Determination of Residual Stresses in Electron Beam WeldedCompact Tension Specimens
Welding can generate considerable residual stresses in components. These stresses will drive creep strain accumulation at high temperatures, and are generally superimposed by stresses generated from an applied (primary) load (e.g. pressure loading). It is greatly important that the influence of residual stresses is understood. A novel approach to introduce residual stresses in a Compact Tension C(T) specimen using strategically placed Electron Beam (EB) welds is proposed to perform Creep Crack Growth (CCG) tests. C(T) specimens with EB welds have been fabricated, for which the the residual stresses are to be measured. A numerical model of the welding and specimen fabrication has been developed, using Finite Element Analysis (FEA) to predict the residual stresses. The Neutron Diffraction (ND) measurements are to be used to validate the model.
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KAPADIA Priyesh; DAVIES Catrin; NIKBIN Kamran; PIRLING Thilo and TARNOWSKI Keith. (2012). Determination of Residual Stresses in Electron Beam WeldedCompact Tension Specimens. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.1-02-122
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