Engineering Commons^™

Reimagining Cherry Lane: A Road To Collaboration, Adam Keyster, Ben Anderson

Purdue Road School

Join us on a case study to learn how collaborative efforts between Purdue University and the City of West Lafayette created multimodal infrastructure through the realignment of Cherry Lane and supporting work. Presenters will discuss how this project is solving longstanding issues that the city and university have encountered over the years and how the community benefits from the implemented solution.

Demystifying Utility Coordination: Understanding The Basics, Josshe I. Palm

Purdue Road School

This session will explain utility coordination to non-utility coordinators. It will help educate others about the role and responsibilities of a utility coordinator, an OSA, easy UC and design mistakes to avoid, scope and design considerations, items commonly overlooked, when to coordinate SUE, and how to work with your UC to request a letting adjustment. We will also highlight UC submittals and allow time for questions about the UC’s role in a project’s success.

It Starts With You: Effective Team Building Strategies, Karen Wood, Jennifer L. Sharkey

Purdue Road School

This presentation will provide strategies to build effective teams. Transportation projects require effective collaboration, which is accomplished through team building and trust. To successfully manage and work in a team made up of diverse people with different perspectives and experiences, we must first look inward to build self-awareness and emotional intelligence. In doing so, we can connect with others by being our authentic selves and listening to understand.

The Role Of The Owner’S Representative In Public Projects, Tim Jensen, Scott Willis

Purdue Road School

This presentation will explain how an owner’s representative works with the municipality to deliver quality projects on behalf of the community.

Indianapolis White River Innovation District: Bot Success Story, Cassie Reiter, John Bowen, Shannon Killion

Purdue Road School

When Elanco announced their headquarters will be at the former GM stamping plant site in Indianapolis, Indy DPW, IEDC and their partners needed to not only design roadway infrastructure, but also all-new utility infrastructure and a new bridge across the White River. When the build-operate-transfer procurement process became available for use by Indianapolis, the design teams and owners embraced the opportunity for a collaborative construction process on this transformative project.

Applied Ergonomics, Yunfeng Chen, Jiansong Zhang

Purdue Road School

There are approximately 2.3 million work-related injuries and over 6,000 fatalities every year. In 2020, half of these injuries happened in the construction industry. Our research explored the three main causes of work-related injuries, identified high-risk activities and the root causes of injuries in those activities, evaluated current safety practices in INDOT, proposed ergonomically effective technologies, and conducted experiments to evaluate if those ergonomic interventions can improve workers’ health and safety. Join us for a discussion.

Engineering Without Borders Usa, Katherine Kreienkamp, Allen Boyd, Susan Harris

Purdue Road School

Join us for an informative presentation about the mission, sustainable design practices, needs, and opportunities of the EWB (engineers without borders). This 17,000-member organization addresses clean water, sanitation, and other core living needs of small, disadvantaged international communities. EWB conducts hundreds of global projects per year and offers significant volunteer opportunities for civil, environmental, and electrical engineers and mentoring opportunities for scores of EWB student chapters.

Us 33 Over Blue River: Abc’S With Steel, Brandon Arnold, Kurt Heidenreich, Stephanie Wagner

Purdue Road School

The US 33 over the Blue River Bridge Replacement project is the first INDOT project of its kind, and a great example of Accelerated Bridge Construction (ABC). The project used prefabricated steel beam modular super- structure units with prefabricated substructure units, approach slabs, terminal joints, and “steel-like” UHPC for the 8-inch closure pours. Correcting the substan- dard roadway superelevation added complexity to the design and detailing. Join us to learn more.

Tips For Successful Lpa Engineers & Supervisors, Michael M. Gavelek, Jennifer L. Sharkey

Purdue Road School

The session will present lessons learned, tips, tricks, and lifehacks for LPA staff. We’ll unpack common traffic requests, HMA inlay and construction, nuggets from a long-lost LPA manual, and a long-range asset management strategy. resources. We’ll share valuable resources throughout the presentation that will save you time and money and position you to successfully serve your LPA.

