dc.contributor.authorWang, Huyien_US
dc.date.accessioned2008-09-17T10:47:03Z
dc.date.accessioned2017-07-23T08:38:30Z
dc.date.available2008-09-17T10:47:03Z
dc.date.available2017-07-23T08:38:30Z
dc.date.copyright2007en_US
dc.date.issued2007
dc.identifier.citationWang, H. (2007). Mechanics of dislocations in multilayered materials. Doctoral thesis, Nanyang Technological University, Singapore.
dc.identifier.urihttp://hdl.handle.net/10356/5284
dc.description.abstractThis thesis reports an investigation into the mechanics of anisotropic multilayered materials embedded with dislocations. An image technique is developed for solving the problems of infinite bilayers, film-substrates and general N-layer composites. The key contributions are: (1) the development of an image decomposition scheme which is instrumental to the accuracy of the complete solution, and (2) the elimination of singularities from the governing integral equations using certain H and I transforms. Numerical investigations reveal that many factors, e.g., elastic anisotropy and layer inhomogeneity, will significantly influence the image forces acting on the dislocation. Furthermore, a single-ended discrete dislocation pileup model is developed and used to show that the shear strength dependence on layer thickness obeys the Hall-Petch relation quite well for sufficiently thick layers while image forces result in a deviation of the relation for very thin layers. The numerical predictions are in good agreement with a comprehensive set of experimental data for metallic multilayer systems.en_US
dc.rightsNanyang Technological Universityen_US
dc.subjectDRNTU::Engineering::Materials::Metallic materials
dc.titleMechanics of dislocations in multilayered materialsen_US
dc.typeThesisen_US
dc.contributor.schoolSchool of Mechanical and Aerospace Engineeringen_US
dc.contributor.supervisorWu Mao Seeen_US
dc.description.degreeDOCTOR OF PHILOSOPHY (MPE)en_US


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