Engineering Commons^™

Effects Of New And Recycle Flux On The Mechanical Properties Of Submerged Arc Welded (Saw) Line Pipe Grade X52m And X65m, Taib Meor Mohd Adli

Student Works (2020-2029)

Two line pipe grade X52M and X65M were manufactured using submerged arc welding process. For each grade, two different welding flux condition were simulated, i.e. 100% new flux and 100% recycle flux. The flux used was aluminate basic type trade name OP 132. The outside diameter and wall thickness for X52M was 610mm x 12.7mm and for X65M was 762mm x 14.3mm. Lower weld re-entrant angle and higher weld bead height were observed in recycle flux condition. Lower weld manganese content recorded in recycle flux condition. And lower mechanical tests (i.e. tensile, impact, and hardness) value reported for recycle flux …

Risk Assessment In Waste Sampling Activity For A Selected Food Industry, Razali Nurul Syazreen

Student Works (2020-2029)

Waste sampling is one of the main activities during environmental audit. This activity has been estimated as a non-risky activity and lead to inadequate risk assessment in the activity. The purpose of this study is to create a safer workplace for enforcement body in general and DOE officer in specific during waste sampling activity. Main objectives are to identify the hazards, further assess the hazards and determine the control measure to reduce the hazards. Observation and on-the-job training have been conducted to three food industry located in Shah Alam to identify the hazards. Structured surveys were conducted with 293 participants …

Power System Study For Oil And Gas Platform Connected To Onshore Grid, Taharim Rosshidi Hezrimi

Student Works (2020-2029)

Normally for oil and gas offshore platform, the electrical power supply is generated from the generator either using gas turbine generator, gas engine generator and diesel engine generator. The main power supply is backup by diesel engine generator in case emergency or during black start of the platform. As the design of oil and gas platform become complex, the size of generator keeps increasing. A new concept is being explored to mitigate this problem. Oil and gas company is looking to provide power generation from onshore and supplying the electrical power to a substation platform offshore and then distributed it …

Performance Analysis For Single-Stage And Multi-Stage Coreless Axial Flux Permanent Magnet Generator With Different Rotor Structures, Habib Asiful

Student Works (2020-2029)

Axial flux permanent magnet (AFPM) generator is a good candidate for both low and high-speed applications. Compared to radial flux machines, AFPM generators can be easily cascaded for enhanced power/torque while maintaining a fixed machine diameter. To improve power density and reduce cogging torque, some researchers have proposed the removal of iron core in the stator of AFPM machine, giving rise to the concept of coreless AFPM machine. Nevertheless, most of these coreless machines still require back iron on the rotor and/stator to reduce leakage flux. In this project, different rotor structures for single-stage coreless AFPM generators were considered, using …

Optimal Control Of A Rumor Propagation Model With Different Propagation Degrees In Social Network, Yingfeng Tang

Student Works (2020-2029)

Rumor is a social interaction of information, and its development is of great significance to human beings. In this paper, by studying the D K model and a rumor model spreading with rumor latent period, deduces the rumor model with differe nt propagation degrees of the spreaders. The two equilibrium points in the system are found through derivation. In real life, enterprises often ignore the reasonable planning of the cost of rumor control. By means of public education and media technology u sing by the authorities to debunk rumors, an optimal control problem i s established. The Pontryagin’s maximum principle …

Catalytic Esterification Of Palm-Based Lauric Acid Diethylene Glycol Via Microwave Heating, Abas Noor Azeerah

Student Works (2020-2029)

Diethylene glycol esters of fatty acids are mixtures of diethylene glycol mono- and di-esters of saturated and unsaturated fatty acids derived from edible oils and fats. The products are produced either by direct esterification of diethylene glycol with fatty acids or by transesterification of diethylene glycol with oils or fats. This study involved in maximizing the conversion of lauric acid to glycol ester via esterification with diethylene glycol, aided by calcined Zn-Mg-Al catalyst in a 250-ml reactor using both conventional and microwave heating. Preliminary catalytic screening involving tin (II) oxalate, Amberlyst-15 and calcined Zn-Mg-Al catalysts in esterification of lauric acid …

