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Effect of microstructure on micromechanical performance of dry cortical bone tissues

Yin, Ling; Venkatesan, Sudharshan; Kalyanasundaram, Shankar; Qin, Qing Hua

Description

The mechanical properties of bone depend on composition and structure. Previous studies have focused on macroscopic fracture behavior of bone. In the present study, we performed microindentation studies to understand the deformation properties and microcrack-microstructure interactions of dry cortical bone. Dry cortical bone tissues from lamb femurs were tested using Vickers indentation with loads of 0.245-9.8 N. We examined the effect of bone microstructure on deformation and crack propagation...[Show more]

dc.contributor.authorYin, Ling
dc.contributor.authorVenkatesan, Sudharshan
dc.contributor.authorKalyanasundaram, Shankar
dc.contributor.authorQin, Qing Hua
dc.date.accessioned2015-12-07T22:55:38Z
dc.identifier.issn1044-5803
dc.identifier.urihttp://hdl.handle.net/1885/28476
dc.description.abstractThe mechanical properties of bone depend on composition and structure. Previous studies have focused on macroscopic fracture behavior of bone. In the present study, we performed microindentation studies to understand the deformation properties and microcrack-microstructure interactions of dry cortical bone. Dry cortical bone tissues from lamb femurs were tested using Vickers indentation with loads of 0.245-9.8 N. We examined the effect of bone microstructure on deformation and crack propagation using scanning electron microscopy (SEM). The results showed the significant effect of cortical bone microstructure on indentation deformation and microcrack propagation. The indentation deformation of the dry cortical bone was basically plastic at any applied load with a pronounced viscoelastic recovery, in particular at lower loads. More microcracks up to a length of approximately 20 μm occurred when the applied load was increased. At loads of 4.9 N and higher, most microcracks were found to develop from the boundaries of haversian canals, osteocyte lacunae and canaliculi. Some microcracks propagated from the parallel direction of the longitudinal interstitial lamellae. At loads 0.45 N and lower, no visible microcracks were observed.
dc.publisherElsevier
dc.sourceMaterials Characterization
dc.subjectKeywords: Applied loads; Bone microstructure; Cortical bone; Deformation properties; Dry cortical bone; Indentation deformation; Macroscopic fractures; Micro-mechanical; Microindentation; Osteocyte lacunae; SEM; Vickers indentation; Viscoelastic recovery; Biomechan Deformation; Dry cortical bone; Microcracks; Microindentation; Microstructure
dc.titleEffect of microstructure on micromechanical performance of dry cortical bone tissues
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume60
dc.date.issued2009
local.identifier.absfor090699 - Electrical and Electronic Engineering not elsewhere classified
local.identifier.ariespublicationu4708487xPUB58
local.type.statusPublished Version
local.contributor.affiliationYin, Ling, James Cook University
local.contributor.affiliationVenkatesan, Sudharshan, College of Engineering and Computer Science, ANU
local.contributor.affiliationKalyanasundaram, Shankar, College of Engineering and Computer Science, ANU
local.contributor.affiliationQin, Qing Hua, College of Engineering and Computer Science, ANU
local.description.embargo2037-12-31
local.bibliographicCitation.issue12
local.bibliographicCitation.startpage1424
local.bibliographicCitation.lastpage1431
local.identifier.doi10.1016/j.matchar.2009.06.015
dc.date.updated2016-02-24T11:20:45Z
local.identifier.scopusID2-s2.0-70350571669
local.identifier.thomsonID000272776800002
CollectionsANU Research Publications

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