Strain rate and density dependent behaviour of bovine cancellous bone in compression

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dc.contributor.advisorNurick, Gerald Nen_ZA
dc.contributor.authorHiggins, Suzanneen_ZA
dc.date.accessioned2014-07-31T11:21:42Z
dc.date.available2014-07-31T11:21:42Z
dc.date.issued2008en_ZA
dc.descriptionIncludes abstract.
dc.descriptionIncludes bibliographical references (leaves 133-138).
dc.description.abstractThe mechanical properties of bone are determined by means of low strain rate testing performed quasi-statically on the Zwick Universal Testing Machine and high strain rate testing performed on the Split Hopkinson Pressure Bar. Cancellous bone is sourced from the vertebrae of five bovine of slaughtering age. Two sizes of specimens are machined. For quasi-static testing an aspect ratio of 2:1 is used (10 mm high and 5 mm in diameter). A ratio of 1:1 is utilised for the dynamic testing (5 mm in both length and diameter). Tests are conducted at four different strain rates of 10-4, 10-3, 10-2 and 10-1 /s for quasi-static tests and a range of approximately 800 to 1300 /s for the high impact tests. A total of 68 specimens are tested quasi-statically, with 17 specimens assigned to each strain rate. The dynamic data is gathered from tests on 18 specimens. Therefore, a total of 86 specimens are used for the combined data. The trends in yield stress, yield strain and Young’s modulus as a function of both strain rate and density were investigated. Results show that, as expected, density has a far greater effect on the mechanical properties of cancellous bone than strain rate. Due to the high scatter in results, the exact relationships are difficult to determine, although results of this work generally fall within the findings of the literature reviewed.en_ZA
dc.identifier.apacitationHiggins, S. (2008). <i>Strain rate and density dependent behaviour of bovine cancellous 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/11427/5531en_ZA
dc.identifier.chicagocitationHiggins, Suzanne. <i>"Strain rate and density dependent behaviour of bovine cancellous bone in compression."</i> Thesis., University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Mechanical Engineering, 2008. http://hdl.handle.net/11427/5531en_ZA
dc.identifier.citationHiggins, S. 2008. Strain rate and density dependent behaviour of bovine cancellous bone in compression. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Higgins, Suzanne AB - The mechanical properties of bone are determined by means of low strain rate testing performed quasi-statically on the Zwick Universal Testing Machine and high strain rate testing performed on the Split Hopkinson Pressure Bar. Cancellous bone is sourced from the vertebrae of five bovine of slaughtering age. Two sizes of specimens are machined. For quasi-static testing an aspect ratio of 2:1 is used (10 mm high and 5 mm in diameter). A ratio of 1:1 is utilised for the dynamic testing (5 mm in both length and diameter). Tests are conducted at four different strain rates of 10-4, 10-3, 10-2 and 10-1 /s for quasi-static tests and a range of approximately 800 to 1300 /s for the high impact tests. A total of 68 specimens are tested quasi-statically, with 17 specimens assigned to each strain rate. The dynamic data is gathered from tests on 18 specimens. Therefore, a total of 86 specimens are used for the combined data. The trends in yield stress, yield strain and Young’s modulus as a function of both strain rate and density were investigated. Results show that, as expected, density has a far greater effect on the mechanical properties of cancellous bone than strain rate. Due to the high scatter in results, the exact relationships are difficult to determine, although results of this work generally fall within the findings of the literature reviewed. DA - 2008 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 2008 T1 - Strain rate and density dependent behaviour of bovine cancellous bone in compression TI - Strain rate and density dependent behaviour of bovine cancellous bone in compression UR - http://hdl.handle.net/11427/5531 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/5531
dc.identifier.vancouvercitationHiggins S. Strain rate and density dependent behaviour of bovine cancellous 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/11427/5531en_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.titleStrain rate and density dependent behaviour of bovine cancellous bone in compressionen_ZA
dc.typeMaster Thesis
dc.type.qualificationlevelMasters
dc.type.qualificationnameMScen_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceThesisen_ZA
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