Thermoelastic control of adaptive composites for aerospace applications using embedded nitinol actuators

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dc.contributor.authorLenahan, Kristie M.en
dc.contributor.departmentElectrical Engineeringen
dc.date.accessioned2014-03-14T21:46:40Zen
dc.date.adate2008-10-01en
dc.date.available2014-03-14T21:46:40Zen
dc.date.issued1996-05-05en
dc.date.rdate2008-10-01en
dc.date.sdate2008-10-01en
dc.description.abstractAerospace structures have stringent pointing and shape control requirements during long-term exposure to a hostile environment with no scheduled maintenance. This makes them excellent candidates for a smart structures approach as current passive techniques prove insufficient. This study investigates the feasibility of providing autonomous dimensional control to aerospace structures by embedding shape memory alloy elements inside composite structures. Increasing volume fractions of nitinol wire were embedded in cross-ply graphite/ epoxy composite panels. The potential of this approach was evaluated by measuring the change in longitudinal strain with increasing temperature and volume fraction. Reduction of thermal expansion is demonstrated and related to embedded volume fraction. Classical lamination theory is used to formulate a two-dimensional model which included the adaptive properties of the embedded nitinol. The model was used to predict the increased modulus and reduction of thermal strain in the modified plates which was verified by the experimental data.en
dc.description.degreeMaster of Scienceen
dc.format.extentvii, 48 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-10012008-063036en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-10012008-063036/en
dc.identifier.urihttp://hdl.handle.net/10919/44955en
dc.language.isoenen
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V855_1996.L463.pdfen
dc.relation.isformatofOCLC# 35160668en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectaerospace structuresen
dc.subjectshape memory alloy elementsen
dc.subject.lccLD5655.V855 1996.L463en
dc.titleThermoelastic control of adaptive composites for aerospace applications using embedded nitinol actuatorsen
dc.typeThesisen
dc.type.dcmitypeTexten
thesis.degree.disciplineElectrical Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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