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Articles 6031 - 6060 of 9242
Full-Text Articles in Engineering
Effect Of Heavy-Duty Electric Vehicles On Tire–Pavement Contact Forces, Jaime Hernandez, Angeli Jayme, Johann J. Cardenas Huaman, Imad L. Al-Qadi
Effect Of Heavy-Duty Electric Vehicles On Tire–Pavement Contact Forces, Jaime Hernandez, Angeli Jayme, Johann J. Cardenas Huaman, Imad L. Al-Qadi
Civil and Environmental Engineering Faculty Research and Publications
Electric vehicles offer higher acceleration than conventional internal combustion engines due to larger engine torque. The design and placement of battery packs in heavy-duty electric vehicles are still being optimized, as they can affect axle load distributions and consequently impact pavement analysis and design. This study presents a finite element model of a dual tire assembly considering varying load and acceleration conditions to investigate the effect of conventional and electric heavy-duty vehicles on tire–pavement contact forces. Three scenarios for battery pack locations were examined, leading to six loading conditions for both internal combustion engines and electric trucks. The resulting 3D …
Reconstruction Of The Neglected: Cal Poly’S Old Powerhouse, Sophie Meier, Morgan Cuthbert, Luke Zamlich
Reconstruction Of The Neglected: Cal Poly’S Old Powerhouse, Sophie Meier, Morgan Cuthbert, Luke Zamlich
Architectural Engineering
Cal Poly’s Old Powerhouse (BLDG 76) is the only remaining building from the original Polytechnic school left on campus. It was built in 1910 and placed on the national registry in 1993. The Powerhouse used to do exactly what its name implies, provide power to campus. After it retired from its purpose, it was used for many other use cases, particularly as a space for the College of Architecture and Environmental design. Through its time, it was used as a classroom space, pottery/creative space, a workshop, and even once contained a fishpond. The building was then abandoned in 1990, a …
Deep Reinforcement Learning For Online Scheduling Of Photovoltaic Systems With Battery Energy Storage Systems, Yaze Li, Jingxian Wu, Yanjun Pan
Deep Reinforcement Learning For Online Scheduling Of Photovoltaic Systems With Battery Energy Storage Systems, Yaze Li, Jingxian Wu, Yanjun Pan
Electrical Engineering Faculty Publications and Presentations
A new online scheduling algorithm is proposed for photovoltaic (PV) systems with battery-assisted energy storage systems (BESS). The stochastic nature of renewable energy sources necessitates the employment of BESS to balance energy supplies and demands under uncertain weather conditions. The proposed online scheduling algorithm aims at minimizing the overall energy cost by performing actions such as load shifting and peak shaving through carefully scheduled BESS charging/discharging activities. The scheduling algorithm is developed by using deep deterministic policy gradient (DDPG), a deep reinforcement learning (DRL) algorithm that can deal with continuous state and action spaces. One of the main contributions of …
Electrical And Thermal Characterization Of (250 °C) Sic Power Module Integrated With Ltcc-Based Isolated Gate Driver, Salahaldein Ali Aboajila Ahmed, Pengyu Lai, Sudharsan Chinnaiyan, H. Alan Mantooth, Zhong Chen
Electrical And Thermal Characterization Of (250 °C) Sic Power Module Integrated With Ltcc-Based Isolated Gate Driver, Salahaldein Ali Aboajila Ahmed, Pengyu Lai, Sudharsan Chinnaiyan, H. Alan Mantooth, Zhong Chen
Electrical Engineering Faculty Publications and Presentations
The high-voltage SiC MOSFET power modules enable high-frequency and high-efficiency power conversion. The parasitic inductances induced by traditional packages of this device technology significantly deteriorate device switching performance, especially in high-temperature applications. In this paper, a novel low-cost discrete SMD component gate driver embedded in a SiC MOSFET power module is introduced. A newly integrated packaging structure has been introduced and proved to be efficient in reducing package-related turn-on loss and turn-off parasitic ringing. However, the gate propagation delay and optocoupler on-chip weak output signal in such a structure become limitations for further pushing the operating frequency and the output …
