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Novel device for 4-point flexural testing of quasi-brittle materials during 4D computed tomography
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SYSNO ASEP 0490614 Druh ASEP C - Konferenční příspěvek (mezinárodní konf.) Zařazení RIV D - Článek ve sborníku Název Novel device for 4-point flexural testing of quasi-brittle materials during 4D computed tomography Tvůrce(i) Koudelka_ml., Petr (UTAM-F) RID, SAI, ORCID
Fíla, Tomáš (UTAM-F) RID, SAI, ORCID
Kytýř, Daniel (UTAM-F) SAI, RID, ORCID
Vavro, Leona (UGN-S) RID
Vavro, Martin (UGN-S) RID, ORCID
Souček, Kamil (UGN-S) RID, ORCID
Vavřík, Daniel (UTAM-F) RID, SAI, ORCID
Drdácký, Miloš (UTAM-F) RID, SAI, ORCIDCelkový počet autorů 8 Zdroj.dok. Proceedings of the first International conference on theoretical, applied and experimental mechanics. - Cham : Springer, 2018 / Gdoutos E. E. - ISSN 2522-560X - ISBN 978-3-319-91988-1 Rozsah stran s. 27-32 Poč.str. 6 s. Forma vydání Tištěná - P Akce International conference on theoretical, applied and experimental mechanics /1./ Datum konání 17.06.2018 - 20.06.2018 Místo konání Paphos Země CY - Kypr Typ akce WRD Jazyk dok. eng - angličtina Země vyd. CH - Švýcarsko Klíč. slova four-point bending ; fracture process zone ; 4D micro-CT Vědní obor RIV JB - Senzory, čidla, měření a regulace Obor OECD Applied mechanics Vědní obor RIV – spolupráce Ústav geoniky - Senzory, čidla, měření a regulace CEP GBP105/12/G059 GA ČR - Grantová agentura ČR Institucionální podpora UTAM-F - RVO:68378297 ; UGN-S - RVO:68145535 UT WOS 000521737400005 EID SCOPUS 85085178772 DOI 10.1007/978-3-319-91989-8_5 Anotace This paper deals with development and validation of a novel device for investigation of the crack behavior in quasi-brittle materials using radiographically observed flexural testing. Instead of standard horizontal arrangement of three-point bending devices, a novel approach consisting in a vertically oriented four-point bending setup is proposed. In the paper, technical description of the proposed device together with its advantages over existing methods and results of validation experiments with natural rocks are presented. The validation experiments were concentrated on the ability of the device to capture the fracture behavior of the samples using X-ray transmission radiography and 4D X-ray micro-tomography. Particular attention was paid to evaluate the ability to perform tomographic scans during post-peak softening, i.e. on intermittent loading of samples after formation of the crack. The acquired results showed very good performance in terms of both the mechanical characteristics of the device (stiffness and loading precision) and the X-ray imaging properties. Pracoviště Ústav teoretické a aplikované mechaniky Kontakt Kulawiecová Kateřina, kulawiecova@itam.cas.cz, Tel.: 225 443 285 Rok sběru 2019
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