Original title: Tomographic investigation of the sandstone fracture toughness
Authors: Vavřík, Daniel ; Beneš, Pavel ; Fíla, Tomáš ; Koudelka_ml., Petr ; Kumpová, Ivana ; Vavro, Martin
Document type: Papers
Conference/Event: International Conference Engineering mechanics 2022, Milovy (CZ), 20220509
Year: 2022
Language: eng
Abstract: It is well known that the measured values of the fracture toughness of quasi brittle materials are influenced by material heterogeneity, dimensions, boundary conditions, and unequal tension and compression properties. Standard testing methods supposing isotropic material, in contrary the quasi-brittle materials differ from this theoretical expectation, therefore this approach may fail. The authors present Local Fracture Toughness Testing (LFTT) method to overcome this obstacle. LFFT based on a complex methodology using a series of tomographic reconstructions recorded during specimen loading is calculated independently of the outside boundary conditions.
Keywords: crack path; four-point bending test; fracture process zone; quasi-brittle material; X-Ray computed tomography
Project no.: EF16_019/0000766
Funding provider: GA MŠk
Host item entry: Engineering mechanics 2022. Book of full texts, ISBN 978-80-86246-48-2, ISSN 1805-8248
Note: Související webová stránka: https://www.engmech.cz/im/proceedings/show_p/2022/397

Institution: Institute of Theoretical and Applied Mechanics AS ČR (web)
Document availability information: Fulltext is available in the digital repository of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0331327

Permalink: http://www.nusl.cz/ntk/nusl-508579


The record appears in these collections:
Research > Institutes ASCR > Institute of Theoretical and Applied Mechanics
Conference materials > Papers