Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 11 of 11 for “"statistical design of experiments"”.
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Improving an rRNA depletion protocol with statistical design of experiments
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2024-08-01
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Evaluation of concrete bridge deck overlays
… have been used by many states for the protection of bridge decks, but the premature delaminations and failures have been observed in many cases. A comprehensive study was recently defined to investigate overlay performance in collaboration with the West Virginia Department of …
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Development of Approximations for HSCT Wing Bending Material Weight using Response Surface Methodology
… weight function for wing bending material weight of a High Speed Civil Transport (HSCT) is described. The weight function is based on HSCT configuration parameters. A response surface methodology is used to fit a quadratic polynomial to data gathered from a large number of structural …
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Polyurea aerogels: From nanoscopic to macroscopic properties
"The morphology of a material is intrinsically a qualitative property and in order to relate nanomorphology to synthetic conditions, it is necessary to express nano/micro-structure quantitatively. In this context, polyurea aerogels were chosen as a model system with demonstrated potential for rich …
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Experimental and Numerical Investigation of Tool Heating During Friction Stir Welding
… investigated for friction stir welding (FSW) of aluminum alloy AL 7075-T7351 over a wide range of process operating parameters using a combined experimental/numerical approach. In a statistical Design of Experiments fashion, 54 experimental welds (bead-on-plate) were performed at 27 different …
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Statistical Investigation of Friction Stir Processing Parameter Relationships
… understanding is still inadequate. Knowledge of FSW parameter relationships is needed to better understand the process and implement proper machine control. This study utilized a 3-factor, 3-level factorial design of experiments to investigate relationships between key process inputs and …
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Reducing cycle times in rotational moulding of plastics: a theoretical and experimental analysis
Rotational moulding is one of the fastest growing sectors of the plastics processing industry today. Yet, in spite of the advantages which it has to offer in terms of the economic production of quite complex, stress-free articles, its competitiveness and widespread growth is still hampered by long …
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Manufacture of cellular solids using natural fibre reinforced composites
This thesis explains the manufacturing of recyclable, eco-friendly composites and their fabrication into hollow cores. The composites have been manufactured using compression moulding and extrusion techniques; each representing batch manufacturing and continuous manufacturing respectively. A …
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A Hybrid Tabu/Scatter Search Algorithm for Simulation-Based Optimization of Multi-Objective Runway Operations Scheduling
… and economic requirements. Since runways are often the primary limiting factor in airport capacity, runway operations scheduling emerge as an important problem to be solved to alleviate flight delays and air traffic congestion while reducing unnecessary fuel consumption and negative …
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Influence of Electrostatic Interactions and Hydrogen Bonding on the Thermal and Mechanical Properties of Step-Growth Polymers
… research efforts have focused on the synthesis of novel, segmented, cross-linked networks and thermoplastics for emerging technologies. Tailoring macromolecular structures for improved mechanical performance can be accomplished through a variety of synthetic strategies using step-growth …
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Hydrothermal synthesis and optimisation of zeolite Na-P1 from South African coal fly ash
Millions of tonnes of fly ash are generated worldwide every year to satisfy the large demand for energy. Management of this fly ash has been a concern and various approaches for its beneficial use have been investigated. Over the last two decades, there has been intensive research internationally …