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dc.creatorMatsumoto, Kay Yuri
dc.descriptionDue to the character of the original source materials and the nature of batch digitization, quality control issues may be present in this document. Please report any quality issues you encounter to, referencing the URI of the item.en
dc.descriptionIncludes bibliographical references.en
dc.descriptionIssued also on microfiche from Lange Micrographics.en
dc.description.abstractThe accurate determination of crack-tip stress-field parameters from experimentally obtained displacement patterns is often complicated by the presence of displacement fringes which are not related to the crack-tip field of interest. The main objective of this thesis is to determine if an overdeterministic, multiple-point, least-squares solution algorithm is able to accurately determine stress-field parameters from mixed-mode displacement fields, in spite of the presence of a superimposed non-symmetric, nonstrain-related displacement field. Numerical experiments, finite element analysis, and experimental data were used to demonstrate the effectiveness of the solution scheme. The ultimate goal for this solution method is to study the behavior of the cracks that can develop at interfaces in composites and ceramics after prolonged exposure to elevated temperatures and adverse environments. The local crack-tip stress field in these cases will have a Mode II component even when the global loading is purely tensile in nature.en
dc.publisherTexas A&M University
dc.rightsThis thesis was part of a retrospective digitization project authorized by the Texas A&M University Libraries in 2008. Copyright remains vested with the author(s). It is the user's responsibility to secure permission from the copyright holder(s) for re-use of the work beyond the provision of Fair Use.en
dc.subjectmechanical engineering.en
dc.subjectMajor mechanical engineering.en
dc.titleDetermining crack-tip stress-field parameters from mixed-mode displacement fieldsen
dc.typeThesisen engineeringen
dc.format.digitalOriginreformatted digitalen

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