An experimental validation of residual stresses in weld clad pipelines

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Abstract

The nature and distribution of residual stresses are invariably critical for fatigue life with dissimilar material joints often inducing high tensile residual stresses. A fatigue-resistant concept of weld cladding process pipelines, producing compressive residual stresses, is under investigation to examine how these stresses may be influenced. Simplified weld cladding simulations have successfully illustrated the development and distribution of residual stresses through the joint. The study has highlighted the importance of accurate material data for clad and substrate materials with current analysis assumptions in a simple thick-walled pipe discussed. Experimental validation, using ICHD, measured residual stresses with depth on weld clad specimens, resulting in good correlation between simulation and experiment for a nickel-chromium-based superalloy clad on low alloy carbon steel as discussed. Future work, including a full 3D representation of the
cladding process and a comparison of residual stress measurement methods, are also discussed.
Original languageEnglish
Title of host publicationResearch and Applications in Structural Engineering, Mechanics & Computation
Subtitle of host publicationProceedings of the 5th Conference on Structural Engineering, Mechanics & Computation
Pages613-617
DOIs
Publication statusPublished - 15 Aug 2013
Event5th International Conference on Structural Engineering, Mechanics & Computation - University of Cape Town, Cape Town, South Africa
Duration: 2 Sep 20134 Sep 2013

Conference

Conference5th International Conference on Structural Engineering, Mechanics & Computation
CountrySouth Africa
CityCape Town
Period2/09/134/09/13

Keywords

  • residual stresses
  • weld clad pipelines
  • fatigue assessment
  • nickel based superalloy
  • low alloy steel

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  • Cite this

    Schnier, G., Wood, J., & Galloway, A. (2013). An experimental validation of residual stresses in weld clad pipelines. In Research and Applications in Structural Engineering, Mechanics & Computation: Proceedings of the 5th Conference on Structural Engineering, Mechanics & Computation (pp. 613-617) https://doi.org/10.1201/b15963-113