5809
2015
eng
conferenceobject
0
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3D Corrosion Detection in Time-dependent CT Images of Concrete
In civil engineering, the corrosion of steel reinforcements in structural elements of concrete bares a risk of
stability-reduction, mainly caused by the exposure to chlorides. 3D computed tomography (CT) reveals the inner
structure of concrete and allows one to investigate the corrosion with non-destructive testing methods. To carry
out such investigations, specimens with a large artificial crack and an embedded steel rebar have been
manufactured. 3D CT images of those specimens were acquired in the original state. Subsequently three cycles
of electrochemical pre-damaging together with CT imaging were applied. These time series have been evaluated
by means of image processing algorithms to segment and quantify the corrosion products. Visualization of the
results supports the understanding of how corrosion propagates into cracks and pores. Furthermore, pitting of
structural elements can be seen without dismantling. In this work, several image processing and visualization
techniques are presented that have turned out to be particularly effective for the visualization and segmentation
of corrosion products. Their combination to a workflow for corrosion analysis is the main contribution of this
work.
DIR-2015 Proceedings
http://www.ndt.net/events/DIR2015/app/content/Paper/36_Paetsch.pdf
no
Olaf Paetsch
Olaf Paetsch
Daniel Baum
Steffen Prohaska
Karsten Ehrig
Dietmar Meinel
Gino Ebell
Visual Data Analysis
Baum, Daniel
Paetsch, Olaf
Prohaska, Steffen
BAM-CORROSION
Visual and Data-centric Computing
5029
2014
deu
article
0
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Korrosionsverfolgung in 3D-computertomographischen Aufnahmen von Stahlbetonproben
DGZfP-Jahrestagung 2014 Konferenzband
http://jt2014.dgzfp.de/portals/jt2014/BB/di1c3.pdf
yes
urn:nbn:de:0297-zib-50912
Olaf Paetsch
Olaf Paetsch
Daniel Baum
Steffen Prohaska
Karsten Ehrig
Gino Ebell
Dietmar Meinel
Andreas Heyn
Visual Data Analysis
Baum, Daniel
Paetsch, Olaf
Prohaska, Steffen
BAM-CORROSION
Visual and Data-centric Computing