Spatiotemporal Reaction Dynamics Control In Two-Photon Polymerization For Enhancing Writing Characteristics, Aofei Mao, Sarah Fess, Nada Kraiem, P. Li, Zhipeng P. Wu, Qiuchi Zhu, Xi Huang, Peixun Fan, Bai Cui, Jean-Francois Silvain, Suxing Hu, Mitchell Anthamatten, Sean P. Regan, David Harding, Yongfeng Lu

Department of Electrical and Computer Engineering: Faculty Publications

Since 2001, 3D microfabrication based on two-photon polymerization (TPP) has drawn extensive attention and interest in biology, optics, photonics, material science, and high-energy physics. The in-volume fabrication capability due to the threshold behavior of two-photon absorption enables TPP higher flexibility compared with other nanofabrication techniques. However, as determined by the in-volume fabrication feature as well as various reaction dynamics, the writing characteristics of TPP, such as throughput, accuracy, surface quality, and fabrication capability, are still limited. Herein, a comprehensive study is performed on the spatiotemporal behavior of reaction dynamics during TPP fabrication, mainly focusing on spatiotemporal characteristics of radical diffusion, …

6d Single-Fluorogen Orientation-Localization Microscopy For Elucidating The Architecture Of Beta-Sheet Assemblies And Biomolecular Condensates, Tingting Wu, Weiyan Zhou, Jai S. Rudra, Rohit V. Pappu, Matthew D. Lew

Electrical & Systems Engineering Publications and Presentations

We develop six-dimensional single-molecule orientation-localization microscopy (SMOLM) to measure the 3D positions and 3D orientations simultaneously of single fluorophores. We show how careful optimization of phase and polarization modulation components can encode phase, polarization, and angular spectrum information from each fluorescence photon into a microscope’s dipole-spread function. We used the transient binding and blinking of Nile red (NR) to characterize the helical structure of fibrils formed by designed amphipathic peptides, KFE8^L and KFE8^D, and the pathological amyloid-beta peptide Aβ42. We also deployed merocyanine 540 to uncover the interfacial architectures of biomolecular condensates.

Single And Dual Cell Encapsulation Via Liquid Core Hydrogels Using Pico Injection, Jade Houston

USF Tampa Graduate Theses and Dissertations

In this project, a comprehensive microfluidic device, along with several interdependent subsystems, was designed and developed in SolidWorks, leveraging a combination of 3D resin printing with biocompatible resin and micromachining with polymethylmethacrylate (PMMA). The microfluidics chip integrated both passive and active components to facilitate its primary function: dual cell encapsulation via liquid core sodium alginate hydrogel droplets.

Integral to the microfluidics chip design were key features including a 5-convolution Archimedes spiral for particle sorting, a flow focusing junction for droplet generation, and a pico injector for injecting additional cells into passing droplets via the manipulation of an electric field.

An …

Development Of A Plant Growth And Health Monitoring System Using Imaging And Sensor Array Information For Cubesat Applications, Kat-Kim Phan

USF Tampa Graduate Theses and Dissertations

Space exploration has been a topic of interest in the scientific community, such as the planned missions to Mars. To accomplish this would require being able to provide astronauts with a steady supply of food beyond freeze-dried foods leading to the need to grow food in space. Although this is a topic still being investigated, the CubeSat platform opens the possibility of carrying out studies on plant growth under more strenuous space conditions unlike that in the International Space Station (ISS). Developing a plant-focused mission for a CubeSat, though, entails being able to develop a system to sustain plant life …

Comparison Of Conventional And Adaptive Acoustic Beamforming Algorithms Using A Tetrahedral Microphone Array In Noisy Environments, Megan Brittany Ewers

