Computational study of compact tension and double torsion test geometries

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dc.contributor.advisorDaya, Reddyen_ZA
dc.contributor.advisorTait, Roberten_ZA
dc.contributor.advisorBecker, Thorstenen_ZA
dc.contributor.advisorSkatulla, Sebastianen_ZA
dc.contributor.authorGoqo, Sicelo Praisgoden_ZA
dc.date.accessioned2014-11-05T03:46:03Z
dc.date.available2014-11-05T03:46:03Z
dc.date.issued2014en_ZA
dc.descriptionIncludes bibliographical references.en_ZA
dc.description.abstractIn the design of many engineering components subjected to cyclic or repetitive loading,fatigue is an ever-present challenge. The engineer often endeavors to design the structural or component system in such a way that the cyclic stresses are below a particular fatigue limit, or, in fracture mechanics terms, at stress levels below threshold. In the Paris formulation, fatigue threshold, Δҝₜₕ, may be regarded as that value of cyclic stress intensity below which fatigue crack growth does not occur. For a particular material and environment, this threshold value, Δҝₜₕ, is determined experimentally by monitoring growth of a crack (typically in a compact tension ( CT) specimen) and continually reducing cyclic stress levels until the threshold condition is reached. This procedure is very cumbersome and time-consuming, and this project rather considers the design of a fracture mechanics specimen geometry in which there is a decreasing stress in tensity (with crack length) that facilitates determination of the threshold value simply at constant applied cyclic amplitude, and the crack length at which fatigue crack growth arrests.en_ZA
dc.identifier.apacitationGoqo, S. P. (2014). <i>Computational study of compact tension and double torsion test geometries</i>. (Thesis). University of Cape Town ,Faculty of Science ,Department of Mathematics and Applied Mathematics. Retrieved from http://hdl.handle.net/11427/9108en_ZA
dc.identifier.chicagocitationGoqo, Sicelo Praisgod. <i>"Computational study of compact tension and double torsion test geometries."</i> Thesis., University of Cape Town ,Faculty of Science ,Department of Mathematics and Applied Mathematics, 2014. http://hdl.handle.net/11427/9108en_ZA
dc.identifier.citationGoqo, S. 2014. Computational study of compact tension and double torsion test geometries. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Goqo, Sicelo Praisgod AB - In the design of many engineering components subjected to cyclic or repetitive loading,fatigue is an ever-present challenge. The engineer often endeavors to design the structural or component system in such a way that the cyclic stresses are below a particular fatigue limit, or, in fracture mechanics terms, at stress levels below threshold. In the Paris formulation, fatigue threshold, Δҝₜₕ, may be regarded as that value of cyclic stress intensity below which fatigue crack growth does not occur. For a particular material and environment, this threshold value, Δҝₜₕ, is determined experimentally by monitoring growth of a crack (typically in a compact tension ( CT) specimen) and continually reducing cyclic stress levels until the threshold condition is reached. This procedure is very cumbersome and time-consuming, and this project rather considers the design of a fracture mechanics specimen geometry in which there is a decreasing stress in tensity (with crack length) that facilitates determination of the threshold value simply at constant applied cyclic amplitude, and the crack length at which fatigue crack growth arrests. DA - 2014 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 2014 T1 - Computational study of compact tension and double torsion test geometries TI - Computational study of compact tension and double torsion test geometries UR - http://hdl.handle.net/11427/9108 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/9108
dc.identifier.vancouvercitationGoqo SP. Computational study of compact tension and double torsion test geometries. [Thesis]. University of Cape Town ,Faculty of Science ,Department of Mathematics and Applied Mathematics, 2014 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/9108en_ZA
dc.language.isoengen_ZA
dc.publisher.departmentDepartment of Mathematics and Applied Mathematicsen_ZA
dc.publisher.facultyFaculty of Scienceen_ZA
dc.publisher.institutionUniversity of Cape Town
dc.titleComputational study of compact tension and double torsion test geometriesen_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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