Tourniquet Pressure Gradient Measurement Apparatus, Luis Enrique Perez, Elsa Elizabeth Bates
Tourniquet Pressure Gradient Measurement Apparatus, Luis Enrique Perez, Elsa Elizabeth Bates
Biomedical Engineering
The goal of this project was to design a device that would measure pressure gradient data across the width of an elastic and inelastic tourniquet cuff using a human limb model. The main customer requirements that were focused on were to accurately measure the pressure from a tourniquet, keep the cost down, and be easy to use. The targeted design specifications were to read pressure values ranging from 0-400 mmHg, keep the test length under 5 minutes, and to keep the cost of materials under $400. The design of the device ended up consisting of 5 IV pouches that were …
Auto Adjustable Flow Regulator, Ethan Hemmerlin, Jack Dooley
Auto Adjustable Flow Regulator, Ethan Hemmerlin, Jack Dooley
Biomedical Engineering
The Auto-Adjustable Oxygen Flowmeter device is to be used in conjunction with an oxygen source or reservoir, as well as a low-flow nasal cannula apparatus. The device is applicable for patients requiring an oxygen flow rate of 0-6 L/min. Further, the device works to maintain a healthy blood-oxygen concentration of 90-94% for typical patients, as well as an 88-92% range for COPD patients who are chronic CO2 retainers. A reflective pulse oximeter will record the SpO2 concentration of the patient. The outputted SpO2 concentration will be transmitted to an internal processing PCB from which it will interact with the oxygen …
Soil Nitrate Prediction Using Ftir-Atr, Vis-Nir, And Raman Spectroscopy, Sabiha Ferdous
Soil Nitrate Prediction Using Ftir-Atr, Vis-Nir, And Raman Spectroscopy, Sabiha Ferdous
Department of Agricultural and Biological Systems Engineering: Dissertations, Theses, and Student Research
Fourier transform infrared spectroscopy (FTIR) combined with Attenuated total reflectance (ATR), Visible-Near Infrared spectroscopy (Vis-NIR), and Raman spectroscopy (RS) are non-destructive techniques for rapid determination of nitrogen compounds in soil. Leveraging FTIR-ATR and Vis-NIR spectra using partial least squares regression (PLSR) modeling, the study aims to predict soil nitrate content and explored the feasibility of Raman spectroscopy to detect nitrate (NO3-), nitrite (NO2-), and ammonium (NH4+) in soil. Soil samples were collected from four different fields, dried, sieved (2mm), and then used for collecting spectra (FTIR-ATR and Vis-NIR). Laboratory analysis was …
Utilization Of Caputo Fractional Derivative In Mhd Nanofluid Flow With Soret And Thermal Radiation Effects, Harshad Patel, Gopal Nanda
Utilization Of Caputo Fractional Derivative In Mhd Nanofluid Flow With Soret And Thermal Radiation Effects, Harshad Patel, Gopal Nanda
Applications and Applied Mathematics: An International Journal (AAM)
In existence of heat diffusion and thermal radiation, an analytical equation is found for unsteady MHD flow past an exponentially accelerating vertical plate in optically thick water based nanofluid. The governing equations are made dimensionless by similarity transformation. A definition of Caputo fractional derivative is applied to generalize governing system of partial differential equations. Laplace transform techniques are applied and obtained the analytical solutions of proposed problems. For a physical point of view, numerical results are obtained using MATLAB software and presented via graphs. From the results, it is concluded that magnetic fields tend to reduce velocity. It is also …
Spontaneous Alignment Of Myotubes Through Myogenic Progenitor Cell Migration, Lauren E. Mehanna, Adrianna R. Osborne, Charlotte A. Peterson, Brad J. Berron
Spontaneous Alignment Of Myotubes Through Myogenic Progenitor Cell Migration, Lauren E. Mehanna, Adrianna R. Osborne, Charlotte A. Peterson, Brad J. Berron
Chemical and Materials Engineering Faculty Publications
In large-volume muscle injuries, widespread damage to muscle fibers and the surrounding connective tissue prevents myogenic progenitor cells (MPCs) from initiating repair. There is a clinical need to rapidly fabricate large muscle tissue constructs for integration at the site of large volume muscle injuries. Most strategies for myotube alignment require microfabricated structures or prolonged orientation times. We utilize the MPC’s natural propensity to close gaps across an injury site to guide alignment on collagen I. When MPCs are exposed to an open boundary free of cells, they migrate unidirectionally into the cell-free region and align perpendicular to the original boundary …
