TY  - JOUR
A1  - Büttner, Christoph
A1  - Niederleithinger, Ernst
A1  - Buske, Stefan
A1  - Friedrich, Christian
T1  - Ultrasonic Echo Localization Using Seismic Migration Techniques in Engineered Barriers for Nuclear Waste Storage
Y1  - 2021-11-18
VL  - 40
IS  - 4
JF  - Journal of Nondestructive Evaluation
DO  - 10.1007/s10921-021-00824-3
PB  - Springer US
N2  - In the framework of non-destructive-testing advanced seismic imaging techniques have been applied to ultrasonic echo data in order to examine the integrity of an engineered test-barrier designed to be used for sealing an underground nuclear waste disposal site. Synthetic data as well as real multi-receiver ultrasonic data acquired at the test site were processed and imaged using Kirchhoff prestack depth migration reverse time migration (RTM). In general, both methods provide a good image quality as demonstrated by various case studies, however deeper parts within the test barrier containing inclined reflectors were reconstructed more accurately by RTM. In particular, the image quality of a specific target reflector at a depth of 8 m in the test-barrier has been significantly improved compared to previous investigations using synthetic aperture focusing technique, which justifies the considerable computing time of this method.
UR  - http://resolver.sub.uni-goettingen.de/purl?gldocs-11858/11222
ER  -