Fracture Behavior Characterization of Conventional and High Performance Steel for Bridge Applications

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dc.contributor.authorCollins, William Norfleeten
dc.contributor.committeechairLeon, Roberto T.en
dc.contributor.committeechairWright, William J.en
dc.contributor.committeememberCousins, Thomas E.en
dc.contributor.committeememberWeyers, Richard E.en
dc.contributor.committeememberDowling, Norman E.en
dc.contributor.departmentCivil and Environmental Engineeringen
dc.date.accessioned2016-05-07T06:00:17Zen
dc.date.available2016-05-07T06:00:17Zen
dc.date.issued2014-11-13en
dc.description.abstractThe work described herein examines the fracture behavior of steels used in bridge applications. As part of Transportation Pooled Fund (TPF) Project 5-238, Design and Fabrication Standards to Eliminate Fracture Critical Concerns in Steel Members Traditionally Classified as Fracture Critical, researchers aim to take advantage of advances made in both steel production technology and in the field of fracture mechanics. Testing and analysis of both conventional and High Performance Steel (HPS) grades of bridge steel was conducted as part of this study. This includes both Charpy V-Notch testing, as well as more rigorous elastic-plastic fracture toughness testing. Analysis includes the application of the master curve methodology to statistically characterize fracture behavior in the ductile to brittle transition region. In addition, a database of historic bridge fracture toughness data was compiled and re-analyzed using plasticity corrections to estimate elastic-plastic fracture toughness. Correlations between Charpy V-Notch impact energy and fracture toughness, which forms the basis for the current material specification, were also examined. Application of fracture toughness characterization of both new and historic data results in updated methodologies for addressing fracture in bridge design.en
dc.description.degreePh. D.en
dc.format.mediumETDen
dc.identifier.othervt_gsexam:3744en
dc.identifier.urihttp://hdl.handle.net/10919/70925en
dc.publisherVirginia Techen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectBrittle failuresen
dc.subjectmaterial failuresen
dc.subjectcrackingen
dc.subjecttoughnessen
dc.subjectsteelen
dc.subjectbridgesen
dc.subjectfractureen
dc.titleFracture Behavior Characterization of Conventional and High Performance Steel for Bridge Applicationsen
dc.typeDissertationen
thesis.degree.disciplineCivil Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.leveldoctoralen
thesis.degree.namePh. D.en

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