Engineering Commons^™

Structural Health Monitoring Of Fiber-Reinforced Composite Using Wireless Magnetostrictive Sensors, Sujjatul Islam, Relebohile George Qhobosheane, Muthu Ram Prabhu Elenchezhian, Vamsee Vadlamudi, Rassel Raihan, Kenneth Reifsnider

Institute of Predictive Performance Methodologies (IPPM-UTARI)-Archive

Composite materials are extending the horizons of designers in all branches of engineering. These materials have numerous advantages and improved structural properties such as high strength to weight ratio, high stiffness to weight ratio, lightweight, structural strength, and excellent durability. This has led to their use in several applications i.e. automobile, aircraft, and military defense devices. However, these materials experience various types of deformations and damage modes during their service life that are at times challenging to detect. This has led to the development of various non-destructive methods for structural health monitoring (SHM) of the damages in these complex material …

A Review Of The Enhancement Of Bio-Hydrogen Generation By Chemicals Addition, Yong Sun, Jun He, Gang Yang, Guangzhi Sun, Valérie Sage

Research outputs 2014 to 2021

Bio-hydrogen production (BHP) produced from renewable bio-resources is an attractive route for green energy production, due to its compelling advantages of relative high efficiency, cost-effectiveness, and lower ecological impact. This study reviewed different BHP pathways, and the most important enzymes involved in these pathways, to identify technological gaps and effective approaches for process intensification in industrial applications. Among the various approaches reviewed in this study, a particular focus was set on the latest methods of chemicals/metal addition for improving hydrogen generation during dark fermentation (DF) processes; the up-to-date findings of different chemicals/metal addition methods have been quantitatively evaluated and thoroughly …

Information Technology News, Georgia Southern University

Information Technology: News & Publications (2012-2023)

• Geekend is April 26-27 in Savannah

Interaction-Aware Arrangement For Event-Based Social Networks, Feifei Kou, Zimu Zhou, Hao Cheg, Junping Du, Yexuan Shi, Pan Xu

Research Collection School Of Computing and Information Systems

No abstract provided.

Exploiting Wall Street: An Algorithmic Approach To Investing, Sterling Lemon

Student Research Symposium

Technology has advanced dramatically over the years, yet the old investment strategy of "buy and hold" has remained prevalent. While this strategy performed well historically, it serves as a stark contrast to modern investing which, by utilizing machine learning and advanced data analytics, is generating unprecedented returns This research project will demonstrate the strength behind algorithmic investing and how the investment strategy of "buy and hold" will become a thing of the past.

Propulsion Unit Optimization For Small Uas, Cory Goates

Student Research Symposium

Selection of a propulsion system for unmanned aerial vehicles (UAV) is a complex and iterative process. Attempts have been made to provide effective modelling of propulsion systems. However, due to the discrete nature of the design space, effective optimization tools have yet to be developed. We present an optimizer which presents designers with feasible propulsion systems based on given parameters. This optimizer also allows designers to view trend in the design space and more quickly determine an optimum solution.

Augmenting Anaerobic Digestion Of Microalgal Biomass, Anna Doloman

Student Research Symposium

Anaerobic digestion of microalgal biomass cannot be achieved without specialized hydrolytic microorganisms. Potentially algalytic bacteria belonging to Citrobacter and Alcaligenes species were isolated from a wastewater lagoon system. A combination of two potentially algalytic bacteria was successfully incorporated into the granular anaerobic consortia. A series of anaerobic cultures were prepared with different microbial combinations to test the methane production from algal biomass collected from a local wastewater treating trickling filter. The anaerobic microbial community mixed with two algalytic bacteria produced 10% more methane when compared to the methane produced by a native granular consortium. The presence of the algalytic bacteria …

Autonomous Watercraft Simulation And Programming, Nicholas J. Savino

Student Scholar Showcase

Automation of various modes of transportation is thought to make travel more safe and efficient. Over the past several decades, advances to semi-autonomous and autonomous vehicles have led to advanced autopilot systems on planes and boats, and an increasing popularity of self-driving cars. We predicted the motion of an autonomous vehicle using simulations in Python. The simulation models the motion of a small scale watercraft, which can then be built and programmed using an Arduino Microcontroller. We examined different control methods for a simulated rescue craft to reach a target. We also examined the effects of different factors, such as …

Robust Structured Group Local Sparse Tracker Using Convolutional Neural Network Features, Mohammadreza Javanmardi

