Optimization studies on pzt ceramics for piezoelectric transformer application

Perdahcıoğlu, Emin Semih


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In this thesis, numerical and experimental design of a multi-frequency underwater acoustic transducer with cylindrical piezoelectric ceramic tubes is studied. In the numerical design, the acoustic, mechanical and thermal performances of the transducer are investigated by means of finite element method (FEM) in ANSYS. The design of the transducer that meets the acoustic requirements is checked in terms of the mechanical and thermal performances. After the completion of the numerical design, the transducer is...
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The qualification of large testing facilities serving in earthquake engineering research and the management of the instrumentation are the central issues of this paper. The main aspects of instrumentation management and seismic test methods are presented, commented upon and critically assessed based on both the answers to a questionnaire and the outcomes of the SERIES Workshop about the Qualification of Facilities held in Ohrid, MK. On the basis of the results presented herein and the proposals and comments...
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The cross section for coherent photoproduction accompanied by at least one neutron on one side of the interaction point and no neutron activity on the other side, , is measured with the CMS experiment in ultra-peripheral PbPb collisions at . The analysis is based on a data sample corresponding to an integrated luminosity of 159, collected during the 2011 PbPb run. The mesons are reconstructed in the dimuon decay channel, while neutrons are detected using zero degree calorimeters. The measured cross section ...
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Relatively simple and efficient micromechanical models are used to obtain the uniaxial response of SCS-6/Timetal 21S with [0](4) and [0/90](s) laminates when subjected to isothermal and thermomechanical fatigue (TMF) loadings. Features of the modeling that are required to obtain the accurate deformation behavior for this class of materials under these loadings are highlighted. To this end, a comparison is made between the concentric cylinder model and the uniaxial stress model for representing the [0] lamin...
Citation Formats
E. S. Perdahcıoğlu, “Optimization studies on pzt ceramics for piezoelectric transformer application,” M.S. - Master of Science, Middle East Technical University, 2003.