Micromechanical Study of Strength and Toughness of Advanced Ceramics

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dc.contributor.author McNamara, Declan en
dc.contributor.author Alveen, Patricia en
dc.contributor.author Carolan, Declan en
dc.contributor.author et al. en
dc.date.accessioned 2014-09-29T09:50:00Z
dc.date.available 2014-09-29T09:50:00Z
dc.date.copyright 2014 Elsevier en
dc.date.issued 2014 en
dc.identifier.citation Procedia Materials Science en
dc.identifier.uri http://hdl.handle.net/10197/5906
dc.description.abstract Numerical investigations using the finite volume (FV) method were conducted to examine the effect of microstructure and mi- crostructural properties on the fracture strength of advanced ceramics with industrial applications. Statistically representative microstructural volumes were created using a diffuse-interface model using OpenFOAM-1.6-ext. Crack initiation and growth was modeled using a recently developed arbitrary crack propagation model. It was found that by varying the Young's modulus of the second phase material, a significant change in the maximum failure load was observed. It was also shown that there exists an opti- mum Young's modulus for which a maximum failure load will be reached. A number of microstructures with a varying percentage second phase material were investigated in this study. Results indicate that for a given set of material and cohesive parameters the maximum failure load was insensitive to the percentage second phase material. This study highlights the role that microstructure adconstituent properties of brittle ceramics have on influencing the fracture strength of such material. With this in mind, a para- metric study was undertaken to examine the competition between crack deflection and crack penetration at the interface between two materials. It was found that appropriate choice of interface strength and toughness as well as second phase material compliance was required in order to promote an overall strength and toughness increase through crack deflection and bridging. Such numerical modeling is essential in order to gain a greater understanding into the structure-property relationship that exists for such advanced ceramics. en
dc.language.iso en en
dc.publisher Elsevier en
dc.rights This is the author's version of a work that was accepted for publication in Procedia Materials Science. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Procedia Materials Science (3, , (2014)) DOI: http://dx.doi/org/10.1016/j.mspro.2014.06.292 en
dc.subject Fracture strength en
dc.subject Microstructural modeling en
dc.subject Finite volume method. en
dc.title Micromechanical Study of Strength and Toughness of Advanced Ceramics en
dc.type Journal Article en
dc.internal.availability Full text available en
dc.status Peer reviewed en
dc.identifier.volume 3 en
dc.identifier.startpage 1810 en
dc.identifier.endpage 1815 en
dc.identifier.doi 10.1016/j.mspro.2014.06.292
dc.neeo.contributor McNamara|Declan|aut|
dc.neeo.contributor Alveen|Patricia|aut|
dc.neeo.contributor Carolan|Declan|aut|
dc.neeo.contributor et al.||aut|
dc.internal.notes ProcediaDMcN.pdf en
dc.description.admin Deposited by bulk import en
dc.date.updated 2014-09-26T14:13:56.541+01:00 en

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