TY - GEN TI - Instrumentation of four-point bending test during 4D computed tomography T3 - Youth Symposium on Experimental Solid Mechanics /16./ AU - Kytýř, Daniel AB - 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. SN - 978-80-01-06474-0 UR - http://hdl.handle.net/11104/0288173 UR - http://www.nusl.cz/ntk/nusl-387675 A2 - Koudelka_ml., Petr A2 - Vavro, Martin A2 - Vavro, Leona A2 - Kumpová, Ivana A2 - Vopálenský, Michal A2 - Fíla, Tomáš LA - eng KW - crack propagation KW - four-point bending KW - in-situ loading device KW - 4D micro-CT PY - 2018 PB - Ústav teoretické a aplikované mechaniky, Prosecká 76, 190 00 Praha 9, http://www.itam.cas.cz/ ER -