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CHLUP, Z. NOVOTNÁ, L. ŠIŠKA, F. DRDLÍK, D. HADRABA, H.
Original Title
Effect of residual stresses to the crack path in alumina/zirconia laminates
Type
journal article in Web of Science
Language
English
Original Abstract
Laminates with alternating layers are well known from nature. The strongly bonded alumina/zirconia (Al2O3/ZrO2) layers can combine high fracture resistance with high strength and stiffness when properly tailored. The presence of compressive residual stresses formed in Al2O3 layers can suppress and deflect cracks propagating through the layers. The crack path is governed by both the elastic properties and the internal stress field of individual layers. The laminates with various layer-thickness ratios ranging from 0.1 to 3 were used to investigate the effect of residual stresses and influence of crack formation pattern on the crack path development. The indentation surface cracks observed in various alumina-zirconia laminates exhibit the same crack deflection independently on the level of internal stresses. The crack deflection observed on the fracture surfaces of bending specimens was related to the indentations cracks. The complicated crack path was explained experimentally by 3D reconstruction with the support of numerical simulations.
Keywords
Laminates; Alumina; Zirconia; Residual/internal stresses; Crack path
Authors
CHLUP, Z.; NOVOTNÁ, L.; ŠIŠKA, F.; DRDLÍK, D.; HADRABA, H.
Released
13. 8. 2020
ISBN
0955-2219
Periodical
Journal of the European Ceramic Society
Year of study
40
Number
15
State
United Kingdom of Great Britain and Northern Ireland
Pages from
5810
Pages to
5818
Pages count
9
URL
https://www.sciencedirect.com/science/article/pii/S0955221920305148
BibTex
@article{BUT164765, author="Zdeněk {Chlup} and Lenka {Novotná} and Filip {Šiška} and Daniel {Drdlík} and Hynek {Hadraba}", title="Effect of residual stresses to the crack path in alumina/zirconia laminates", journal="Journal of the European Ceramic Society", year="2020", volume="40", number="15", pages="5810--5818", doi="10.1016/j.jeurceramsoc.2020.06.044", issn="0955-2219", url="https://www.sciencedirect.com/science/article/pii/S0955221920305148" }