Reverse Time Migration : A Seismic Imaging Technique Applied to Synthetic Ultrasonic Data
Joint Authors
Müller, Sabine
Niederleithinger, Ernst
Bohlen, Thomas
Source
International Journal of Geophysics
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-07-05
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Abstract EN
Ultrasonic echo testing is a more and more frequently used technique in civil engineering to investigate concrete building elements, to measure thickness as well as to locate and characterise built-in components or inhomogeneities.
Currently the Synthetic Aperture Focusing Technique (SAFT), which is closely related to Kirchhoff migration, is used in most cases for imaging.
However, this method is known to have difficulties to image steeply dipping interfaces as well as lower boundaries of tubes, voids or similar objects.
We have transferred a processing technique from geophysics, the Reverse Time Migration (RTM) method, to improve the imaging of complicated geometries.
By using the information from wide angle reflections as well as from multiple events there are fewer limitations compared to SAFT.
As a drawback the required computing power is significantly higher compared to the techniques currently used.
Synthetic experiments have been performed on polyamide and concrete specimens to show the improvements compared to SAFT.
We have been able to image vertical interfaces of step-like structures as well as the lower boundaries of circular objects.
It has been shown that RTM is a step forward for ultrasonic testing in civil engineering.
American Psychological Association (APA)
Müller, Sabine& Niederleithinger, Ernst& Bohlen, Thomas. 2012. Reverse Time Migration : A Seismic Imaging Technique Applied to Synthetic Ultrasonic Data. International Journal of Geophysics،Vol. 2012, no. 2012, pp.1-7.
https://search.emarefa.net/detail/BIM-447910
Modern Language Association (MLA)
Müller, Sabine…[et al.]. Reverse Time Migration : A Seismic Imaging Technique Applied to Synthetic Ultrasonic Data. International Journal of Geophysics No. 2012 (2012), pp.1-7.
https://search.emarefa.net/detail/BIM-447910
American Medical Association (AMA)
Müller, Sabine& Niederleithinger, Ernst& Bohlen, Thomas. Reverse Time Migration : A Seismic Imaging Technique Applied to Synthetic Ultrasonic Data. International Journal of Geophysics. 2012. Vol. 2012, no. 2012, pp.1-7.
https://search.emarefa.net/detail/BIM-447910
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-447910