Laboratory Evaluation Of High-Temperature Resistant Lysine-Based Polymer Gel Systems For Leakage Control, Tao Song, Xuyang Tian, Baojun Bai, Yugandhara Eriyagama, Mohamed Ahdaya, Adel Alotibi, Thomas P. Schuman
Laboratory Evaluation Of High-Temperature Resistant Lysine-Based Polymer Gel Systems For Leakage Control, Tao Song, Xuyang Tian, Baojun Bai, Yugandhara Eriyagama, Mohamed Ahdaya, Adel Alotibi, Thomas P. Schuman
Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works
In-situ crosslinking gel known for its cost-effectiveness, has been employed for decades to plug high-permeability features in subsurface environments. However, some commonly used crosslinkers are being phased out due to the increasingly rigorous environmental regulations. As a newly discovered environmentally friendly crosslinker, lysine can crosslink the partially hydrolyzed polyacrylamide through transamidation reaction. The present work aimed to study the effect of polymer composition and concentration on the gelation behavior of lysine and high molecular weight acrylamide-based polymers. Several commercial high molecular weight polymers with different contents of 2-Acrylamido-2-methyl-1-propane sulfonic acid (AMPS) including AN-105/125, SAV-55/37/28, and SAV-10 were deployed in this …
Inverting Geodetic Strain Rates For Slip Deficit Rate In Complex Deforming Zones: An Application To The New Zealand Plate Boundary, Kaj M. Johnson, Laura M. Wallace, Jeremy Maurer, Ian Hamling, Charles Williams, Chris Rollins, Matt Gerstenberger, Russ Van Dissen
Inverting Geodetic Strain Rates For Slip Deficit Rate In Complex Deforming Zones: An Application To The New Zealand Plate Boundary, Kaj M. Johnson, Laura M. Wallace, Jeremy Maurer, Ian Hamling, Charles Williams, Chris Rollins, Matt Gerstenberger, Russ Van Dissen
Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works
The potential for future earthquakes on faults is often inferred from inversions of geodetically derived surface velocities for locking on faults using kinematic models such as block models. This can be challenging in complex deforming zones with many closely spaced faults or where deformation is not readily described with block motions. Furthermore, surface strain rates are more directly related to coupling on faults than surface velocities. We present a methodology for estimating slip deficit rate directly from strain rate and apply it to New Zealand for the purpose of incorporating geodetic data in the 2022 revision of the New Zealand …
Layered Mantle Flow Field Associated With Plate Kinematics And Slab Modulation Underneath The Horseshoe-Shaped Banda Arc-Islands, Sijia Li, Fansheng Kong, Kelly H. Liu, Stephen S. Gao
Layered Mantle Flow Field Associated With Plate Kinematics And Slab Modulation Underneath The Horseshoe-Shaped Banda Arc-Islands, Sijia Li, Fansheng Kong, Kelly H. Liu, Stephen S. Gao
Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works
The Banda Arc-Continent Collision Zone Signifies One Of The Most Seismically Active And Tectonically Intricate Zones. The High Convergence Rate Across The Region, Coupled With The Exceptionally Arcuate Arc And Subducted Slab, Makes It An Ideal Locale For Investigating Interactions Between Plate (Slab) Kinematics And Plastic Flow In The Asthenosphere, Which Can Be Diagnosed By Seismic Anisotropy From Shear Wave Splitting Analyses. In Total, 206 Pairs Of Splitting Measurements Using Teleseismic SKS, SKKS, And PKS, Along With 43 Pairs Using Local S Phases, Are Obtained By Utilizing Broadband Seismic Data From Five Permanent Seismic Stations. To Reduce The Ambiguity In …
Analyzing Biomedical Datasets With Symbolic Tree Adaptive Resonance Theory, Sasha Petrenko, Daniel B. Hier, Mary A. Bone, Tayo Obafemi-Ajayi, Erik J. Timpson, William E. Marsh, Michael Speight, Donald C. Wunsch
Analyzing Biomedical Datasets With Symbolic Tree Adaptive Resonance Theory, Sasha Petrenko, Daniel B. Hier, Mary A. Bone, Tayo Obafemi-Ajayi, Erik J. Timpson, William E. Marsh, Michael Speight, Donald C. Wunsch
Chemistry Faculty Research & Creative Works
