DEVELOPMENT OF COST EFFECTIVE NANOSTRUCTURAL REINFORCEMENTS FOR ADVANCED COMPOSITES

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dc.contributor.advisorRobles Hernandez, Francisco C.
dc.contributor.committeeMemberEl Nahas, Medhat
dc.contributor.committeeMemberIgnatiev, Alex
dc.creatorOkonkwo, Anderson O.
dc.date.accessioned2015-01-06T17:28:43Z
dc.date.available2015-01-06T17:28:43Z
dc.date.createdAugust 2014
dc.date.issued2014-08
dc.date.updated2015-01-06T17:28:43Z
dc.description.abstractThe purpose of this work is to develop cost effective structural composites reinforced with complex carbon nanostructures for multiple applications. The main process in this study is mechanical milling which induce the in-situ transformation of carbon in the form of soot into complex nanostructures that behave as effective reinforcements. The soot mainly composed of amorphous particles with a high density of defects having a majority of sp2 bonding. During mechanical milling, this soot transforms in-situ into diamond, graphene and graphitic carbon. Milling media have two fundamental roles: welding and fracturing. A further contribution of milling in metal contamination is in some cases welcomed due to the presence of transition metals (e.g. Fe) with catalytic nature that sponsor further in-situ synthesis of carbon nanoreinforcements during sintering. The in-situ synthesized nanoreinforcements have demonstrated to be effective in improving mechanical properties in composites with various matrices including: ceramics, metallic and polymer (bio, organic and inorganic). Further, in this work is presented a novel sintering method involving induction heating at a high and low temperature. The induction sintering is pressure less. Novel processing technologies were demonstrated through the mechanical and characterization test results. In this study, we innovated a sintering process where induction heating is used and compared to Spark Plasma Sintering (SPS). The results will be supported by mechanical testing and characterization by means of x-ray diffraction, Raman spectroscopy, x-ray photoelectron spectroscopy, scanning and transmission electron microscopy.
dc.description.departmentEngineering Technology, Department of
dc.format.digitalOriginborn digital
dc.format.mimetypeapplication/pdf
dc.identifier.urihttp://hdl.handle.net/10657/875
dc.language.isoeng
dc.rightsThe author of this work is the copyright owner. UH Libraries and the Texas Digital Library have their permission to store and provide access to this work. Further transmission, reproduction, or presentation of this work is prohibited except with permission of the author(s).
dc.subjectGraphene
dc.subjectGraphite
dc.subjectNano diamond
dc.subjectNanocomposites
dc.subjectNanostructures
dc.subjectSintering
dc.subject.lcshEngineering
dc.titleDEVELOPMENT OF COST EFFECTIVE NANOSTRUCTURAL REINFORCEMENTS FOR ADVANCED COMPOSITES
dc.type.dcmiText
dc.type.genreThesis
thesis.degree.collegeCollege of Technology
thesis.degree.departmentEngineering Technology, Department of
thesis.degree.disciplineEngineering Technology
thesis.degree.grantorUniversity of Houston
thesis.degree.levelMasters
thesis.degree.nameMaster of Science

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