Evaluation Of Fastening Strategies For Reducing Galvanic Corrosion Damage In Aluminum Structures Containing Dissimilar Metals

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dc.contributor.advisorHihara, Lloyd H.
dc.contributor.authorSmith, Cody
dc.contributor.departmentMechanical Engineering
dc.date.accessioned2023-02-23T23:56:47Z
dc.date.available2023-02-23T23:56:47Z
dc.date.issued2022
dc.description.abstractFor equipment operating in a marine environment, corrosion is a major issue. Corrosion causes equipment failures and equipment down time. The deck of an ocean-going vessel experiences multiple wetting and drying cycles from saltwater causing an extremely corrosive environment. The impetus behind this research was to develop fastening strategies that would reduce the corrosion damage suffered by equipment operated on Naval range support vessels. The fasteners used to join aluminum components created a dissimilar metal couple which is a known source of corrosion damage. Prospective fastener replacements of titanium, TiN coated stainless steel, CrN coated stainless steel, and sol-gel coated stainless steel were tested for their corrosion reduction properties using in lab polarization tests and environmental exposure samples. Overall, the only fastener replacement to show consistent corrosion reduction in the aluminum substrate were the titanium fasteners. The coated fasteners produced a highly variable aluminum corrosion rate, and in most cases, the aluminum corrosion rate was greater than the stainless steel control fastener.
dc.description.degreeM.S.
dc.identifier.urihttps://hdl.handle.net/10125/104609
dc.languageeng
dc.publisherUniversity of Hawaii at Manoa
dc.subjectMechanical engineering
dc.subjectAluminum
dc.subjectCorrosion
dc.subjectGalvanic
dc.subjectStainless steel
dc.titleEvaluation Of Fastening Strategies For Reducing Galvanic Corrosion Damage In Aluminum Structures Containing Dissimilar Metals
dc.typeThesis
dc.type.dcmiText
local.identifier.alturihttp://dissertations.umi.com/hawii:11542

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