Academic thesis

Niklas Underwood: Tomographic evaluation of ultrasonic travel time data as a non-destructive technique for testing object made of Carrara marble Back
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Overview:  
Abstract: The measurement of ultrasonic velocity is a common technique for non-destructive testing of cultural heritage made of Carrara marble. Its state of preservation can be determined due to slower ultrasonic velocities in weathered areas of the marble. An improvement of these method is the tomographic evaluation of ultrasonic travel time data. The tomographic image shows a distribution of the ultrasonic velocity within the marble and enables the localisation of damaged areas. This thesis pre-sents tomographic images with high resolution and how the image can be im-proved with the purpose to localise even small inhomogeneous zones. Travel time measurements on specimens of Carrara marble are carried out by using an auto-mated process. Furthermore it is shown how the quality of tomographic images can be checked and improved.

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Keywords: non-destructive testing, ultrasonic, tomography, Carrara marble, ReflexW
Details:
  • academic institution: Fachhochschule Potsdam
  • kind of theses:  Masterarbeit
  • main Tutor:  Dr. Peter Kozub
  • assistant Tutor:  Dr. Stefan Maack
  • date:  2014
  • Language:  German
  • pages:  106
  • pictures:  70
 
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Creative Commons Lizenzvertrag This work is licensed under a Creative Commons BY-NC-ND 3.0 Germany License.
DOI (Digital Object Identifier) 10.5165/hawk-hhg/492
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