Název:
Tomographic investigation of the sandstone fracture toughness
Autoři:
Vavřík, Daniel ; Beneš, Pavel ; Fíla, Tomáš ; Koudelka_ml., Petr ; Kumpová, Ivana ; Vavro, Martin Typ dokumentu: Příspěvky z konference Konference/Akce: International Conference Engineering mechanics 2022, Milovy (CZ), 20220509
Rok:
2022
Jazyk:
eng
Abstrakt: 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.
Klíčová slova:
crack path; four-point bending test; fracture process zone; quasi-brittle material; X-Ray computed tomography Číslo projektu: EF16_019/0000766 Poskytovatel projektu: GA MŠk Zdrojový dokument: Engineering mechanics 2022. Book of full texts, ISBN 978-80-86246-48-2, ISSN 1805-8248 Poznámka: Související webová stránka: https://www.engmech.cz/im/proceedings/show_p/2022/397
Instituce: Ústav teoretické a aplikované mechaniky AV ČR
(web)
Informace o dostupnosti dokumentu:
Dokument je dostupný v repozitáři Akademie věd. Původní záznam: http://hdl.handle.net/11104/0331327