Biomedical Datasets Distill Many Mechanisms Of Human Diseases, Linking Diseases To Genes And Phenotypes (Signs And Symptoms Of Disease), Genetic Mutations To Altered Protein Structures, And Altered Proteins To Changes In Molecular Functions And Biological Processes. It Is Desirable To Gain New Insights From These Data, Especially With Regard To The Uncovering Of Hierarchical Structures Relating Disease Variants. However, Analysis To This End Has Proven Difficult Due To The Complexity Of The Connections Between Multi-Categorical Symbolic Data. This Article Proposes Symbolic Tree Adaptive Resonance Theory (START), With Additional Supervised, Dual-Vigilance (DV-START), And Distributed Dual-Vigilance (DDV-START) Formulations, For The Clustering Of …
A Novel And Enhanced Calibration Of The Tilting Weir As A Flow Measurement Structure, Joseph E. Pugh, S. Karan Venayagamoorthy, Timothy K. Gates, Céline Berni, Marie Rastello
A Novel And Enhanced Calibration Of The Tilting Weir As A Flow Measurement Structure, Joseph E. Pugh, S. Karan Venayagamoorthy, Timothy K. Gates, Céline Berni, Marie Rastello
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
A large collection of laboratory measurements of piezometric head (h) and discharge (Q) were made over hydraulic models of a tilting weir at nine different angles, ranging from 25.7° to 90° within a 0.3-m-wide flume. These measurements were corroborated with additional laboratory data taken within a 1-m-wide flume across four inclination angles. The range of both inclination angle (θ) and flow scale examined in this study elucidate the nature of the head-discharge rating equation beyond previous work. Results show that as θ decreases under a constant Q, the h over the weir decreases in a monotonic fashion due to the …
A Priori Procedure To Establish Spinodal Decomposition In Alloys, Simon Divilov, Hagen Eckert, Cormac Toher, Rico Friedrich, Adam C. Zettel, Donald W. Brenner, William G. Fahrenholtz, Douglas E. Wolfe, Eva Zurek, Jon Paul Maria, Nico Hotz, Xiomara Campilongo, Stefano Curtarolo
A Priori Procedure To Establish Spinodal Decomposition In Alloys, Simon Divilov, Hagen Eckert, Cormac Toher, Rico Friedrich, Adam C. Zettel, Donald W. Brenner, William G. Fahrenholtz, Douglas E. Wolfe, Eva Zurek, Jon Paul Maria, Nico Hotz, Xiomara Campilongo, Stefano Curtarolo
Materials Science and Engineering Faculty Research & Creative Works
Spinodal decomposition can improve a number of essential properties in materials, especially hardness. Yet, the theoretical prediction of the onset of this phenomenon (e.g., temperature) and its microstructure (e.g., wavelength) often requires input parameters coming from costly and time-consuming experimental efforts, hindering rational materials optimization. Here, we present a procedure where such parameters are not derived from experiments. First, we calculate the spinodal temperature by modeling nucleation in the solid solution while approaching the spinode boundary. Then, we compute the spinodal wavelength self-consistently using a few reasonable approximations. Our results show remarkable agreement with experiments and, for NiRh, the calculated …
Designing Explainable Ai To Improve Human-Ai Team Performance: A Medical Stakeholder-Driven Scoping Review, Harishankar V. Subramanian, Casey I. Canfield, Daniel Burton Shank
Designing Explainable Ai To Improve Human-Ai Team Performance: A Medical Stakeholder-Driven Scoping Review, Harishankar V. Subramanian, Casey I. Canfield, Daniel Burton Shank
Engineering Management and Systems Engineering Faculty Research & Creative Works
The rise of complex AI systems in healthcare and other sectors has led to a growing area of research called Explainable AI (XAI) designed to increase transparency. In this area, quantitative and qualitative studies focus on improving user trust and task performance by providing system- and prediction-level XAI features. We analyze stakeholder engagement events (interviews and workshops) on the use of AI for kidney transplantation. From this we identify themes which we use to frame a scoping literature review on current XAI features. The stakeholder engagement process lasted over nine months covering three stakeholder group's workflows, determining where AI could …
Case Study: Diesel Powered Loaders Compared To Electric Loaders In Heavy Civil Construction, Jayson Downs
