Estimation of the crack behaviour in the compressive layer of the alumina-zirconia ceramic laminate

0452004 - ÚFM 2016 RIV CH eng C - Konferenční příspěvek (zahraniční konf.)
Náhlík, Luboš - Máša, Bohuslav - Hutař, P.
Estimation of the crack behaviour in the compressive layer of the alumina-zirconia ceramic laminate.
Advances in Fracture and Damage Mechanics XIII. Zürich: Trans Tech publications, 2015 - (Alfaiate, J.; Aliabadi, M.), s. 41-44. Key Engineering Materials, 627. ISBN 978-3-03835-235-8. ISSN 1013-9826.
[FDM 2014 International Conference on Fracture and Damage Mechanics /13./. São Miguel Island, Azores (PT), 23.09.2014-25.09.2014]
Grant CEP: GA MŠMT(CZ) EE2.3.30.0063
Institucionální podpora: RVO:68081723
Klíčová slova: crack propagation direction * residual stresses * ceramic laminates * strain energy density factor * crack behaviour * material interface
Kód oboru RIV: JL - Únava materiálu a lomová mechanika

This paper deals with a description of the crack behaviour in the layered alumina-zirconia ceramic laminate. The main aim is to investigate the crack behaviour in the compressive layer. The crack propagation was investigated on the basis of linear elastic fracture mechanics. Two dimensional finite element models were developed in order to obtain a stress distribution around the crack tip. The stress intensity factors were computed numerically employing the direct method. The change in the crack propagation direction was estimated using criterion based on the strain energy density factor. Sharp crack deflection in the compressive layer was predicted by mentioned approach. The determined crack behaviour is qualitatively in a good agreement with experimental observations.
Trvalý link: http://hdl.handle.net/11104/0253190