Dissertations and Theses

In situ acoustic measurements are often plagued by interfering sound sources that occur within the measurement environment. Both adaptive and conventional beamforming algorithms, when applied to the outputs of a microphone array arranged in a tetrahedral geometry, are able to capture sound sources in desired directions and reject sound from unwanted directions. Adaptive algorithms may be able to measure a desired sound source with greater spatial precision, but require more calculations and, therefore, computational power. A conventional frequency-domain phase-shift algorithm and a modified adaptive frequency-domain Minimum Variance Distortionless Response (MVDR) algorithm were applied to simulated and recorded signals from a …

03.11.2024 Orsp Connect, Liz Williamson

ORED Newsletter

PAPPG Updates, J. R. Love, William Magee Institute grant

Synthesis And Energetic Characterization Of Borane-Amines On High-Nitrogen Heterocycles, Randy Lin, Nicholas F. Scherschel, Matthias Zeller, Stephen G. Hamlin, Madison Snyder, Steven Son, P. Veeraraghavan Ramachandran, Davin G. Piercey

Purdue University Libraries Open Access Publishing Fund

Borane-amines have garnered attention over the last several decades in a variety of applications, ranging from hydrogen storage materials to hypergolic fuel systems. An investigation into the synthesis of borane-amines with high-nitrogen content heterocycles was undertaken in this work. Borane-amines were formed by the reaction of BH3·Me2S in tetrahydrofuran (THF) with the requisite nitrogen-containing heterocycle and isolated by placing the crude reaction mixture in hexanes to precipitate the product. X-ray crystallography, thermogravimetric analysis (TGA), high resolution mass spectroscopy (HRMS), 1H NMR, 13C NMR, and 11B NMR were utilized for product characterization, while impact and friction sensitivity testing were conducted to …

Comparing Task Graph Scheduling Algorithms: An Adversarial Approach, Jared Coleman, Bhaskar Krishnamachari

Computer Science Faculty Works

Scheduling a task graph representing an application over a heterogeneous network of computers is a fundamental problem in distributed computing. It is known to be not only NP-hard but also not polynomial-time approximable within a constant factor. As a result, many heuristic algorithms have been proposed over the past few decades. Yet it remains largely unclear how these algorithms compare to each other in terms of the quality of schedules they produce. We identify gaps in the traditional benchmarking approach to comparing task scheduling algorithms and propose a simulated annealing-based adversarial analysis approach called PISA to help address them. We …

Effect Of The Filler Morphology On The Crystallization Behavior And Dielectric Properties Of The Polyvinylidene Fluoride-Based Composite, Suzana Filipović, Nina Obradović, Cole Corlett, William G. Fahrenholtz, Martin Rosenschon, Ekkehard Füglein, Radovan Dojčilović, Dragana Tošić, Jovana Petrović, Antonije Đorđević, Branislav Vlahović, Vladimir B. Pavlović

Materials Science and Engineering Faculty Research & Creative Works

Ceramic/polymer composites can be chemically stable, mechanically strong, and flexible, which make them candidates for electric devices, such as pressure or temperature sensors, energy storage or harvesting devices, actuators, and so forth. Depending on the application, various electrical properties are of importance. Polymers usually have low dielectric permittivity, but increased dielectric permittivity can be achieved by the addition of the ceramic fillers with high dielectric constant. With the aim to enhance dielectric properties of the composite without loss of flexibility, 5 wt.% of BaTiO₃-Fe₂O₃ powder was added into a polyvinylidene fluoride matrix. The powder was …

Assessing The Performance Of Jatropha Curcas And Moringa Oleifera Conditioners Towards Improving Fecal Sludge Treatment For Agricultural Purpose, Doglas Benjamin1

Tanzania Journal of Engineering and Technology (TJET)

been proposed as alternative solutions to replace chemical conditioners for fecal sludge (FS) treatment. However, their effectiveness in treating FS for safe agricultural use has not been thoroughly evaluated. The aim of this study was to assess the suitability of FS treated with Moringa oleifera and Jatropha Curcas conditioners for agricultural use. Physicochemical parameters Indexes, salinity and sodium hazard levels (Wilcox Diagram analysis), and removal efficiency of nutrients and pathogens were evaluated. Qualitative experiments were conducted using dewatering treatment chambers containing untreated control FS samples, FS treated with Moringa oleifera and Jatropha Curcas conditioners at the University of Dar es …

