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Understanding Ferroelastic Domain Reorientation as a Damping Mechanism in Ferroelectric Reinforced Metal Matrix Composites

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dc.contributor.authorPoquette, Ben Daviden
dc.contributor.committeechairKampe, Stephen L.en
dc.contributor.committeememberAning, Alexander O.en
dc.contributor.committeememberSchultz, Jeffery P.en
dc.contributor.committeememberCorcoran, Sean G.en
dc.contributor.committeememberPickrell, Gary R.en
dc.contributor.committeememberReynolds, William T. Jr.en
dc.contributor.departmentMaterials Science and Engineeringen
dc.date.accessioned2014-03-14T20:17:00Zen
dc.date.adate2007-10-09en
dc.date.available2014-03-14T20:17:00Zen
dc.date.issued2007-09-25en
dc.date.rdate2007-10-09en
dc.date.sdate2007-10-02en
dc.description.abstractFerroelectric-reinforced metal matrix composites (FR-MMCs) offer the potential to improve damping characteristics of structural materials. Many structural materials are valued based on their stiffness and strength; however, stiff materials typically have limited inherent ability to dampen mechanical or acoustic vibrations. The addition of ferroelectric ceramic particles may also augment the strength of the matrix, creating a multifunctional composite. The damping behavior of two FR-MMC systems has been examined. One involved the incorporation of barium titanate (BaTiO3) particles into a Cu- 10w%Sn (bearing bronze) matrix and the other incorporating them into an electroformed Ni matrix. Here the damping properties of the resulting ferroelectric reinforced metal matrix composites (FR-MMCs) have been investigated versus frequency, temperature (above and below the Curie temperature of the reinforcement), and number of strain cycles. FR-MMCs currently represent a material system capable of exhibiting increased damping ability, as compared to the structural metal matrix alone. Dynamic mechanical analysis and neutron diffraction have shown that much of this added damping ability can be attributed to the ferroelectric/ferroelastic nature of the reinforcement.en
dc.description.degreePh. D.en
dc.identifier.otheretd-10022007-124455en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-10022007-124455/en
dc.identifier.urihttp://hdl.handle.net/10919/29169en
dc.publisherVirginia Techen
dc.relation.haspartDissertation_Final_10-4-07.pdfen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectDispersion Strengtheningen
dc.subjectElectroformingen
dc.subjectElectrodepositionen
dc.subjectElectroless Platingen
dc.subjectMetal Matrix Compositesen
dc.subjectDampingen
dc.subjectFerroelectricen
dc.subjectFerroelasticen
dc.subjectTwinningen
dc.titleUnderstanding Ferroelastic Domain Reorientation as a Damping Mechanism in Ferroelectric Reinforced Metal Matrix Compositesen
dc.typeDissertationen
thesis.degree.disciplineMaterials Science and Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.leveldoctoralen
thesis.degree.namePh. D.en

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