Blar i forfatter Doktorgradsavhandlinger (NT-fak) "Skjelvareid, Martin Hansen"
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Synthetic aperture ultrasound imaging with application to interior pipe inspection
Skjelvareid, Martin Hansen (Doctoral thesis; Doktorgradsavhandling, 2012-09-07)This thesis is concerned with synthetic aperture focusing of ultrasonic pulse-echo measurements, with application to multilayered media and cylindrical structures. The work is motivated by the need for accurate methods for non-destructive testing of pipelines, particularly water distribution pipelines. By improving the lateral resolution in ultrasonic measurements, the synthetic aperture algorithms ...