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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 36 for “"Accelerated Corrosion"”.
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Incorporating flow-accelerated corrosion effects into probabilistic risk assessment
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Nuclear Engineering, 1998.
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Power plant degradation : a modular secondary plant and integral flow accelerated corrosion model
Flow Accelerated Corrosion (FAC) is the most prevalent material degradation mechanism for low carbon steel in steam-water flow systems. The band of uncertainty in predictions of wear rate due to FAC spans one to two orders of magnitude. Such a wide range of uncertainty inhibits the ability to …
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Corrosion Behavior of ASTM A1010 Stainless Steel for Applications in Bridge Components
… of this research was the investigation of the corrosion behavior of a low chromium-content stainless steel, ASTM A1010, for use in steel bridge members. This stainless steel has been marketed as a potential replacement for conventional structural steels for bridges located in highly-corrosive …
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Damage of concrete with epoxy coated reinforcement due to corrosion, freeze-thaw and fatigue with application to bridge decks
… of reinforced concrete bridge decks due to corrosion of the steel bars is a common problem. Epoxy coated reinforcement (ECR) is known to perform better than plain (black) steel, but the appropriate maintenance schedule for ECR bridge decks is not well established. The goal of this project …
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Residual strength of corroded reinforced concrete beams.
Currently, much research is focused on the corrosion of reinforcement in concrete members. However, none addresses the problems associated with the residual strength of reinforced concrete beams exhibiting both main and shear reinforcement corrosion simultaneously. The aim of this research, …
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Residual Engineering Properties of Corroded Conventional Steel, High Chromium Steel and Stainless Steel Reinforcing bars in Concrete
Corrosion can be a major concern in term of durability and the safety of the reinforced concrete structures. However, there are no relations specified by codes and standards to evaluate the reduction in the engineering properties of corroded steel rebar. This work presents the findings of the …
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Alternative Methods for Sealing Overlapping Steel Members with Narrow Gaps During Galvanizing
… the seal-weld to prevent fluid penetration; an accelerated corrosion test was performed to determine the long-term corrosion resistance of each configuration; and a coating layer evaluation was performed to investigate the bond of the metallurgical layer between the steel and the coating. …
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Shear Strength Assessment of Corrosion-Damaged Prestressed Concrete Girders Repaired With CFRP
Corrosion on bridges is a common issue since it can be caused by multiple agents such as marine environments or deicing chemicals. The damages caused by these agents, if left unmitigated, may lead to failure of the superstructures. If corrosion is present in the end regions of the beams, failure of …
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Corrosion of high-chromium and conventional steels embedded in concrete
Corrosion of steel in concrete structures sometimes led to the unexpected failure of the concrete bridges in United States before their intended service life. High-chromium steel has been developed as a replacement for conventional steel in concrete because it may have a capability to retard the …
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Surface Orientation Dependent Corrosion Damage and Temperature Dependent Mechanical Property Degradation of Sensitized AA5083-H116 Alloys
… changes of 5083-H116 to its resulting corrosion resistance and mechanical performance. Alcoa 5083-H116 was sensitized in an environmental chamber at 100°C for up to ~1500 hours and 150°C up to ~2000 hours, revealing different degrees of sensitization based on exposure times. …
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Electrochemical study of corrosion phenomena in zirconium alloys
Shadow corrosion of zirconium alloy fuel cladding in BWR environments, the phenomenon in which accelerated corrosion is experienced when the cladding surface is in close proximity to other metals, has become a potentially life-limiting issue for BWR fuel. Recent results from experimentation at MIT, …
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Effects of structural repair and strengthening on stiffness and ultimate capacity of corrosion-damaged RC beams
… cause of structural damage in RC structures is corrosion of reinforcement. Therefore there is a need to understand the effects of corrosion damage on the structural properties of RC members such as stiffness and ultimate capacity in order to develop improved and effective repair strategies that …
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Functionalization of nanoclays through exchange reactions
… based ionic liquids (ILs) and a commercial corrosion inhibitor. Clay modification was examined by TGA, FTLR and WXRD. The cationic clay modified with both ILs had similar thermal stabilities since they contained the same cation although the original anions were different. The thermal …
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Characterisation of Potential Replacements for Nickel Compounds used in Decorative Chromium Plating
… terms of the appearance, surface topography and corrosion resistance by using spectrophotometry, scanning electron microscopy (SEM), atomic force microscopy (AFM), linear polarisation, electrochemical impedance spectroscopy (EIS) and accelerated corrosion salt spray methods. Spectrophotometry …
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Testing of the Transverse Tendon Behavior in the Varina-Enon Bridge
… in some segmental concrete bridges is the corrosion of the post-tensioned strands. A tendon failure can be detrimental to service level bridge performance and reduce the flexural strength. The Varina-Enon Bridge has a history of corrosion related issues and the objective of this project was …
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Microstructure and precipitation effects in inconel alloy 600.
… of material degradation, namely, intergranular corrosion. A range of carbide precipitation 'C-curves' have been established and related to thermal and mechanical processing. Accelerated corrosion testing has provided an insight into the relationship between precipitation and structure on the …
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Incorporation of Corrosion Mechanisms into a State-dependent Probabilistic Risk Assessment
… which steam generator tubes degraded by stress corrosion cracking rupture due to depressurization following a steam line break resulting from flow-accelerated corrosion. This study was performed by developing a state-dependent risk model. The model has the capability of using traditional PRA …
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Long-Term Performance of Seismically Rehabilitated Corrosion -Damaged Columns
… using ACM to restore the structural capacity of corrosion-damaged reinforced concrete columns with lap-spliced reinforcement and subjected to lateral loading needs to be addressed. In order to simulate environmental conditions, circular reinforced concrete columns (500 mm in diameter and 3000 mm …
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Practical Impacts of Galvanic Corrosion in Water Service Lines and Premise Plumbing
… between dissimilar metals results in the accelerated corrosion of the less noble metal via galvanic attack, increasing metal concentrations in water and posing potential public health risks. Many practical problems associated with stopping galvanic attack between copper:galvanized iron and …
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Corrosion Behavior of Potential Structural Materials for use in Nitrate Salts Based Solar Thermal Power Plants
… reliability. This study investigates the corrosion behavior of structural alloys and electrochemical testing in molten nitrate salts at three temperatures common to CSP plants. Corrosion behavior was evaluated using gravimetric and inductively-coupled plasma optical emission spectroscopy …
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