Difficulties Of Hydrofracturing In Sandstone – Experimental Study, S Vikram, Dheeraj Kumar, Ds Subrahmanyam

Journal of Sustainable Mining

Hydrofracturing in sandstone is not an easy task. Sandstone is porous; fluid dissipation is common hence unable to obtain breakdown pressures in certain flow rates (0.0000005–0.0001 m3/s). The higher flow rate (0.00025 m3/s) is ascertained to determine the fracturing pressures. Due to this, fracture propagation and delineation are observed [1]. To enhance, an experimental method is adopted by carrying out 6 Hydrofracturing tests in a borehole comprising sandstone. A high flow rate of 0.00025 m3/s and viscosity 0.001 Pascal second is applied. Later, the fracture simulation was run on 12 core samples collected from the same depths in a lab. …

Q-Rung Neutrosophic Sets And Topological Spaces, Michael Gr. Voskoglou, Florentin Smarandache, Mona Mohamed

Neutrosophic Systems with Applications

The concept of the q-rung orthopair neutrosophic set is introduced in this paper, and fundamental properties of it are studied. Also, the ordinary notion of topological space is extended to the q-rung orthopair neutrosophic environment, as well as the fundamental concepts of convergence, continuity, compactness, and Hausdorff topological space. All these generalizations are illustrated by suitable examples.

Q-Rung Neutrosophic Sets And Topological Spaces, Michael Gr. Voskoglou, Florentin Smarandache, Mona Mohamed

Neutrosophic Systems with Applications

The concept of the q-rung orthopair neutrosophic set is introduced in this paper, and fundamental properties of it are studied. Also, the ordinary notion of topological space is extended to the q-rung orthopair neutrosophic environment, as well as the fundamental concepts of convergence, continuity, compactness, and Hausdorff topological space. All these generalizations are illustrated by suitable examples.

Effect Of Initial Crack Length, Cross-Head Speed, And Quenching On The Fracture Toughness Of Hdpe With And Without Uv Stabilizers, A. Koriem, R. Singer, A. M. Ollick, M. Elhadary

Mansoura Engineering Journal

In materials science and engineering, understanding the fracture toughness of polymers is essential for ensuring the reliability and safety of various applications. This paper delves into the properties of high-density polyethylene (HDPE), a widely utilized polymer known for its versatility and durability. Fracture toughness, denoting a material's resistance to crack propagation, serves as a critical parameter in assessing the structural integrity of HDPE. The investigation focuses on unraveling the intricate interplay of factors influencing fracture toughness, with particular emphasis on crosshead speed, initial crack length, and the transformative effects of quenching. By exploring the relationships between these variables, our study …

Highly Efficient Dopamine Sensing With A Carbon Nanotube-Encapsulated Metal Chalcogenide Nanostructure, Harish Singh, Jiandong Wu, Kurt A.L. Lagemann, Manashi Nath

Chemical and Biochemical Engineering Faculty Research & Creative Works

Carbon nanotube-encapsulated nickel selenide composite nanostructures were used as nonenzymatic electrochemical sensors for dopamine detection. These composite nanostructures were synthesized through a simple, one-step, and environmentally friendly chemical vapor deposition method, wherein the CNTs were formed in situ from pyrolysis of a carbon-rich metallo-organic precursor. The composition and morphology of these hybrid NiSe2-filled carbon nanostructures were confirmed by powder X-ray diffraction, Raman, X-ray photoelectron spectroscopy, and high-resolution transmission electron microscopy images. Electrochemical tests demonstrated that the as-synthesized hybrid nanostructures exhibited outstanding electrocatalytic performance toward dopamine oxidation, with a high sensitivity of 19.62 μA μM-1 cm-2, low detection limit, broad linear …

