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Modelling the micro-damage process zone during cortical bone fracture

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dc.contributor.authorDapaah, Daniel
dc.contributor.authorBadaoui, Raphael
dc.contributor.authorBahmani, Aram
dc.contributor.authorMontesano, John
dc.contributor.authorWillett, Thomas
dc.date.accessioned2020-01-08T01:36:59Z
dc.date.available2020-01-08T01:36:59Z
dc.date.issued2020-02-01
dc.description.abstractCortical bone employs intrinsic toughening mechanisms to delay crack growth initiation and propagation hence increasing its fracture toughness. Computational models of the bone fracture process though do not explicitly capture these intrinsic local toughening mechanisms. Such models could provide insights into possible sub-microscale mechanisms involved in the bone fracture process. Therefore, in this study, the intrinsic toughening mechanism referred to as the micro-damage process zone (MDPZ) was modelled using a bi-linear continuum damage law. This model was then experimentally validated using single edge notch bending specimens and digital image correlation for strain field measurements. The size and shape of the micro-damage process zone as well as the load-deflection curves generated by the model reasonably replicated those measured experimentally. The results indicate that the continuum damage mechanics approach is a robust means of modelling the MDPZ at the continuum level and with further development of the model can provide a useful tool for studies of the fracture process in cortical bone.en
dc.identifier.urihttps://doi.org/10.1016/j.engfracmech.2019.106811
dc.identifier.urihttp://hdl.handle.net/10012/15424
dc.language.isoenen
dc.publisherElsevieren
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectcortical boneen
dc.subjectfracture energyen
dc.subjectprocess zoneen
dc.subjectcontinuum damage mechanicsen
dc.titleModelling the micro-damage process zone during cortical bone fractureen
dc.typeArticleen
dcterms.bibliographicCitationDapaah D, Badaoui R, Bahmani A, Montesano J, Willett T. Modelling the micro-damage process zone during cortical bone fracture. Engineering Fracture Mechanics 2020;224:106811.en
uws.contributor.affiliation1Faculty of Engineeringen
uws.contributor.affiliation2Mechanical and Mechatronics Engineeringen
uws.contributor.affiliation2Systems Design Engineeringen
uws.peerReviewStatusRevieweden
uws.scholarLevelFacultyen
uws.scholarLevelGraduateen
uws.typeOfResourceTexten

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