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dc.contributor.advisorJ. Kenneth Salisbury, Jr.en_US
dc.contributor.authorAnthony, Brian W., 1972-en_US
dc.date.accessioned2009-12-10T19:07:46Z
dc.date.available2009-12-10T19:07:46Z
dc.date.copyright1998en_US
dc.date.issued1998en_US
dc.identifier.urihttp://hdl.handle.net/1721.1/50067
dc.descriptionThesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1998.en_US
dc.descriptionIncludes bibliographical references (p. 60).en_US
dc.description.abstractAcoustic Non-Destructive Testing (NDT) has a long history of applications in fatigue monitoring, fault testing, and more recently production control. A very large family of manufactured and raw materials consist of thin layers. Some examples include rolled aluminum, window glass, plywood, automobile bodies, plane wings, silicon wafers, bridge support beams, and paper. These layers can be viewed and modeled as acoustic waveguides. This thesis will present the framework in which to analyze such layers. To this end, analytic solutions to the plane wave displacement and stress fields in a single layer monoclinic material will be presented The propagation, frequency, and dispersive characteristics of transmitted signals can be analyzed to determine various elastic properties of the layer or to identify faults. Wavelet (time-frequency), Fourier (frequency), and signal matching (time) techniques will be developed to analyze and extract features and properties of signals. Several experimental examples will be presented.en_US
dc.format.extent60 p.en_US
dc.language.isoengen_US
dc.publisherMassachusetts Institute of Technologyen_US
dc.rightsM.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission.en_US
dc.rights.urihttp://dspace.mit.edu/handle/1721.1/7582en_US
dc.subjectMechanical Engineeringen_US
dc.titleAnisotropic wave guides-- propagation, focusing and dispersive phenomena with applications for non-destructive testing.en_US
dc.typeThesisen_US
dc.description.degreeS.M.en_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Mechanical Engineeringen_US
dc.identifier.oclc42971563en_US


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