Date of Award
Civil and Environmental Engineering
Das, Sreekanta (Civil and Environmental Engineering)
CC BY-NC-ND 4.0
A dent is a defect in the pipe wall in the form of localized inward plastic deformation. Dents are a matter of serious concern for pipeline operators because they may cause a rupture or a leak in the pipeline. Hence, a reliable strain-based criterion for the assessment of dents is very important. An understanding of the local strain distributions in the dent is very important for the development of a strain-based dent evaluation criterion. Therefore, this study was undertaken using full-scale tests and a parametric study to assess the influence of various parameters on the strain distributions in a dent. Additionally, the ASME strain-based dent evaluation criterion was reviewed. It was shown that strain distributions and strain values in a dent are significantly influenced by the dent depth, internal pressure, and dent shape. The study also noted that upgrading is required for the ASME criterion.
Rafi, Abu Naim Md, "Structural Behaviour of Dented Pipelines" (2011). Electronic Theses and Dissertations. 89.