Student Research Symposium

Sparse representation has recently been successfully applied in visual tracking. It utilizes a set of templates to represent target candidates and find the best one with the minimum reconstruction error as the tracking result. In this presentation, we propose a robust deep features-based structured group local sparse tracker, which exploits the convolutional neural network (CNN) features of local patches inside target candidates and represents them by a set of templates in the particle filter framework. To extract the local CNN features, we first set the size of each target candidate to 64 by 64 pixels to contain sufficient object-level information …

Mechanical And Tribological Behaviour Of Treated And Untreated Moringa Oleifera Pods Fiber Reinforced Epoxy Polymer Composite For Packaging Applications, Prakash Sampath, Senthil Kumar V.S Dr

Journal of Applied Packaging Research

Researchers now focus on the use of natural fiber polymer composites materials for packing applications. This attention is due to their low cost and renewable characteristics. Fabrication of composites with the use of renewable resources has many benefits of alternating from an appropriate management and reduction in industrial wastages, ecofriendly behaviour to cost effectiveness. The artificial fibers in packing industries can be replaced by natural fibers in the areas where stiffness and high strength are not the primary requirement. In the last decade the use of Natural fibers in the place of artificial fibers for reinforcements in epoxy resin matrix …

Development And Validation Of A Vibration-Based Sound Power Measurement Method, Cameron Bennion Jones

Theses and Dissertations

The International Organization for Standardization (ISO) provides no vibration-based sound power measurement standard that provides Precision (Grade 1) results. Current standards that provide Precision (Grade 1) results require known acoustic environments or complex setups. This thesis details the Vibration Based Radiation Mode (VBRM) method as one approach that could potentially be used to develop a Precision (Grade 1) standard. The VBRM method uses measured surface velocities of a structure and combines them with the radiation resistance matrix to calculate sound power. In this thesis the VBRM method is used to measure the sound power of a single-plate and multiple plate …

Formability Of A Hsas Based On Hot Processing Maps And Texture Analyses, Zhiqiang Yang, Ligang Liu, Tongguang Zhai, Chunmei Zhao, Hui Yu, Qiang Li

Chemical and Materials Engineering Faculty Publications

Aiming to improve the formability of a HSAS Docol 1500 Bor, hot processing maps were obtained based on Prasad, Babu and Murty instability criteria. The hot processing maps based on the above instability criteria are similar and the explanation of its similarity is given. Recrystallization and misorientation in typical quenched specimens were observed by using SEM with a EBSD system. It was found that the fraction values of HAGBs in quenched martensite are all below 0.4 under experimental conditions. Flow location bands occurs at lower deformation temperatures and higher strain rates. The textures in martensite mainly include ⟨110⟩ / / …

Probability Of Failure In Infrastructure Project Unbalanced Bidding, Yuhan Jiang, Yong Bai, Sisi Han, Ting Lin

Civil and Environmental Engineering Faculty Research and Publications

Design-Bid-Build infrastructure projects with Unit-Price Contracts have a high risk of quantity and price deviations. Those deviations might be the result of contractors' unbalanced bidding. At the same time, contractors' performance was unknown under unbalanced bidding situations. The researchers utilized the First Order Reliability Method and Statistical Analysis to evaluate contractors' bidding performances and engineers' estimating performances with bidding and settlement data of 163 NDDOT projects. Results showed that contractors adopted unbalanced bidding strategies as follows: if quantities were overestimated, then they underrated unit price; if quantities were underestimated, then they overrated unit price to maintain projects' Bid Total Amount …

The Influence Of Process Variables On Physical And Mechanical Properties In Laser Powder Bed Fusion, Joshua Robert Koepke, Bradley Jared, Yu-Lin Shen

Mechanical Engineering ETDs

Laser powder bed fusion additive manufacturing consists of a process that incorporates many process variables into fabricating parts. This study investigated several of these process variables and determined their influence on part properties. The process variables investigated include laser power, velocity, focus offsets, layer thickness, and powder particle size. Physical properties will be compared including surface roughness, form, and density. Tensile testing provided mechanical properties including unloading Young’s modulus, ultimate tensile strength, yield strength, uniform elongation, and ductility. Process maps will be developed that will provide recommendations for these process settings. It will be shown that these laser settings can …

Physical Constraints On Accuracy And Persistence During Breast Cancer Cell Chemotaxis, Julien Varennes, Hye-Ran Moon, Soutick Saha, Andrew Mugler, Bumsoo Han

