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Articles 1 - 8 of 8
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An Improved Polynomial Chaos Expansion Based Response Surface Method And Its Applications On Frame And Spring Engineering Based Structures, Mhd A. Hafez
ETD Archive
In engineering fields, computational models provide a tool that can simulate a real world response and enhance our understanding of physical phenomenas. However, such models are often computationally expensive with multiple sources of uncertainty related to the model’s input/assumptions. For example, the literature indicates that ligament’s material properties and its insertion site locations have a significant effect on the performance of knee joint models, which makes addressing uncertainty related to them a crucial step to make the computational model more representative of reality. However, previous sensitivity studies were limited due to the computational expense of the models. The high computational …
Development, Characterization, And Modeling Of Physical, Mechanical, And Durability Properties Of Sustainable Ultra-High Performance Concrete, Tawsif M. Hasan
Development, Characterization, And Modeling Of Physical, Mechanical, And Durability Properties Of Sustainable Ultra-High Performance Concrete, Tawsif M. Hasan
ETD Archive
Ultra-High Performance Concrete (UHPC) is an advanced concrete material with superior mechanical strength, high tensile ductility, and exceptional durability, including negligible permeability. Despite these excellent material properties, the use of UHPC in structural applications is limited because of the high cost of commercially available UHPC products. Therefore, developing non-proprietary UHPC mixtures using local materials is a viable way to reduce the initial cost of UHPC. In this research, sustainable and cost-effective UHPC mixtures were developed using locally sourced materials so that UHPC may be more affordable to a wider variety of applications. Specifically, locally available Type I-II cement, local sand …
Color Removal And Treatment Of Dye And Sugar Waste Water Using Low Cost Adsorbents, Saisantosh Vamshi Harsha Madiraju
Color Removal And Treatment Of Dye And Sugar Waste Water Using Low Cost Adsorbents, Saisantosh Vamshi Harsha Madiraju
ETD Archive
This study was undertaken to determine the treatment of wastewater from dye and sugar industry for removal of color. This specific treatment consists of adsorption using low cost adsorbents and micro filtration using whatman-41 micro filters. Considerations of this treatment process is to take the samples using batch adsorption and avoid coagulation with further dilution. Numerous runs were made with the ideal waste samples prepared in the laboratory. As a first step in the study different dyes were considered using different concentrations of sugar wastewater. Samples were treated with three different low-cost adsorbents. These treated samples using low cost adsorbents …
Designing Novel Grooved Pallets For Industrial Application, Mirza Mohammed Abdullah Baig
Designing Novel Grooved Pallets For Industrial Application, Mirza Mohammed Abdullah Baig
ETD Archive
The purpose of this study was to model an improved pallet design which could overcome the drawbacks and failures of the pallets available in the market today. The new modeled pallets were designed to improve the capacity of the individual pallets and thereby increase the efficiency of the material handling process. The new modeled pallets were also designed with the aim to replace the racking system used for storage in the warehouse industry. The study was performed using two finite element analysis software, SOLIDWORKS and ANSYS, as analysis tools to study the behavior of the design under various real world …
Factors Affecting Minimum Dissolved Oxygen Concentration In Streams, Chistopher Robert Huhnke
Factors Affecting Minimum Dissolved Oxygen Concentration In Streams, Chistopher Robert Huhnke
ETD Archive
Modeling water quality has been shown to be a useful tool in strategizing water quality management. Dissolved oxygen (DO) has one of the largest impacts on water quality compared to other parameters. The purpose of the dissertation research is to generate a regression equation model, using the US EPA QUAL2K model as the base, to determine different factors affecting minimum dissolved oxygen concentrations in streams, to determine the critical distance for the minimum dissolved oxygen concentration, and the magnitude of impact of each parameter. Based on regression analysis, the factors affecting minimum DO in river water are effluent biochemical oxygen …
Adsorption And Microfiltration Processes To Treat Dye And Coffee Wastewater., Abhiram Siva Prasad Pamula
Adsorption And Microfiltration Processes To Treat Dye And Coffee Wastewater., Abhiram Siva Prasad Pamula
ETD Archive
Wastewater from coffee processing industry creates high biological and chemical oxygen demand in the surface water. In addition to coffee wastewater from coffee industry, dyes from textile industry enter surface water affecting water quality in terms of transmissivity of light. Adsorption is an economical wastewater treatment process to remove color from dye and coffee wastewater. In the current thesis, adsorption using low-cost adsorbents like peanut hull and onion peel are used to treat combined dye and coffee wastewater. Three representative dyes including acid black 48, disperse yellow 3, crystal violet certified with processed coffee is used in preparing batch adsorption …
Specification Recommendation For Use Of High Performance Repair Material, Jennifer Woods
Specification Recommendation For Use Of High Performance Repair Material, Jennifer Woods
ETD Archive
The State of Ohio and the Ohio Department of Transportation (ODOT) have sought out ways to extend the life of the repair materials used by their construction crews, specifically, using high performance repair materials for the purposes of patching worn down or cracked sections of highways and bridge decks. Ohio is known for its frequent changes in weather, with freeze-thaw cycles occurring multiple times throughout the year. These cycles affect the lifespan of the repair material and create more maintenance for the DOT. Products that combat this problem were chosen, installed and examined over a year period to determine which …
The Behavior Of Simply Supported Plates Under Extreme Shear Loading, Mhd Ammar Hafez
The Behavior Of Simply Supported Plates Under Extreme Shear Loading, Mhd Ammar Hafez
ETD Archive
Steel plates are planar structural elements with one dimension significantly smaller than the others. These elements may fail due to either material yielding or buckling. Buckling is a sudden failure mode, which is not desirable in structural engineering applications. Buckling is called an “elastic buckling” when it happens before material yielding, and is termed as “plastic buckling” if it happens after material yielding. The focus of this thesis is on shear plates, which are plates that are primarily subjected to shear loads. Several studies were conducted to increase the elastic buckling capacity of plates by adding stiffeners to plates. However, …