Case Study: Diesel Powered Loaders Compared To Electric Loaders In Heavy Civil Construction, Jayson Downs
Construction Management
As the construction sector evolves, the environmental consequences of greenhouse gasses have become a significant issue. Numerous contractors are transitioning to electric-powered systems, which offer more energy-efficient methods for heavy machinery, enhanced productivity, and construction equipment that meets new and improved emission standards. This paper aims to examine the viability of heavy civil construction firms transitioning from traditional diesel-powered wheel loaders to electric wheel loaders. Given the competitive and saturated market in road construction, many contractors have already started investing in electric systems. This results in cost savings in terms of fuel efficiency and operating expenses compared to conventionally fueled …
Efficacy Of Passive Ventilation With High Exhaust Demands: A Case Study Of Cal Poly Sst, Siddarth Bokka
Efficacy Of Passive Ventilation With High Exhaust Demands: A Case Study Of Cal Poly Sst, Siddarth Bokka
Construction Management
The Simpson Strong Tie Demonstration Laboratory serves as a multipurpose space allowing students at the College of Architecture and Environmental Design at California Polytechnic State University to build full scale construction projects. The building features a material storage area, a high bay for construction of full-scale projects, and a mezzanine level that houses digital fabrication equipment. However, the building was never designed to house the specific equipment currently installed on the mezzanine and ventilate the exhaust fumes from them. Rather, the building relies on passive natural ventilation that is likely ineffective at properly exhausting hazardous fumes, resulting in complaints from …
The Impact Of Culture On Construction, Vatulele Uluakiotonga Finau
The Impact Of Culture On Construction, Vatulele Uluakiotonga Finau
Construction Management
The aim of this comprehensive exploration is to identify elements within Japanese, Islamic/Arabic, and Tongan cultures that can be implemented into construction practices in California, leveraging their unique values to enhance home design and construction. The study reveals that culture plays a pivotal role in shaping the design and construction of homes, reflecting deeply held values, traditions, and societal norms. Through qualitative research, expert interviews, and a detailed literature review, key elements defining each cultural approach to housing are elucidated. From the emphasis on privacy and natural ventilation in Japanese homes to the integration of modesty and hospitality in Islamic/Arabic …
Lemur Enclosure, Joshua Mancio, Justin Krietzberg
Lemur Enclosure, Joshua Mancio, Justin Krietzberg
Construction Management
Zoo-to-You, a local wildlife conservation zoo, proposed a project to construct a new shelter for their lemurs due to the inadequacy of protection for extreme heat or cold weather of their previous enclosure. With three lemurs in residence, the zoo sought to create a spacious and insulated shelter that would provide protection from the elements while allowing connectivity to the adjacent enclosures. Situated amidst two existing circular cages with a gap in between, the project presented unique site conditions on a concrete slab. The scope of the project encompassed estimating, design, material procurement, build-out, and owner turnover, with the objective …
Effects Of The 2022 California Building Energy Efficiency Standards On New Construction In San Luis Obispo County, Christopher Hoefer
Effects Of The 2022 California Building Energy Efficiency Standards On New Construction In San Luis Obispo County, Christopher Hoefer
Construction Management
California released the first Building Efficiency Standards, or Energy Code, in 1976 and has updated them every three years. These standards aim at limiting the amount of energy use and greenhouse gas emissions by buildings in the state. California claims that these standards have saved consumers billions on utility bills, but there is limited information on the upfront impact the Efficiency Standards have had on new construction. This study sought to evaluate the impact that the 2022 California Building Energy Efficiency Standards had on new construction in San Luis Obispo County. Interviews were conducted with local specialty contractors in order …
