X-ray dynamic observation of the evolution of the fracture process zone in a quasi-brittle specimen
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Date
2015-08-01
Authors
Kumpová, Ivana
Fíla, Tomáš
Vavřík, Daniel
Keršner, Zbyněk
0000-0001-8556-4996Advisor
Referee
Mark
Journal Title
Journal ISSN
Volume Title
Publisher
IOP Publishing
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Abstract
The aim of this work is the evaluation of the fracture process zone while loading a quasi-brittle concrete compound. The regularly used optical observation of the specimen surface does not provide accurate information regarding the fracture zone shape, particularly when this zone is tunnelled inside of the specimen body. Therefore, X-ray dynamic defectoscopy and computed tomography were employed as tools for an extended investigation of process zone evolution. A notched specimen manufactured from silicate composite was subjected to the three-point bending test in a special table-top loading device. On-line radiographic observation of the process zone during the loading experiment serves for overall evaluation, while a tomographic measurement which is conducted during temporal loading interruption - provides information about the spatial distribution of the newly developed cracks.
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Citation
Journal of Instrumentation. 2015, vol. 10, issue 8, p. 1-9.
https://iopscience.iop.org/article/10.1088/1748-0221/10/08/C08004
https://iopscience.iop.org/article/10.1088/1748-0221/10/08/C08004
Document type
Peer-reviewed
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Published version
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Language of document
en