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dc.contributor.advisorKundu, Tribikramen
dc.contributor.authorHafezi, Mohammad Hadi
dc.creatorHafezi, Mohammad Hadien
dc.date.accessioned2017-09-06T16:20:59Z
dc.date.available2017-09-06T16:20:59Z
dc.date.issued2017
dc.identifier.urihttp://hdl.handle.net/10150/625456
dc.description.abstractIn this dissertation, a novel fast modeling technique called peri-ultrasound that can model both linear and nonlinear ultrasonic behavior of materials is developed and implemented. Nonlinear ultrasonic response can detect even very small material non- linearity. Quantification of the material nonlinearity at the early stages of damage is important to avoid catastrophic failure and reduce repair costs. The developed model uses the nonlocal continuum-based peridynamic theory which was found to be a good simulation tool for handling crack propagation modeling, in particular when multiple cracks grow simultaneously. The developed peri-ultrasound modeling tool has been used to model the ultrasonic response at the interface of two materials in presence of an interface crack. Also, the stress wave propagation in a half-space (or half-plane for a 2-dimensional problem) with boundary loading is investigated using peri-ultrasound modeling. In another simulation, well-established two-dimensional Lamb's problem is investigated where the results are verified against available analytical solution. Also, the interaction between the surface wave and a surface breaking crack is studied.
dc.language.isoen_USen
dc.publisherThe University of Arizona.en
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 or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en
dc.subjectDamageen
dc.subjectFatigue Cracken
dc.subjectNonlocal Theoryen
dc.subjectPeridynamic Theoryen
dc.subjectPeri-ultrasound Modelingen
dc.subjectWave Propagationen
dc.titlePeridynamic Modeling and Extending the Concept to Peri-Ultrasound Modelingen_US
dc.typetexten
dc.typeElectronic Dissertationen
thesis.degree.grantorUniversity of Arizonaen
thesis.degree.leveldoctoralen
dc.contributor.committeememberKundu, Tribikramen
dc.contributor.committeememberBrio, Moyseyen
dc.contributor.committeememberAifantis, Katerina Een
dc.contributor.committeememberBanerjee, Souraven
dc.contributor.committeememberDao, Cac M.en
thesis.degree.disciplineGraduate Collegeen
thesis.degree.disciplineCivil Engineering and Engineering Mechanicsen
thesis.degree.namePh.D.en
refterms.dateFOA2018-07-18T01:14:41Z
html.description.abstractIn this dissertation, a novel fast modeling technique called peri-ultrasound that can model both linear and nonlinear ultrasonic behavior of materials is developed and implemented. Nonlinear ultrasonic response can detect even very small material non- linearity. Quantification of the material nonlinearity at the early stages of damage is important to avoid catastrophic failure and reduce repair costs. The developed model uses the nonlocal continuum-based peridynamic theory which was found to be a good simulation tool for handling crack propagation modeling, in particular when multiple cracks grow simultaneously. The developed peri-ultrasound modeling tool has been used to model the ultrasonic response at the interface of two materials in presence of an interface crack. Also, the stress wave propagation in a half-space (or half-plane for a 2-dimensional problem) with boundary loading is investigated using peri-ultrasound modeling. In another simulation, well-established two-dimensional Lamb's problem is investigated where the results are verified against available analytical solution. Also, the interaction between the surface wave and a surface breaking crack is studied.


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