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dc.contributor.advisorFleishcman, Robert
dc.contributor.authorMoya, Joseph
dc.creatorMoya, Joseph
dc.date.accessioned2020-11-26T02:20:25Z
dc.date.available2020-11-26T02:20:25Z
dc.date.issued2020
dc.identifier.citationMoya, Joseph. (2020). Analytical and Experimental Study on the Effect of Discontinuities on Cast Steel Component Performance (Master's thesis, University of Arizona, Tucson, USA).
dc.identifier.urihttp://hdl.handle.net/10150/648639
dc.description.abstractAn experimental and analytical study is performed to investigate the effect of different discontinuities on the yield strength, ultimate strength and ductility of steel cast components. Steel plates containing various discontinuities were cast in sand molds, cut to size, and tested in monotonic tension to fracture. Radiographic imaging was used to identify, classify, and rate discontinuities. Three different types of discontinuity and three different ASTM 2868 indication levels were tested. The discontinuities varied in size from 0.46 percent to 9.09 percent of the average gross-section area of the specimens. Specimens rated Level 2 or lower tended to fracture at the minimum section, not at the discontinuity. Specimens with Level 5 indications tended to fracture at the discontinuity. Specimens that fractured at the discontinuity had reduced ductile capacity. Elongation was reduced by Level 5 indications by between 45.7 to 70.0 percent. Ductile fracture predictive models were used in finite-element analysis to predict component performance. Models used color data from radiography for discontinuity size. Good agreement is obtained between experimental and predicted elongation at fracture. The analytical modeling methods used in this thesis allow for accessible prediction of ductile capacity of a cast component.
dc.language.isoen
dc.publisherThe University of Arizona.
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction, presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
dc.subjectCast Steel
dc.subjectFinite elements
dc.subjectFracture Prediction
dc.subjectMaterial discontinuity
dc.titleAnalytical and Experimental Study on the Effect of Discontinuities on Cast Steel Component Performance
dc.typetext
dc.typeElectronic Thesis
thesis.degree.grantorUniversity of Arizona
thesis.degree.levelmasters
dc.contributor.committeememberJo, Hongki
dc.contributor.committeememberKundu, Tribikram
thesis.degree.disciplineGraduate College
thesis.degree.disciplineCivil Engineering & Engineering Mechanics
thesis.degree.nameM.S.
refterms.dateFOA2020-11-26T02:20:25Z


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