Počet záznamů: 1
In situ observation of the deformation and fracture of an alumina-alumina ceramic-matrix composite at elevated temperature using x-ray computed tomography
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SYSNO ASEP 0542174 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název In situ observation of the deformation and fracture of an alumina-alumina ceramic-matrix composite at elevated temperature using x-ray computed tomography Tvůrce(i) Pirzada, Talha J. (GB)
Liu, D. (GB)
Ell, J. (US)
Barnard, H. (US)
Šulák, Ivo (UFM-A) ORCID
Galano, M. (GB)
Marrow, Thomas J. (GB)
Ritchie, Robert O. (US)Celkový počet autorů 8 Zdroj.dok. Journal of the European Ceramic Society. - : Elsevier - ISSN 0955-2219
Roč. 41, č. 7 (2021), s. 4217-4230Poč.str. 14 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova Ceramic-matrix composites ; Oxide-oxide composite ; X-ray computed micro-tomography ; Digital volume correlation ; In situ mechanical testing ; Failure mechanisms Vědní obor RIV JI - Kompozitní materiály Obor OECD Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics Způsob publikování Omezený přístup Institucionální podpora UFM-A - RVO:68081723 UT WOS 000632719200001 EID SCOPUS 85101137829 DOI 10.1016/j.jeurceramsoc.2021.01.030 Anotace The deformation and fracture of a 0/90° Nextel 720 mullite fibre / alumina matrix ceramic-matrix composite material has been observed by in situ synchrotron x-ray computed micro-tomography at ambient temperature and at 1100 °C. A three-point loading configuration was used and samples were loaded monotonically until final fracture. The flexural strength was found to be unaffected by temperature. 3D visualisation of the microstructure showed fracture occurred by propagation of internal cracks at stresses close to the flexural strength. Shear fractures propagated across fibre bundles that were oriented perpendicular to the flexural stress at both room temperature and 1100 °C. At the higher temperature, an additional failure mode of delamination was observed, that may arise from relaxation of thermal residual stresses and creep. Pracoviště Ústav fyziky materiálu Kontakt Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Rok sběru 2022 Elektronická adresa https://www.sciencedirect.com/science/article/pii/S0955221921000467?via%3Dihub
Počet záznamů: 1