany A. Elazab, M. A. Sadek, Tamer T. El-Idreesy

Chemical Engineering

We report here a reliable green method for the synthesis of palladium nanoparticles supported on copper oxide as a highly active and efficient catalyst for Suzuki cross-coupling reaction. The experimental synthetic approach is based on microwave-assisted chemical reduction of an aqueous mixture of palladium and copper salt simultaneously using hydrazine hydrate as reducing agent. The catalyst was fully characterized using various techniques showing well-dispersed palladium nanoparticles. The catalytic activity and recyclability of the prepared catalyst were experimentally explored in the ligand-free Suzuki cross-coupling reaction with a diverse series of functionalized substrates. The synthesized Pd/CuO catalyst shows many advantages beside its …

College Of Engineering News, Georgia Southern University

College of Engineering & Computing: News & Publications (2010-2023)

• Student Research Symposium – April 19, 2018

Design Of Micro-Scale Energy Harvesting Systems For Low Power Applications Using Enhanced Power Management System, Majdi M. Ababneh

USF Tampa Graduate Theses and Dissertations

The great innovations of the last century have ushered continuous progress in many areas of technology, especially in the form of miniaturization of electronic circuits. This progress shows a trend towards consistent decreases in power requirements due to miniaturization. According to the ITRS and industry leaders, such as Intel, the challenge of managing and providing power efficiency still persist as scaling down of devices continues. A variety of power sources can be used in order to provide power to low power applications. Few of these sources have favorable characteristics and can be designed to deliver maximum power such as the …

Special Issue: Combined Scheduling And Control, John Hedengren, Logan Beal

Faculty Publications

This Special Issue (SI) of Processes, “Combined Scheduling and Control,” includes approaches to formulating combined objective functions, multi-scale approaches to integration, mixed discrete and continuous formulations, estimation of uncertain control and scheduling states, mixed integer and nonlinear programming advances, benchmark development, comparison of centralized and decentralized methods, and software that facilitates the creation of new applications and long-term sustainment of benefits. Contributions acknowledge strengths, weaknesses, and potential further advancements, along with a demonstration of improvement over current industrial best-practice.

Comparison Of Plume Dynamics For Laser Ablated Metals: Al And Ti, William A. Bauer, Glen P. Perram, Timothy J. Haugan

Faculty Publications

Emissive plumes from pulsed laser ablation of bulk Ti and Al from KrF laser irradiation at laser fluence up to 3.5 J/cm² and argon background pressures of 0–1 Torr have been observed using gated intensified charged-coupled device imagery. Mass loss for Ti increases from 0.1 to 0.8 μg/pulse as pulse energy increase from 174 to 282 mJ/pulse (35–170 photons/atom) and decreases by ∼30% as pressure increases from vacuum to 1 Torr. Early plume energies are described by the free expansion velocities of 1.57 ± 0.02 and of 1.81 ± 0.07 cm/μs for Ti and Al, respectively, …

Practical Overview Of Revised Section 918, Geosynthetics_Piccoli, Santino Piccoli

Purdue Road School

INDOT Standard Specifications Section 918, Geosynthetics, has been revised and updated, broadening the tools available to designers and contractors challenged with variable soil types and site conditions. The revision effort included harmonizing Section 200, 600, and 900 language relative to the design and use of geosynthetics. Section 918 broadly pertains to geosynthetics, which includes geotextiles, geogrids, geocells, geomembranes, and geocomposites. This session includes a practical discussion about specific changes to geotextile specifications and the addition of geotextile types.

Principles Of Writing Construction Specifications And Special Provisions, Scott Trammell, Melissa Russell

Purdue Road School

This presentation will help project managers and designers prepare the necessary information required for department and local public agency contracts with regard to the Standard Specifications and any necessary special provisions. Attendees will be provided examples of the proper way to present a Unique Special Provision, including things to avoid and questions to ask, in order to adhere to legal, moral, and ethical construction standards.

Implementing The Innovative On Tour Steam Art Integration Curriculum Program In A Georgia Title L School With Amazing Results!, Lisa Williams, Jamie Thompson, Emily Holton, Ronny Green, Rudo Tsemunhu, William Truby

National Youth Advocacy & Resilience Conference

How did a Title l school located in a designated rural Georgia school district implement a Pilot On Tour STEAM Art Integration Curriculum Program to promote a balanced curriculum for Title I students? Findings and leadership practices from this study will be shared and presenters will be available during and after the conference along with supporting handouts.

