AN INVESTIGATION OF CONCENTRATED AND DISTRIBUTED STRAIN INDUCING CONSTRAINTS FOR TRAINING SHAPE MEMORY ALLOYS

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dc.contributor.advisorFlatau, Alisonen_US
dc.contributor.authorParent, Pauline M.en_US
dc.contributor.departmentAerospace Engineeringen_US
dc.contributor.publisherDigital Repository at the University of Marylanden_US
dc.contributor.publisherUniversity of Maryland (College Park, Md.)en_US
dc.date.accessioned2013-04-04T05:40:13Z
dc.date.available2013-04-04T05:40:13Z
dc.date.issued2012en_US
dc.description.abstractThis research explores concentrated and distributed strain inducing constraints for Two Way Shape Memory (TWSM) training of cantilevered NiTiNOL shape memory alloy strips via the constrained thermal cycling of deformed Martensite training method. The goal is to evaluate the performance of a tip-moment trained sample actuator, which is characterized by constant strain along the sample length, and compare it with the performance of tip-force trained sample actuators, which have root concentrated strain. The shape and net tip displacement of trained specimens is expected to vary with training constraint type and training load magnitude, rendering it uncertain which sample will have greater work potential. A training structure and systems for introducing thermal and mechanical loads were developed to provide the explored training constraints and induce TWSM. The work performance was evaluated by measuring vertical displacement of tip weights. The experimental results indicate that samples subject to strain distributing constraints during training have higher work potential than samples subject to concentrated strain inducing constraints.en_US
dc.identifier.urihttp://hdl.handle.net/1903/13825
dc.subject.pqcontrolledAerospace engineeringen_US
dc.subject.pqcontrolledMechanicsen_US
dc.subject.pqcontrolledMaterials Scienceen_US
dc.subject.pquncontrolledNitinolen_US
dc.subject.pquncontrolledOWSMen_US
dc.subject.pquncontrolledShape Memory Alloyen_US
dc.subject.pquncontrolledShape Memory Effecten_US
dc.subject.pquncontrolledSMAen_US
dc.subject.pquncontrolledTWSMen_US
dc.titleAN INVESTIGATION OF CONCENTRATED AND DISTRIBUTED STRAIN INDUCING CONSTRAINTS FOR TRAINING SHAPE MEMORY ALLOYSen_US
dc.typeThesisen_US

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