An Autoencoder And Artificial Neural Network-Based Method To Estimate Parity Status Of Wild Mosquitoes From Near-Infrared Spectra, Masabho Peter Milali, Samson S. Kiware, Nicodem J. Govella, Fredros Okumu, Naveen K. Bansal, Serdar Bozdag, Jacques D. Charlwood, Marta F. Maia, Sheila B. Ogoma, Floyd E. Dowell, George Corliss, Maggy T. Sikulu-Lord, Richard J. Povinelli

Electrical and Computer Engineering Faculty Research and Publications

After mating, female mosquitoes need animal blood to develop their eggs. In the process of acquiring blood, they may acquire pathogens, which may cause different diseases in humans such as malaria, zika, dengue, and chikungunya. Therefore, knowing the parity status of mosquitoes is useful in control and evaluation of infectious diseases transmitted by mosquitoes, where parous mosquitoes are assumed to be potentially infectious. Ovary dissections, which are currently used to determine the parity status of mosquitoes, are very tedious and limited to few experts. An alternative to ovary dissections is near-infrared spectroscopy (NIRS), which can estimate the age in days …

Structuring Student Success: Incorporating A Genre-Based Pedagogical Method To Improve A Strength Of Materials Laboratory Manual, Eleazar Marquez, Samuel Garcia

Mechanical Engineering Faculty Publications

In this research study the authors incorporated a pedagogical technique to improve a strength of materials lab manual. The conceptualization and subsequent development of a student friendly lab manual resource emerged from students’ difficulty in understanding the following areas: introduction to experiment, procedures, calculations, and relevancy to class content. Based on a survey conducted before lab manual improvements and modifications, mechanical engineering students expressed high dissatisfaction with the written structure of the manual and felt they spent too much time understanding lab procedures, deciphering what equations to utilize to complete their analyzes, and completing the report. As such, the authors …

Finding Balance: Examining The Impact Of Grades On Engineering Students' Well-Being, Eleazar Marquez, Samuel Garcia

Mechanical Engineering Faculty Publications

The authors conducted a preliminary research study to understand the emotional and academic impact grades have on engineering undergraduate students. Grades in higher education have become a priority for students to secure internship opportunities, post-graduation employment, and graduate school acceptance. However, students’ desire to attain high grades in engineering disciplines may lead to negative effects such as additional anxiety and increased mental exertion, physical exhaustion, and overall lack of work-life balance. A survey was conducted with a cohort of 45 students to understand their perspective on grades before, during, and at the end of the semester, and their responses to …

Flux-Switching Permanent Magnet Machines: A Review Of Opportunities And Challenges—Part I: Fundamentals And Topologies, Hao Chen, Ayman M. El-Refaie, Nabeel A. O. Demerdash

Electrical and Computer Engineering Faculty Research and Publications

Flux-switching permanent magnet (FSPM) machines have been gaining interest over the last few decades. This is due to the several advantages that this type of machines provides. These advantages include high torque density due to the flux-focusing effects, favorable thermal management due to the location of PMs on the stator, passive and hence robust rotor structure which is suitable for high-speed applications, etc. The two-part companion articles are going to provide a comprehensive analysis of FSPM machines in terms of opportunities and challenges. In the first part of these two-part series, it covers the principle theory, computation methods, various topologies …

Thermal Performance Of Hybrid-Inspired Coolant For Radiator Application, F. Benedict, Amit Kumar, K. Kadirgama, Hussein A. Mohammed, D. Ramasamy, M. Samykano, R. Saidur