Creating Content For Prison Design Course: Nordic Countries Vs. United States, Calvin Steven Clauson
Creating Content For Prison Design Course: Nordic Countries Vs. United States, Calvin Steven Clauson
Construction Management
Since 2010, prisons in Nordic countries have begun to take a very progressive approach to rehabilitating prisoners, addressing prisoners more humanely than is traditionally done in the United States. This project aims to develop course content that looks at the design elements of prisons in the United States and performs a comparative analysis with more progressive Nordic prison designs. Cal Poly’s construction management department will incorporate the developed content into one module of a co-taught course with sociology. The course will examine the ways social changes impact the construction of prisons and the social impacts of design and construction on …
Sustainability Of Apparel Exporting Industry Facilities In South Asia, Sree L. Anilkuma, George H. Berghorn, M.G. Matt Syal
Sustainability Of Apparel Exporting Industry Facilities In South Asia, Sree L. Anilkuma, George H. Berghorn, M.G. Matt Syal
The Professional Constructor
The apparel industry’s contribution to the gross domestic product in South Asian countries is significant and provides livelihoods for millions of people in this region. Although this industry’s contribution towards the economy is substantial, its negative impact on the environment and the working conditions have always been critical issues of concern. The two countries of emphasis in this research, Bangladesh, and India, have experienced numerous garment factory accidents in the form of building collapses, factory fires, and boiler explosions, which have killed and injured thousands of workers. These incidents have brought attention on the need to improve poor facilities and …
Taxonomy Of Trust And Maslow’S Hierarchy Of Needsin The Construction Industry, Ann B. Lyons, Vivek Sharma, Shima Clarke
Taxonomy Of Trust And Maslow’S Hierarchy Of Needsin The Construction Industry, Ann B. Lyons, Vivek Sharma, Shima Clarke
The Professional Constructor
Trust is vital in every facet of life, enabling collaborative efforts and valuing contributions from various individuals. This is particularly true in the construction industry, where teamwork is essential for success. Prior research has consistently demonstrated that heightened trust levels significantly contribute to better project outcomes and increased client satisfaction. Despite its critical role, the construction industry has yet to adopt a structured hierarchical perspective of trust that aligns with its unique demands. This study aims to fill this gap by validating a comprehensive taxonomy of trust specifically designed for the construction sector. Through literature review, this study identifies key …
Student Solutions For Leaf Drying: A Collaborative Approach To Enhance Moringa Production In Ghana, Daniel Desoto
Student Solutions For Leaf Drying: A Collaborative Approach To Enhance Moringa Production In Ghana, Daniel Desoto
Construction Management
This paper expands on a project that seeks to address the need for an updated mechanical leaf drying system for local farmers in Ghana, Africa. Working with the local organization, Moringa Connect, we were able to connect and identify potential areas of improvement within the current existing system. This project involved aspects of design, fundraising, and the construction of a rotating metal hopper. This hopper was identified as a solution for a crucial pinch point currently seen in the processing of the leaves from a wet stage to the final dry product. The design and construction process had a multidisciplinary …
Designing A Chicken Coop For The San Luis Obispo High School Ffa Farm, Zoe King
Designing A Chicken Coop For The San Luis Obispo High School Ffa Farm, Zoe King
Construction Management
This paper covers the design process by a team of students from Cal Poly to provide a chicken coop for the San Luis Obispo High School FFA Farm. The project, initiated in Summer of 2023, aimed to replace their existing temporary chicken coops with a larger, better functioning structure that could house their 10+ chickens comfortably. The paper focuses primarily on the design phase but touches briefly on material procurement and construction. Through meetings with the client, the team developed a design that met the school’s design criteria and educational needs. The design process involved collaboration and many iterations of …
