Application of micro-computed tomography to assessment of the evolution of crack network in brittle materials


Vol. 538 (6) 2017 / wtorek, 19 lutego, 2019

(in Polish)

D. Łydżba,
M. Pachnicz,
M. Rajczakowska,
A. Różański,
M. Sobótka,
D. Stefaniuk,

DOI: 10.15199/33.2017.06.16

Volume 538: Issue 6
Pages 48-49
Accepted for publication: 24.04.2017 r.

The paper presents the analysis of crack network development induced in rock samples, subjected to uniaxial compression. The samples were scanned using micro-computer tomography after three stages of load: before loading, after application of a force equal to 40–50% of ultimate limit and, finally, after reaching microdilatancy threshold (or ultimate limit force). The analysis of acquired 3D images at every loading stage included fracture network segmentation and determination of chosen quantities describing its morphology: porosity (fraction of void space), spatial distribution of fracture aperture, tortuosity as well as structure model index (SMI). The parameters can be used to determine permeability parameters of cracked material.

Keywords: tortuosity, porosity, morphology, microstructure.
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prof. dr hab. inż. Dariusz Łydżba, Politechnika Wrocławska, Wydział Budownictwa Lądowego i Wodnego

mgr inż. Michał Pachnicz, Politechnika Wrocławska, Wydział Budownictwa Lądowego i Wodnego

mgr inż. Magdalena Rajczakowska, Politechnika Wrocławska, Wydział Budownictwa Lądowego i Wodnego

dr inż. Adrian Różański, Politechnika Wrocławska, Wydział Budownictwa Lądowego i Wodnego

dr inż. Maciej Sobótka, Politechnika Wrocławska, Wydział Budownictwa Lądowego i Wodnego

mgr inż. Damian Stefaniuk, Politechnika Wrocławska, Wydział Budownictwa Lądowego i Wodnego

dr inż. Maciej Sobótka

maciej.sobotka@pwr.edu.pl

Full paper is available at Publisher house SIGMA-NOT Sp. z o.o. webpage

DOI: 10.15199/33.2017.06.16