Purdue University Libraries Open Access Publishing Fund

Directed cell motion in response to an external chemical gradient occurs in many biological phenomena such as wound healing, angiogenesis, and cancer metastasis. Chemotaxis is often characterized by the accuracy, persistence, and speed of cell motion, but whether any of these quantities is physically constrained by the others is poorly understood. Using a combination of theory, simulations, and 3D chemotaxis assays on single metastatic breast cancer cells, we investigate the links among these different aspects of chemotactic performance. In particular, we observe in both experiments and simulations that the chemotactic accuracy, but not the persistence or speed, increases with the …

College Of Engineering News, Georgia Southern University

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

• TekLAN 46 | Technology event for gaming and technology enthusiasts

Biomechanical Foot Guidance Linkage, Carl Nelson, Cale J. Stolle, Judith M. Burnfield

Department of Mechanical and Materials Engineering: Faculty Publications

A gait replication apparatus can include a scalable mechanical mechanism configured to replicate different gaits . The scalable mechanical mechanism can include , for example , a four - bar linkage , a pantograph , a cam / Scotch - yoke mechanism , and so forth . In some embodiments , the mechanical mechanism includes a beam rotating about an axis passing proximate to its center , with a foot pedal slidably coupled with the beam , and a timing chain / belt or cable pulley - pair coupled with the foot pedal and looped about the beam . A …

Save Our Sound Obx, Inc. V. North Carolina Department Of Transportation, Mitch L. Werbell V

Public Land & Resources Law Review

The Fourth Circuit Court of Appeals recently ruled in favor of several governmental agencies seeking to construct a new bridge in the Pamlico Sound adjacent to North Carolina’s Outer Banks. For years, state and federal agencies have put forth a massive coordinated effort to address the constant weather damage and erosion which occurs to a section of North Carolina Highway 12. The court found the agencies properly cleared NEPA’s environmental review requirements for the bridge’s construction. Additionally, the opponent-litigants’ efforts to add claims challenging the project, based on new information about a shipwreck in the bridge’s path, were futile.

Reduction Of Amine Emissions From An Aqueous Amine Carbon Dioxide Capture System Using Charged Colloidal Gas Aphrons, Xiaobing Li, Jesse G. Thompson, Kunlei Liu

Center for Applied Energy Research Faculty Patents

The present invention includes a system and process to reduce amine mist emissions (or MEA) from carbon capture systems using colloidal gas aphrons (CGA), and includes a method for separating and recovering an amine solvent (e.g., in the form of entrained droplets/mist and/or fine aerosol particles) from a carbon dioxide scrubbed flue gas stream exiting a carbon capture system (e.g., oil-fired power plants, coal-fired power plants, and/or natural gas combined cycle plants).

Challenges In Integrating Iot In Smart Home, Leiquan Pan, Chenyang Lu

All Computer Science and Engineering Research

Wireless devices have become a major part in Smart Home industry. Almost every smart home company has its own wireless solutions and cloud services. Normally, customers can only monitor and control smart devices through applications or platforms companies provided. It causes inconveniences and problems when we have lots of smart devices. In my master project, I did two projects to implement smart home IoT applications. From a single functionality IoT application to a more complicated smart home system, there are lots of challenges and problems appeared. This article will mainly focus on challenges in integrating IoT in a smart home.

X-Ray Determination Of Compressive Residual Stresses In Spring Steel Generated By High-Speed Water Quenching, Diego E. Lozano, George E. Totten, Yaneth Bedolla-Gil, Martha Guerrero-Mata, Marcel Carpio, Gabriela M. Martinez-Cazares

Mechanical and Materials Engineering Faculty Publications and Presentations

Automotive components manufacturers use the 5160 steel in leaf and coil springs. The industrial heat treatment process consists in austenitizing followed by the oil quenching and tempering process. Typically, compressive residual stresses are induced by shot peening on the surface of automotive springs to bestow compressive residual stresses that improve the fatigue resistance and increase the service life of the parts after heat treatment. In this work, a high-speed quenching was used to achieve compressive residual stresses on the surface of AISI/SAE 5160 steel samples by producing high thermal gradients and interrupting the cooling in order to generate a case-core …

Hydrothermal Synthesis Of Graphene Supported Pd/Fe3o4 Nanoparticles As Efficient Magnetic Catalysts For Suzuki Cross – Coupling, Hany A. Elazab Dr

