Degree Type
Thesis
Date of Award
1989
Degree Name
Master of Science
Department
Aerospace Engineering
Abstract
Ultrasonic nondestructive evaluation can be used to quantitatively interpret received electrical signals from ultrasonic measurements. In order to preform this interpretation, several techniques have been used. Two of these techniques are the standard procedure and the measurement model. The standard procedure compares the waves reflected from the flawed specimen with the waves reflected from many specimens of the same host material with different known flaws in the interior. By matching reflections, the approximate size of the flaw can be estimated by comparison with the response from the known standard flaw model; however, this method requires a large number of known, standard flaw models, which makes it a difficult procedure to use. In addition, different flaw shapes of different sizes can result in the same overall peak-to-peak response. Therefore, precise flaw sizing can not be obtained with this technique.
DOI
https://doi.org/10.31274/rtd-180813-5526
Publisher
Digital Repository @ Iowa State University, http://lib.dr.iastate.edu
Copyright Owner
Mary A. Paul
Copyright Date
1989
Language
en
Date Available
2013-12-12
File Format
application/pdf
File Size
262 pages
Recommended Citation
Paul, Mary A., "Transducer effects on ultrasonic attenuation measurements" (1989). Retrospective Theses and Dissertations. 247.
https://lib.dr.iastate.edu/rtd/247