1857 - Preliminary Chart Of Monterey Bay, California.

Groundwater Basin Maps

An 1857 preliminary survey of the Monterey Bay (Monterey Quadrangle) providing sailing and anchorage information, as well as course and bearings, soundings, and tides.

2018 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 agency officials and employees responsible for Indiana’s local road infrastructure.

Using Nvivo™ For Literature Reviews: The Eight Step Pedagogy (N7+1), Maureen M. O'Neill Dr, Sarah R. Booth Mrs, Janeen Therese Lamb Phd

The Qualitative Report

While a literature review is a necessary milestone to be completed by all researchers in a timely and efficient manner, it is often one of the most difficult aspects of the research journey. Moreover, traditional approaches often leave novice researchers, to struggle with the conceptualisation of their literature review, now complicated by the overwhelming quantity of research available online. This paper presents a rationale the use of Qualitative Data Analysis Software (QDAS) programs for literature reviews. QDAS tools allow the researcher to explore large amounts of textual documents to see patterns. These programs are often overlooked by novice researchers due …

Policy-Preferred Paths In As-Level Internet Topology Graphs, Mehmet Engin Tozal

Theory & Applications of Graphs

Using Autonomous System (AS) level Internet topology maps to determine accurate AS-level paths is essential for network diagnostics, performance optimization, security enforcement, business policy management and topology-aware application development. One significant drawback that we have observed in many studies is simplifying the AS-level topology map of the Internet to an undirected graph, and then using the hop distance as a means to find the shortest paths between the ASes. A less significant drawback is restricting the shortest paths to only valley-free paths. Both approaches usually inflate the number of paths between ASes; introduce erroneous paths that do not conform to …

Engaging Biomedical Engineering In Health Disparities Challenges, Maribel Vazquez

Publications and Research

Health Disparities (HD) are community-based, biomedical challenges in need of innovative contributions from Science, Technology, Engineering and Math (STEM) fields. Surprisingly, STEM professionals demonstrate a persistent lack of HD awareness and/or engagement in both research and educational activities. This project introduced Health Disparities (HD) as technical challenges to incoming undergraduates in order to elevate engineering awareness of HD. The objective was to advance STEM-based, HD literacy and outreach to young cohorts of engineers. Engineering students were introduced to HD challenges in technical and societal contexts as part of Engineering 101 courses. Findings demonstrate that student comprehension of HD challenges increased …

Enucleated Cells Reveal Differential Roles Of The Nucleus In Cell Migration, Polarity, And Mechanotransduction, Gunes Uzer

Mechanical and Biomedical Engineering Faculty Publications and Presentations

The nucleus has long been postulated to play a critical physical role during cell polarization and migration, but that role has not been defined or rigorously tested. Here, we enucleated cells to test the physical necessity of the nucleus during cell polarization and directed migration. Using enucleated mammalian cells (cytoplasts), we found that polarity establishment and cell migration in one dimension (1D) and two dimensions (2D) occur without the nucleus. Cytoplasts directionally migrate toward soluble (chemotaxis) and surface-bound (haptotaxis) extracellular cues and migrate collectively in scratch-wound assays. Consistent with previous studies, migration in 3D environments was dependent on the nucleus. …

Improvement Of The Material's Mechanical Characteristics Using Intelligent Real Time Control Interfaces In Hfc Hardening Process, Florentin Smarandache, Luige Vladareanu, Mihaiela Iliescu, Victor Vladareanu, Alexandru Gal, Octavian Melinte, Adrian Margean

Branch Mathematics and Statistics Faculty and Staff Publications

The paper presents Intelligent Control (IC) Interfaces for real time control of mechatronic systems applied to Hardening Process Control (HPC) in order to improvement of the material's mechanical characteristics. Implementation of IC laws in the intelligent real time control interfaces depends on the particular circumstances of the models characteristics used and the exact definition of optimization problem. The results led to the development of the IC interfaces in real time through Particle Swarm Optimization (PSO) and neural networks (NN) using offline the regression methods.

College Of Engineering News, Georgia Southern University

College of Engineering & Computing: News & Publications (2010-2023)

• Dr. El Shahat honored by Egyptian government