Original title: Instrumentation of four-point bending test during 4D computed tomography
Authors: Kytýř, Daniel ; Fíla, Tomáš ; Koudelka_ml., Petr ; Kumpová, Ivana ; Vopálenský, Michal ; Vavro, Leona ; Vavro, Martin
Document type: Papers
Conference/Event: Youth Symposium on Experimental Solid Mechanics /16./, Traunkirchen (AT), 20180517
Year: 2018
Language: eng
Abstract: High-resolution time-lapse micro-focus X-ray computed tomography is an effective method for investigation of deformation processes on volumetric basis including fracture propagation characteristics of non-homogeneous materials subjected to mechanical loading. This experimental method requires implementation of specifically designed loading devices to X-ray imaging setups. In case of bending tests, our background research showed that no commercial solution allowing for reliable investigation of so called fracture process zone in quasi-brittle materials is currently available. Thus, this paper is focused on description of recently developed in-situ four-point bending loading device and its instrumentation for testing of quasi-brittle materials. Proof of concept together with the pilot experiments were successfully performed in a CT scanner TORATOM. Based on results of the pilot experiments, we demonstrate that crack development and propagation in a quasi-brittle material can be successfully observed in 3D using high resolution 4D micro-CT under loading.
Keywords: 4D micro-CT; crack propagation; four-point bending; in-situ loading device
Project no.: ATCZ38, EF16_019/0000766
Funding provider: GA MŠk
Host item entry: Acta Polytechnica CTU Proceedings, ISBN 978-80-01-06474-0
Note: Související webová stránka: https://ojs.cvut.cz/ojs/index.php/APP/article/view/5080/4794

Institution: Institute of Theoretical and Applied Mechanics AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0288173

Permalink: http://www.nusl.cz/ntk/nusl-387675

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Research > Institutes ASCR > Institute of Theoretical and Applied Mechanics
Conference materials > Papers
 Record created 2018-11-15, last modified 2019-04-15

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