The strain rate dependent mechanical properties and modelling of bovine cortical bone in compression

Simple item page
dc.contributor.advisorNurick, Gerald Nen_ZA
dc.contributor.authorVan der Westhuizen, Anriëtteen_ZA
dc.date.accessioned2014-07-31T11:18:06Z
dc.date.available2014-07-31T11:18:06Z
dc.date.issued2008en_ZA
dc.descriptionIncludes abstract.
dc.descriptionIncludes bibliographical references (p. 245-253).
dc.description.abstractConventional Hopkinson bar experiments resulted in a specimen strain rate that decreases beyond reaching a maximum value at the rise time. The variation in dynamic strain rate was rectified by shaping the Hopkinson bar input pulse with a reusable, conical striker bar. The hypothesis investigated was that a varying strain rate history could result in the measurement of a smeared response for materials with significant strain rate sensitivity. Results indicate that nonuniform, dynamic strain rates result in irregular stress-strain curves; however the stress-strain responses comprise the same corridor as the constant strain rate responses. Bovine cortical bone exhibits significant strain rate sensitivity, with distinct corridors of quasi-static and dynamic stress-strain response. Fracture occurs at a higher stress for both increasing strain rate and bone density. A microstructural investigation indicated that longitudinal compression of bovine bone leads to the formation of shear bands and that fracture depends on the orientation of the vascular porosity.en_ZA
dc.identifier.apacitationVan der Westhuizen, A. (2008). <i>The strain rate dependent mechanical properties and modelling of bovine cortical bone in compression</i>. (Thesis). University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Mechanical Engineering. Retrieved from http://hdl.handle.net/11427/5459en_ZA
dc.identifier.chicagocitationVan der Westhuizen, Anriëtte. <i>"The strain rate dependent mechanical properties and modelling of bovine cortical bone in compression."</i> Thesis., University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Mechanical Engineering, 2008. http://hdl.handle.net/11427/5459en_ZA
dc.identifier.citationVan der Westhuizen, A. 2008. The strain rate dependent mechanical properties and modelling of bovine cortical bone in compression. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Van der Westhuizen, Anriëtte AB - Conventional Hopkinson bar experiments resulted in a specimen strain rate that decreases beyond reaching a maximum value at the rise time. The variation in dynamic strain rate was rectified by shaping the Hopkinson bar input pulse with a reusable, conical striker bar. The hypothesis investigated was that a varying strain rate history could result in the measurement of a smeared response for materials with significant strain rate sensitivity. Results indicate that nonuniform, dynamic strain rates result in irregular stress-strain curves; however the stress-strain responses comprise the same corridor as the constant strain rate responses. Bovine cortical bone exhibits significant strain rate sensitivity, with distinct corridors of quasi-static and dynamic stress-strain response. Fracture occurs at a higher stress for both increasing strain rate and bone density. A microstructural investigation indicated that longitudinal compression of bovine bone leads to the formation of shear bands and that fracture depends on the orientation of the vascular porosity. DA - 2008 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 2008 T1 - The strain rate dependent mechanical properties and modelling of bovine cortical bone in compression TI - The strain rate dependent mechanical properties and modelling of bovine cortical bone in compression UR - http://hdl.handle.net/11427/5459 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/5459
dc.identifier.vancouvercitationVan der Westhuizen A. The strain rate dependent mechanical properties and modelling of bovine cortical bone in compression. [Thesis]. University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Mechanical Engineering, 2008 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/5459en_ZA
dc.language.isoengen_ZA
dc.publisher.departmentDepartment of Mechanical Engineeringen_ZA
dc.publisher.facultyFaculty of Engineering and the Built Environment
dc.publisher.institutionUniversity of Cape Town
dc.subject.otherMechanical Engineeringen_ZA
dc.titleThe strain rate dependent mechanical properties and modelling of bovine cortical bone in compressionen_ZA
dc.typeDoctoral Thesis
dc.type.qualificationlevelDoctoral
dc.type.qualificationnamePhDen_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceThesisen_ZA
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
thesis_ebe_2008_van_der_westhuizen.pdf
Size:
187 MB
Format:
Adobe Portable Document Format
Description:
Download
Collections
PhD / Doctoral