Research outputs 2014 to 2021

© 2020 by the authors. Licensee MDPI, Basel, Switzerland. Due to the increasing demand in industrial application, nanofluids have attracted the considerable attention of researchers in recent decades. The addition of nanocellulose (CNC) with water (W) and ethylene glycol (EG) to a coolant for a radiator application exhibits beneficial properties to improve the efficiency of the radiator. The focus of the present work was to investigate the performance of mono or hybrid metal oxide such as Al2O3 and TiO2 with or without plant base-extracted CNC with varying concentrations as a better heat transfer nanofluid in comparison to distilled water as …

Quantitative Prediction Of Fractures In Shale Using The Lithology Combination Index, Zhengchen Zhang, Pingping Li, Yujie Yuan, Kouqi Liu, Jingyu Hao, Huayao Zou

Research outputs 2014 to 2021

© 2020 by the authors. Licensee MDPI, Basel, Switzerland. Fractures, which are related to tectonic activity and lithology, have a significant impact on the storage and production of oil and gas in shales. To analyze the impact of lithological factors on fracture development in shales, we selected the shale formation from the Da’anzhai member of the lower Jurassic shales in a weak tectonic deformation zone in the Sichuan Basin. We defined a lithology combination index (LCI), that is, an attribute quantity value of some length artificially defined by exploring the lithology combination. LCI contains information on shale content at a …

An Experimental Study On Micro-Structural And Geotechnical Characteristics Of Expansive Clay Mixed With Eps Granules, Nitin Tiwari, Neelima Satyam, Sanjay Kumar Shukla

Research outputs 2014 to 2021

© 2020 Pavement structures constructed on the expansive soil subgrade experience a higher upward pressure compared to any other subgrade material. The upward pressure is caused due to high swelling and shrinkage characteristics of expansive clay soil. The present study has investigated and identified the mechanisms by which a remolded expansive soil can be modified to reduce the upward pressure and swelling (heave). To achieve this, a lightweight, environmentally friendly, and high pressure resistive expanded polystyrene (EPS) granules have been used with expansive soil s from three different locations of Madhya Pradesh state, India. The study has been performed to …

Remedying Sound Source Separation Via Azimuth Discrimination And Re-Synthesis, Ruairí De Fréin

Conference papers

Commercially recorded music since the 1950s has been mixed down from many input sound sources to a two- channel reproduction of these sources. The effect of this approach is to assign sources to locations in a stereo field using a pan- position for each source. The Adress algorithm is a popular way of extracting individual music sound sources from a stereo mixture. A drawback of the Adress algorithm is that when time- frequency components in the stereo mixture are shared between two or more sources, calculating the inter-aural intensity scaling parameter for each source for that time-frequency component is challenging. …

Prediction Of Flotation Efficiency Of Metal Sulfides Using An Original Hybrid Machine Learning Model, Rachel Cook, Keitumetse Cathrine Monyake, Muhammad Badar Hayat, Aditya Kumar, Lana Alagha

Materials Science and Engineering Faculty Research & Creative Works

Froth flotation process is extensively used for selective separation of base metal sulfides from uneconomic mineral resources. Reliable prediction of process outcomes (metal recovery and grade) is vital to ensure peak performance. This work employs an innovative hybrid machine learning (ML) model—constructed by combining the random forest model and the firefly algorithm—to predict froth flotation efficiency of galena and chalcopyrite in relation to various experimental process parameters. The hybrid model's prediction performance was rigorously evaluated and compared against four different standalone ML models. The outcomes of this study illustrate that the hybrid ML model has the prediction ability to process …

Impulse And Performance Measurements Of Electric Solid Propellant In A Laboratory Electrothermal Ablation-Fed Pulsed Plasma Thruster, Matthew S. Glascock, Joshua L. Rovey, Kurt A. Polzin