Design And Construction Of A Buddy Bench For An Elementary School Play Yard, Remy N. Hickle
Design And Construction Of A Buddy Bench For An Elementary School Play Yard, Remy N. Hickle
Construction Management
A buddy bench was designed, constructed, and installed at the Shasta Meadows Elementary School in Redding, California. A response to loneliness and bullying in schools, the buddy bench is a physical and nonverbal way students can identify the need for companionship on a school playground. By sitting on the bench, students, teachers or school administrators will see them and can come over to spend time with them. Grounded in personal connections and a deep understanding of the school's ethos, the buddy bench aims to foster empathy, inclusion, and support within the student community. Through collaborative efforts with school staff, students, …
Usage Of Three-Dimensional Reality Capture Products In Construction, Kyle Vaughn
Usage Of Three-Dimensional Reality Capture Products In Construction, Kyle Vaughn
Construction Management
3-Dimensional Reality Capture is an emerging technology employed in the construction industry, involving the usage of 360-Degree cameras which generate digital models of captured environments. The current products offered provide tools for recording as-built historical data, as well as provide more advanced functions for generating QC and project management focused reports based on site conditions. It is hypothesized that the products lack the usefulness to warrant further use from current applications. Interviews were conducted with reality capture vendor Cupix and a Hensel Phelps project team using qualitative questions to drive conversation on the product potential, and current extent of usage …
Jet-Driven Mixing Regimes Identified In The Unsteady Isothermal Filling Of Rectangular Municipal Water Storage Tanks, Pramod Narayan Bangalore, K. (Kelly) O. Homan
Jet-Driven Mixing Regimes Identified In The Unsteady Isothermal Filling Of Rectangular Municipal Water Storage Tanks, Pramod Narayan Bangalore, K. (Kelly) O. Homan
Mechanical and Aerospace Engineering Faculty Research & Creative Works
Poor mixing of old and new water in municipal water storage vessels is a well-documented basis for potentially harmful water quality degradation in drinking water distribution systems. This numerical study investigates the effects of inflow and operational variables on mixing in the jet-driven filling process, with a particular focus on the transition from inadequate to sufficient mixing levels. An isothermal unsteady reynolds-averaged-navier-stokes volume-of-fluid (RANS-VOF) simulation is used to model the variable-volume filling process, accounting for the moving free surface following a draw-down in the stored water volume. A low diffusivity tracer is used to mark the old-water volume, and a …
Heat Treatments For Minimization Of Residual Stresses And Maximization Of Tensile Strengths Of Scalmalloy® Processed Via Directed Energy Deposition, Rachel Boillat-Newport, Sriram Praneeth Isanaka, Jonathan Kelley, Frank Liou
Heat Treatments For Minimization Of Residual Stresses And Maximization Of Tensile Strengths Of Scalmalloy® Processed Via Directed Energy Deposition, Rachel Boillat-Newport, Sriram Praneeth Isanaka, Jonathan Kelley, Frank Liou
Mechanical and Aerospace Engineering Faculty Research & Creative Works
Scalmalloy® is an Al-Mg-Sc-Zr-Based Alloy Specifically Developed for Additive Manufacturing (AM). This Alloy is Designed for Use with a Direct Aging Treatment, as Recommended by the Manufacturer, Rather Than with a Multistep Treatment, as Often Seen in Conventional Manufacturing. Most Work with Scalmalloy® is Conducted using Powder Bed Rather Than Powder-Fed Processes. This Investigation Seeks to Fill This Knowledge Gap and Expand Beyond Single-Step Aging to Promote an overall Balanced AM-Fabricated Component. for This Study, Directed Energy Deposition (DED)-Fabricated Scalmalloy® Components Were Subjected to Low-Temperature Treatments to Minimize Residual Stresses Inherent in the Material Due to the Layer-By-Layer Build Process. …