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dc.contributor.advisorNeal, Steven P.eng
dc.contributor.authorRinker, Brett A., 1976-eng
dc.date.issued2006eng
dc.date.submitted2006 Springeng
dc.descriptionThe entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file.eng
dc.descriptionTitle from title screen of research.pdf file (viewed on April 17, 2009)eng
dc.descriptionVita.eng
dc.descriptionIncludes bibliographical references.eng
dc.descriptionThesis (M.S.) University of Missouri-Columbia 2006.eng
dc.descriptionDissertations, Academic -- University of Missouri--Columbia -- Mechanical and aerospace engineering.eng
dc.description.abstractIn ultrasonic nondestructive evaluation, acoustic waves are used to inspect and characterize materials. Two commonly measured parameters are material thickness and acoustic wave speed in the material. These parameters are related through the common relationship speed equals distance divided by time. The simultaneous wave speed and thickness estimation problem arises when neither the wave speed nor thickness (propagation distance) is known. This thesis presents the initial research completed to evaluate a new solution to the simultaneous acoustic wave speed and thickness estimation problem for isotropic materials of plate-type geometry. The approach is unique in that it is implemented using one single-element transducer with only single-sided access to the material. Models are developed which show that the problem can be solved by introducing a second equation related to field perturbation. The approach is implemented using non-classical ultrasonic measurements (made with existing equipment) along with original analysis software based on the model development. Experimental results are presented in time and frequency, for metallic and non-metallic materials, and for a layered geometry. Results show that wave speed and thickness estimates determined using the new approach compare favorably with classical estimates.eng
dc.identifier.merlinb66788225eng
dc.identifier.oclc318654837eng
dc.identifier.urihttps://hdl.handle.net/10355/4585
dc.identifier.urihttps://doi.org/10.32469/10355/4585eng
dc.languageEnglisheng
dc.publisherUniversity of Missouri--Columbiaeng
dc.relation.ispartofcommunityUniversity of Missouri--Columbia. Graduate School. Theses and Dissertationseng
dc.subject.lcshAcoustic surface waveseng
dc.subject.lcshThickness measurement -- Estimateseng
dc.subject.lcshAcoustical engineeringeng
dc.titleA single-sided access simultaneous solution of acoustic wave speed and sample thickness for isotropic materials of plate-type geometryeng
dc.typeThesiseng
thesis.degree.disciplineMechanical and aerospace engineering (MU)eng
thesis.degree.grantorUniversity of Missouri--Columbiaeng
thesis.degree.levelMasterseng
thesis.degree.nameM.S.eng


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