Mechanical and Aerospace Engineering Faculty Research & Creative Works

Electric solid propellants are advanced solid chemical rocket propellants that can be controlled (ignited, throttled and extinguished) through the application and removal of an electric current. This behavior may enable the propellant to be used in multimode propulsion systems utilizing the ablative pulsed plasma thruster. The performance of an electric solid propellant operating in an electrothermal ablation-fed pulsed plasma thruster was investigated using an inverted pendulum micro-newton thrust stand. The impulse bit and specific impulse of the device using the electric solid propellant were measured for short-duration test runs of 100 pulses and longer-duration runs to end-of-life, at energy levels …

Software-Based Monitoring And Analysis Of A Usb Host Controller Subject To Electrostatic Discharge, Natasha Jarus, Antonio Sabatini, Pratik Maheshwari, Sahra Sedigh Sarvestani

Electrical and Computer Engineering Faculty Research & Creative Works

Observing, understanding, and mitigating the effects of failure in embedded systems is essential for building dependable control systems. We develop a software-based monitoring methodology to further this goal. This methodology can be applied to any embedded system peripheral and allows the system to operate normally while the monitoring software is running. We use software to instrument the operating system kernel and record indicators of system behavior. By comparing those indicators against baseline indicators of normal system operation, faults can be detected, and appropriate action can be taken. We implement this methodology to detect faults caused by electrostatic discharge in a …

Optical And Structural Properties Of Nickel Doped Zinc Oxide Grown By Metal Organic Chemical Vapor Deposition (Mocvd) At Different Reaction Chamber Conditions, Zahra Manzoor, Vishal Saravade, Alexis Margaret Corda, Ian Ferguson, Na Lu

Electrical and Computer Engineering Faculty Research & Creative Works

Metal organic chemical vapor deposition (MOCVD) growth of nickel-doped zinc oxide (Ni-doped ZnO) thin films on sapphire was investigated. The structural and optical properties were studied. The samples were grown at two substrate temperatures (i.e., 450 and 550°C) and at three chamber pressures (22, 30 and 100 Torr). The Ni-doped ZnO samples showed the (002) hexagonal crystal structure with signs of secondary phases in X-ray diffraction (XRD) measurements. However, different XRD peak intensities were observed for these samples at different growth conditions with the same Ni flow rate injection to the reaction chamber. The samples grown at different growth conditions …

Statistical Eye Diagram Analysis Based On Double-Edge Responses For Coding Buses, Xiuqin Chu, Wenwu Wang, Jun Wang, Xiangyu Dai, Jun Fan, Yushan Li

Electrical and Computer Engineering Faculty Research & Creative Works

For high-speed coding buses, it is a great challenge to evaluate the eye diagram accurately. Assuming that all data bits are independent and have uniform probabilities as previous estimation methods have done is not valid. In this paper, a new statistical method is proposed to estimate the worst-case eye diagrams and bit-error-rate (BER) eye diagrams for coding buses. The probability distribution of coded bus bit vectors is modeled based on the coding rule constraints. Then, actual worst pattern and eye diagram calculation is derived based on bus bit transition probabilities and double-edge responses. In order to validate the method, a …

Rugged Linear Array For Iot Applications, Lidong Chi, Zi Bin Weng, Shu Meng, Yihong Qi, Jun Fan, Weihua Zhuang, James L. Drewniak

Electrical and Computer Engineering Faculty Research & Creative Works

In this article, a rugged linear array is proposed for covering both the LTE and 5G bands with an intermediate gain. The antenna is composed of a driven element, a set of directors, and a set of reflectors, where the excited element is a wideband high-efficiency electromagnetic structure (WHEMS) and the parasitic elements consist of metal rods. To achieve a rugged design, similar to the classic Yagi antenna, all of the elements should be conductively connected, so that it can be welded. The weldable mechanism is started on the driven radiating element. In addition, a balun is introduced in the …

Short-Baseline High-Precision Dgps For Smart Snow Blower, Yunlong Luo, Zi Bin Weng, Yihong Qi, Lei Deng, Wei Yu, Fuhai Li, James L. Drewniak, Weihua Zhuang, Miao Miao, Jing Huang

