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Full-Text Articles in Engineering
Development Of A Management Guide For Concrete Bridge Decks In Utah, Tenli Waters Emery
Development Of A Management Guide For Concrete Bridge Decks In Utah, Tenli Waters Emery
Theses and Dissertations
The objectives of this research were to 1) investigate bridge deck condition assessment methods used in the field and laboratory, methods of managing bridge decks, and methods for estimating remaining bridge deck service life using computer models through a comprehensive literature review on these subjects; 2) collect and analyze field data from representative concrete bridge decks in Utah; and 3) develop a decision tree for concrete bridge deck management in Utah. As a result of the literature review performed for objective 1, a synthesis of existing information about condition assessment, bridge deck preservation and rehabilitation, bridge deck reconstruction, and estimating …
Nonlinear Dynamics Of Carbon Steel Corrosion Under Gamma Radiation, Youn Gyeong Shin
Nonlinear Dynamics Of Carbon Steel Corrosion Under Gamma Radiation, Youn Gyeong Shin
Electronic Thesis and Dissertation Repository
Corrosion of materials is still an unresolved problem affecting a multitude of industries. One of the grand challenges facing the corrosion community is the development of high-fidelity models for corrosion in actual service environments. The difficulties arise since corrosion involves transfer of metal atoms between the solid and solution phases thus making the system non-adiabatic. Interfacial transfer of atoms increases the chance of establishing systemic feedback between chemical reactions and transport processes, which results in chemical oscillation and periodic patterns on the corroding surfaces. These oscillating behavior in electrochemical measurements and pattern formation on corroding surfaces have been reported in …
Aqueous Redox Flow Batteries With Boron Doped Diamond As An Electrode., Alex M. Bates
Aqueous Redox Flow Batteries With Boron Doped Diamond As An Electrode., Alex M. Bates
Electronic Theses and Dissertations
As the interest and implementation of renewable energy accelerates, so does that of grid energy storage. It is widely believed that a cost-effective energy storage technology will bring about the proliferation of renewable energy. Redox flow battery (RFB) technology represents a promising solution to cost-effective grid energy storage. Compared to other technologies, RFBs have a long lifetime, high efficiency, are non-flammable, significantly reduce cost, and separately scale power and energy. The separation of power and energy enables increased energy capacity by simply adding electrolyte volume. Of the challenges facing RFB technology, one readily apparent is the cost of the active …
Simulation Of Oxygen Control Technology In Applications Of Liquid Lead And Lead– Bismuth Eutectic Systems For Mitigating Materials Corrosion Using The Lattice Boltzmann Method, Emad Pouryazdanpanah Kermani
Simulation Of Oxygen Control Technology In Applications Of Liquid Lead And Lead– Bismuth Eutectic Systems For Mitigating Materials Corrosion Using The Lattice Boltzmann Method, Emad Pouryazdanpanah Kermani
UNLV Theses, Dissertations, Professional Papers, and Capstones
This dissertation is a study of material corrosion, along with solving momentum, energy, and mass transport equations by using the Lattice Boltzmann method (LBM) for the mesoscale modeling of oxygen transfer in liquid metals within a non-isothermal domain. One of the main goals of the project, proposed by the U.S. Department of Energy (DOE), is to control and decrease the corrosion of materials, which are often a common problem in advanced nuclear reactors and accelerator driven systems (ADS). One of the most efficient ways to decrease the corrosion rate is to add oxygen to the coolant to create an oxide …
Rapid Cross-Section Imaging With Magnetic And Impedance Sensors For Grout Anomaly Detection In External Post-Tensioned Tendons, Hani Freij
USF Tampa Graduate Theses and Dissertations
Post-tensioned (PT) bridges have had severe corrosion issues with tendons that fail suddenly without prior notice. The corrosion of external post-tensioned tendons has been associated with grout deficiencies/anomalies from inadequate grouting. Deficiencies include voids, regions of chalky low strength grout, and regions where excessive water content or even free water is present. In those zones mechanical bonding of strand to the grout is degraded and, of more concern, the strand steel risks corrosion failure reducing the expected lifespan of the structure. As tendons are critical structural components, it is important to detect those deficiencies during inspection preferably by a cross …
Relating Surface Resistivity To Corrosion Of Rebar Embedded In Portland Cement Concrete, Luisa Alejandra Morales
Relating Surface Resistivity To Corrosion Of Rebar Embedded In Portland Cement Concrete, Luisa Alejandra Morales
Open Access Theses & Dissertations
Reinforced concrete is widely used as a construction material known for its durability and proficiency of withstanding large forces in severe environments. Despite that the majority of these structures result in long-term performance, there is still a large number of failures of reinforced concrete structures as a result in corrosion of the reinforcement and concrete degradation. It is critical to assess the state of the corroded structure to decide on whether maintaining or replacing the structure is needed. The objective of this study is to characterize a relationship between the steel reinforcement corrosion and the concrete's resistivity. It is widely …
Testing The Effectiveness Of Reflective "Cool" Pigments, Ashleigh Carpenter
Testing The Effectiveness Of Reflective "Cool" Pigments, Ashleigh Carpenter
Williams Honors College, Honors Research Projects
This project is an exploration of reflective "cooling" pigments used in coatings for the exterior of a structure in order to control the temperature inside. The pigments reflect sunlight to reduce the heating effect inside a structure. While the project will include the synthesis and testing of these pigments, the focus will be on the design and construction of an apparatus to test the effectiveness of these pigments. An apparatus will be constructed with a heat source and two structures of identical dimensions. The set-up will allow for the temperature of the inside of the structures to be recorded at …
Design, Microstructure And Properties Of Metastable Beta-Type Biomedical Titanium Alloys, Syed Faraz Jawed
Design, Microstructure And Properties Of Metastable Beta-Type Biomedical Titanium Alloys, Syed Faraz Jawed
Theses: Doctorates and Masters
Many existing implant biomaterials including cobalt-chromium alloy, stainless steel, Ti-6Al-4V and commercially pure titanium have all been shown to demonstrate mechanical incompatibility, poor osseointegration and/or cause cytotoxic effects on the human body after some years of application, leading to revision surgery in most cases. Consequently, there is an immediate need for an enduring biomaterial that displays good mechanical properties and possesses biocompatibility and corrosion resistance, in order to reduce rates of revision surgeries. In this PhD work, based on the 𝐵𝑜̅̅̅̅-𝑀𝑑̅̅̅̅̅, 𝑒/𝑎̅̅̅̅̅-𝛥𝑟̅̅̅ and BF-d-electron superelastic theoretical relationships four new series of quaternary Ti-25Nb-8Zr-xCr, Ti-25Nb-xSn-yCr, Ti26Nb-xMn-yZr and Ti-25Nb-xMn-ySn alloys have been …