Mechanical properties of heat-treated and hot-dip galvanized rectangular hollow section material

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dc.contributor.authorMa, Zhengyuan
dc.contributor.supervisorSun, Min
dc.date.accessioned2018-12-15T00:32:05Z
dc.date.available2018-12-15T00:32:05Z
dc.date.copyright2018en_US
dc.date.issued2018-12-14
dc.degree.departmentDepartment of Civil Engineeringen_US
dc.degree.levelMaster of Applied Science M.A.Sc.en_US
dc.description.abstractHot-dip galvanizing is widely used for corrosion protection of steel structures. However, there has been a plethora of recent reports on premature cracking in galvanized steel structures, which have resulted in some early decommissions or even hazardous collapses. This research focuses on cold-formed Rectangular Hollow Sections (RHS). A total of 108 tensile coupons were tested to investigate the effects of galvanizing as well as different pre-galvanizing treatments on the material properties around the cross sections of the specimens. For the first time, this thesis reports a comprehensive measurement of residual stresses in different directions at the member ends which are directly relevant to the cracking issue. The results were also compared to the residual stresses far away from the member ends, which are relevant to structural stability research. In all, the research provides a better understanding of the characteristics and structural performance of galvanized RHS to facilitate its application. The recommendations can help engineers, fabricators, and galvanizers mitigate the risk of cracking in RHS during galvanizing.en_US
dc.description.scholarlevelGraduateen_US
dc.identifier.urihttp://hdl.handle.net/1828/10411
dc.languageEnglisheng
dc.language.isoenen_US
dc.rightsAvailable to the World Wide Weben_US
dc.subjectmechanical propertiesen_US
dc.subjectrectangular hollow sectionen_US
dc.subjectsteelen_US
dc.subjectheat-treatmenten_US
dc.titleMechanical properties of heat-treated and hot-dip galvanized rectangular hollow section materialen_US
dc.typeThesisen_US

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