Chemical Engineering

This research reports a reproducible, reliable, and efficient method for preparing palladium nanoparticles dispersed on a composite of Fe3O4 and graphene as an active catalyst with high efficiency for being used in Suzuki cross – coupling reactions. Graphene supported Pd/Fe3O4 nanoparticles (Pd/Fe3O4/G) exhibit a remarkable catalytic performance towards Suzuki coupling reactions. Moreover, the prepared catalyst recyclability was up to nine times without losing its high catalytic activity. The catalyst was prepared using hydrothermal synthesis; the prepared catalyst is magnetic in order to facilitate catalyst separation out of the reaction medium after reaction completion simply through using a strong magnet. This …

Electrically Conductive Concrete Mix For Electromagnetic (Em) Ground Plane, Christopher Tuan, Lim Nguyen

Department of Civil and Environmental Engineering: Faculty Publications

Conductive concrete mixtures are described that are configured to reflect, for instance, EM waves propagating from an EM pulser onto the conductive concrete mixture forming a ground plane, rather than absorb or dissipate the electromagnetic energy. The conductive concrete mixtures include cement, aggregate, water, metallic conductive material, and conductive carbon particles.

Comparative Study Of Ethanol Foamed Asphalt Binders And Mixtures Prepared Via Manual Injection And Laboratory Foaming Device, Mohd Rosli Mohd Hasan, Zhanping You

Michigan Tech Publications, Part 1

The consistency of the ethanol foamed binders and mixtures prepared using asphalt binders foamed by the manual injection technique and laboratory foaming device were evaluated and compared in this study. The asphalt binders foamed using both methods was prepared at 120 °C, 130 °C and 140 °C. The performance of ethanol-foamed binders was evaluated in terms of rotational viscosity, expansion ratio, and low temperature cracking. Meanwhile, the performance of foamed WMA mixtures was tested using semi-circular bending (SCB), disk-shaped compact tension (DCT), and tensile strength ratio (TSR) tests. In order to conduct the TSR test, the samples were conditioned using …

Information Technology News, Georgia Southern University

Information Technology: News & Publications (2012-2023)

• TekLAN 46 – April 12, 2019

Moisture Susceptibility Of Warm Mix Asphalt (Wma) With An Organic Wax Additive Based On X-Ray Computed Tomography (Ct) Technology, Jie Ji, Zhikai Yuan, Zhi Suo, Ying Xu, Pengfei Li, Zhanping You

Department of Civil, Environmental, and Geospatial Engineering Publications

The warm mix asphalt was fabricated with different moisture contents (0%, 1%, 2%, and 3%) of limestone aggregates using the Superpave gyratory compactor. The moisture susceptibility of asphalt mixtures with an organic wax additive RH was studied. The samples were compacted and tested using the modified Lottman test AASHTO T283, and the X-ray computed tomography technology was used to capture the internal structure images before and after the freeze-thaw cycles. The test results show that the air voids were distributed in the size range of 0–5 mm³ and 5–10 mm³. The number of air voids decreased with …

12th Annual Research Week--Event Proceedings, Office Of Research And Sponsored Projects Operations

Excellence Summit (Research Week) Archived Proceedings

12th Annual Research Week

"A Celebration of Student Research"

Faculty Promotions 2019 | College Of Engineering, Utah State University

College of Engineering News

The College of Engineering at Utah State University extends its congratulations to six newly-promoted faculty members. On April 5, these faculty members received official word from the USU Board of Trustees of their rank promotions:

A Strategic Audit Of Nintendo Co., Ltd., Emily Wagner

Honors Program: Senior Projects (Public)

The astounding success of the Nintendo Switch since its launch in March 2017 has brought Nintendo back into the spotlight of the gaming industry. However, what strategies led to the Switch’s success, enabling Nintendo to come back from the complete and utter failure of the Wii U? Also, what does Nintendo need to do to maintain its success over the lifetime of the Switch and beyond? This paper offers a strategic analysis of Nintendo, examining the company’s history, recent products, competitive advantages, and reasons for the success of the Switch. It also provides an analysis of Nintendo’s internal and external …

Airline Quality Rating 2019, Brent D. Bowen, Dean E. Headley

Airline Quality Rating Report

To contribute to AQR 2020, we encourage you to take the Airline Passenger Survey. Please CLICK HERE.

The results of the 29th annual national Airline Quality Rating (AQR). The most comprehensive study of the performance quality of the 9 largest airlines in the United States, the AQR is conducted by researchers at the W. Frank Barton School of Business at Wichita State University and Embry-Riddle Aeronautical University’s Prescott, Ariz., campus. Airline performance, as presented by AQR researchers, encompasses a multifactor look at the overall quality of the airlines. It includes on-time performance, denied boardings, mishandled baggage and customer complaints. …