Challenges And Opportunities In Electrification Of Adsorptive Separation Processes, Abdullah Al Moinee, Ali A. Rownaghi, Fateme Rezaei

Chemical and Biochemical Engineering Faculty Research & Creative Works

A global energy transition from fossil-based to renewable-based systems requires advancements in various energy sectors. Current chemical separation processes are quite energy-intensive and require significant advancement to make this transition happen. In the energy transition era, reducing the dependency of separation processes on fossil-based thermal energy seems inevitable for transitioning smoothly and meeting the stringent timelines. In particular, adsorption-based separation processes have the potential to be fully electrified through innovative strategies in developing stimuli-responsive adsorbents and swing processes. In this review, we discuss the recent efforts in electrification of adsorption processes and provide an overview of emerging materials and processes. …

Feature Engineering And Supervised Machine Learning To Forecast Biogas Production During Municipal Anaerobic Co-Digestion, Hunter W. Schroer, Craig L. Just

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Municipalities with excess anaerobic digestion capacity accept offsite wastes for co-digestion to meet sustainability goals and create more biogas. Despite the benefits inherent to co-digestion, the temporal and compositional heterogeneity of external waste streams creates operational challenges that lead to upsets or conservative co-digestion. Given the complex microbial bioprocesses occurring during anaerobic digestion, prediction and modeling of the outcomes can be challenging, and machine learning has the potential to improve understanding and control of co-digestion processes. Biogas flows are a surrogate for process health, and here, we predicted biogas production from historical data collected by a water resource recovery facility …

After A Wildfire: Water Safety Considerations For Agriculture Water Systems, Andrew J. Whelton, P. Coelho

Resilience to Emergencies and Disasters

No abstract provided.

Development Of Quantitative Structure Activity Relationships (Qsars) For Predicting The Aggregation Of Tio2 Nanoparticles Under Favorable Conditions, Jaewoong Lee

Department of Civil and Environmental Engineering: Faculty Publications

This study developed multi-linear regression (MLR) quantitative structure-activity relationships (QSARs) to predict n-TiO₂ aggregation in the presence of high concentrations of representative emerging organic contaminants (EOCs), which presented favorable conditions to interaction with n-TiO₂. The largest diameter change (Δ 517 nm at 0 h and Δ 1164 nm at 12 h) of n-TiO₂ was observed by estrone, while the smallest diameter change (Δ -114 nm at 0 h and – 4 nm at 12 h) was observed by lincomycin during experimental periods. In addition, the zeta potential changes of n-TiO₂ were …

Identifying Highly Responsive Locations For Spinal Motion Tracking Sensors, Tyler Hutchinson

Undergraduate Honors Theses

Tracking spinal motion in the lower back serves as a useful tool for aiding diagnostics. This study seeks to determine if a fabric garment with integrated strain sensors may provide sufficient information to identify key spinal motion characteristics typically manifested in skin strain. Sensors adhered directly to an individual’s skin would be the most effective means of capturing such characteristics. However, adhering sensors to skin of the lower back is difficult for frequent or everyday application. This research aims to integrate a sensor system into a more comfortable and readily user-applied device. Here we examine the implementation of such a …

A Deep Learning Convolutional Neural Network For Antenna Near-Field Prediction And Surrogate Modeling, Md Rayhan Khan, Constantinos L. Zekios, Shubhendu Bhardwaj, Stavros V. Georgakopoulos

Department of Electrical and Computer Engineering: Faculty Publications

This study investigates the use of deep learning techniques for building a generalized surrogate model that can accurately and very efficiently predict antenna performance parameters. Notably, we focus on applications where a substantial amount of simulation time is required and prior data is available for deep learning use. Specifically, for these applications, we introduce deep learning models that efficiently and reliably model the near-field of the antenna. These models, in turn, accurately predict far-field properties and essential antenna metrics, such as the reflection coefficient. To demonstrate the efficiency of our method, the widely used rectangular patch antenna is considered, encompassing …