Electrical and Computer Engineering Faculty Research & Creative Works

High-precision positioning is critical for many Internet-of-Things (IoT) applications; however, most existing approaches are too expensive to be used in commercial products. A highly accurate differential global positioning system (DGPS) has not been widely used because of the difficulty in solving integer ambiguities in the single-frequency carrier phase. Multipath interference and receiver noise are the main reasons for limiting the DGPS accuracy and efficiency in solving integer ambiguities. In this article, we propose a combination of anti-multipath antennas and high-performance GPS receivers to effectively mitigate impairments due to multipath propagation and receiver noise. Furthermore, by exploiting more data available from …

Jet Ejection Following Drop Impact On Micropillared Hydrophilic Substrates, Anayet Ullah Siddique, Marcus Trimble, Feng Zhao, Mark M. Weislogel, Hua Tan

Electrical and Computer Engineering Faculty Research & Creative Works

Droplet-wall interactions are well known to generate a wide variety of outcomes such as spreading, splashing, receding, jetting, and rebounding. In this paper, we focus on the evolution of jets that form during the recoil of impinging drops on partially wetting hydrophilic substrates composed of cylindrical micropillars. The impact of the millimeter-sized drops of water-glycerol mixtures on the micro structured hydrophilic substrates is investigated by high-speed video photography. Impact velocity and fluid viscosity are varied to characterize the jets. Wetting angles are maintained in the range of 43.6° ≤θ≤51.4°. A regime map is constructed to convey the jet behavior at …

Thermal Properties Of Sodium Borosilicate Glasses As A Function Of Sulfur Content, Jason M. Lonergan, Charmayne Lonergan, Joshua Silverstein, Pornsinee Cholsaipant, John Mccloy

Materials Science and Engineering Faculty Research & Creative Works

Sulfur trioxide (SO₃) additions, up to 3.0 mass%, were systematically investigated for effects on the physical properties of sodium borosilicate glass melted in air, with a sulfur-free composition of 50SiO₂–10Al₂O₃–12B₂O₃–21Na₂O–7CaO (mass%). Solubility measurements, using electron microscopy chemical analysis, determined the maximum loading to be ~1.2 mass% SO₃. It was found that measured sulfur (here as sulfate) additions up to 1.18 mass% increased the glass transition temperature by 3%, thermal diffusivity by 11%, heat capacity by 10%, and thermal conductivity by 20%, and decreased the …

An Experimental Investigation Of Asphaltene Stability In Heavy Crude Oil During Carbon Dioxide Injection, Sherif Fakher, Mohamed Ahdaya, Mukhtar Elturki, Abdulmohsin Imqam

Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works

Carbon dioxide (CO₂) injection is one of the most applied enhanced oil recovery methods in the hydrocarbon industry, since it has the potential to increase oil recovery significantly and can help reduce greenhouse gases through carbon storage in hydrocarbon reservoirs. Carbon dioxide injection has a severe drawback, however, since it induces asphaltene precipitation by disrupting the asphaltene stability in crude oil that bears even the slightest asphaltene concentration. This can result in severe operational problems, such as reservoir pore plugging and wellbore plugging. This research investigates some of the main factors that impact asphaltene stability in crude oil …

Poly (Lactic Acid)/Nanoclay Nanocomposites For Packaging Applications, Maissa Akram Adi

Theses

With increasing stringent environmental regulations and attempts to reduce dependence on fossil fuels for polymer production, bio-based polymers are receiving appreciable global attention. In this context, bio-based poly (lactic acid) (PLA) is one of the most frequently used polymers in packaging applications. However, despite of its high versatility, this polymer is limited in packaging applications due to its low mechanical properties. The two-dimensional nanofillers such as nanoclay and graphene are well known for improving the thermo-mechanical properties of polymers at low concentrations. However, increasing higher filler concentration to improve barrier properties of polymers reduces their mechanical properties which is a …

