Show simple item record

dc.contributor.advisorKwon, Young W.
dc.contributor.advisorPollak, Randall D.
dc.contributor.authorPalmos, Epameinondas
dc.date.accessioned2012-03-14T17:42:21Z
dc.date.available2012-03-14T17:42:21Z
dc.date.issued2009-09
dc.identifier.urihttp://hdl.handle.net/10945/4582
dc.description.abstractThe objective of this study is to model Lamb waves generation and sensing for application to crack identification in engineering structures. Three topics were analyzed numerically using multiphysics finite element analysis. Initially, different types of Lamb wave generation techniques were investigated. A comparison between modeling the sinusoidal application of horizontal force (or displacement) as input and modeling the piezoelectric response of an actuator subjected to sinusoidal voltage input was performed. Secondly, the effects of a crack (disbond) between a piezoelectric wafer and the structure were analyzed, both for the piezoelectric actuator that generates the waves and for the sensor that measures the response. Finally, the appropriate fidelity of modeling a structural crack was investigated. In particular, the use of contact elements was evaluated on their role in the accurate prediction of the wave scattering from cracks or defects inside the structure.en_US
dc.description.urihttp://archive.org/details/modelingoflambwa109454582
dc.format.extentxvi, 97 p. : ill. ;en_US
dc.publisherMonterey, California. Naval Postgraduate Schoolen_US
dc.subject.lcshMechanical engineeringen_US
dc.subject.lcshLamb wavesen_US
dc.subject.lcshModelingen_US
dc.titleModeling of Lamb waves and application to crack identificationen_US
dc.typeThesisen_US
dc.contributor.corporateNaval Postgraduate School (U.S.)
dc.description.serviceHellenic Navy author.en_US
dc.identifier.oclc463654069
etd.thesisdegree.nameM.S.en_US
etd.thesisdegree.levelMastersen_US
etd.thesisdegree.disciplineMechanical Engineer and Mechanical Engineeringen_US
etd.thesisdegree.grantorNaval Postgraduate Schoolen_US
etd.verifiednoen_US
dc.description.distributionstatementApproved for public release; distribution is unlimited.


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record