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dc.contributor.supervisor Popplewell, Neil (MECHANICAL ENGINEERING) Bai, Hao (MECHANICAL ENGINEERING) en_US
dc.contributor.author ADEOGUN, KAZEEM
dc.date.accessioned 2013-01-04T15:39:23Z
dc.date.available 2013-01-04T15:39:23Z
dc.date.issued 2013-01-04
dc.identifier.uri http://hdl.handle.net/1993/14398
dc.description.abstract The removal of the effect of imperfect dynamic properties of ultrasonic transducers and associated electronics, as well as the couplant to a structure, from experimental data is presented. The investigation reveals that it is unnecessary for the instrumentation to have an ideal frequency response function for a transducer because imperfect measurement behaviour can be removed with post processing. A computer simulation of a homogeneous, isotropic pipe’s radial displacement is shown to agree closely with a corresponding measurement if a reasonably accurate frequency response function of the measurement chain is incorporated. A procedure to extract the cut-off frequencies of an unblemished pipe and the singularity frequencies of a notched pipe is developed. Frequency differences between the cut-off frequencies and the nearest frequencies of singularities introduced by a circumferential notch are investigated. It is confirmed experimentally that singularities are introduced by a notch and differences are measurable at a 95% confidence level. en_US
dc.rights info:eu-repo/semantics/openAccess
dc.subject ULTRASONIC en_US
dc.title ULTRASONIC SIMULATION AND MEASUREMENTS WITH CUT-OFF FREQUENCY EXTRACTIONS en_US
dc.type info:eu-repo/semantics/masterThesis
dc.type master thesis en_US
dc.degree.discipline Mechanical and Manufacturing Engineering en_US
dc.contributor.examiningcommittee Birouk, Madjid (MECHANICAL ENGINEERING) Shalaby, Ahmed (CIVIL ENGINEERING) en_US
dc.degree.level Master of Science (M.Sc.) en_US
dc.description.note February 2013 en_US


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