Cybersecurity, Digital Forensics, And Mobile Computing: Building The Pipeline Of Next-Generation University Graduates Through Focused High School Summer Camps, Mahmoud K. Quweider, Fitratullah Khan, Liyu Zhang, Lei Xu, Yessica Rodriguez, Yessenia Rodriguez

Computer Science Faculty Publications

To prepare the next generation of skilled university graduates that would help in filling the national need for cybersecurity, digital forensics, and mobile computing professionals, a team of minority/under-represented graduate students, the University Upward Bound Program (a federally funded program and part of the U.S. Department of Education; one of 967 programs nationwide) staff, and faculty from the Computer Science (CS) department got together and proposed a focused 10-week long funded summer camp for two local high schools with the following objectives:

1. Provide graduate students to instruct in the areas of` mobile application development, forensics and cyber Security.

2. …

Distributed Manufacturing Of Open Source Medical Hardware For Pandemics, Joshua M. Pearce

Michigan Tech Publications, Part 1

Distributed digital manufacturing offers a solution to medical supply and technology shortages during pandemics. To prepare for the next pandemic, this study reviews the state-of-the-art of open hardware designs needed in a COVID-19-like pandemic. It evaluates the readiness of the top twenty technologies requested by the Government of India. The results show that the majority of the actual medical products have some open source development, however, only 15% of the supporting technologies required to produce them are freely available. The results show there is still considerable research needed to provide open source paths for the development of all the medical …

Log Truck Value Analysis From Increased Rail Usage, Sangpil Ko, Pasi Lautala, Kuilin Zhang

Michigan Tech Publications, Part 1

Over the past several decades, the transportation of raw materials (logs) has increasingly shifted from the railway to trucks. However, the long-term sustainability of this shift is being questioned due to the shortage of truck drivers, fluctuation of fuel prices, and changes in hours of service laws. The industry is interested in the possibility to shift more logs back to the railway but the impact of such a shift on truckers has not been investigated. This study attempted to quantify the impact of such a change on the operations of log truckers by calculating time efficiency (percentage of daily hours …

Coupled Ocean-Atmosphere Modeling Over The Maritime Continent: A Review, Pengfei Xue, Paola Malanotte-Rizzoli, Jun Wei, Elfatih A.B. Eltahir

Michigan Tech Publications, Part 1

The Maritime Continent (MC) plays a vitally important role in the Earth's climate system from both oceanic and atmospheric perspectives. While the critical role of ocean-atmosphere coupled dynamics over the MC has long been recognized, development of two-way coupled regional climate models for this region is still in its early stages. In this work, the authors review recent progress in two-way coupled ocean-atmosphere regional climate modeling. Development of coupled models and their applications in the MC are summarized. Model performances are discussed with a focus on regional oceanic and atmospheric characteristics. Through a critical review of modeling advances and limitations …

Mechanical Properties Of Boehmeria Nivea Natural Fabric Reinforced Epoxy Matrix Composite Prepared By Vacuum-Assisted Resin Infusion Molding, Fabio Da Costa Garcia Filho, Fernanda Santos Da Luz, Lucio Fabio Cassiano Nascimento, Kestur Gundappa Satyanarayana, Jaroslaw W. Drelich, Sergio Neves Monteiro

Michigan Tech Publications, Part 1

Natural lignocellulosic fibers and corresponding fabrics have been gaining notoriety in recent decades as reinforcement options for polymer matrices associated with industrially applied composites. These natural fibers and fabrics exhibit competitive properties when compared with some synthetics such as glass fiber. In particular, the use of fabrics made from natural fibers might be considered a more ecient alternative, since they provide multidirectional reinforcement and allow the introduction of a larger volume fraction of fibers in the composite. In this context, it is important to understand the mechanical performance of natural fabric composites as a basic condition to ensure ecient engineering …