Study of Influence of Residual Stresses on Crack Propagation in Particulate Ceramic Composites

0469173 - ÚFM 2018 RIV CH eng C - Konferenční příspěvek (zahraniční konf.)
Majer, Zdeněk - Náhlík, Luboš - Štegnerová, Kateřina - Hutař, Pavel - Bermejo, R.
Study of Influence of Residual Stresses on Crack Propagation in Particulate Ceramic Composites.
Materials Structure & Micromechanics of Fracture VIII. Zürrich: Trans Tech Publications, 2017 - (Šandera, P.), Č. 258 (2017), s. 178-181. Solid State Phenomena, 258. ISBN 978-3-03835-626-4. ISSN 1662-9779.
[MSMF8. International Conference on Materials Structure and Micromechanics of Fracture /8./. Brno (CZ), 27.06.2016-29.06.2016]
Grant CEP: GA ČR GA15-09347S
Institucionální podpora: RVO:68081723
Klíčová slova: residual stresses * particulate ceramic composite * crack propagation * shielding effect
Obor OECD: Audio engineering, reliability analysis

The aim of the present work is to analzye the influence of residual stresses in the particulate ceramic composite on the crack propagation. The crack propagation direction was estimated by using Sih´s criterion based on the strain energy density factor. A two-dimensional finite element model was developed for determination of crack path. The residual stresses resulting from the mismatch of coefficients of thermal expansion during the facrication process of the composite were implemented to the computational model. The effect of the particles shape on the crack peopagation was investigated. Conclusions of this paper can contribute to a better understanding of the propagation of micro-cracks in particulate composites in the field of residual stresses.
Trvalý link: http://hdl.handle.net/11104/0271189