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|Title:||Numerical modelling of pipeline construction / Alexander Dunstone.|
|School/Discipline:||School of Mechanical Engineering|
|Abstract:||Examines ways of reducing the risk of hydrogen assisted cold cracking in pipeline construction by modifying the construction procedure to reduce residual stress and hydrogen concentration. A numerical model of the pipeline construction procedure capable of modelling the process in a transient sense was created. Experimental validation of the model involved using the "blind hole drilling" strain gauge method of residual stress measurement. The diffusion of hydrogen during welding was modelled using a scheme based on Fick's Second Law of Diffusion, finding that the parameters which dominate the rate of diffusion are the timing of the weldment process, joint geometry, pre-heating and post-heating.|
|Dissertation Note:||Thesis (Ph.D.)--University of Adelaide, School of Mechanical Engineering, 2004|
|Subject:||Pipelines Cracking Mathematical models.|
Pipelines Welding Mathematical models.
Metals Hydrogen embrittlement Mathematical models.
Welded joints Defects Mathematical models.
Bibliography: leaves 231-249.
xxvii, 261 leaves : ill. (some col.), plates, photos (col.) ; 30 cm.
|Provenance:||This electronic version is made publicly available by the University of Adelaide in accordance with its open access policy for student theses. Copyright in this thesis remains with the author. This thesis may incorporate third party material which has been used by the author pursuant to Fair Dealing exception. If you are the author of this thesis and do not wish it to be made publicly available or If you are the owner of any included third party copyright material you wish to be removed from this electronic version, please complete the take down form located at: http://www.adelaide.edu.au/legals|
|Appears in Collections:||Research Theses|
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